404
FNUS55 KTWC 051028
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
328 AM MST TUE MAY 5 2026
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
A PACIFIC STORM SYSTEM MOVING THROUGH THE REGION WILL BRING A
BAND OF RAIN THROUGH SOUTHEASTERN ARIZONA THIS MORNING WITH
PARTIAL CLEARING SKIES LATE THIS MORNING. ISOLATED TO SCATTERED
SHOWERS WITH POTENTIALLY A THUNDERSTORM THIS AFTERNOON MAINLY
FROM EASTERN PINAL THROUGH GRAHAM AND GREENLEE COUNTIES. GUSTY
SOUTHWESTERLY WINDS ARE EXPECTED TO INCREASE STARTING MID-
MORNING BECOMING 18-25 MPH WITH GUSTS UP TO 40 MPH THROUGH SANTA
CRUZ AND SOUTHERN COCHISE COUNTY, AND 15-20 MPH WITH GUSTS TO 35
MPH ELSEWHERE EAST OF CENTRAL PIMA/PINAL. COOLER TEMPERATURES
AND INCREASED MOISTURE WILL KEEP MINIMUM RELATIVE HUMIDITY ABOVE
25 PERCENT TODAY AND ABOVE 40 PERCENT IN THE CATALINAS,
PINALENOS, AND WHITE MOUNTAINS. A DRYING AND WARMING TREND IS
EXPECTED THROUGH THE SECOND HALF OF THE WEEK WITH GENERALLY
LIGHT WINDS WEDNESDAY ONWARDS.
AZZ150-052215-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
328 AM MST TUE MAY 5 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT) THEN BECOMING
PARTLY CLOUDY (25-35 PCT). SLIGHT CHANCE
OF SHOWERS.
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........69 TO 79 DEGS.
24 HR TREND...........DOWN 5 TO 9 DEGS.
* MIN HUMIDITY.............24 TO 34 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST 25 TO 30 MPH.
* MIXING HEIGHT............9369 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 16 TO 21 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (196749 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (30-40 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........46 TO 56 DEGS.
24 HR TREND...........DOWN 4 TO 8 DEGS.
* MAX HUMIDITY.............57 TO 67 PCT.
24 HR TREND...........DOWN 8 TO 12 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHWEST 10 TO 15 MPH.
WEDNESDAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........73 TO 83 DEGS.
24 HR TREND...........UP 3 TO 7 DEGS.
* MIN HUMIDITY.............14 TO 23 PCT.
24 HR TREND...........DOWN 7 TO 11 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........NORTHWEST 5 TO 10 MPH.
* MIXING HEIGHT............7750 FT AGL.
* TRANSPORT WINDS..........WEST 5 TO 9 KNOTS.
* VENTILATION CATEGORY.....GOOD (69750 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
THURSDAY
CLEAR. LOWS 51 TO 61. HIGHS 82 TO 92. LIGHT WINDS.
MINIMUM HUMIDITY 8 TO 14 PCT.
FRIDAY
CLEAR. LOWS 55 TO 65. HIGHS 90 TO 100. LIGHT WINDS.
MINIMUM HUMIDITY 7 TO 11 PCT.
SATURDAY
CLEAR. LOWS 60 TO 70. HIGHS 93 TO 103. SOUTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 6 TO 10 PCT.
SUNDAY
CLEAR. LOWS 61 TO 71. HIGHS 94 TO 104.
MONDAY
CLEAR. LOWS 62 TO 72. 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)
AZZ151-052215-
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-
328 AM MST TUE MAY 5 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT) THEN BECOMING
PARTLY CLOUDY (35-45 PCT). CHANCE OF
RAIN AND SLIGHT CHANCE OF THUNDERSTORMS.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........20 PCT.
* MAX TEMPERATURE..........65 TO 75 DEGS.
24 HR TREND...........DOWN 5 TO 9 DEGS.
* MIN HUMIDITY.............30 TO 40 PCT.
24 HR TREND...........UP 7 TO 11 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
* MIXING HEIGHT............7375 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 23 TO 29 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (213875 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (20-30 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........39 TO 49 DEGS.
24 HR TREND...........DOWN 7 TO 11 DEGS.
* MAX HUMIDITY.............64 TO 74 PCT.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 20 MPH BECOMING SOUTHWEST
AROUND 10 MPH AFTER MIDNIGHT.
* 10000 FT MSL WIND........SOUTHWEST AROUND 25 MPH BECOMING WEST
AROUND 15 MPH AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........68 TO 78 DEGS.
24 HR TREND...........UP 1 TO 4 DEGS.
* MIN HUMIDITY.............16 TO 26 PCT.
24 HR TREND...........DOWN 9 TO 13 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........WEST AROUND 15 MPH DECREASING TO AROUND
5 MPH IN THE AFTERNOON.
* MIXING HEIGHT............8637 FT AGL.
* TRANSPORT WINDS..........NORTHWEST 7 TO 11 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (95007 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
THURSDAY
CLEAR. LOWS 44 TO 54. HIGHS 75 TO 85. LIGHT WINDS.
MINIMUM HUMIDITY 10 TO 18 PCT.
FRIDAY
CLEAR. LOWS 49 TO 59. HIGHS 82 TO 92. LIGHT WINDS.
MINIMUM HUMIDITY 8 TO 15 PCT.
SATURDAY
CLEAR. LOWS 54 TO 64. HIGHS 86 TO 96. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 12 PCT.
SUNDAY
CLEAR. LOWS 55 TO 65. HIGHS 87 TO 97.
MONDAY
CLEAR. LOWS 56 TO 66. 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)
AZZ152-052215-
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-
328 AM MST TUE MAY 5 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (60-70 PCT) THEN BECOMING
PARTLY CLOUDY (45-55 PCT). CHANCE OF
SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS.
* CHANCE OF PRECIP.........50 PCT.
* CHANCE OF THUNDER........20 PCT.
* MAX TEMPERATURE..........66 TO 76 DEGS.
24 HR TREND...........DOWN 5 TO 9 DEGS.
* MIN HUMIDITY.............33 TO 43 PCT.
24 HR TREND...........UP 8 TO 12 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
* MIXING HEIGHT............9681 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 22 TO 30 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (290430 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (30-40 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........40 TO 50 DEGS.
24 HR TREND...........DOWN 7 TO 11 DEGS.
* MAX HUMIDITY.............62 TO 72 PCT.
24 HR TREND...........DOWN 8 TO 12 PCT.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 20 MPH DECREASING TO AROUND
10 MPH AFTER MIDNIGHT.
* 10000 FT MSL WIND........SOUTHWEST 25 TO 30 MPH.
WEDNESDAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........68 TO 78 DEGS.
24 HR TREND...........UP 1 DEG.
* MIN HUMIDITY.............15 TO 25 PCT.
24 HR TREND...........DOWN 10 TO 14 PCT.
* WIND (20 FT/10-MIN AVG)..WEST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST AROUND 20 MPH DECREASING TO AROUND
10 MPH IN THE AFTERNOON.
* MIXING HEIGHT............8370 FT AGL.
* TRANSPORT WINDS..........WEST 11 TO 16 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (133920 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
THURSDAY
MOSTLY CLEAR. LOWS 43 TO 53. HIGHS 74 TO 84. LIGHT
WINDS. MINIMUM HUMIDITY 8 TO 17 PCT.
FRIDAY
CLEAR. LOWS 47 TO 57. HIGHS 81 TO 91. LIGHT WINDS.
MINIMUM HUMIDITY 7 TO 14 PCT.
SATURDAY
CLEAR. LOWS 52 TO 62. HIGHS 85 TO 95. WEST WIND
AROUND 20 MPH. MINIMUM HUMIDITY 6 TO 12 PCT.
SUNDAY
CLEAR. LOWS 54 TO 64. HIGHS 86 TO 96.
MONDAY
CLEAR. LOWS 55 TO 65. HIGHS 88 TO 98.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
AZZ153-052215-
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-
328 AM MST TUE MAY 5 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (70-80 PCT). RAIN LIKELY
AND SLIGHT CHANCE OF THUNDERSTORMS.
* CHANCE OF PRECIP.........60 PCT.
* CHANCE OF THUNDER........20 PCT.
* MAX TEMPERATURE..........54 TO 64 DEGS.
24 HR TREND...........DOWN 5 TO 9 DEGS.
* MIN HUMIDITY.............43 TO 53 PCT.
24 HR TREND...........UP 19 TO 23 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHWEST 25 TO 30 MPH.
* MIXING HEIGHT............6248 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 15 KNOTS INCREASING TO 25
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (156200 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..........33 TO 43 DEGS.
24 HR TREND...........DOWN 5 TO 9 DEGS.
* MAX HUMIDITY.............69 TO 79 PCT.
24 HR TREND...........DOWN 14 TO 18 PCT.
* WIND (20 FT/10-MIN AVG)..WEST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST 25 TO 30 MPH.
WEDNESDAY
* SKY/WEATHER..............MOSTLY SUNNY (15-25 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........58 TO 68 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MIN HUMIDITY.............18 TO 28 PCT.
24 HR TREND...........DOWN 20 TO 24 PCT.
* WIND (20 FT/10-MIN AVG)..WEST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST AROUND 20 MPH BECOMING NORTHWEST
AROUND 10 MPH IN THE AFTERNOON.
* MIXING HEIGHT............7639 FT AGL.
* TRANSPORT WINDS..........WEST 14 TO 18 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (137502 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
THURSDAY
MOSTLY CLEAR. LOWS 36 TO 46. HIGHS 65 TO 75. LIGHT
WINDS. MINIMUM HUMIDITY 11 TO 17 PCT.
FRIDAY
MOSTLY CLEAR. LOWS 40 TO 50. HIGHS 73 TO 83. LIGHT
WINDS. MINIMUM HUMIDITY 9 TO 14 PCT.
SATURDAY
CLEAR. LOWS 46 TO 56. HIGHS 75 TO 85. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 8 TO 14 PCT.
SUNDAY
MOSTLY CLEAR. LOWS 47 TO 57. HIGHS 76 TO 86.
MONDAY
CLEAR. LOWS 48 TO 58. HIGHS 78 TO 88.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
AZZ154-052215-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
328 AM MST TUE MAY 5 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT) THEN BECOMING
PARTLY CLOUDY (30-40 PCT). CHANCE OF
SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS.
* CHANCE OF PRECIP.........50 PCT.
* CHANCE OF THUNDER........20 PCT.
* MAX TEMPERATURE..........56 TO 66 DEGS.
24 HR TREND...........DOWN 5 TO 9 DEGS.
* MIN HUMIDITY.............38 TO 48 PCT.
24 HR TREND...........UP 6 TO 10 PCT.
* WIND (20 FT/10-MIN AVG)..BREEZY. SOUTHWEST 15 TO 25 MPH.
* 10000 FT MSL WIND........SOUTHWEST 35 TO 40 MPH.
* MIXING HEIGHT............9533 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 25 TO 32 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (271690 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (25-35 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........35 TO 45 DEGS.
24 HR TREND...........DOWN 8 TO 12 DEGS.
* MAX HUMIDITY.............64 TO 74 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..WEST 15 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST 25 TO 30 MPH.
WEDNESDAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........58 TO 68 DEGS.
24 HR TREND...........UP 1 DEG.
* MIN HUMIDITY.............19 TO 29 PCT.
24 HR TREND...........DOWN 11 TO 15 PCT.
* WIND (20 FT/10-MIN AVG)..WEST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST AROUND 15 MPH DECREASING TO AROUND
5 MPH IN THE AFTERNOON.
* MIXING HEIGHT............9979 FT AGL.
* TRANSPORT WINDS..........WEST 11 TO 15 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (129727 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
THURSDAY
MOSTLY CLEAR. LOWS 41 TO 51. HIGHS 64 TO 74. LIGHT
WINDS. MINIMUM HUMIDITY 12 TO 22 PCT.
FRIDAY
CLEAR. LOWS 45 TO 55. HIGHS 71 TO 81. LIGHT WINDS.
MINIMUM HUMIDITY 9 TO 17 PCT.
SATURDAY
CLEAR. LOWS 50 TO 60. HIGHS 76 TO 86. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 8 TO 15 PCT.
SUNDAY
CLEAR. LOWS 51 TO 61. HIGHS 76 TO 86.
MONDAY
CLEAR. LOWS 53 TO 63. HIGHS 78 TO 88.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
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