493
FNUS55 KTWC 060918
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
218 AM MST WED MAY 6 2026
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
BELOW NORMAL TEMPERATURES AGAIN TODAY WITH FAR LIGHTER WINDS
THAN TUESDAY. WINDS THIS AFTERNOON WEST-NORTHWEST AND MAINLY
UNDER 12 MPH, OTHERWISE TERRAIN DRIVEN THIS MORNING AND TONIGHT.
MINIMUM RELATIVE HUMIDITIES MAINLY ABOVE 15 PERCENT ACROSS
DESERT LOCATIONS AND ABOVE 20 PERCENT IN THE MOUNTAINS. FURTHER
DRYING IS EXPECTED THROUGH THE WEEK AS TEMPERATURES HEAT UP AS
WELL. WINDS REMAIN GENERALLY LIGHT EACH DAY WITH MINIMUM
RELATIVE HUMIDITIES FALLING INTO THE SINGLE DIGITS AND BELOW 15
PERCENT IN THE MOUNTAINS BY THE WEEKEND.
AZZ150-062215-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
218 AM MST WED MAY 6 2026
TODAY
* SKY/WEATHER..............SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........73 TO 83 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 5 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* MIXING HEIGHT............6626 FT AGL.
* TRANSPORT WINDS..........NORTH 6 TO 7 KNOTS.
* VENTILATION CATEGORY.....GOOD (46382 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........50 TO 60 DEGS.
24 HR TREND...........UP 4 TO 8 DEGS.
* MAX HUMIDITY.............35 TO 45 PCT.
24 HR TREND...........DOWN 24 TO 28 PCT.
* WIND (20 FT/10-MIN AVG)..NORTH AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
* 10000 FT MSL WIND........EAST 10 TO 15 MPH.
THURSDAY
* SKY/WEATHER..............MOSTLY SUNNY (10-20 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........83 TO 93 DEGS.
24 HR TREND...........UP 8 TO 12 DEGS.
* MIN HUMIDITY.............9 TO 18 PCT.
24 HR TREND...........DOWN 5 TO 9 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........NORTHEAST 10 TO 15 MPH.
* MIXING HEIGHT............12940 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 8 TO 12 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (155280 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
CLEAR. LOWS 55 TO 65. HIGHS 89 TO 99. LIGHT WINDS.
MINIMUM HUMIDITY 8 TO 13 PCT.
SATURDAY
CLEAR. LOWS 59 TO 69. HIGHS 92 TO 102. LIGHT WINDS.
MINIMUM HUMIDITY 6 TO 11 PCT.
SUNDAY
CLEAR. LOWS 61 TO 71. HIGHS 94 TO 104. LIGHT WINDS.
MINIMUM HUMIDITY 6 TO 10 PCT.
MONDAY
CLEAR. LOWS 63 TO 73. HIGHS 98 TO 108.
TUESDAY
MOSTLY CLEAR. LOWS 66 TO 76. 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)
AZZ151-062215-
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-
218 AM MST WED MAY 6 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........67 TO 77 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MIN HUMIDITY.............18 TO 28 PCT.
24 HR TREND...........DOWN 10 TO 14 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........WEST 5 TO 10 MPH.
* MIXING HEIGHT............7597 FT AGL.
* TRANSPORT WINDS..........NORTH 6 KNOTS SHIFTING TO THE NORTHWEST
8 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....GOOD (60776 KNOT-FT).
TONIGHT
* SKY/WEATHER..............CLEAR (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........44 TO 54 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MAX HUMIDITY.............44 TO 54 PCT.
24 HR TREND...........DOWN 18 TO 22 PCT.
* WIND (20 FT/10-MIN AVG)..NORTH AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHEAST 10 TO 15 MPH.
THURSDAY
* SKY/WEATHER..............SUNNY (0-10 PCT) THEN BECOMING PARTLY
CLOUDY (25-35 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........75 TO 85 DEGS.
24 HR TREND...........UP 4 TO 8 DEGS.
* MIN HUMIDITY.............11 TO 21 PCT.
24 HR TREND...........DOWN 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHEAST AROUND 10 MPH.
* 10000 FT MSL WIND........EAST 10 TO 15 MPH.
* MIXING HEIGHT............12984 FT AGL.
* TRANSPORT WINDS..........EAST 11 TO 12 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (155808 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
CLEAR. LOWS 48 TO 58. HIGHS 81 TO 91. WEST WIND AROUND
15 MPH. MINIMUM HUMIDITY 8 TO 17 PCT.
SATURDAY
CLEAR. LOWS 53 TO 63. HIGHS 85 TO 95. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 15 PCT.
SUNDAY
CLEAR. LOWS 54 TO 64. HIGHS 87 TO 97. LIGHT WINDS.
MINIMUM HUMIDITY 6 TO 12 PCT.
MONDAY
MOSTLY CLEAR. LOWS 57 TO 67. HIGHS 90 TO 100.
TUESDAY
MOSTLY CLEAR. LOWS 59 TO 69. 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)
AZZ152-062215-
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-
218 AM MST WED MAY 6 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........67 TO 77 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............20 TO 30 PCT.
24 HR TREND...........DOWN 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST 10 TO 15 MPH.
* MIXING HEIGHT............6935 FT AGL.
* TRANSPORT WINDS..........WEST 9 TO 12 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (83220 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (10-20 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........43 TO 53 DEGS.
24 HR TREND...........UP 3 TO 6 DEGS.
* MAX HUMIDITY.............47 TO 57 PCT.
24 HR TREND...........DOWN 20 TO 24 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH.
* 10000 FT MSL WIND........WEST AROUND 10 MPH SHIFTING TO THE EAST
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER..............SUNNY (0-10 PCT) THEN BECOMING PARTLY
CLOUDY (30-40 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........74 TO 84 DEGS.
24 HR TREND...........UP 4 TO 8 DEGS.
* MIN HUMIDITY.............11 TO 21 PCT.
24 HR TREND...........DOWN 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST AROUND 10 MPH.
* 10000 FT MSL WIND........EAST AROUND 15 MPH DECREASING TO AROUND
5 MPH IN THE AFTERNOON.
* MIXING HEIGHT............12406 FT AGL.
* TRANSPORT WINDS..........EAST 12 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (148872 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
CLEAR. LOWS 47 TO 57. HIGHS 81 TO 91. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 8 TO 16 PCT.
SATURDAY
CLEAR. LOWS 52 TO 62. HIGHS 85 TO 95. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 14 PCT.
SUNDAY
CLEAR. LOWS 53 TO 63. HIGHS 86 TO 96. LIGHT WINDS.
MINIMUM HUMIDITY 6 TO 12 PCT.
MONDAY
CLEAR. LOWS 55 TO 65. HIGHS 88 TO 98.
TUESDAY
MOSTLY CLEAR. LOWS 58 TO 68. 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)
AZZ153-062215-
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-
218 AM MST WED MAY 6 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT) THEN BECOMING
PARTLY CLOUDY (25-35 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........59 TO 69 DEGS.
24 HR TREND...........UP 3 TO 6 DEGS.
* MIN HUMIDITY.............22 TO 32 PCT.
24 HR TREND...........DOWN 20 TO 24 PCT.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 10 MPH.
* 10000 FT MSL WIND........NORTHWEST AROUND 20 MPH DECREASING TO
AROUND 10 MPH IN THE AFTERNOON.
* MIXING HEIGHT............7707 FT AGL.
* TRANSPORT WINDS..........WEST 11 TO 13 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (100191 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (30-40 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........36 TO 46 DEGS.
24 HR TREND...........UP 3 TO 7 DEGS.
* MAX HUMIDITY.............48 TO 58 PCT.
24 HR TREND...........DOWN 22 TO 26 PCT.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 10 MPH SHIFTING TO THE NORTH
AFTER MIDNIGHT.
* 10000 FT MSL WIND........NORTH AROUND 15 MPH SHIFTING TO THE
NORTHEAST AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER..............MOSTLY SUNNY (0-10 PCT) THEN BECOMING
PARTLY CLOUDY (30-40 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........65 TO 75 DEGS.
24 HR TREND...........UP 5 TO 9 DEGS.
* MIN HUMIDITY.............11 TO 20 PCT.
24 HR TREND...........DOWN 8 TO 12 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHEAST AROUND 10 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* 10000 FT MSL WIND........EAST AROUND 10 MPH SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* MIXING HEIGHT............10526 FT AGL.
* TRANSPORT WINDS..........EAST 10 KNOTS SHIFTING TO THE SOUTHEAST
IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (105260 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
FRIDAY
MOSTLY CLEAR. LOWS 39 TO 49. HIGHS 73 TO 83. NORTHWEST
WIND AROUND 15 MPH. MINIMUM HUMIDITY 10 TO 16 PCT.
SATURDAY
MOSTLY CLEAR. LOWS 46 TO 56. HIGHS 75 TO 85.
NORTHWEST WIND AROUND 15 MPH. MINIMUM HUMIDITY 10 TO 15 PCT.
SUNDAY
MOSTLY CLEAR. LOWS 48 TO 58. HIGHS 77 TO 87. LIGHT
WINDS. MINIMUM HUMIDITY 9 TO 15 PCT.
MONDAY
CLEAR. LOWS 49 TO 59. HIGHS 79 TO 89.
TUESDAY
MOSTLY CLEAR. LOWS 52 TO 62. 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)
AZZ154-062215-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
218 AM MST WED MAY 6 2026
TODAY
* 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...........LITTLE CHANGE.
* MIN HUMIDITY.............25 TO 35 PCT.
24 HR TREND...........DOWN 11 TO 15 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH.
* 10000 FT MSL WIND........WEST AROUND 15 MPH DECREASING TO AROUND
5 MPH IN THE AFTERNOON.
* MIXING HEIGHT............9271 FT AGL.
* TRANSPORT WINDS..........NORTHWEST 7 TO 11 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (83439 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........41 TO 51 DEGS.
24 HR TREND...........UP 5 TO 9 DEGS.
* MAX HUMIDITY.............41 TO 51 PCT.
24 HR TREND...........DOWN 30 TO 34 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH SHIFTING TO THE
NORTHEAST AFTER MIDNIGHT.
* 10000 FT MSL WIND........SOUTHEAST 5 TO 10 MPH.
THURSDAY
* SKY/WEATHER..............SUNNY (0-10 PCT) THEN BECOMING PARTLY
CLOUDY (30-40 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........65 TO 75 DEGS.
24 HR TREND...........UP 4 TO 8 DEGS.
* MIN HUMIDITY.............15 TO 25 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH.
* 10000 FT MSL WIND........EAST 10 TO 15 MPH.
* MIXING HEIGHT............15750 FT AGL.
* TRANSPORT WINDS..........EAST 13 TO 14 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (212625 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. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 12 TO 22 PCT.
SATURDAY
CLEAR. LOWS 50 TO 60. HIGHS 76 TO 86. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 10 TO 20 PCT.
SUNDAY
CLEAR. LOWS 53 TO 63. HIGHS 78 TO 88. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 15 PCT.
MONDAY
MOSTLY CLEAR. LOWS 55 TO 65. HIGHS 80 TO 90.
TUESDAY
PARTLY CLOUDY. LOWS 57 TO 67. 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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