269
FNUS76 KPDT 181446
FWSPDT

Spot Forecast for Anthony...FS
National Weather Service Pendleton OR
746 AM PDT Tue Aug 18 2026

Forecast is based on forecast start time of 0900 MDT on August 18.
***Thunderstorms imply gusty and erratic winds      ***
***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 only:
   low (< 200), moderate (200-500), high (500-700),
   and very high (> 700).                           ***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...Winds will shift between west and northwest into the
afternoon today, with winds increasing late afternoon then shifting
to the northwest in the evening. West winds will prevail late
tonight through tomorrow afternoon. RHs will be in the mid teens
in the afternoons, with poor to fair overnight recovery.
Low level inversion will break around 8AM, with unstable conditions
developing overhead as early as 10AM tomorrow. Inversion redevelops
around 8PM, then breaks around 9AM Wednesday.

.REST OF TODAY...

Sky/weather.........Sunny (0-5 percent). Patchy smoke early in the
                    afternoon.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 70.
Min humidity........17-22 percent.
Wind (20 ft)........West winds 5 to 11 mph shifting to the northwest
around 12PM, then shifting to the west around
3PM.
Ridgetop wind.......West winds 6 to 12 mph shifting to the northwest
around 12PM, then shifting to the west 8 to
13 mph with gusts up to 19 mph around 3PM.
Mixing height.......8500 ft AGL.
Transport winds.....West 8 to 16 mph.
Ventilation Index...Low (80) increasing to very high (970) in the
                    afternoon.

TIME (MDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............60  61  63  65  66  67  67  67  66  63  60  55
RH..............39  36  33  30  28  26  24  22  26  30  40  46
20 FT wind dir..W   W   NW  NW  NW  W   W   W   NW  NW  NW  NW
20 FT wind spd..5   5   6   6   7   9   10  11  11  10  9   9
20 FT wind gust.                    14  14  16  15  14  14

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....52-55.
Max humidity........41-46 percent.
Wind (20 ft)........Northwest winds 5 to 11 mph shifting to the west
around 10PM.
Ridgetop wind.......Northwest winds 8 to 13 mph with gusts up to
19 mph shifting to the west 6 to 12 mph around
10PM.
Mixing height.......500 ft AGL.
Transport winds.....West 7 to 15 mph.
Ventilation Index...Moderate (310) decreasing to low (40)
                    overnight.


.WEDNESDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....70-73.
Min humidity........14-19 percent.
Wind (20 ft)........West winds 5 to 8 mph shifting to the north
4 to 7 mph after 4PM.
Ridgetop wind.......West winds 5 to 10 mph shifting to the north
5 to 8 mph after 4PM.
Mixing height.......8600 ft AGL.
Transport winds.....West 7 to 13 mph.
Ventilation Index...Low (80) increasing to very high (770) in the
                    afternoon.

$$
Forecaster...Lawhorn
Requested by...IC Makarowski
Type of request...WILDFIRE
.TAG 2619281.9/PDT
.DELDT 08/18/26
.FormatterVersion 2.0.0
.EMAIL jeffrey.duke@usda.gov,ethan.makarowski@usda.gov,daniel.oneal@usda.gov,ormbc@firenet.gov