


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
542 FNUS55 KTWC 312005 FWFTWC Fire Weather Planning Forecast for Southeast Arizona National Weather Service Tucson AZ 105 PM MST Thu Jul 31 2025 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 20-FOOT WIND FORECAST OF `LIGHT WINDS` INDICATES MAINLY TERRAIN DRIVEN WINDS +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ .DISCUSSION... Minimum relative humidities mainly above 20 percent today across southeastern Arizona. Scattered thunderstorms are expected this afternoon and evening. Overall winds are expected to remain under 15 mph with occasional afternoon gustiness, however strong erratic winds are possible with any thunderstorm. A drying trend is expected through the weekend with high temperatures bumping up. AZZ150-011415- Arizona Fire Weather Zone 150 Sonoran FDRA-Most of Pima County-South Central Pinal County- Tohono O`odham Nation-Tucson Metropolitan area-TDC- 105 PM MST Thu Jul 31 2025 .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..........74 to 84 degs. 24 hr Trend...........Up 1 deg. * Max Humidity.............40 to 50 pct. 24 hr Trend...........Down 1 pct. * Wind (20 ft/10-min avg)..Southwest around 10 mph shifting to the southeast after midnight. * 10000 ft MSL Wind........South 10 to 15 mph. .FRIDAY... * Sky/Weather..............Mostly sunny (5-15 pct) then becoming partly cloudy (25-35 pct). * Chance of Precip.........10 pct. * Chance of Thunder........0 pct. * Max Temperature..........101 to 111 degs. 24 hr Trend...........Up 1 to 4 degs. * Min Humidity.............12 to 22 pct. 24 hr Trend...........Down 4 to 8 pct. * Wind (20 ft/10-min avg)..Light winds becoming west around 10 mph in the afternoon. * 10000 ft MSL Wind........South 10 to 15 mph. * Mixing height............12992 ft AGL. * Transport winds..........Southeast 8 knots shifting to the southwest 11 knots in the afternoon. * Ventilation Category.....Excellent (142912 knot-ft). .FRIDAY NIGHT... * Sky/Weather..............Partly cloudy (30-40 pct). * Chance of Precip.........10 pct. * Chance of Thunder........0 pct. * Min Temperature..........74 to 84 degs. 24 hr Trend...........Little change. * Max Humidity.............24 to 34 pct. 24 hr Trend...........Down 14 to 18 pct. * Wind (20 ft/10-min avg)..West around 10 mph shifting to the south after midnight. * 10000 ft MSL Wind........Southeast 10 to 15 mph. .SATURDAY... * Sky/Weather..............Mostly sunny (10-20 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Max Temperature..........103 to 113 degs. 24 hr Trend...........Up 1 to 4 degs. * Min Humidity.............9 to 19 pct. 24 hr Trend...........Down 3 to 6 pct. * Wind (20 ft/10-min avg)..Light winds becoming west around 10 mph in the afternoon. * 10000 ft MSL Wind........Southwest 10 to 15 mph. * Mixing height............13149 ft AGL. * Transport winds..........South 8 knots shifting to the southwest 11 knots in the afternoon. * Ventilation Category.....Excellent (144639 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SUNDAY...Mostly clear. Lows 72 to 82. Highs 101 to 111. Light winds. Minimum Humidity 7 to 17 pct. .MONDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 72 to 82. Highs 100 to 110. Light winds. Minimum Humidity 12 to 22 pct. .TUESDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 74 to 84. Highs 101 to 111. Light winds. Minimum Humidity 12 to 21 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 76 to 86. Highs 104 to 114. .THURSDAY...Partly cloudy. Lows 76 to 86. Highs 104 to 114. NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT LOCATION (2550 MSL) $$ AZZ151-011415- 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- 105 PM MST Thu Jul 31 2025 .TONIGHT... * Sky/Weather..............Partly cloudy (35-45 pct). Chance of showers and thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........40 pct. * Min Temperature..........67 to 77 degs. 24 hr Trend...........Up 1 deg. * Max Humidity.............54 to 64 pct. 24 hr Trend...........Down 3 to 6 pct. * Wind (20 ft/10-min avg)..Southwest around 10 mph shifting to the southeast after midnight. * 10000 ft MSL Wind........West around 10 mph shifting to the northeast after midnight. .FRIDAY... * Sky/Weather..............Mostly sunny (5-15 pct) then becoming partly cloudy (25-35 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........20 pct. * Max Temperature..........94 to 104 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........Southeast around 5 mph shifting to the southwest in the afternoon. * Mixing height............12727 ft AGL. * Transport winds..........East 7 knots shifting to the west in the afternoon. * Ventilation Category.....Very good (89089 knot-ft). .FRIDAY NIGHT... * Sky/Weather..............Partly cloudy (30-40 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Min Temperature..........68 to 78 degs. 24 hr Trend...........Up 1 deg. * Max Humidity.............42 to 52 pct. 24 hr Trend...........Down 10 to 14 pct. * Wind (20 ft/10-min avg)..Southwest around 10 mph shifting to the south after midnight. * 10000 ft MSL Wind........Northwest around 5 mph shifting to the east after midnight. .SATURDAY... * Sky/Weather..............Mostly sunny (20-30 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Max Temperature..........95 to 105 degs. 24 hr Trend...........Up 1 to 4 degs. * Min Humidity.............12 to 22 pct. 24 hr Trend...........Down 3 to 7 pct. * Wind (20 ft/10-min avg)..Light winds becoming west around 10 mph in the afternoon. * 10000 ft MSL Wind........Southeast around 5 mph shifting to the south in the afternoon. * Mixing height............13621 ft AGL. * Transport winds..........Northeast 6 knots shifting to the west 9 knots in the afternoon. * Ventilation Category.....Excellent (122589 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 95 to 105. West wind around 15 mph. Minimum Humidity 7 to 16 pct. .MONDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 66 to 76. Highs 95 to 105. Light winds. Minimum Humidity 12 to 22 pct. .TUESDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 67 to 77. Highs 96 to 106. Light winds. Minimum Humidity 13 to 23 pct. .WEDNESDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 69 to 79. Highs 97 to 107. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 69 to 79. Highs 98 to 108. NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION (3500 MSL) $$ AZZ152-011415- 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- 105 PM MST Thu Jul 31 2025 .TONIGHT... * Sky/Weather..............Mostly cloudy (50-60 pct) then becoming partly cloudy (30-40 pct). Chance of showers and thunderstorms. * Chance of Precip.........50 pct. * Chance of Thunder........50 pct. * Min Temperature..........66 to 76 degs. 24 hr Trend...........Up 1 deg. * Max Humidity.............58 to 68 pct. 24 hr Trend...........Down 2 to 5 pct. * Wind (20 ft/10-min avg)..South around 10 mph shifting to the east after midnight. * 10000 ft MSL Wind........Northwest around 5 mph shifting to the north after midnight. .FRIDAY... * Sky/Weather..............Mostly sunny (15-25 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..........92 to 102 degs. 24 hr Trend...........Up 1 deg. * Min Humidity.............17 to 27 pct. 24 hr Trend...........Down 2 to 5 pct. * Wind (20 ft/10-min avg)..East around 10 mph. * 10000 ft MSL Wind........East around 5 mph shifting to the south in the afternoon. * Mixing height............9174 ft AGL. * Transport winds..........Southeast 8 knots. * Ventilation Category.....Very good (73392 knot-ft). .FRIDAY NIGHT... * Sky/Weather..............Partly cloudy (30-40 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Min Temperature..........67 to 77 degs. 24 hr Trend...........Up 1 to 4 degs. * Max Humidity.............47 to 57 pct. 24 hr Trend...........Down 10 to 14 pct. * Wind (20 ft/10-min avg)..East around 10 mph. * 10000 ft MSL Wind........South 5 to 10 mph. .SATURDAY... * Sky/Weather..............Mostly sunny (10-20 pct) then becoming partly cloudy (20-30 pct). * Chance of Precip.........10 pct. * Chance of Thunder........0 pct. * Max Temperature..........94 to 104 degs. 24 hr Trend...........Up 1 to 4 degs. * Min Humidity.............14 to 24 pct. 24 hr Trend...........Down 3 to 6 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........South 5 to 10 mph. * Mixing height............9916 ft AGL. * Transport winds..........East 5 knots shifting to the southwest 9 knots in the afternoon. * Ventilation Category.....Very good (89244 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 95 to 105. Northwest wind around 15 mph. Minimum Humidity 6 to 16 pct. .MONDAY...Mostly clear. Lows 65 to 75. Highs 95 to 105. Light winds. Minimum Humidity 8 to 18 pct. .TUESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 66 to 76. Highs 96 to 106. Light winds. Minimum Humidity 9 to 19 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 68 to 78. Highs 97 to 107. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 68 to 78. 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) $$ AZZ153-011415- 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- 105 PM MST Thu Jul 31 2025 .TONIGHT... * Sky/Weather..............Partly cloudy (35-45 pct). Chance of showers and thunderstorms. * Chance of Precip.........50 pct. * Chance of Thunder........50 pct. * Min Temperature..........57 to 67 degs. 24 hr Trend...........Little change. * Max Humidity.............62 to 72 pct. 24 hr Trend...........Up 1 pct. * Wind (20 ft/10-min avg)..Northeast around 10 mph. * 10000 ft MSL Wind........West 5 to 10 mph. .FRIDAY... * Sky/Weather..............Mostly sunny (15-25 pct) then becoming partly cloudy (40-50 pct). Chance of showers and thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........40 pct. * Max Temperature..........80 to 90 degs. 24 hr Trend...........Little change. * Min Humidity.............26 to 36 pct. 24 hr Trend...........Down 1 to 4 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........East around 5 mph shifting to the south in the afternoon. * Mixing height............9184 ft AGL. * Transport winds..........East 7 knots shifting to the southwest 8 knots in the afternoon. * Ventilation Category.....Very good (73472 knot-ft). .FRIDAY NIGHT... * 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..........59 to 69 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)..Light winds becoming northeast around 10 mph after midnight. * 10000 ft MSL Wind........Southwest 10 to 15 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..........84 to 94 degs. 24 hr Trend...........Up 2 to 5 degs. * Min Humidity.............17 to 27 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 5 to 10 mph. * Mixing height............11683 ft AGL. * Transport winds..........East 6 knots shifting to the southwest 10 knots in the afternoon. * Ventilation Category.....Excellent (116830 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SUNDAY...Mostly clear. Lows 58 to 68. Highs 85 to 95. Northwest wind around 15 mph. Minimum Humidity 8 to 12 pct. .MONDAY...Mostly clear. Lows 57 to 67. Highs 85 to 95. Light winds. Minimum Humidity 9 to 16 pct. .TUESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 59 to 69. Highs 86 to 96. Light winds. Minimum Humidity 10 to 18 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 60 to 70. Highs 87 to 97. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 60 to 70. Highs 87 to 97. NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL) $$ AZZ154-011415- Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 105 PM MST Thu Jul 31 2025 .TONIGHT... * Sky/Weather..............Partly cloudy (35-45 pct). Chance of showers and thunderstorms. * Chance of Precip.........50 pct. * Chance of Thunder........50 pct. * Min Temperature..........61 to 71 degs. 24 hr Trend...........Up 1 deg. * Max Humidity.............54 to 64 pct. 24 hr Trend...........Down 2 to 5 pct. * Wind (20 ft/10-min avg)..Southwest around 10 mph shifting to the northeast after midnight. * 10000 ft MSL Wind........Northwest around 5 mph shifting to the northeast after midnight. .FRIDAY... * Sky/Weather..............Mostly sunny (15-25 pct) then becoming partly cloudy (35-45 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Max Temperature..........82 to 92 degs. 24 hr Trend...........Up 1 deg. * Min Humidity.............28 to 38 pct. 24 hr Trend...........Down 2 to 5 pct. * Wind (20 ft/10-min avg)..East around 10 mph. * 10000 ft MSL Wind........East around 5 mph shifting to the south in the afternoon. * Mixing height............10366 ft AGL. * Transport winds..........East 7 to 8 knots. * Ventilation Category.....Very good (77745 knot-ft). .FRIDAY NIGHT... * Sky/Weather..............Partly cloudy (30-40 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Min Temperature..........63 to 73 degs. 24 hr Trend...........Up 1 to 4 degs. * Max Humidity.............44 to 54 pct. 24 hr Trend...........Down 9 to 13 pct. * Wind (20 ft/10-min avg)..South around 10 mph. * 10000 ft MSL Wind........Northwest around 5 mph shifting to the east after midnight. .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..........83 to 93 degs. 24 hr Trend...........Up 1 to 4 degs. * Min Humidity.............24 to 34 pct. 24 hr Trend...........Down 4 to 8 pct. * Wind (20 ft/10-min avg)..Light winds becoming northwest around 10 mph in the afternoon. * 10000 ft MSL Wind........Southeast 5 to 10 mph. * Mixing height............11916 ft AGL. * Transport winds..........Northeast 6 knots shifting to the west 7 knots in the afternoon. * Ventilation Category.....Very good (83412 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SUNDAY...Mostly clear. Lows 62 to 72. Highs 84 to 94. West wind around 15 mph. Minimum Humidity 10 to 20 pct. .MONDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 61 to 71. Highs 84 to 94. Light winds. Minimum Humidity 13 to 23 pct. .TUESDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 62 to 72. Highs 86 to 96. Light winds. Minimum Humidity 14 to 24 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 63 to 73. Highs 87 to 97. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 64 to 74. Highs 87 to 97. 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