


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
013 FNUS55 KTWC 221013 FWFTWC Fire Weather Planning Forecast for Southeast Arizona National Weather Service Tucson AZ 313 AM MST Fri Aug 22 2025 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 20-FOOT WIND FORECAST OF `LIGHT WINDS` INDICATES MAINLY TERRAIN DRIVEN WINDS +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ .DISCUSSION...Expect daily chances for rain showers and thunderstorms into next week with day to day variability of intensity and coverage of storms. Temperatures will be running above normal through the weekend with an Extreme Heat Warning in effect today for the lower elevations. Winds will generally remain less than 15 mph with the afternoon gustiness into next week. Min RHs will be 15-20 percent in the low elevations and 20-30 percent in the mountains through the weekend. Deep monsoon moisture will return early next week to provide higher wetting rain chances and coverage as well as better min RHs and below normal temperatures. AZZ150-222200- Arizona Fire Weather Zone 150 Sonoran FDRA-Most of Pima County-South Central Pinal County- Tohono O`odham Nation-Tucson Metropolitan area-TDC- 313 AM MST Fri Aug 22 2025 .TODAY... * Sky/Weather..............Partly cloudy (30-40 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........20 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 2 to 5 pct. * Wind (20 ft/10-min avg)..Light winds. * 10000 ft MSL Wind........East 5 to 10 mph. * Mixing height............13149 ft AGL. * Transport winds..........Southwest 8 to 9 knots. * Ventilation Category.....Excellent (118341 knot-ft). .TONIGHT... * Sky/Weather..............Partly cloudy (35-45 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........20 pct. * Min Temperature..........75 to 85 degs. 24 hr Trend...........Up 1 to 4 degs. * Max Humidity.............52 to 62 pct. 24 hr Trend...........Down 7 to 11 pct. * Wind (20 ft/10-min avg)..Southwest around 10 mph shifting to the south after midnight. * 10000 ft MSL Wind........Northeast around 5 mph shifting to the east after midnight. .SATURDAY... * Sky/Weather..............Partly cloudy (30-40 pct). Chance of showers and slight chance of thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........20 pct. * Max Temperature..........99 to 109 degs. 24 hr Trend...........Little change. * Min Humidity.............18 to 28 pct. 24 hr Trend...........Down 1 pct. * Wind (20 ft/10-min avg)..Light winds. * 10000 ft MSL Wind........East 5 to 10 mph. * Mixing height............14125 ft AGL. * Transport winds..........South 8 knots shifting to the northwest in the afternoon. * Ventilation Category.....Excellent (113000 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 75 to 85. Highs 99 to 109. Light winds. Minimum Humidity 14 to 24 pct. .MONDAY...Showers likely and chance of thunderstorms. Lows 74 to 84. Highs 96 to 106. Light winds. Minimum Humidity 23 to 33 pct. .TUESDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 71 to 81. Highs 90 to 100. Light winds. Minimum Humidity 31 to 41 pct. .WEDNESDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 70 to 80. Highs 87 to 97. .THURSDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows 69 to 79. Highs 88 to 98. NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT LOCATION (2550 MSL) $$ AZZ151-222200- 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- 313 AM MST Fri Aug 22 2025 .TODAY... * 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..........92 to 102 degs. 24 hr Trend...........Down 1 deg. * Min Humidity.............19 to 29 pct. 24 hr Trend...........Down 1 to 4 pct. * Wind (20 ft/10-min avg)..Light winds. * 10000 ft MSL Wind........East 5 to 10 mph. * Mixing height............10945 ft AGL. * Transport winds..........Southeast 9 to 10 knots. * Ventilation Category.....Excellent (109450 knot-ft). .TONIGHT... * Sky/Weather..............Partly cloudy (30-40 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........20 pct. * Chance of Thunder........20 pct. * Min Temperature..........67 to 77 degs. 24 hr Trend...........Little change. * Max Humidity.............54 to 64 pct. 24 hr Trend...........Down 3 to 6 pct. * Wind (20 ft/10-min avg)..West around 10 mph shifting to the northeast after midnight. * 10000 ft MSL Wind........East 5 to 10 mph. .SATURDAY... * Sky/Weather..............Mostly sunny (10-20 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..........93 to 103 degs. 24 hr Trend...........Up 1 deg. * Min Humidity.............16 to 26 pct. 24 hr Trend...........Down 3 to 6 pct. * Wind (20 ft/10-min avg)..Light winds becoming southeast around 10 mph in the afternoon. * 10000 ft MSL Wind........East 10 to 15 mph. * Mixing height............13194 ft AGL. * Transport winds..........East 10 to 12 knots. * Ventilation Category.....Excellent (158328 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 67 to 77. Highs 92 to 102. Light winds. Minimum Humidity 15 to 25 pct. .MONDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 66 to 76. Highs 90 to 100. Light winds. Minimum Humidity 20 to 30 pct. .TUESDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 64 to 74. Highs 85 to 95. Light winds. Minimum Humidity 33 to 43 pct. .WEDNESDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 62 to 72. Highs 82 to 92. .THURSDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 62 to 72. Highs 83 to 93. NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION (3500 MSL) $$ AZZ152-222200- 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- 313 AM MST Fri Aug 22 2025 .TODAY... * 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..........91 to 101 degs. 24 hr Trend...........Down 1 deg. * Min Humidity.............16 to 26 pct. 24 hr Trend...........Down 2 to 5 pct. * Wind (20 ft/10-min avg)..Southeast around 10 mph. * 10000 ft MSL Wind........East 5 to 10 mph. * Mixing height............10862 ft AGL. * Transport winds..........East 10 to 11 knots. * Ventilation Category.....Excellent (119482 knot-ft). .TONIGHT... * Sky/Weather..............Partly cloudy (30-40 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Min Temperature..........67 to 77 degs. 24 hr Trend...........Down 1 deg. * Max Humidity.............45 to 55 pct. 24 hr Trend...........Down 10 to 14 pct. * Wind (20 ft/10-min avg)..Southeast around 10 mph. * 10000 ft MSL Wind........Southeast 5 to 10 mph. .SATURDAY... * Sky/Weather..............Mostly sunny (15-25 pct) then becoming partly cloudy (25-35 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Max Temperature..........92 to 102 degs. 24 hr Trend...........Little change. * Min Humidity.............15 to 25 pct. 24 hr Trend...........Down 1 pct. * Wind (20 ft/10-min avg)..Southeast around 10 mph. * 10000 ft MSL Wind........East 5 to 10 mph. * Mixing height............10999 ft AGL. * Transport winds..........Southeast 9 to 11 knots. * Ventilation Category.....Excellent (120989 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SUNDAY...Mostly clear. Lows 66 to 76. Highs 90 to 100. East wind around 15 mph. Minimum Humidity 14 to 24 pct. .MONDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 65 to 75. Highs 90 to 100. Light winds. Minimum Humidity 15 to 25 pct. .TUESDAY...Mostly cloudy. Chance of thunderstorms and slight chance of showers. Lows 64 to 74. Highs 86 to 96. Light winds. Minimum Humidity 26 to 36 pct. .WEDNESDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 62 to 72. Highs 82 to 92. .THURSDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 62 to 72. Highs 83 to 93. NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL) $$ AZZ153-222200- 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- 313 AM MST Fri Aug 22 2025 .TODAY... * Sky/Weather..............Partly cloudy (35-45 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Max Temperature..........80 to 90 degs. 24 hr Trend...........Up 1 deg. * Min Humidity.............24 to 34 pct. 24 hr Trend...........Down 1 to 4 pct. * Wind (20 ft/10-min avg)..East around 10 mph shifting to the south in the afternoon. * 10000 ft MSL Wind........Southeast 5 to 10 mph. * Mixing height............9945 ft AGL. * Transport winds..........East 10 to 11 knots. * Ventilation Category.....Excellent (109395 knot-ft). .TONIGHT... * 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..........58 to 68 degs. 24 hr Trend...........Little change. * Max Humidity.............50 to 60 pct. 24 hr Trend...........Down 19 to 23 pct. * Wind (20 ft/10-min avg)..Light winds. * 10000 ft MSL Wind........South 10 to 15 mph. .SATURDAY... * Sky/Weather..............Mostly sunny (20-30 pct) then becoming partly cloudy (40-50 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Max Temperature..........80 to 90 degs. 24 hr Trend...........Little change. * Min Humidity.............22 to 32 pct. 24 hr Trend...........Down 1 pct. * Wind (20 ft/10-min avg)..East around 10 mph shifting to the south in the afternoon. * 10000 ft MSL Wind........South 5 to 10 mph. * Mixing height............10103 ft AGL. * Transport winds..........Southeast 8 knots. * Ventilation Category.....Very good (80824 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 58 to 68. Highs 79 to 89. Light winds. Minimum Humidity 20 to 30 pct. .MONDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 58 to 68. Highs 80 to 90. Light winds. Minimum Humidity 20 to 30 pct. .TUESDAY...Showers likely and chance of thunderstorms. Lows 57 to 67. Highs 76 to 86. Light winds. Minimum Humidity 26 to 36 pct. .WEDNESDAY...Thunderstorms likely and chance of showers. Lows 56 to 66. Highs 71 to 81. .THURSDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows 54 to 64. Highs 72 to 82. NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL) $$ AZZ154-222200- Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 313 AM MST Fri Aug 22 2025 .TODAY... * 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..........81 to 91 degs. 24 hr Trend...........Little change. * Min Humidity.............22 to 32 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............11890 ft AGL. * Transport winds..........East 10 to 11 knots. * Ventilation Category.....Excellent (124845 knot-ft). .TONIGHT... * Sky/Weather..............Partly cloudy (25-35 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........20 pct. * Chance of Thunder........20 pct. * Min Temperature..........61 to 71 degs. 24 hr Trend...........Little change. * Max Humidity.............45 to 55 pct. 24 hr Trend...........Down 3 to 6 pct. * Wind (20 ft/10-min avg)..Southeast around 10 mph. * 10000 ft MSL Wind........East 5 to 10 mph. .SATURDAY... * Sky/Weather..............Mostly sunny (10-20 pct) then becoming partly cloudy (25-35 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Max Temperature..........81 to 91 degs. 24 hr Trend...........Little change. * Min Humidity.............19 to 29 pct. 24 hr Trend...........Down 1 to 4 pct. * Wind (20 ft/10-min avg)..East around 10 mph. * 10000 ft MSL Wind........East 10 to 15 mph. * Mixing height............11713 ft AGL. * Transport winds..........East 11 to 13 knots. * Ventilation Category.....Excellent (140556 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 61 to 71. Highs 80 to 90. Southeast wind around 15 mph. Minimum Humidity 18 to 28 pct. .MONDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 60 to 70. Highs 80 to 90. Southeast wind around 15 mph. Minimum Humidity 21 to 31 pct. .TUESDAY...Showers likely and chance of thunderstorms. Lows 58 to 68. Highs 75 to 85. Southwest wind around 15 mph. Minimum Humidity 37 to 47 pct. .WEDNESDAY...Thunderstorms likely and chance of showers. Lows 57 to 67. Highs 72 to 82. .THURSDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 57 to 67. Highs 72 to 82. NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson