319
FNUS55 KTWC 210942
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
242 AM MST SAT MAR 21 2026
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
A UNSEASONABLY STRONG RIDGE OF HIGH PRESSURE WILL
RESULT IN RECORD SETTING HIGH TEMPERATURES AND VERY DRY CONDITIONS
THROUGH THIS WEEKEND. SIGNIFICANT HEAT IS FORECAST THROUGH SUNDAY
WITH HIGH TEMPERATURES PUSHING 20 TO 25 DEGREE ABOVE NORMAL.
WINDS THROUGH SATURDAY WILL REMAIN BELOW 10 MPH WITH A FEW
AFTERNOON GUSTS AROUND 20 MPH. BREEZIER CONDITIONS RETURN ON BOTH
SUNDAY AND MONDAY AS THE HIGH PRESSURE BEGINS TO WEAKEN. MINIMUM
RHS 5 TO 15 PERCENT.
AZZ150-212200-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
242 AM MST SAT MAR 21 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........96 TO 106 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............5 TO 8 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTHWEST 10 TO 15 MPH.
* MIXING HEIGHT............8950 FT AGL.
* TRANSPORT WINDS..........EAST 6 KNOTS SHIFTING TO THE WEST IN THE
AFTERNOON.
* VENTILATION CATEGORY.....VERY GOOD (98450 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........61 TO 71 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MAX HUMIDITY.............18 TO 28 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
* 10000 FT MSL WIND........SOUTHWEST 15 TO 20 MPH.
SUNDAY
* SKY/WEATHER..............MOSTLY SUNNY (20-30 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........93 TO 103 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............6 TO 11 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING SOUTHWEST AROUND 15
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
* MIXING HEIGHT............13595 FT AGL.
* TRANSPORT WINDS..........SOUTH 8 KNOTS SHIFTING TO THE SOUTHWEST
16 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (217520 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
MOSTLY CLEAR. LOWS 57 TO 67. HIGHS 89 TO 99. LIGHT
WINDS. MINIMUM HUMIDITY 9 TO 19 PCT.
TUESDAY
CLEAR. LOWS 57 TO 67. HIGHS 91 TO 101. LIGHT WINDS.
MINIMUM HUMIDITY 8 TO 18 PCT.
WEDNESDAY
CLEAR. LOWS 58 TO 68. HIGHS 93 TO 103. LIGHT WINDS.
MINIMUM HUMIDITY 7 TO 12 PCT.
THURSDAY
CLEAR. LOWS 59 TO 69. HIGHS 94 TO 104.
FRIDAY
MOSTLY CLEAR. LOWS 60 TO 70. HIGHS 93 TO 103.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
AZZ151-212200-
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-
242 AM MST SAT MAR 21 2026
TODAY
* SKY/WEATHER..............SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........90 TO 100 DEGS.
24 HR TREND...........UP 1 DEG.
* MIN HUMIDITY.............5 TO 10 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTHWEST 5 TO 10 MPH.
* MIXING HEIGHT............11679 FT AGL.
* TRANSPORT WINDS..........NORTH 8 KNOTS SHIFTING TO THE WEST 12
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (140148 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (10-20 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........55 TO 65 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............19 TO 29 PCT.
24 HR TREND...........UP 3 TO 6 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
* 10000 FT MSL WIND........WEST 15 TO 20 MPH.
SUNDAY
* SKY/WEATHER..............MOSTLY SUNNY (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........87 TO 97 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MIN HUMIDITY.............6 TO 12 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING WEST AROUND 15 MPH
IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
* MIXING HEIGHT............10550 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 11 TO 16 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (168800 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
MOSTLY CLEAR. LOWS 53 TO 63. HIGHS 84 TO 94. LIGHT
WINDS. MINIMUM HUMIDITY 7 TO 12 PCT.
TUESDAY
CLEAR. LOWS 52 TO 62. HIGHS 86 TO 96. LIGHT WINDS.
MINIMUM HUMIDITY 8 TO 13 PCT.
WEDNESDAY
CLEAR. LOWS 53 TO 63. HIGHS 88 TO 98. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 12 PCT.
THURSDAY
CLEAR. LOWS 54 TO 64. HIGHS 88 TO 98.
FRIDAY
MOSTLY CLEAR. LOWS 55 TO 65. HIGHS 87 TO 97.
NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION
(3500 MSL)
AZZ152-212200-
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-
242 AM MST SAT MAR 21 2026
TODAY
* SKY/WEATHER..............SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........89 TO 99 DEGS.
24 HR TREND...........UP 1 TO 4 DEGS.
* MIN HUMIDITY.............6 TO 11 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* 10000 FT MSL WIND........WEST 5 TO 10 MPH.
* MIXING HEIGHT............10859 FT AGL.
* TRANSPORT WINDS..........NORTH 7 KNOTS SHIFTING TO THE WEST IN
THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (130308 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (10-20 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........53 TO 63 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MAX HUMIDITY.............19 TO 29 PCT.
24 HR TREND...........UP 3 TO 6 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST 10 TO 15 MPH.
SUNDAY
* SKY/WEATHER..............MOSTLY SUNNY (15-25 PCT) THEN BECOMING
PARTLY CLOUDY (20-30 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........87 TO 97 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............6 TO 13 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH AROUND 10 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* 10000 FT MSL WIND........WEST 20 TO 25 MPH.
* MIXING HEIGHT............13162 FT AGL.
* TRANSPORT WINDS..........WEST 9 TO 16 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (210592 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
MOSTLY CLEAR. LOWS 52 TO 62. HIGHS 84 TO 94. LIGHT
WINDS. MINIMUM HUMIDITY 7 TO 12 PCT.
TUESDAY
CLEAR. LOWS 51 TO 61. HIGHS 85 TO 95. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 12 PCT.
WEDNESDAY
CLEAR. LOWS 52 TO 62. HIGHS 87 TO 97. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 6 TO 13 PCT.
THURSDAY
CLEAR. LOWS 53 TO 63. HIGHS 87 TO 97.
FRIDAY
MOSTLY CLEAR. LOWS 54 TO 64. HIGHS 85 TO 95.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
AZZ153-212200-
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-
242 AM MST SAT MAR 21 2026
TODAY
* SKY/WEATHER..............SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........80 TO 90 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............6 TO 10 PCT.
24 HR TREND...........UP 2 TO 5 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHEAST AROUND 10 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* 10000 FT MSL WIND........LIGHT WINDS BECOMING WEST AROUND 10 MPH
IN THE AFTERNOON.
* MIXING HEIGHT............9764 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 9 KNOTS SHIFTING TO THE
SOUTHWEST 13 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (126932 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (10-20 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........49 TO 59 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MAX HUMIDITY.............18 TO 28 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST 15 TO 20 MPH.
SUNDAY
* SKY/WEATHER..............MOSTLY SUNNY (15-25 PCT) THEN BECOMING
PARTLY CLOUDY (25-35 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........76 TO 86 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MIN HUMIDITY.............7 TO 12 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..NORTH AROUND 10 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* 10000 FT MSL WIND........WEST 20 TO 25 MPH.
* MIXING HEIGHT............9681 FT AGL.
* TRANSPORT WINDS..........NORTH 14 KNOTS SHIFTING TO THE WEST 18
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (174258 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
MOSTLY CLEAR. LOWS 47 TO 57. HIGHS 73 TO 83. NORTHWEST
WIND AROUND 15 MPH. MINIMUM HUMIDITY 8 TO 12 PCT.
TUESDAY
CLEAR. LOWS 46 TO 56. HIGHS 76 TO 86. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 8 TO 13 PCT.
WEDNESDAY
CLEAR. LOWS 48 TO 58. HIGHS 79 TO 89. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 8 TO 13 PCT.
THURSDAY
CLEAR. LOWS 48 TO 58. HIGHS 78 TO 88.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 58. HIGHS 75 TO 85.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
AZZ154-212200-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
242 AM MST SAT MAR 21 2026
TODAY
* SKY/WEATHER..............SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........80 TO 90 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............6 TO 11 PCT.
24 HR TREND...........UP 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..NORTH AROUND 10 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* 10000 FT MSL WIND........WEST 5 TO 10 MPH.
* MIXING HEIGHT............12491 FT AGL.
* TRANSPORT WINDS..........NORTH 7 KNOTS SHIFTING TO THE WEST IN
THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (149892 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........55 TO 65 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MAX HUMIDITY.............14 TO 24 PCT.
24 HR TREND...........UP 2 TO 5 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST 10 TO 15 MPH.
SUNDAY
* SKY/WEATHER..............MOSTLY SUNNY (20-30 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........77 TO 87 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............7 TO 13 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..WEST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST 15 TO 20 MPH.
* MIXING HEIGHT............12999 FT AGL.
* TRANSPORT WINDS..........WEST 11 TO 16 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (175486 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
MOSTLY CLEAR. LOWS 52 TO 62. HIGHS 75 TO 85. SOUTHWEST
WIND AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 13 PCT.
TUESDAY
CLEAR. LOWS 51 TO 61. HIGHS 76 TO 86. WEST WIND AROUND
15 MPH. MINIMUM HUMIDITY 8 TO 15 PCT.
WEDNESDAY
CLEAR. LOWS 52 TO 62. HIGHS 78 TO 88. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 14 PCT.
THURSDAY
CLEAR. LOWS 53 TO 63. HIGHS 78 TO 88.
FRIDAY
MOSTLY CLEAR. LOWS 54 TO 64. HIGHS 76 TO 86.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
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