388
FNUS55 KTWC 270744
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
1244 AM MST WED MAY 27 2026
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
WARM WITH DRY CONDITIONS ACROSS SOUTHEAST
ARIZONA INTO EARLY NEXT WEEK. AN ABNORMALLY COOL UPPER-LOW
RESIDING ACROSS CENTRAL CALIFORNIA WILL RESULT IN BELOW NORMAL
TEMPERATURES ACROSS SOUTHEAST ARIZONA TODAY AND THURSDAY. THIS
SYSTEM WILL ALSO BRING BREEZY TO LOCALLY WINDY 20-FOOT WINDS
FROM THE SOUTHWEST 15 TO 20 MPH WITH GUSTS TO 35 MPH. THIS WILL
RESULT IN ELEVATED/NEAR-CRITICAL FIRE WEATHER CONDITIONS THE
NEXT FEW DAYS, ESPECIALLY ACROSS THE EASTERN PORTIONS OF FIRE
WEATHER ZONE 150 AND ZONE 151. MIN RH VALUES WILL BE IN THE 7-18
PERCENT RANGE IN THE VALLEYS AND IN THE 14-20 PERCENT RANGE IN
THE MOUNTAINS THROUGH NEXT WEEK.
AZZ150-272215-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
1244 AM MST WED MAY 27 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........82 TO 92 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............16 TO 26 PCT WEST. 10 TO 15 PERCENT EAST.
24 HR TREND...........UP 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH TO SOUTHWEST 15 TO 20 MPH WITH
GUSTS TO 30-35 MPH.
* 10000 FT MSL WIND........SOUTHWEST 25 TO 30 MPH.
* MIXING HEIGHT............8956 FT AGL.
* TRANSPORT WINDS..........SOUTH 21 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (188076 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........53 TO 63 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MAX HUMIDITY.............44 TO 54 PCT.
24 HR TREND...........UP 11 TO 15 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 20 MPH BECOMING SOUTH
AROUND 10 MPH AFTER MIDNIGHT.
* 10000 FT MSL WIND........SOUTH 30 TO 35 MPH.
THURSDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........82 TO 92 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............15 TO 25 PCT WEST. 9 TO 14 PERCENT EAST.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH TO SOUTHWEST 15 TO 20 MPH WITH
GUSTS TO 30-35 MPH.
* 10000 FT MSL WIND........SOUTH 25 TO 30 MPH.
* MIXING HEIGHT............10446 FT AGL.
* TRANSPORT WINDS..........SOUTH 16 TO 21 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (219366 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
CLEAR. LOWS 52 TO 62. HIGHS 82 TO 92. SOUTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 12 TO 22 PCT.
SATURDAY
CLEAR. LOWS 54 TO 64. HIGHS 85 TO 95. LIGHT WINDS.
MINIMUM HUMIDITY 9 TO 16 PCT.
SUNDAY
CLEAR. LOWS 58 TO 68. HIGHS 91 TO 101. LIGHT WINDS.
MINIMUM HUMIDITY 7 TO 12 PCT.
MONDAY
CLEAR. LOWS 61 TO 71. HIGHS 95 TO 105.
TUESDAY
MOSTLY CLEAR. LOWS 63 TO 73. HIGHS 96 TO 106.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
AZZ151-272215-
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-
1244 AM MST WED MAY 27 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........81 TO 91 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............9 TO 19 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 30 MPH.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
* MIXING HEIGHT............6178 FT AGL.
* TRANSPORT WINDS..........SOUTH 20 TO 21 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (129738 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (25-35 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........50 TO 60 DEGS.
24 HR TREND...........UP 1 TO 4 DEGS.
* MAX HUMIDITY.............40 TO 50 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH 15 TO 20 MPH.
* 10000 FT MSL WIND........SOUTH 25 TO 30 MPH.
THURSDAY
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........81 TO 91 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............8 TO 18 PCT.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 30 MPH.
* 10000 FT MSL WIND........SOUTH 20 TO 25 MPH.
* MIXING HEIGHT............7769 FT AGL.
* TRANSPORT WINDS..........SOUTH 19 TO 20 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (155380 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
CLEAR. LOWS 50 TO 60. HIGHS 80 TO 90. SOUTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 9 TO 18 PCT.
SATURDAY
CLEAR. LOWS 49 TO 59. HIGHS 82 TO 92. SOUTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 9 TO 16 PCT.
SUNDAY
CLEAR. LOWS 52 TO 62. HIGHS 86 TO 96. LIGHT WINDS.
MINIMUM HUMIDITY 8 TO 14 PCT.
MONDAY
MOSTLY CLEAR. LOWS 55 TO 65. HIGHS 89 TO 99.
TUESDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 58 TO 68. 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)
AZZ152-272215-
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-
1244 AM MST WED MAY 27 2026
TODAY
* SKY/WEATHER..............SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........82 TO 92 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............6 TO 13 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 25-30 MPH.
* 10000 FT MSL WIND........SOUTH 20 TO 25 MPH.
* MIXING HEIGHT............8029 FT AGL.
* TRANSPORT WINDS..........SOUTH 17 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (136493 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (25-35 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........52 TO 62 DEGS.
24 HR TREND...........UP 1 TO 4 DEGS.
* MAX HUMIDITY.............33 TO 43 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTH AROUND 20 MPH INCREASING TO AROUND
30 MPH AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........83 TO 93 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............6 TO 12 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 25-30 MPH.
* 10000 FT MSL WIND........SOUTH 20 TO 25 MPH.
* MIXING HEIGHT............10080 FT AGL.
* TRANSPORT WINDS..........SOUTH 17 TO 20 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (201600 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
MOSTLY CLEAR. LOWS 52 TO 62. HIGHS 82 TO 92. SOUTHWEST
WIND AROUND 20 MPH. MINIMUM HUMIDITY 8 TO 16 PCT.
SATURDAY
CLEAR. LOWS 50 TO 60. HIGHS 82 TO 92. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 8 TO 14 PCT.
SUNDAY
CLEAR. LOWS 52 TO 62. HIGHS 86 TO 96. WEST WIND AROUND
15 MPH. MINIMUM HUMIDITY 7 TO 13 PCT.
MONDAY
MOSTLY CLEAR. LOWS 55 TO 65. HIGHS 89 TO 99.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 58 TO 68. HIGHS 89 TO 99.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
AZZ153-272215-
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-
1244 AM MST WED MAY 27 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........70 TO 80 DEGS.
24 HR TREND...........UP 1 TO 4 DEGS.
* MIN HUMIDITY.............7 TO 13 PCT.
24 HR TREND...........DOWN 5 TO 9 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 25-30 MPH.
* 10000 FT MSL WIND........SOUTH 20 TO 25 MPH.
* MIXING HEIGHT............8421 FT AGL.
* TRANSPORT WINDS..........SOUTH 19 TO 20 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (168420 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........46 TO 56 DEGS.
24 HR TREND...........UP 3 TO 6 DEGS.
* MAX HUMIDITY.............34 TO 44 PCT.
24 HR TREND...........DOWN 2 TO 5 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTH AROUND 20 MPH INCREASING TO AROUND
30 MPH AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........72 TO 82 DEGS.
24 HR TREND...........UP 1 DEG.
* MIN HUMIDITY.............8 TO 14 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 25-30 MPH.
* 10000 FT MSL WIND........SOUTH 25 TO 30 MPH.
* MIXING HEIGHT............10630 FT AGL.
* TRANSPORT WINDS..........SOUTH 20 TO 22 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (233860 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
CLEAR. LOWS 45 TO 55. HIGHS 70 TO 80. SOUTHWEST WIND
AROUND 20 MPH. MINIMUM HUMIDITY 9 TO 19 PCT.
SATURDAY
CLEAR. LOWS 44 TO 54. HIGHS 72 TO 82. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 8 TO 15 PCT.
SUNDAY
CLEAR. LOWS 45 TO 55. HIGHS 76 TO 86. LIGHT WINDS.
MINIMUM HUMIDITY 7 TO 12 PCT.
MONDAY
MOSTLY CLEAR. LOWS 48 TO 58. HIGHS 79 TO 89.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 52 TO 62. 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)
AZZ154-272215-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
1244 AM MST WED MAY 27 2026
TODAY
* SKY/WEATHER..............SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........72 TO 82 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............8 TO 17 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 25-30 MPH.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
* MIXING HEIGHT............9448 FT AGL.
* TRANSPORT WINDS..........SOUTH 18 TO 19 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (174788 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (25-35 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........48 TO 58 DEGS.
24 HR TREND...........UP 1 TO 4 DEGS.
* MAX HUMIDITY.............35 TO 45 PCT.
24 HR TREND...........UP 5 TO 9 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTH AROUND 20 MPH INCREASING TO AROUND
30 MPH AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........72 TO 82 DEGS.
24 HR TREND...........UP 1 DEG.
* MIN HUMIDITY.............8 TO 15 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 25-30 MPH.
* 10000 FT MSL WIND........SOUTH 20 TO 25 MPH.
* MIXING HEIGHT............10893 FT AGL.
* TRANSPORT WINDS..........SOUTH 18 TO 20 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (206967 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 58. HIGHS 71 TO 81. SOUTHWEST
WIND AROUND 20 MPH. MINIMUM HUMIDITY 10 TO 20 PCT.
SATURDAY
CLEAR. LOWS 46 TO 56. HIGHS 72 TO 82. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 10 TO 20 PCT.
SUNDAY
CLEAR. LOWS 48 TO 58. HIGHS 75 TO 85. WEST WIND AROUND
15 MPH. MINIMUM HUMIDITY 8 TO 16 PCT.
MONDAY
MOSTLY CLEAR. LOWS 52 TO 62. HIGHS 79 TO 89.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. 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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