Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
465
FNUS55 KTWC 212040
FWFTWC
Fire Weather Planning Forecast for Southeast Arizona
National Weather Service Tucson AZ
140 PM MST Fri Aug 21 2026
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20-FOOT WIND FORECAST OF `LIGHT WINDS` INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
.DISCUSSION...
Isolated to scattered thunderstorms expected Saturday afternoon
with daily but reduced chances going into next week.
Temperatures will remain above normal through the coming week.
Minimum relative humidity values mainly 15-30 percent each day
with light and terrain driven wind.
AZZ150-221415-
Arizona Fire Weather Zone 150
Sonoran FDRA-Most of Pima County-South Central Pinal County-
Tohono O`odham Nation-Tucson Metropolitan area-TDC-
140 PM MST Fri Aug 21 2026
.TONIGHT...
* Sky/Weather..............Partly cloudy (40-50 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........20 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........77 to 87 degs.
24 hr Trend...........Up 1 to 4 degs.
* Max Humidity.............34 to 44 pct.
24 hr Trend...........Down 4 to 8 pct.
* Wind (20 ft/10-min avg)..Northwest around 10 mph in the evening
becoming light.
* 10000 ft MSL Wind........North around 5 mph shifting to the east
after midnight.
.SATURDAY...
* Sky/Weather..............Partly cloudy (35-45 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Max Temperature..........103 to 113 degs.
24 hr Trend...........Up 1 deg.
* Min Humidity.............12 to 22 pct.
24 hr Trend...........Down 1 pct.
* Wind (20 ft/10-min avg)..Light winds.
* 10000 ft MSL Wind........Southeast 5 to 10 mph.
* Mixing height............13331 ft AGL.
* Transport winds..........Northeast 7 to 8 knots.
* Ventilation Category.....Excellent (106648 knot-ft).
.SATURDAY NIGHT...
* Sky/Weather..............Partly cloudy (40-50 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........20 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........77 to 87 degs.
24 hr Trend...........Little change.
* Max Humidity.............39 to 49 pct.
24 hr Trend...........Up 3 to 6 pct.
* Wind (20 ft/10-min avg)..West around 10 mph in the evening
becoming light.
* 10000 ft MSL Wind........North around 5 mph shifting to the east
after midnight.
.SUNDAY...
* Sky/Weather..............Partly cloudy (30-40 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........99 to 109 degs.
24 hr Trend...........Down 1 to 4 degs.
* Min Humidity.............18 to 28 pct.
24 hr Trend...........Up 1 to 4 pct.
* Wind (20 ft/10-min avg)..South around 10 mph shifting to the west
in the afternoon.
* 10000 ft MSL Wind........East 5 to 10 mph.
* Mixing height............13931 ft AGL.
* Transport winds..........South 10 knots shifting to the west 9
knots in the afternoon.
* Ventilation Category.....Excellent (125379 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.MONDAY...Partly cloudy. Lows 75 to 85. Highs 99 to 109. Light
winds. Minimum Humidity 18 to 28 pct.
.TUESDAY...Mostly clear. Lows 76 to 86. Highs 102 to 112. Light
winds. Minimum Humidity 13 to 21 pct.
.WEDNESDAY...Mostly clear. Lows 78 to 88. Highs 102 to 112. Light
winds. Minimum Humidity 12 to 22 pct.
.THURSDAY...Mostly clear. Lows 77 to 87. Highs 102 to 112.
.FRIDAY...Mostly clear. Lows 77 to 87. Highs 102 to 112.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
$$
AZZ151-221415-
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-
140 PM MST Fri Aug 21 2026
.TONIGHT...
* Sky/Weather..............Partly cloudy (40-50 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Min Temperature..........69 to 79 degs.
24 hr Trend...........Up 1 to 4 degs.
* Max Humidity.............44 to 54 pct.
24 hr Trend...........Down 5 to 9 pct.
* Wind (20 ft/10-min avg)..Northwest around 10 mph shifting to the
northeast after midnight.
* 10000 ft MSL Wind........East 5 to 10 mph.
.SATURDAY...
* Sky/Weather..............Mostly sunny (15-25 pct) then becoming
partly cloudy (40-50 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Max Temperature..........96 to 106 degs.
24 hr Trend...........Up 1 to 4 degs.
* Min Humidity.............14 to 24 pct.
24 hr Trend...........Down 2 to 5 pct.
* Wind (20 ft/10-min avg)..Northeast around 10 mph.
* 10000 ft MSL Wind........Southeast 5 to 10 mph.
* Mixing height............13666 ft AGL.
* Transport winds..........East 7 knots.
* Ventilation Category.....Very good (95662 knot-ft).
.SATURDAY NIGHT...
* Sky/Weather..............Partly cloudy (35-45 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........20 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........68 to 78 degs.
24 hr Trend...........Little change.
* Max Humidity.............48 to 58 pct.
24 hr Trend...........Down 7 to 11 pct.
* Wind (20 ft/10-min avg)..Light winds.
* 10000 ft MSL Wind........East 5 to 10 mph.
.SUNDAY...
* Sky/Weather..............Partly cloudy (25-35 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Max Temperature..........93 to 103 degs.
24 hr Trend...........Down 1 to 4 degs.
* Min Humidity.............20 to 30 pct.
24 hr Trend...........Up 2 to 5 pct.
* Wind (20 ft/10-min avg)..Light winds becoming northwest around 10
mph in the afternoon.
* 10000 ft MSL Wind........East 5 to 10 mph.
* Mixing height............11068 ft AGL.
* Transport winds..........Southeast 7 knots shifting to the
northeast 9 knots in the afternoon.
* Ventilation Category.....Very good (99612 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows 67 to 77. Highs 93 to 103. Light winds.
Minimum Humidity 20 to 30 pct.
.TUESDAY...Mostly clear. Lows 68 to 78. Highs 95 to 105. Light
winds. Minimum Humidity 15 to 25 pct.
.WEDNESDAY...Mostly clear. Lows 69 to 79. Highs 96 to 106. Light
winds. Minimum Humidity 14 to 24 pct.
.THURSDAY...Mostly clear. Lows 69 to 79. Highs 96 to 106.
.FRIDAY...Mostly clear. Lows 69 to 79. Highs 96 to 106.
NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION
(3500 MSL)
$$
AZZ152-221415-
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-
140 PM MST Fri Aug 21 2026
.TONIGHT...
* Sky/Weather..............Partly cloudy (35-45 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Min Temperature..........68 to 78 degs.
24 hr Trend...........Up 1 to 4 degs.
* Max Humidity.............40 to 50 pct.
24 hr Trend...........Down 6 to 10 pct.
* Wind (20 ft/10-min avg)..Northwest around 10 mph.
* 10000 ft MSL Wind........East 10 to 15 mph.
.SATURDAY...
* Sky/Weather..............Mostly sunny (20-30 pct) then becoming
partly cloudy (25-35 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........96 to 106 degs.
24 hr Trend...........Up 1 to 4 degs.
* Min Humidity.............12 to 22 pct.
24 hr Trend...........Down 1 to 4 pct.
* Wind (20 ft/10-min avg)..East around 10 mph.
* 10000 ft MSL Wind........Southeast 10 to 15 mph.
* Mixing height............11699 ft AGL.
* Transport winds..........East 8 knots.
* Ventilation Category.....Very good (93592 knot-ft).
.SATURDAY NIGHT...
* Sky/Weather..............Partly cloudy (35-45 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Min Temperature..........68 to 78 degs.
24 hr Trend...........Down 1 to 4 degs.
* Max Humidity.............42 to 52 pct.
24 hr Trend...........Up 6 to 10 pct.
* Wind (20 ft/10-min avg)..Northeast around 10 mph.
* 10000 ft MSL Wind........Southeast 10 to 15 mph.
.SUNDAY...
* Sky/Weather..............Partly cloudy (20-30 pct) then becoming
mostly sunny (15-25 pct).
* Chance of Precip.........0 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........95 to 105 degs.
24 hr Trend...........Down 1 to 4 degs.
* Min Humidity.............13 to 23 pct.
24 hr Trend...........Up 1 pct.
* Wind (20 ft/10-min avg)..Southeast around 10 mph.
* 10000 ft MSL Wind........Southeast 5 to 10 mph.
* Mixing height............11286 ft AGL.
* Transport winds..........Southeast 7 knots.
* Ventilation Category.....Very good (79002 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.MONDAY...Partly cloudy. Lows 68 to 78. Highs 95 to 105.
Northwest wind around 15 mph. Minimum Humidity 13 to 23 pct.
.TUESDAY...Mostly clear. Lows 68 to 78. Highs 97 to 107. North
wind around 15 mph. Minimum Humidity 11 to 21 pct.
.WEDNESDAY...Mostly clear. Lows 69 to 79. Highs 97 to 107.
Northwest wind around 15 mph. Minimum Humidity 10 to 20 pct.
.THURSDAY...Mostly clear. Lows 69 to 79. Highs 97 to 107.
.FRIDAY...Mostly clear. Lows 69 to 79. Highs 97 to 107.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
$$
AZZ153-221415-
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-
140 PM MST Fri Aug 21 2026
.TONIGHT...
* Sky/Weather..............Partly cloudy (40-50 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Min Temperature..........60 to 70 degs.
24 hr Trend...........Up 1 deg.
* Max Humidity.............45 to 55 pct.
24 hr Trend...........Down 5 to 9 pct.
* Wind (20 ft/10-min avg)..North 10 to 15 mph.
* 10000 ft MSL Wind........West around 5 mph shifting to the
northeast after midnight.
.SATURDAY...
* Sky/Weather..............Partly cloudy (35-45 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........20 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........85 to 95 degs.
24 hr Trend...........Up 1 deg.
* Min Humidity.............18 to 28 pct.
24 hr Trend...........Down 2 to 5 pct.
* Wind (20 ft/10-min avg)..East around 10 mph shifting to the
southwest in the afternoon.
* 10000 ft MSL Wind........Southeast 10 to 15 mph.
* Mixing height............11117 ft AGL.
* Transport winds..........East 8 knots shifting to the southwest 9
knots in the afternoon.
* Ventilation Category.....Excellent (100053 knot-ft).
.SATURDAY NIGHT...
* Sky/Weather..............Partly cloudy (40-50 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........20 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........60 to 70 degs.
24 hr Trend...........Little change.
* Max Humidity.............45 to 55 pct.
24 hr Trend...........Up 2 to 5 pct.
* Wind (20 ft/10-min avg)..Northeast around 10 mph.
* 10000 ft MSL Wind........South 5 to 10 mph.
.SUNDAY...
* Sky/Weather..............Partly cloudy (30-40 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Max Temperature..........85 to 95 degs.
24 hr Trend...........Down 1 deg.
* Min Humidity.............17 to 27 pct.
24 hr Trend...........Up 1 pct.
* Wind (20 ft/10-min avg)..East around 10 mph shifting to the
southwest in the afternoon.
* 10000 ft MSL Wind........South 5 to 10 mph.
* Mixing height............13515 ft AGL.
* Transport winds..........East 8 knots shifting to the south 9
knots in the afternoon.
* Ventilation Category.....Excellent (121635 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.MONDAY...Partly cloudy. Lows 60 to 70. Highs 85 to 95. North
wind around 15 mph. Minimum Humidity 15 to 25 pct.
.TUESDAY...Partly cloudy. Lows 60 to 70. Highs 86 to 96. North
wind around 15 mph. Minimum Humidity 15 to 25 pct.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows 60 to 70. Highs 87 to 97. North wind around
15 mph. Minimum Humidity 15 to 25 pct.
.THURSDAY...Partly cloudy. Lows 60 to 70. Highs 86 to 96.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows 60 to 70. Highs 86 to 96.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
$$
AZZ154-221415-
Arizona Fire Weather Zone 154
Forest Woodlands FDRA including the Sky Islands of Southeast
Arizona above 5500 feet-Coronado NF-TDC-
140 PM MST Fri Aug 21 2026
.TONIGHT...
* Sky/Weather..............Partly cloudy (30-40 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Min Temperature..........63 to 73 degs.
24 hr Trend...........Up 1 to 4 degs.
* Max Humidity.............39 to 49 pct.
24 hr Trend...........Down 8 to 12 pct.
* Wind (20 ft/10-min avg)..North around 10 mph.
* 10000 ft MSL Wind........East 10 to 15 mph.
.SATURDAY...
* Sky/Weather..............Mostly sunny (20-30 pct) then becoming
partly cloudy (35-45 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Max Temperature..........85 to 95 degs.
24 hr Trend...........Up 1 deg.
* Min Humidity.............17 to 27 pct.
24 hr Trend...........Down 1 to 4 pct.
* Wind (20 ft/10-min avg)..East around 10 mph.
* 10000 ft MSL Wind........Southeast 10 to 15 mph.
* Mixing height............13544 ft AGL.
* Transport winds..........East 8 to 9 knots.
* Ventilation Category.....Excellent (115124 knot-ft).
.SATURDAY NIGHT...
* Sky/Weather..............Partly cloudy (40-50 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........10 pct.
* Chance of Thunder........10 pct.
* Min Temperature..........63 to 73 degs.
24 hr Trend...........Down 1 deg.
* Max Humidity.............40 to 50 pct.
24 hr Trend...........Up 1 pct.
* Wind (20 ft/10-min avg)..North around 10 mph shifting to the east
after midnight.
* 10000 ft MSL Wind........East 10 to 15 mph.
.SUNDAY...
* Sky/Weather..............Partly cloudy (25-35 pct).
* Chance of Precip.........10 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........83 to 93 degs.
24 hr Trend...........Down 1 to 4 degs.
* Min Humidity.............19 to 29 pct.
24 hr Trend...........Little change.
* Wind (20 ft/10-min avg)..East around 10 mph.
* 10000 ft MSL Wind........East 5 to 10 mph.
* Mixing height............14455 ft AGL.
* Transport winds..........East 7 knots.
* Ventilation Category.....Excellent (101185 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.MONDAY...Partly cloudy. Lows 62 to 72. Highs 83 to 93. Northwest
wind around 15 mph. Minimum Humidity 21 to 31 pct.
.TUESDAY...Mostly clear. Lows 62 to 72. Highs 85 to 95. North
wind around 15 mph. Minimum Humidity 17 to 27 pct.
.WEDNESDAY...Mostly clear. Lows 64 to 74. Highs 86 to 96.
Northwest wind around 15 mph. Minimum Humidity 15 to 25 pct.
.THURSDAY...Partly cloudy. Lows 64 to 74. Highs 86 to 96.
.FRIDAY...Partly cloudy. Lows 64 to 74. Highs 86 to 96.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
$$
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