Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
182
FNUS55 KTWC 171020
FWFTWC
Fire Weather Planning Forecast for Southeast Arizona
National Weather Service Tucson AZ
320 AM MST Thu Sep 17 2026
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20-FOOT WIND FORECAST OF `LIGHT WINDS` INDICATES MAINLY
TERRAIN DRIVEN WINDS
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.DISCUSSION...Lingering showers this morning with a chance of
storms along the Arizona and New Mexico border this afternoon
and evening. Drier conditions move in Friday limiting the daily
chance through this weekend into early next week. High
temperatures will be below normal today and Thursday, then be
around normal Friday into early next week. Min RH values mainly
20 to 45 percent in the valleys and 35 to 65 percent in the
mountains over the next week. RH recoveries will continue to be
excellent overnight. Winds will generally remain less than 15
mph and terrain driven. Gusty and erratic winds will accompany
thunderstorms.
AZZ150-172200-
Arizona Fire Weather Zone 150
Sonoran FDRA-Most of Pima County-South Central Pinal County-
Tohono O`odham Nation-Tucson Metropolitan area-TDC-
320 AM MST Thu Sep 17 2026
.TODAY...
* Sky/Weather..............Mostly cloudy (45-55 pct) then becoming
partly cloudy (25-35 pct).
* Chance of Precip.........0 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........86 to 96 degs.
24 hr Trend...........Up 2 to 5 degs.
* Min Humidity.............34 to 44 pct.
24 hr Trend...........Down 12 to 16 pct.
* Wind (20 ft/10-min avg)..Southeast around 10 mph in the morning
becoming light.
* 10000 ft MSL Wind........Southwest 10 to 15 mph.
* Mixing height............6222 ft AGL.
* Transport winds..........South 8 to 9 knots.
* Ventilation Category.....Good (55998 knot-ft).
.TONIGHT...
* Sky/Weather..............Mostly clear (20-30 pct).
* Chance of Precip.........0 pct.
* Chance of Thunder........0 pct.
* Min Temperature..........66 to 76 degs.
24 hr Trend...........Up 1 to 4 degs.
* Max Humidity.............63 to 73 pct.
24 hr Trend...........Down 22 to 26 pct.
* Wind (20 ft/10-min avg)..Light winds.
* 10000 ft MSL Wind........South 15 to 20 mph.
.FRIDAY...
* Sky/Weather..............Mostly sunny (5-15 pct).
* Chance of Precip.........0 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........91 to 101 degs.
24 hr Trend...........Up 3 to 6 degs.
* Min Humidity.............24 to 34 pct.
24 hr Trend...........Down 9 to 13 pct.
* Wind (20 ft/10-min avg)..Light winds.
* 10000 ft MSL Wind........South 15 to 20 mph.
* Mixing height............7704 ft AGL.
* Transport winds..........Southeast 7 knots shifting to the
southwest in the afternoon.
* Ventilation Category.....Good (53928 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.SATURDAY...Clear. Lows 66 to 76. Highs 92 to 102. Light winds.
Minimum Humidity 18 to 28 pct.
.SUNDAY...Mostly clear. Lows 66 to 76. Highs 91 to 101. Light
winds. Minimum Humidity 16 to 26 pct.
.MONDAY...Partly cloudy. Lows 67 to 77. Highs 92 to 102. South
wind around 15 mph. Minimum Humidity 19 to 29 pct.
.TUESDAY...Mostly clear. Lows 66 to 76. Highs 91 to 101.
.WEDNESDAY...Mostly clear. Lows 66 to 76. Highs 92 to 102.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
$$
AZZ151-172200-
Arizona Fire Weather Zone 151
Western half Desert Grasslands FDRA including elevations up to
5500 feet in Southeast corner of Pinal County-
Extreme Eastern Pima County-Western third of Cochise County-
Santa Cruz County-TDC-
320 AM MST Thu Sep 17 2026
.TODAY...
* Sky/Weather..............Partly cloudy (35-45 pct).
* Chance of Precip.........0 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........81 to 91 degs.
24 hr Trend...........Up 7 to 11 degs.
* Min Humidity.............40 to 50 pct.
24 hr Trend...........Down 16 to 20 pct.
* Wind (20 ft/10-min avg)..Southeast around 10 mph in the morning
becoming light.
* 10000 ft MSL Wind........South 10 to 15 mph.
* Mixing height............6171 ft AGL.
* Transport winds..........South 7 to 9 knots.
* Ventilation Category.....Good (55539 knot-ft).
.TONIGHT...
* Sky/Weather..............Mostly clear (15-25 pct).
* Chance of Precip.........0 pct.
* Chance of Thunder........0 pct.
* Min Temperature..........60 to 70 degs.
24 hr Trend...........Little change.
* Max Humidity.............75 to 85 pct.
24 hr Trend...........Down 20 to 24 pct.
* Wind (20 ft/10-min avg)..Light winds.
* 10000 ft MSL Wind........South 10 to 15 mph.
.FRIDAY...
* Sky/Weather..............Mostly sunny (15-25 pct).
* Chance of Precip.........0 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........84 to 94 degs.
24 hr Trend...........Up 2 to 5 degs.
* Min Humidity.............32 to 42 pct.
24 hr Trend...........Down 7 to 11 pct.
* Wind (20 ft/10-min avg)..Light winds becoming southwest around 10
mph in the afternoon.
* 10000 ft MSL Wind........Southwest 10 to 15 mph.
* Mixing height............7072 ft AGL.
* Transport winds..........Southeast 7 knots shifting to the
southwest 8 knots in the afternoon.
* Ventilation Category.....Good (56576 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.SATURDAY...Clear. Lows 60 to 70. Highs 84 to 94. Light winds.
Minimum Humidity 25 to 35 pct.
.SUNDAY...Mostly clear. Lows 59 to 69. Highs 83 to 93. Light
winds. Minimum Humidity 22 to 32 pct.
.MONDAY...Partly cloudy. Lows 59 to 69. Highs 84 to 94. South
wind around 15 mph. Minimum Humidity 26 to 36 pct.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows 59 to 69. Highs 83 to 93.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows 59 to 69. Highs 84 to 94.
NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION
(3500 MSL)
$$
AZZ152-172200-
Arizona Fire Weather Zone 152
Eastern half Desert Grasslands FDRA including elevations up to
5500 feet in Southwest Graham County and Eastern two thirds of
Cochise County-Southern San Carlos Reservation-
Southern Greenlee County below 5000 feet-TDC-
320 AM MST Thu Sep 17 2026
.TODAY...
* Sky/Weather..............Partly cloudy (45-55 pct) then becoming
mostly sunny (20-30 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........80 to 90 degs.
24 hr Trend...........Up 5 to 9 degs.
* Min Humidity.............43 to 53 pct.
24 hr Trend...........Down 8 to 12 pct.
* Wind (20 ft/10-min avg)..Southeast around 10 mph.
* 10000 ft MSL Wind........South 15 to 20 mph.
* Mixing height............6118 ft AGL.
* Transport winds..........South 9 to 10 knots.
* Ventilation Category.....Good (61180 knot-ft).
.TONIGHT...
* Sky/Weather..............Partly cloudy (25-35 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Min Temperature..........60 to 70 degs.
24 hr Trend...........Up 1 deg.
* Max Humidity.............78 to 88 pct.
24 hr Trend...........Down 21 to 25 pct.
* Wind (20 ft/10-min avg)..Light winds becoming east around 10 mph
after midnight.
* 10000 ft MSL Wind........South 10 to 15 mph.
.FRIDAY...
* Sky/Weather..............Partly cloudy (30-40 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........83 to 93 degs.
24 hr Trend...........Up 2 to 5 degs.
* Min Humidity.............35 to 45 pct.
24 hr Trend...........Down 4 to 8 pct.
* Wind (20 ft/10-min avg)..East around 10 mph shifting to the south
in the afternoon.
* 10000 ft MSL Wind........South 10 to 15 mph.
* Mixing height............7483 ft AGL.
* Transport winds..........East 9 knots shifting to the south in
the afternoon.
* Ventilation Category.....Good (67347 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.SATURDAY...Mostly clear. Lows 60 to 70. Highs 84 to 94. Light
winds. Minimum Humidity 26 to 36 pct.
.SUNDAY...Mostly clear. Lows 59 to 69. Highs 83 to 93. Light
winds. Minimum Humidity 21 to 31 pct.
.MONDAY...Partly cloudy. Lows 59 to 69. Highs 84 to 94. Light
winds. Minimum Humidity 23 to 33 pct.
.TUESDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows 60 to 70. Highs 83 to 93.
.WEDNESDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows 58 to 68. Highs 82 to 92.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
$$
AZZ153-172200-
Arizona Fire Weather Zone 153
Northern Graham County-Northern Greenlee County-
White and Gila Mountains-Apache Sitgreaves NF-
Southern San Carlos Reservation above 5000 feet-SDC-
320 AM MST Thu Sep 17 2026
.TODAY...
* Sky/Weather..............Mostly cloudy (50-60 pct) then becoming
partly cloudy (30-40 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........20 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........69 to 79 degs.
24 hr Trend...........Up 7 to 11 degs.
* Min Humidity.............53 to 63 pct.
24 hr Trend...........Down 15 to 19 pct.
* Wind (20 ft/10-min avg)..South 10 to 15 mph.
* 10000 ft MSL Wind........South around 25 mph decreasing to around
15 mph in the afternoon.
* Mixing height............5332 ft AGL.
* Transport winds..........South 14 to 15 knots.
* Ventilation Category.....Very good (79980 knot-ft).
.TONIGHT...
* Sky/Weather..............Partly cloudy (25-35 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Min Temperature..........52 to 62 degs.
24 hr Trend...........Down 1 deg.
* Max Humidity.............77 to 87 pct.
24 hr Trend...........Down 22 to 26 pct.
* Wind (20 ft/10-min avg)..South around 10 mph shifting to the east
after midnight.
* 10000 ft MSL Wind........South 10 to 15 mph.
.FRIDAY...
* Sky/Weather..............Partly cloudy (30-40 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........20 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........72 to 82 degs.
24 hr Trend...........Up 2 to 5 degs.
* Min Humidity.............42 to 52 pct.
24 hr Trend...........Down 5 to 9 pct.
* Wind (20 ft/10-min avg)..East around 10 mph shifting to the south
in the afternoon.
* 10000 ft MSL Wind........South 10 to 15 mph.
* Mixing height............6575 ft AGL.
* Transport winds..........Southeast 11 knots shifting to the south
in the afternoon.
* Ventilation Category.....Very good (72325 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows 52 to 62. Highs 73 to 83. Light winds.
Minimum Humidity 31 to 41 pct.
.SUNDAY...Mostly clear. Lows 50 to 60. Highs 73 to 83. Light
winds. Minimum Humidity 20 to 30 pct.
.MONDAY...Mostly cloudy. Lows 50 to 60. Highs 73 to 83. Light
winds. Minimum Humidity 23 to 33 pct.
.TUESDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows 51 to 61. Highs 71 to 81.
.WEDNESDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows 50 to 60. Highs 71 to 81.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
$$
AZZ154-172200-
Arizona Fire Weather Zone 154
Forest Woodlands FDRA including the Sky Islands of Southeast
Arizona above 5500 feet-Coronado NF-TDC-
320 AM MST Thu Sep 17 2026
.TODAY...
* Sky/Weather..............Partly cloudy (25-35 pct) then becoming
mostly sunny (15-25 pct).
* Chance of Precip.........0 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........70 to 80 degs.
24 hr Trend...........Up 5 to 9 degs.
* Min Humidity.............51 to 61 pct.
24 hr Trend...........Down 20 to 24 pct.
* Wind (20 ft/10-min avg)..South around 10 mph.
* 10000 ft MSL Wind........South 10 to 15 mph.
* Mixing height............7404 ft AGL.
* Transport winds..........South 8 to 10 knots.
* Ventilation Category.....Good (66636 knot-ft).
.TONIGHT...
* Sky/Weather..............Mostly clear (20-30 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Min Temperature..........55 to 65 degs.
24 hr Trend...........Up 2 to 5 degs.
* Max Humidity.............72 to 82 pct.
24 hr Trend...........Down 19 to 23 pct.
* Wind (20 ft/10-min avg)..Light winds becoming southeast around 10
mph after midnight.
* 10000 ft MSL Wind........South 10 to 15 mph.
.FRIDAY...
* Sky/Weather..............Mostly sunny (15-25 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........74 to 84 degs.
24 hr Trend...........Up 2 to 5 degs.
* Min Humidity.............47 to 57 pct.
24 hr Trend...........Down 6 to 10 pct.
* Wind (20 ft/10-min avg)..Southeast around 10 mph shifting to the
south in the afternoon.
* 10000 ft MSL Wind........Southwest 10 to 15 mph.
* Mixing height............8957 ft AGL.
* Transport winds..........Southeast 7 knots shifting to the south
8 knots in the afternoon.
* Ventilation Category.....Very good (71656 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.SATURDAY...Mostly clear. Lows 56 to 66. Highs 74 to 84. Light
winds. Minimum Humidity 33 to 43 pct.
.SUNDAY...Mostly clear. Lows 54 to 64. Highs 72 to 82. Light
winds. Minimum Humidity 28 to 38 pct.
.MONDAY...Partly cloudy. Lows 55 to 65. Highs 73 to 83. Light
winds. Minimum Humidity 31 to 41 pct.
.TUESDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows 55 to 65. Highs 72 to 82.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows 53 to 63. Highs 72 to 82.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
$$
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