403
FNUS55 KTWC 310938
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
238 AM MST SAT MAY 31 2025
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
A DRY THUNDERSTORM THREAT EXISTS TODAY SOUTH AND
EAST OF TUCSON MAINLY OVER THE HIGHER TERRAIN. MINIMUM HUMIDITY
VALUES WILL BE 12 TO 22 PERCENT. TROPICAL MOISTURE THEN BEGINS TO
MOVE IN WHICH WILL LEAD TO WIDESPREAD SHOWERS AND THUNDERSTORMS
SUNDAY INTO MONDAY. RAIN COULD BE HEAVY AT TIMES LEADING TO
POSSIBLE DEBRIS FLOWS OVER NEW AREA BURN SCARS. OVERALL WINDS
REMAIN LIGHT BUT GUSTY AND ERRATIC WINDS WOULD OCCUR WITH ANY
THUNDERSTORM ACTIVITY. ANOTHER WEATHER SYSTEM MOVES THROUGH
TUESDAY WITH A SLIGHT CHANCE FOR PRECIP EAST OF TUCSON ALONG WITH
BREEZY WINDS. THEREAFTER EXPECT DRY AND WARMING CONDITIONS.
AZZ150-312215-
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 SAT MAY 31 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT) THEN BECOMING
PARTLY CLOUDY (40-50 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........90 TO 100 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............10 TO 20 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........EAST 15 TO 20 MPH.
* MIXING HEIGHT............12600 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 9 KNOTS SHIFTING TO THE NORTH
12 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (151200 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (45-55 PCT). SLIGHT CHANCE
OF SHOWERS.
* CHANCE OF PRECIP.........20 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........65 TO 75 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MAX HUMIDITY.............42 TO 52 PCT.
24 HR TREND...........UP 15 TO 19 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH SHIFTING TO THE
SOUTH AFTER MIDNIGHT.
* 10000 FT MSL WIND........SOUTHEAST 10 TO 15 MPH.
SUNDAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS AND THUNDERSTORMS.
* CHANCE OF PRECIP.........80 PCT.
* CHANCE OF THUNDER........50 PCT.
* MAX TEMPERATURE..........80 TO 90 DEGS.
24 HR TREND...........DOWN 8 TO 12 DEGS.
* MIN HUMIDITY.............34 TO 44 PCT.
24 HR TREND...........UP 23 TO 27 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHEAST AROUND 15 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* MIXING HEIGHT............7201 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 9 TO 11 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (79211 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS 61 TO 71. HIGHS 83 TO 93. LIGHT WINDS.
MINIMUM HUMIDITY 22 TO 32 PCT.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 61 TO
71. HIGHS 86 TO 96. LIGHT WINDS. MINIMUM HUMIDITY 15 TO 25 PCT.
WEDNESDAY
CLEAR. LOWS 60 TO 70. HIGHS 87 TO 97. LIGHT WINDS.
MINIMUM HUMIDITY 10 TO 18 PCT.
THURSDAY
CLEAR. LOWS 61 TO 71. HIGHS 91 TO 101.
FRIDAY
CLEAR. LOWS 63 TO 73. HIGHS 94 TO 104.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
AZZ151-312215-
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 SAT MAY 31 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT) THEN BECOMING
PARTLY CLOUDY (45-55 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........87 TO 97 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............11 TO 21 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..NORTH AROUND 10 MPH.
* 10000 FT MSL WIND........EAST 15 TO 20 MPH.
* MIXING HEIGHT............12226 FT AGL.
* TRANSPORT WINDS..........NORTHWEST 14 KNOTS SHIFTING TO THE EAST
15 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (183390 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT). SLIGHT CHANCE
OF SHOWERS.
* CHANCE OF PRECIP.........20 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........59 TO 69 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MAX HUMIDITY.............42 TO 52 PCT.
24 HR TREND...........UP 8 TO 12 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHEAST 5 TO 10 MPH.
SUNDAY
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT) THEN BECOMING
MOSTLY CLOUDY (65-75 PCT). CHANCE OF
SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS.
* CHANCE OF PRECIP.........60 PCT.
* CHANCE OF THUNDER........20 PCT.
* MAX TEMPERATURE..........80 TO 90 DEGS.
24 HR TREND...........DOWN 6 TO 10 DEGS.
* MIN HUMIDITY.............28 TO 38 PCT.
24 HR TREND...........UP 16 TO 20 PCT.
* WIND (20 FT/10-MIN AVG)..WEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTH 10 TO 15 MPH.
* MIXING HEIGHT............3539 FT AGL.
* TRANSPORT WINDS..........WEST 10 TO 15 KNOTS.
* VENTILATION CATEGORY.....GOOD (53085 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS
57 TO 67. HIGHS 77 TO 87. SOUTHWEST WIND AROUND 15 MPH. MINIMUM
HUMIDITY 27 TO 37 PCT.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 55 TO
65. HIGHS 81 TO 91. SOUTHWEST WIND AROUND 15 MPH. MINIMUM
HUMIDITY 19 TO 29 PCT.
WEDNESDAY
CLEAR. LOWS 54 TO 64. HIGHS 81 TO 91. LIGHT WINDS.
MINIMUM HUMIDITY 11 TO 20 PCT.
THURSDAY
CLEAR. LOWS 55 TO 65. HIGHS 86 TO 96.
FRIDAY
CLEAR. LOWS 57 TO 67. HIGHS 90 TO 100.
NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION
(3500 MSL)
AZZ152-312215-
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 SAT MAY 31 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (45-55 PCT) THEN BECOMING
PARTLY CLOUDY (40-50 PCT). SLIGHT CHANCE
OF DRY THUNDERSTORMS.
* CHANCE OF PRECIP.........15 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........88 TO 98 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............9 TO 18 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTHEAST 10 TO 15 MPH.
* MIXING HEIGHT............13469 FT AGL.
* TRANSPORT WINDS..........NORTHWEST 10 KNOTS SHIFTING TO THE
SOUTHEAST 13 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (175097 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........60 TO 70 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............38 TO 48 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTH 5 TO 10 MPH.
SUNDAY
* SKY/WEATHER..............PARTLY CLOUDY (25-35 PCT) THEN BECOMING
MOSTLY CLOUDY (60-70 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........60 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........85 TO 95 DEGS.
24 HR TREND...........DOWN 3 TO 6 DEGS.
* MIN HUMIDITY.............19 TO 29 PCT.
24 HR TREND...........UP 6 TO 10 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* MIXING HEIGHT............9562 FT AGL.
* TRANSPORT WINDS..........WEST 9 TO 17 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (162554 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS
58 TO 68. HIGHS 78 TO 88. WEST WIND AROUND 15 MPH. MINIMUM
HUMIDITY 24 TO 34 PCT.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 55 TO 65. HIGHS 82 TO 92. WEST WIND AROUND
15 MPH. MINIMUM HUMIDITY 17 TO 27 PCT.
WEDNESDAY
MOSTLY CLEAR. LOWS 55 TO 65. HIGHS 82 TO 92. LIGHT
WINDS. MINIMUM HUMIDITY 11 TO 19 PCT.
THURSDAY
CLEAR. LOWS 55 TO 65. HIGHS 87 TO 97.
FRIDAY
CLEAR. LOWS 57 TO 67. HIGHS 90 TO 100.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
AZZ153-312215-
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 SAT MAY 31 2025
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........79 TO 89 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............12 TO 19 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING SOUTH AROUND 10 MPH
IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTHEAST 5 TO 10 MPH.
* MIXING HEIGHT............13842 FT AGL.
* TRANSPORT WINDS..........NORTH 8 KNOTS SHIFTING TO THE SOUTH 10
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (138420 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........55 TO 65 DEGS.
24 HR TREND...........UP 1 DEG.
* MAX HUMIDITY.............36 TO 46 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
* 10000 FT MSL WIND........SOUTH 10 TO 15 MPH.
SUNDAY
* SKY/WEATHER..............MOSTLY SUNNY (15-25 PCT) THEN BECOMING
MOSTLY CLOUDY (50-60 PCT). CHANCE OF
SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS.
* CHANCE OF PRECIP.........50 PCT.
* CHANCE OF THUNDER........20 PCT.
* MAX TEMPERATURE..........78 TO 88 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............16 TO 26 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTH 5 TO 10 MPH.
* MIXING HEIGHT............9045 FT AGL.
* TRANSPORT WINDS..........WEST 11 KNOTS SHIFTING TO THE SOUTH 17
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (153765 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
NOT AS WARM. SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS. LOWS 51 TO 61. HIGHS 67 TO 77. WEST WIND AROUND
15 MPH. MINIMUM HUMIDITY 28 TO 38 PCT.
TUESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS 48 TO 58. HIGHS 71 TO 81. WEST WIND AROUND
15 MPH. MINIMUM HUMIDITY 20 TO 30 PCT.
WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 48 TO
58. HIGHS 72 TO 82. LIGHT WINDS. MINIMUM HUMIDITY 14 TO 24 PCT.
THURSDAY
CLEAR. LOWS 49 TO 59. HIGHS 76 TO 86.
FRIDAY
CLEAR. LOWS 51 TO 61. HIGHS 79 TO 89.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
AZZ154-312215-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
238 AM MST SAT MAY 31 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT) THEN BECOMING
PARTLY CLOUDY (45-55 PCT). SLIGHT CHANCE
OF DRY THUNDERSTORMS.
* CHANCE OF PRECIP.........15 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........77 TO 87 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............14 TO 24 PCT.
24 HR TREND...........UP 5 TO 9 PCT.
* WIND (20 FT/10-MIN AVG)..NORTH AROUND 10 MPH SHIFTING TO THE EAST
IN THE AFTERNOON.
* 10000 FT MSL WIND........EAST 10 TO 15 MPH.
* MIXING HEIGHT............13916 FT AGL.
* TRANSPORT WINDS..........NORTH 14 KNOTS SHIFTING TO THE SOUTHEAST
15 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (208740 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........56 TO 66 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............41 TO 51 PCT.
24 HR TREND...........UP 11 TO 15 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHEAST 5 TO 10 MPH.
SUNDAY
* SKY/WEATHER..............PARTLY CLOUDY (30-40 PCT) THEN BECOMING
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..........73 TO 83 DEGS.
24 HR TREND...........DOWN 3 TO 7 DEGS.
* MIN HUMIDITY.............26 TO 36 PCT.
24 HR TREND...........UP 11 TO 15 PCT.
* WIND (20 FT/10-MIN AVG)..WEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* MIXING HEIGHT............10846 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 9 TO 14 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (124729 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS
53 TO 63. HIGHS 67 TO 77. SOUTHWEST WIND AROUND 15 MPH. MINIMUM
HUMIDITY 32 TO 42 PCT.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 52 TO 62. HIGHS 71 TO 81. SOUTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 23 TO 33 PCT.
WEDNESDAY
MOSTLY CLEAR. LOWS 51 TO 61. HIGHS 72 TO 82. LIGHT
WINDS. MINIMUM HUMIDITY 14 TO 24 PCT.
THURSDAY
CLEAR. LOWS 52 TO 62. HIGHS 76 TO 86.
FRIDAY
MOSTLY CLEAR. LOWS 55 TO 65. HIGHS 79 TO 89.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
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