Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
922
FNUS55 KTWC 182217
FWFTWC
Fire Weather Planning Forecast for Southeast Arizona
National Weather Service Tucson AZ
317 PM MST Tue Nov 18 2025
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20-FOOT WIND FORECAST OF `LIGHT WINDS` INDICATES MAINLY
TERRAIN DRIVEN WINDS
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.DISCUSSION...
A storm system will begin to impact Southeast
Arizona this afternoon/evening across central and western Pima
county, then the rest of Southeast Arizona Wednesday into
Thursday. This system will bring numerous showers with a slight
chance of thunderstorms, snowfall to the mountains above 7000
feet, well below normal temperatures and breezy south to southwest
winds. Isolated to scattered rain showers will likely become
widespread from late Wednesday afternoon through early Thursday
morning. Minimum RH values will be well above critical levels
over the next week, with values generally 35-45 percent in the
valleys and 65-75+ percent in the mountains.
AZZ150-191415-
Arizona Fire Weather Zone 150
Sonoran FDRA-Most of Pima County-South Central Pinal County-
Tohono O`odham Nation-Tucson Metropolitan area-TDC-
317 PM MST Tue Nov 18 2025
.TONIGHT...
* Sky/Weather..............Mostly cloudy (55-65 pct). Chance of
showers and slight chance of
thunderstorms.
* Chance of Precip.........30 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........47 to 57 degs.
24 hr Trend...........Down 1 deg.
* Max Humidity.............85 to 95 pct.
24 hr Trend...........Up 1 to 4 pct.
* Wind (20 ft/10-min avg)..South 10 to 15 mph.
* 10000 ft MSL Wind........South 35 to 40 mph.
.WEDNESDAY...
* Sky/Weather..............Mostly cloudy (60-70 pct). Chance of
showers and slight chance of
thunderstorms.
* Chance of Precip.........60 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........59 to 69 degs.
24 hr Trend...........Down 3 to 6 degs.
* Min Humidity.............56 to 66 pct.
24 hr Trend...........Up 8 to 12 pct.
* Wind (20 ft/10-min avg)..South 10 to 15 mph.
* 10000 ft MSL Wind........South 30 to 35 mph.
* Mixing height............5826 ft AGL.
* Transport winds..........South 13 to 15 knots.
* Ventilation Category.....Very good (87390 knot-ft).
.WEDNESDAY NIGHT...
* Sky/Weather..............Mostly cloudy (70-80 pct). Showers and
slight chance of thunderstorms.
* Chance of Precip.........80 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........43 to 53 degs.
24 hr Trend...........Down 3 to 7 degs.
* Max Humidity.............87 to 97 pct.
24 hr Trend...........Up 2 to 5 pct.
* Wind (20 ft/10-min avg)..Southwest around 10 mph.
* 10000 ft MSL Wind........South 25 to 30 mph.
.THURSDAY...
* Sky/Weather..............Mostly cloudy (50-60 pct) then becoming
partly cloudy (35-45 pct). Slight chance
of showers.
* Chance of Precip.........30 pct.
* Chance of Thunder........0 pct.
* Max Temperature..........55 to 65 degs.
24 hr Trend...........Down 3 to 7 degs.
* Min Humidity.............51 to 61 pct.
24 hr Trend...........Down 3 to 6 pct.
* Wind (20 ft/10-min avg)..Southwest around 10 mph.
* 10000 ft MSL Wind........West 15 to 20 mph.
* Mixing height............5666 ft AGL.
* Transport winds..........Southwest 10 to 11 knots.
* Ventilation Category.....Good (62326 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.FRIDAY...Mostly cloudy. Chance of showers. Lows 38 to 48. Highs
58 to 68. Light winds. Minimum Humidity 42 to 52 pct.
.SATURDAY...Mostly cloudy. Chance of showers. Lows 41 to 51.
Highs 60 to 70. Light winds. Minimum Humidity 44 to 54 pct.
.SUNDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 42 to 52. Highs 58 to 68. Light winds.
Minimum Humidity 52 to 62 pct.
.MONDAY...Clear. Lows 40 to 50. Highs 62 to 72.
.TUESDAY...Mostly clear. Lows 40 to 50. Highs 64 to 74.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
$$
AZZ151-191415-
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-
317 PM MST Tue Nov 18 2025
.TONIGHT...
* Sky/Weather..............Mostly cloudy (55-65 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........20 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........42 to 52 degs.
24 hr Trend...........Up 1 to 4 degs.
* Max Humidity.............86 to 96 pct.
24 hr Trend...........Up 3 to 6 pct.
* Wind (20 ft/10-min avg)..South 10 to 15 mph.
* 10000 ft MSL Wind........South 30 to 35 mph.
.WEDNESDAY...
* Sky/Weather..............Mostly cloudy (55-65 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........50 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........59 to 69 degs.
24 hr Trend...........Down 1 to 4 degs.
* Min Humidity.............52 to 62 pct.
24 hr Trend...........Up 2 to 5 pct.
* Wind (20 ft/10-min avg)..South 15 to 20 mph.
* 10000 ft MSL Wind........South 30 to 35 mph.
* Mixing height............4513 ft AGL.
* Transport winds..........South 20 to 24 knots.
* Ventilation Category.....Excellent (108312 knot-ft).
.WEDNESDAY NIGHT...
* Sky/Weather..............Mostly cloudy (75-85 pct). Showers and
slight chance of thunderstorms.
* Chance of Precip.........90 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........38 to 48 degs.
24 hr Trend...........Down 3 to 6 degs.
* Max Humidity.............88 to 98 pct.
24 hr Trend...........Up 1 to 4 pct.
* Wind (20 ft/10-min avg)..South 10 to 15 mph.
* 10000 ft MSL Wind........South 30 to 35 mph.
.THURSDAY...
* Sky/Weather..............Mostly cloudy (55-65 pct). Chance of
showers and slight chance of
thunderstorms.
* Chance of Precip.........50 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........50 to 60 degs.
24 hr Trend...........Down 5 to 9 degs.
* Min Humidity.............55 to 65 pct.
24 hr Trend...........Up 3 to 6 pct.
* Wind (20 ft/10-min avg)..Southwest 10 to 15 mph.
* 10000 ft MSL Wind........Southwest 15 to 20 mph.
* Mixing height............5118 ft AGL.
* Transport winds..........Southwest 14 to 16 knots.
* Ventilation Category.....Very good (81888 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.FRIDAY...Partly cloudy. Slight chance of showers. Lows 31 to 41.
Highs 55 to 65. Light winds. Minimum Humidity 35 to 45 pct.
.SATURDAY...Mostly cloudy. Chance of showers. Lows 36 to 46.
Highs 56 to 66. Light winds. Minimum Humidity 42 to 52 pct.
.SUNDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 36 to 46. Highs 53 to 63. Light winds.
Minimum Humidity 55 to 65 pct.
.MONDAY...Mostly clear. Lows 34 to 44. Highs 57 to 67.
.TUESDAY...Mostly clear. Lows 34 to 44. Highs 61 to 71.
NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION
(3500 MSL)
$$
AZZ152-191415-
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-
317 PM MST Tue Nov 18 2025
.TONIGHT...
* Sky/Weather..............Mostly cloudy (60-70 pct). Chance of
showers and slight chance of
thunderstorms.
* Chance of Precip.........40 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........43 to 53 degs.
24 hr Trend...........Up 3 to 6 degs.
* Max Humidity.............84 to 94 pct.
24 hr Trend...........Up 6 to 10 pct.
* Wind (20 ft/10-min avg)..Southeast 10 to 15 mph.
* 10000 ft MSL Wind........South 25 to 30 mph.
.WEDNESDAY...
* Sky/Weather..............Mostly cloudy (60-70 pct). Chance of
showers and slight chance of
thunderstorms.
* Chance of Precip.........60 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........59 to 69 degs.
24 hr Trend...........Down 1 to 4 degs.
* Min Humidity.............55 to 65 pct.
24 hr Trend...........Up 10 to 14 pct.
* Wind (20 ft/10-min avg)..South 10 to 15 mph.
* 10000 ft MSL Wind........South 30 to 35 mph.
* Mixing height............5246 ft AGL.
* Transport winds..........South 19 to 23 knots.
* Ventilation Category.....Excellent (120658 knot-ft).
.WEDNESDAY NIGHT...
* Sky/Weather..............Mostly cloudy (80-90 pct). Showers
likely and chance of thunderstorms.
* Chance of Precip.........90 pct.
* Chance of Thunder........50 pct.
* Min Temperature..........39 to 49 degs.
24 hr Trend...........Down 3 to 6 degs.
* Max Humidity.............85 to 95 pct.
24 hr Trend...........Up 1 pct.
* Wind (20 ft/10-min avg)..South 10 to 15 mph.
* 10000 ft MSL Wind........South 30 to 35 mph.
.THURSDAY...
* Sky/Weather..............Mostly cloudy (55-65 pct). Chance of
showers and slight chance of
thunderstorms.
* Chance of Precip.........60 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........49 to 59 degs.
24 hr Trend...........Down 7 to 11 degs.
* Min Humidity.............61 to 71 pct.
24 hr Trend...........Up 1 to 4 pct.
* Wind (20 ft/10-min avg)..Southwest 10 to 15 mph.
* 10000 ft MSL Wind........Southwest 20 to 25 mph.
* Mixing height............5322 ft AGL.
* Transport winds..........Southwest 16 to 17 knots.
* Ventilation Category.....Very good (90474 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.FRIDAY...Partly cloudy. Lows 30 to 40. Highs 53 to 63. Light
winds. Minimum Humidity 38 to 48 pct.
.SATURDAY...Mostly cloudy. Chance of showers. Lows 35 to 45.
Highs 56 to 66. Light winds. Minimum Humidity 40 to 50 pct.
.SUNDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 36 to 46. Highs 52 to 62. Light winds.
Minimum Humidity 54 to 64 pct.
.MONDAY...Mostly clear. Lows 33 to 43. Highs 55 to 65.
.TUESDAY...Mostly clear. Lows 33 to 43. Highs 58 to 68.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
$$
AZZ153-191415-
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-
317 PM MST Tue Nov 18 2025
.TONIGHT...
* Sky/Weather..............Mostly cloudy (70-80 pct). Chance of
showers and slight chance of
thunderstorms.
* Chance of Precip.........60 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........36 to 46 degs.
24 hr Trend...........Up 1 to 4 degs.
* Max Humidity.............86 to 96 pct.
24 hr Trend...........Up 7 to 11 pct.
* Wind (20 ft/10-min avg)..South around 10 mph.
* 10000 ft MSL Wind........South 25 to 30 mph.
.WEDNESDAY...
* Sky/Weather..............Mostly cloudy (65-75 pct). Chance of
showers and slight chance of
thunderstorms.
* Chance of Precip.........70 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........46 to 56 degs.
24 hr Trend...........Down 1 deg.
* Min Humidity.............73 to 83 pct.
24 hr Trend...........Up 17 to 21 pct.
* Wind (20 ft/10-min avg)..South around 10 mph.
* 10000 ft MSL Wind........South 20 to 25 mph.
* Mixing height............3753 ft AGL.
* Transport winds..........South 18 knots.
* Ventilation Category.....Good (67554 knot-ft).
.WEDNESDAY NIGHT...
* Sky/Weather..............Cloudy (85-95 pct). Showers and chance
of thunderstorms.
* Chance of Precip.........90 pct.
* Chance of Thunder........50 pct.
* Min Temperature..........32 to 42 degs.
24 hr Trend...........Down 3 to 6 degs.
* Max Humidity.............87 to 97 pct.
24 hr Trend...........Up 2 to 5 pct.
* Wind (20 ft/10-min avg)..Southeast around 10 mph.
* 10000 ft MSL Wind........South 20 to 25 mph.
.THURSDAY...
* Sky/Weather..............Mostly cloudy (70-80 pct). Chance of
showers, snow showers and slight chance
of thunderstorms.
* Chance of Precip.........80 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........38 to 48 degs.
24 hr Trend...........Down 6 to 10 degs.
* Min Humidity.............74 to 84 pct.
24 hr Trend...........Up 3 to 7 pct.
* Wind (20 ft/10-min avg)..Southwest around 10 mph.
* 10000 ft MSL Wind........South around 15 mph shifting to the
southwest in the afternoon.
* Mixing height............3097 ft AGL.
* Transport winds..........South 13 knots shifting to the west in
the afternoon.
* Ventilation Category.....Good (40261 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.FRIDAY...Partly cloudy. Lows 25 to 35. Highs 43 to 53. Light
winds. Minimum Humidity 46 to 56 pct.
.SATURDAY...Mostly cloudy. Slight chance of showers. Lows 29 to
39. Highs 47 to 57. Light winds. Minimum Humidity 43 to 53 pct.
.SUNDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 32 to 42. Highs 43 to 53. Light winds.
Minimum Humidity 62 to 72 pct.
.MONDAY...Mostly clear. Lows 28 to 38. Highs 49 to 59.
.TUESDAY...Mostly clear. Lows 28 to 38. Highs 51 to 61.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
$$
AZZ154-191415-
Arizona Fire Weather Zone 154
Forest Woodlands FDRA including the Sky Islands of Southeast
Arizona above 5500 feet-Coronado NF-TDC-
317 PM MST Tue Nov 18 2025
.TONIGHT...
* Sky/Weather..............Mostly cloudy (55-65 pct). Slight chance
of showers and thunderstorms.
* Chance of Precip.........30 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........39 to 49 degs.
24 hr Trend...........Up 1 deg.
* Max Humidity.............86 to 96 pct.
24 hr Trend...........Up 6 to 10 pct.
* Wind (20 ft/10-min avg)..South 10 to 15 mph.
* 10000 ft MSL Wind........South 25 to 30 mph.
.WEDNESDAY...
* Sky/Weather..............Mostly cloudy (60-70 pct). Chance of
showers and slight chance of
thunderstorms.
* Chance of Precip.........50 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........50 to 60 degs.
24 hr Trend...........Down 1 deg.
* Min Humidity.............62 to 72 pct.
24 hr Trend...........Up 6 to 10 pct.
* Wind (20 ft/10-min avg)..South 15 to 20 mph.
* 10000 ft MSL Wind........South 30 to 35 mph.
* Mixing height............5013 ft AGL.
* Transport winds..........South 21 to 26 knots.
* Ventilation Category.....Excellent (117805 knot-ft).
.WEDNESDAY NIGHT...
* Sky/Weather..............Mostly cloudy (75-85 pct). Showers and
slight chance of thunderstorms.
* Chance of Precip.........90 pct.
* Chance of Thunder........20 pct.
* Min Temperature..........34 to 44 degs.
24 hr Trend...........Down 4 to 8 degs.
* Max Humidity.............86 to 96 pct.
24 hr Trend...........Up 1 to 4 pct.
* Wind (20 ft/10-min avg)..South 10 to 15 mph.
* 10000 ft MSL Wind........South 30 to 35 mph.
.THURSDAY...
* Sky/Weather..............Mostly cloudy (55-65 pct). Chance of
showers, snow showers and slight chance
of thunderstorms.
* Chance of Precip.........50 pct.
* Chance of Thunder........20 pct.
* Max Temperature..........40 to 50 degs.
24 hr Trend...........Down 7 to 11 degs.
* Min Humidity.............66 to 76 pct.
24 hr Trend...........Up 1 to 4 pct.
* Wind (20 ft/10-min avg)..Southwest 10 to 15 mph.
* 10000 ft MSL Wind........Southwest 20 to 25 mph.
* Mixing height............5712 ft AGL.
* Transport winds..........Southwest 18 knots.
* Ventilation Category.....Excellent (102816 knot-ft).
.Forecast days 3 through 7......
Winds in Days 3 through 5 are surface 20 ft/10-min avg
.FRIDAY...Partly cloudy. Lows 28 to 38. Highs 45 to 55. Light
winds. Minimum Humidity 45 to 55 pct.
.SATURDAY...Mostly cloudy. Chance of showers. Lows 34 to 44.
Highs 47 to 57. Light winds. Minimum Humidity 47 to 57 pct.
.SUNDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 34 to 44. Highs 43 to 53. Light winds.
Minimum Humidity 65 to 75 pct.
.MONDAY...Mostly clear. Lows 31 to 41. Highs 47 to 57.
.TUESDAY...Mostly clear. Lows 32 to 42. Highs 51 to 61.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
$$
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