Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
064
FNUS56 KPDT 182147
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
247 PM PDT Fri Sep 18 2026
.DISCUSSION...Isolated thunderstorms are currently developing over
OR695, OR696, OR697, and OR699, which is expected to peak before
1700 and extend until 1900 across these zones. Primary concerns
include frequent lightning, small hail, and gusty outflow winds.
A drier and warmer trend will persist through Monday. A weak
system Tuesday may bring light mountain showers ahead of a more
robust system late in the week providing widespread rainfall.
***Winds are 20 foot 10 minute averages ***
***CWR: Chance of wetting rain 0.10 or greater ***
***Ventilation Index is derived from transport wind
multiplied by the mixing height in 100`s of ft.
Categories are a generalized indicator and users
are encourage to develop criteria that are
suitable and representative of dispersion
conditions in their local area of interest.
Categories: low (< 200), moderate (200-500),
high (500-700), and very high (> 700).
-Note: Max transport winds may not occur
at the same time as max mixing height. ***
WAZ695-191130-
East Washington South Central Cascade Mountains-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....44-50.
* Max humidity........70-85 percent.
* Humidity recovery...Good...except Excellent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds up to 5 mph.
* Ridges/upr slopes....Northwest winds 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (51-97) decreasing to low (25-35) after
midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....71-78...except 63-70 ridges.
* Min humidity........30-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south up to
5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25-31) increasing to low to moderate
(111-205) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....47-52.
* Max humidity........61-76 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (25-45) decreasing to low (25-27) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-80...except 65-72 ridges.
* Min humidity........29-38 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southeast 1
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(168-250) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 47 to 53. Highs 63 to 76. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 42 to 49. Highs 57 to 70. West
winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 39 to 46. Highs 56 to 67. West
winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 42 to 48. Highs 58 to 69. Terrain
driven winds less than 5 mph.
.FRIDAY...A slight chance of showers. Partly cloudy. Lows 43 to
49. Highs 52 to 63. West winds 1 to 6 mph.
$$
WAZ690-191130-
Kittitas Valley-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds up to 5 mph.
* Ridges/upr slopes....Northwest winds up to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (80-126) decreasing to low (29-45) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....74-79...except 65-73 ridges.
* Min humidity........35-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the south
in the afternoon.
* Ventilation Index...Low (25-32) increasing to low (127-191) in
the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....51-56.
* Max humidity........60-75 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (25-54) decreasing to low (25-29) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-80...except 66-74 ridges.
* Min humidity........32-38 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4000 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the south
in the afternoon.
* Ventilation Index...Low (25) increasing to low (120-176) in the
afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 52 to 57. Highs 74 to 81. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 50 to 55. Highs 69 to 77.
Northwest winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 47 to 52. Highs 65 to 73.
Northwest winds 3 to 8 mph.
.THURSDAY...Partly cloudy. Lows 48 to 53. Highs 66 to 74. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 49 to 54. Highs 63 to 70. West
winds 1 to 6 mph.
$$
WAZ694-191130-
Yakama Alpine District-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-52.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (43-85) decreasing to low (25-26) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....74-80...except 65-75 ridges.
* Min humidity........29-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25-26) increasing to low to moderate
(127-203) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....47-54.
* Max humidity........53-68 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (25-40) decreasing to low (25-26) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-83...except 67-78 ridges.
* Min humidity........26-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the south
in the afternoon.
* Ventilation Index...Low (25) increasing to low to moderate
(167-225) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 48 to 55. Highs 69 to 81. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 44 to 51. Highs 65 to 76. West
winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 41 to 47. Highs 62 to 73. West
winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 43 to 50. Highs 63 to 74. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 44 to 51. Highs 56 to 68. West
winds 2 to 7 mph.
$$
ORZ691-WAZ691-191130-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-54.
* Max humidity........69-84 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 5 mph.
* Ridges/upr slopes....West winds 2 to 7 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (46-120) decreasing to low (25-38) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-82...except 72-77 ridges.
* Min humidity........26-39 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 5 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....Southwest winds up to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25-48) increasing to low (98-156) in the
afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....51-56.
* Max humidity........64-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Low (29-69) decreasing to low (25-26) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-84...except 74-79 ridges.
* Min humidity........25-35 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25) increasing to low (72-144) in the
afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 53 to 58. Highs 79 to 85. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 52 to 57. Highs 74 to 80. West
winds 2 to 7 mph.
.WEDNESDAY...Mostly clear. Lows 49 to 54. Highs 71 to 77. West
winds 3 to 8 mph.
.THURSDAY...Partly cloudy. Lows 49 to 54. Highs 73 to 79. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 50 to 55. Highs 68 to 75. West
winds 2 to 7 mph.
$$
ORZ692-WAZ692-191130-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-52.
* Max humidity........68-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (41-79) decreasing to low (25-28) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....70-77...except 64-69 ridges.
* Min humidity........34-46 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....West around 5 mph shifting to the north in
the afternoon.
* Ventilation Index...Low (25-38) increasing to low to moderate
(138-238) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....46-53.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....East 5 to 10 mph.
* Ventilation Index...Low (29-67) decreasing to low (25-33) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....74-81...except 68-74 ridges.
* Min humidity........28-39 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25-28) increasing to low to moderate
(122-236) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 48 to 56. Highs 72 to 82. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 48 to 56. Highs 68 to 78. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 45 to 53. Highs 66 to 75.
Terrain driven winds less than 5 mph.
.THURSDAY...Mostly clear. Lows 46 to 53. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 48 to 55. Highs 64 to 74. Southwest
winds 1 to 5 mph.
$$
ORZ693-WAZ693-191130-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers.
* Min temperature.....44-51.
* Max humidity........72-87 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (83-117) decreasing to low (25-26) after
midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....69-78...except 62-69 ridges.
* Min humidity........33-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming north 2 to 6
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (25-44) increasing to moderate (265-393)
in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....43-53.
* Max humidity........68-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....East around 5 mph.
* Ventilation Index...Low (64-94) decreasing to low (25) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....74-83...except 68-75 ridges.
* Min humidity........26-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(74-218) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 46 to 56. Highs 75 to 84. South
winds up to 5 mph.
.TUESDAY...Mostly clear. Lows 47 to 56. Highs 73 to 82. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 45 to 53. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.THURSDAY...Mostly clear. Lows 45 to 54. Highs 76 to 84. South
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 47 to 56. Highs 70 to 79. Southwest
winds 3 to 8 mph.
$$
ORZ701-191130-
Eastern Columbia River Gorge of Oregon-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....47-52.
* Max humidity........66-81 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph. In the eastern
Columbia River Gorge, west winds 2 to 7 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (96-132) decreasing to low (26-38) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-83.
* Min humidity........26-38 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph...except upslope
less than 5 mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (25-35) increasing to low (70-110) in the
afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....50-55.
* Max humidity........60-74 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (48-68) decreasing to low (25-29) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-85.
* Min humidity........25-34 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph in the afternoon.
Upslope less than 5 mph in the morning.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....West around 5 mph shifting to the southeast
in the afternoon.
* Ventilation Index...Low (25) increasing to low (119-171) in the
afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 52 to 57. Highs 78 to 83. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 48 to 53. Highs 73 to 78. West
winds 2 to 7 mph.
.WEDNESDAY...Mostly clear. Lows 45 to 50. Highs 72 to 77. West
winds 3 to 8 mph.
.THURSDAY...Partly cloudy. Lows 47 to 52. Highs 73 to 78. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 48 to 53. Highs 67 to 72. West
winds 1 to 6 mph.
$$
ORZ702-191130-
East Slopes of the Mt. Hood National Forest-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-51.
* Max humidity........57-72 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (64-100) decreasing to low (25-32) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-81...except 69-76 ridges.
* Min humidity........27-35 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....Southwest around 5 mph shifting to the
southeast in the afternoon.
* Ventilation Index...Low (25-29) increasing to low (74-128) in the
afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....49-55.
* Max humidity........48-63 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North around 5 mph shifting to the southwest
after midnight.
* Ventilation Index...Low (27-51) decreasing to low (25-28) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-83...except 71-79 ridges.
* Min humidity........26-33 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(192-248) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 49 to 56. Highs 68 to 81. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 45 to 52. Highs 63 to 77. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 40 to 47. Highs 63 to 74.
Terrain driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 44 to 50. Highs 65 to 76. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 44 to 51. Highs 56 to 69. Terrain
driven winds less than 5 mph.
$$
ORZ695-191130-
Eagle Cap Wilderness-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A chance of showers in the
evening.
* Min temperature.....45-50...except 39-45 ridges.
* Max humidity........75-90 percent.
* Humidity recovery...Good...except Excellent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (77-117) decreasing to low (25-44) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....66-76...except 56-66 ridges.
* Min humidity........35-48 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to
6 mph in the afternoon.
* Ridges/upr slopes....North winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (40-104) increasing to moderate (297-481)
in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....46-51...except 41-47 ridges.
* Max humidity........66-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 2 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Low (59-101) decreasing to low (25-26) after
midnight.
.SUNDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....70-80...except 59-69 ridges.
* Min humidity........29-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(175-263) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 45 to 53. Highs 64 to 79. South
winds 1 to 5 mph.
.TUESDAY...Mostly clear. Lows 46 to 53. Highs 63 to 78. West
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 43 to 51. Highs 62 to 76. West
winds 2 to 7 mph.
.THURSDAY...Mostly clear. Lows 45 to 52. Highs 65 to 80. South
winds 4 to 9 mph.
.FRIDAY...Partly cloudy. Lows 47 to 54. Highs 61 to 75. South
winds 5 to 11 mph.
$$
ORZ694-191130-
Grande Ronde Valley of Oregon-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....42-47.
* Max humidity........79-91 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (80-134) decreasing to low (25-35) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-80.
* Min humidity........29-34 percent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph.
* Ridges/upr slopes....North winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (25-59) increasing to moderate (306-396)
in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....44-49.
* Max humidity........73-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North around 10 mph shifting to the east
after midnight.
* Ventilation Index...Low (70-94) decreasing to low (25) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-83.
* Min humidity........26-31 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(161-203) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 47 to 52. Highs 79 to 84. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 47 to 52. Highs 78 to 83. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 45 to 50. Highs 76 to 81. Terrain
driven winds less than 5 mph.
.THURSDAY...Mostly clear. Lows 45 to 50. Highs 79 to 84.
Southeast winds 3 to 8 mph.
.FRIDAY...Partly cloudy. Lows 47 to 52. Highs 74 to 79. Southwest
winds 4 to 10 mph.
$$
ORZ699-191130-
Western Forested Blue Mountains-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....41-47.
* Max humidity........70-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (86-128) decreasing to low (25-30) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....70-76...except 64-71 ridges.
* Min humidity........28-36 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Low (25-51) increasing to low to moderate
(162-336) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....44-49.
* Max humidity........60-72 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph shifting to the
southeast after midnight.
* Ventilation Index...Low (54-86) decreasing to low (25-26) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-81...except 69-75 ridges.
* Min humidity........23-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(189-331) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 47 to 53. Highs 72 to 80. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 47 to 52. Highs 69 to 78. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 44 to 49. Highs 67 to 76.
Terrain driven winds less than 5 mph.
.THURSDAY...Mostly clear. Lows 45 to 50. Highs 72 to 81.
Southeast winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 47 to 52. Highs 65 to 74. Southwest
winds 1 to 6 mph.
$$
ORZ696-191130-
John Day Valley-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-49.
* Max humidity........67-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (105-141) decreasing to low (25) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-79...except 67-72 ridges.
* Min humidity........24-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....Southeast around 5 mph shifting to the north
in the afternoon.
* Ventilation Index...Low (25-27) increasing to low to moderate
(96-210) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....46-51.
* Max humidity........57-68 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph shifting to the
southeast after midnight.
* Ventilation Index...Low (51-77) decreasing to low (25) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-85...except 72-77 ridges.
* Min humidity........20-25 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(156-262) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 49 to 54. Highs 76 to 85. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 49 to 54. Highs 73 to 82. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 46 to 51. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 46 to 51. Highs 76 to 86. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 48 to 53. Highs 69 to 77. West
winds 1 to 6 mph.
$$
ORZ700-191130-
Central Mountains of Oregon-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....37-47.
* Max humidity........71-86 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (123-197) decreasing to low (25) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-78...except 66-71 ridges.
* Min humidity........22-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25-30) increasing to low (69-155) in the
afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....40-49.
* Max humidity........58-70 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph shifting to the
southeast after midnight.
* Ventilation Index...Low (55-91) decreasing to low (25) after
midnight.
.SUNDAY...
* Sky/weather.........Partly cloudy then becoming sunny.
* Max temperature.....77-82...except 70-76 ridges.
* Min humidity........19-25 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(160-334) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 43 to 52. Highs 76 to 82. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 43 to 50. Highs 74 to 79. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 39 to 47. Highs 72 to 78.
Northwest winds 1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 40 to 48. Highs 77 to 83. South
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 41 to 49. Highs 68 to 74. West
winds 3 to 8 mph.
$$
ORZ703-191130-
Warm Springs Reservation-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-50.
* Max humidity........68-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (101-145) decreasing to low (25-31) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-82...except 66-74 ridges.
* Min humidity........23-31 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25-29) increasing to low (82-148) in the
afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....49-54.
* Max humidity........54-65 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North around 5 mph.
* Ventilation Index...Low (52-78) decreasing to low (25-26) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-85...except 69-76 ridges.
* Min humidity........23-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(145-249) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 51 to 56. Highs 74 to 85. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 47 to 52. Highs 69 to 81. West
winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 43 to 48. Highs 68 to 77. West
winds 3 to 8 mph.
.THURSDAY...Partly cloudy. Lows 46 to 51. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 46 to 51. Highs 61 to 72. West
winds 2 to 7 mph.
$$
ORZ704-191130-
Northern Deschutes National Forest-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....39-45.
* Max humidity........70-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (85-137) decreasing to low (25) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-81...except 65-73 ridges.
* Min humidity........23-34 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest around 5 mph shifting to the east
in the afternoon.
* Ventilation Index...Low (25-27) increasing to low (81-151) in the
afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....43-50.
* Max humidity........57-65 percent...except 46-60 percent ridges.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North around 5 mph.
* Ventilation Index...Low (47-79) decreasing to low (25-26) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-84...except 68-76 ridges.
* Min humidity........23-33 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Low (25-26) increasing to moderate (224-282)
in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 45 to 52. Highs 70 to 82. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 42 to 48. Highs 66 to 78. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 38 to 44. Highs 66 to 77. West
winds up to 5 mph.
.THURSDAY...Partly cloudy. Lows 40 to 47. Highs 69 to 80. Terrain
driven winds less than 5 mph.
.FRIDAY...Cooler. Partly cloudy. Lows 41 to 47. Highs 57 to 69.
West winds 1 to 6 mph.
$$
ORZ705-191130-
Southern Deschutes National Forest-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....33-42.
* Max humidity........77-92 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (98-196) decreasing to low (25) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-77...except 63-71 ridges.
* Min humidity........22-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25-32) increasing to low (41-125) in the
afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....38-45...except 43-49 ridges.
* Max humidity........57-72 percent...except 46-61 percent ridges.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Low (62-94) decreasing to low (25-26) after
midnight.
.SUNDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....76-81...except 67-74 ridges.
* Min humidity........18-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Low (25-26) increasing to moderate (247-311)
in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 38 to 48. Highs 72 to 80. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 37 to 46. Highs 68 to 78. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 34 to 42. Highs 68 to 77. West
winds up to 5 mph.
.THURSDAY...Partly cloudy. Lows 36 to 45. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.FRIDAY...Cooler. Partly cloudy. Lows 37 to 44. Highs 60 to 70.
West winds 1 to 6 mph.
$$
ORZ697-191130-
Central Blue Mountains-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....38-45.
* Max humidity........75-87 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds up to 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......Near surface.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (127-181) decreasing to low (25-37) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....70-75...except 65-71 ridges.
* Min humidity........25-31 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Low (27-69) increasing to moderate (242-340)
in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....41-48.
* Max humidity........60-68 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph shifting to the
southeast after midnight.
* Ventilation Index...Low (48-88) decreasing to low (25) after
midnight.
.SUNDAY...
* Sky/weather.........Partly cloudy then becoming sunny.
* Max temperature.....74-79...except 68-75 ridges.
* Min humidity........21-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25) increasing to moderate (300-382) in
the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 43 to 50. Highs 71 to 79. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 44 to 51. Highs 71 to 78. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 42 to 49. Highs 70 to 77.
Northwest winds up to 5 mph.
.THURSDAY...Mostly clear. Lows 43 to 50. Highs 73 to 80.
Southeast winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 44 to 52. Highs 67 to 73. Southwest
winds 2 to 7 mph.
$$
ORZ698-191130-
Southern Blue Mountains-
247 PM PDT Fri Sep 18 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....38-44.
* Max humidity........74-86 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low to moderate (180-252) decreasing to low
(28-38) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....70-76.
* Min humidity........23-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (34-54) increasing to moderate (227-299)
in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....40-47.
* Max humidity........59-68 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Low (41-95) decreasing to low (25-28) after
midnight.
.SUNDAY...
* Sky/weather.........Partly cloudy then becoming sunny.
* Max temperature.....74-79...except 69-74 ridges.
* Min humidity........19-24 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Low (25) increasing to moderate (286-388) in
the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 43 to 49. Highs 75 to 80. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 43 to 50. Highs 75 to 80. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 41 to 49. Highs 74 to 80.
Northwest winds up to 5 mph.
.THURSDAY...Mostly clear. Lows 42 to 49. Highs 78 to 84.
Southeast winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 43 to 51. Highs 71 to 78. West
winds 2 to 7 mph.
$$
.8-14 DAY OUTLOOK for Saturday September 26 through Friday October 2...
A greater chance of near normal temperatures and above normal
precipitation.
$$