985
FNUS55 KTWC 170938
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
238 AM MST WED SEP 17 2025
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
ABOVE NORMAL MOISTURE THIS WEEK LEADING TO MIN RH 20-
40 PERCENT THROUGH THE WEEKEND. EXPECT SCATTERED SHOWER AND
THUNDERSTORM CHANCES (30-60 PCT CHANCE) EACH DAY THROUGH FRIDAY,
THEN DIMINISHED THUNDERSTORM CHANCES THIS WEEKEND. DRY CONDITIONS
RETURN NEXT WEEK. 20-FOOT WINDS WILL BE 8-12 MPH WITH SOME
AFTERNOON/EARLY EVENING GUSTS TO AROUND 20 MPH OVER THE NEXT WEEK
WITH NORMAL DIURNAL PATTERNS THROUGH THE WEEKEND.
AZZ150-172215-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
238 AM MST WED SEP 17 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........30 PCT.
* MAX TEMPERATURE..........90 TO 100 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MIN HUMIDITY.............28 TO 38 PCT.
24 HR TREND...........UP 6 TO 10 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........NORTHEAST AROUND 15 MPH BECOMING EAST
AROUND 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT............8843 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 7 KNOTS SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* VENTILATION CATEGORY.....GOOD (61901 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........30 PCT.
* MIN TEMPERATURE..........69 TO 79 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............66 TO 76 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH AROUND 10 MPH.
* 10000 FT MSL WIND........EAST 10 TO 15 MPH.
THURSDAY
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT) THEN BECOMING
MOSTLY CLOUDY (50-60 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........50 PCT.
* CHANCE OF THUNDER........50 PCT.
* MAX TEMPERATURE..........88 TO 98 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............33 TO 43 PCT.
24 HR TREND...........UP 3 TO 6 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........SOUTH 10 TO 15 MPH.
* MIXING HEIGHT............7613 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 9 KNOTS SHIFTING TO THE
NORTHWEST 7 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....GOOD (53291 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS 69 TO 79. HIGHS 89 TO 99. LIGHT WINDS.
MINIMUM HUMIDITY 29 TO 39 PCT.
SATURDAY
MOSTLY CLEAR. LOWS 69 TO 79. HIGHS 90 TO 100. LIGHT
WINDS. MINIMUM HUMIDITY 26 TO 36 PCT.
SUNDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 70 TO 80. HIGHS 92 TO 102. LIGHT WINDS.
MINIMUM HUMIDITY 22 TO 32 PCT.
MONDAY
MOSTLY CLEAR. LOWS 70 TO 80. HIGHS 94 TO 104.
TUESDAY
MOSTLY CLEAR. LOWS 71 TO 81. HIGHS 97 TO 107.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
AZZ151-172215-
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-
238 AM MST WED SEP 17 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........50 PCT.
* CHANCE OF THUNDER........50 PCT.
* MAX TEMPERATURE..........83 TO 93 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............31 TO 41 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........SOUTHEAST 5 TO 10 MPH.
* MIXING HEIGHT............7454 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 7 TO 9 KNOTS.
* VENTILATION CATEGORY.....GOOD (67086 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........40 PCT.
* MIN TEMPERATURE..........61 TO 71 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............75 TO 85 PCT.
24 HR TREND...........UP 5 TO 9 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH AROUND 10 MPH.
* 10000 FT MSL WIND........NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHEAST AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT) THEN BECOMING
MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........40 PCT.
* MAX TEMPERATURE..........82 TO 92 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............36 TO 46 PCT.
24 HR TREND...........UP 3 TO 6 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........SOUTHWEST 5 TO 10 MPH.
* MIXING HEIGHT............5827 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 6 KNOTS SHIFTING TO THE
NORTHWEST 8 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....GOOD (46616 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 61 TO 71. HIGHS 83 TO 93. LIGHT WINDS. MINIMUM HUMIDITY
36 TO 46 PCT.
SATURDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 61 TO 71. HIGHS 84 TO 94. LIGHT WINDS.
MINIMUM HUMIDITY 33 TO 43 PCT.
SUNDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 62 TO 72. HIGHS 86 TO 96. LIGHT WINDS.
MINIMUM HUMIDITY 26 TO 36 PCT.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 62 TO 72. HIGHS 87 TO 97.
TUESDAY
MOSTLY CLEAR. LOWS 63 TO 73. HIGHS 89 TO 99.
NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION
(3500 MSL)
AZZ152-172215-
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-
238 AM MST WED SEP 17 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........40 PCT.
* MAX TEMPERATURE..........82 TO 92 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............30 TO 40 PCT.
24 HR TREND...........UP 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 AROUND 10 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* MIXING HEIGHT............5902 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 8 KNOTS.
* VENTILATION CATEGORY.....GOOD (47216 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (60-70 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........30 PCT.
* MIN TEMPERATURE..........61 TO 71 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............73 TO 83 PCT.
24 HR TREND...........UP 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH SHIFTING TO THE
EAST AFTER MIDNIGHT.
* 10000 FT MSL WIND........NORTH AROUND 5 MPH SHIFTING TO THE EAST
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT) THEN BECOMING
MOSTLY CLOUDY (50-60 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........30 PCT.
* MAX TEMPERATURE..........81 TO 91 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............32 TO 42 PCT.
24 HR TREND...........UP 2 TO 5 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING WEST AROUND 10 MPH
IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTH 5 TO 10 MPH.
* MIXING HEIGHT............5112 FT AGL.
* TRANSPORT WINDS..........NORTHWEST 6 TO 8 KNOTS.
* VENTILATION CATEGORY.....GOOD (40896 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 AND THUNDERSTORMS.
LOWS 60 TO 70. HIGHS 82 TO 92. LIGHT WINDS. MINIMUM HUMIDITY
36 TO 46 PCT.
SATURDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 59 TO 69. HIGHS 83 TO 93. LIGHT WINDS.
MINIMUM HUMIDITY 30 TO 40 PCT.
SUNDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 61 TO 71. HIGHS 85 TO 95. LIGHT WINDS.
MINIMUM HUMIDITY 23 TO 33 PCT.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 60 TO 70. HIGHS 87 TO 97.
TUESDAY
MOSTLY CLEAR. LOWS 61 TO 71. HIGHS 87 TO 97.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
AZZ153-172215-
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-
238 AM MST WED SEP 17 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........40 PCT.
* MAX TEMPERATURE..........72 TO 82 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............38 TO 48 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING SOUTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* MIXING HEIGHT............7693 FT AGL.
* TRANSPORT WINDS..........EAST 6 KNOTS SHIFTING TO THE SOUTH 7
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....GOOD (53851 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE EVENING.
* CHANCE OF PRECIP.........20 PCT.
* CHANCE OF THUNDER........20 PCT.
* MIN TEMPERATURE..........52 TO 62 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............71 TO 81 PCT.
24 HR TREND...........DOWN 3 TO 6 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........NORTHWEST 5 TO 10 MPH.
THURSDAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........30 PCT.
* MAX TEMPERATURE..........71 TO 81 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............33 TO 43 PCT.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING SOUTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* MIXING HEIGHT............4958 FT AGL.
* TRANSPORT WINDS..........NORTHWEST 6 KNOTS SHIFTING TO THE
SOUTHWEST 8 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....FAIR (39664 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 AND THUNDERSTORMS.
LOWS 52 TO 62. HIGHS 70 TO 80. LIGHT WINDS. MINIMUM HUMIDITY
44 TO 54 PCT.
SATURDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 51 TO 61. HIGHS 73 TO 83. LIGHT WINDS.
MINIMUM HUMIDITY 36 TO 46 PCT.
SUNDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 51 TO 61. HIGHS 75 TO 85. LIGHT WINDS.
MINIMUM HUMIDITY 26 TO 36 PCT.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 52 TO 62. HIGHS 77 TO 87.
TUESDAY
MOSTLY CLEAR. LOWS 53 TO 63. HIGHS 77 TO 87.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
AZZ154-172215-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
238 AM MST WED SEP 17 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (60-70 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........50 PCT.
* CHANCE OF THUNDER........50 PCT.
* MAX TEMPERATURE..........71 TO 81 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............44 TO 54 PCT.
24 HR TREND...........UP 3 TO 6 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............6300 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 7 TO 8 KNOTS.
* VENTILATION CATEGORY.....GOOD (47250 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........30 PCT.
* MIN TEMPERATURE..........56 TO 66 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............72 TO 82 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH SHIFTING TO THE
SOUTHEAST AFTER MIDNIGHT.
* 10000 FT MSL WIND........NORTH AROUND 5 MPH SHIFTING TO THE
SOUTHEAST AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT) THEN BECOMING
MOSTLY CLOUDY (60-70 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........40 PCT.
* MAX TEMPERATURE..........70 TO 80 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............46 TO 56 PCT.
24 HR TREND...........UP 2 TO 5 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST AROUND 10 MPH SHIFTING TO THE
WEST IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTHWEST 5 TO 10 MPH.
* MIXING HEIGHT............5801 FT AGL.
* TRANSPORT WINDS..........NORTH 6 KNOTS SHIFTING TO THE WEST 7
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....GOOD (40607 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 AND THUNDERSTORMS.
LOWS 55 TO 65. HIGHS 72 TO 82. LIGHT WINDS. MINIMUM HUMIDITY
46 TO 56 PCT.
SATURDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 55 TO 65. HIGHS 73 TO 83. LIGHT WINDS.
MINIMUM HUMIDITY 41 TO 51 PCT.
SUNDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 56 TO 66. HIGHS 75 TO 85. LIGHT WINDS.
MINIMUM HUMIDITY 32 TO 42 PCT.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 56 TO 66. HIGHS 76 TO 86.
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 67. HIGHS 77 TO 87.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
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