639
FNUS55 KTWC 190830
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
130 AM MST THU MAR 19 2026
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
A STRENGTHENING RIDGE OF HIGH PRESSURE WILL BE CENTERED OVER
SOUTHERN ARIZONA RESULTING IN PROGRESSIVELY HOTTER AND DRIER
CONDITIONS HEADING INTO THE WEEKEND. SIGNIFICANT HEAT IS FORECAST
TODAY THROUGH SUNDAY WITH HIGH TEMPERATURES PUSHING 20 TO 25
DEGREE ABOVE NORMAL. WINDS THROUGH THE REMAINDER OF THE WORK WEEK
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 AND FLATTEN OUT. MINIMUM RHS 5 TO
15 PERCENT.
AZZ150-192215-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
130 AM MST THU MAR 19 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........96 TO 106 DEGS.
24 HR TREND...........UP 3 TO 7 DEGS.
* MIN HUMIDITY.............5 TO 10 PCT.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* 10000 FT MSL WIND........EAST 5 TO 10 MPH.
* MIXING HEIGHT............8530 FT AGL.
* TRANSPORT WINDS..........EAST 7 TO 9 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (76770 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........61 TO 71 DEGS.
24 HR TREND...........UP 3 TO 6 DEGS.
* MAX HUMIDITY.............15 TO 25 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........EAST 10 TO 15 MPH.
FRIDAY
* SKY/WEATHER..............SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........98 TO 108 DEGS.
24 HR TREND...........UP 1 DEG.
* MIN HUMIDITY.............5 TO 9 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH SHIFTING TO THE NORTH
IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTH AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* MIXING HEIGHT............8882 FT AGL.
* TRANSPORT WINDS..........EAST 6 KNOTS SHIFTING TO THE NORTH 8
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....VERY GOOD (71056 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
SATURDAY
CLEAR. LOWS 62 TO 72. HIGHS 98 TO 108. LIGHT WINDS.
MINIMUM HUMIDITY 5 TO 8 PCT.
SUNDAY
MOSTLY CLEAR. LOWS 61 TO 71. HIGHS 94 TO 104. SOUTHWEST
WIND AROUND 15 MPH. MINIMUM HUMIDITY 5 TO 10 PCT.
MONDAY
MOSTLY CLEAR. LOWS 57 TO 67. HIGHS 91 TO 101. LIGHT
WINDS. MINIMUM HUMIDITY 7 TO 17 PCT.
TUESDAY
CLEAR. LOWS 57 TO 67. HIGHS 94 TO 104.
WEDNESDAY
CLEAR. LOWS 59 TO 69. 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)
AZZ151-192215-
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-
130 AM MST THU MAR 19 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........89 TO 99 DEGS.
24 HR TREND...........UP 3 TO 7 DEGS.
* MIN HUMIDITY.............6 TO 12 PCT.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH.
* 10000 FT MSL WIND........EAST 5 TO 10 MPH.
* MIXING HEIGHT............9763 FT AGL.
* TRANSPORT WINDS..........EAST 11 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (107393 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........56 TO 66 DEGS.
24 HR TREND...........UP 1 DEG.
* MAX HUMIDITY.............19 TO 29 PCT.
24 HR TREND...........DOWN 2 TO 5 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........NORTHEAST 5 TO 10 MPH.
FRIDAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........92 TO 102 DEGS.
24 HR TREND...........UP 1 DEG.
* MIN HUMIDITY.............5 TO 10 PCT.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH SHIFTING TO THE NORTH
IN THE AFTERNOON.
* 10000 FT MSL WIND........NORTHEAST AROUND 5 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* MIXING HEIGHT............10879 FT AGL.
* TRANSPORT WINDS..........EAST 7 KNOTS SHIFTING TO THE NORTH 8
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....VERY GOOD (87032 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
SATURDAY
CLEAR. LOWS 56 TO 66. HIGHS 91 TO 101. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 5 TO 10 PCT.
SUNDAY
MOSTLY CLEAR. LOWS 56 TO 66. HIGHS 88 TO 98. SOUTHWEST
WIND AROUND 15 MPH. MINIMUM HUMIDITY 6 TO 10 PCT.
MONDAY
MOSTLY CLEAR. LOWS 53 TO 63. HIGHS 86 TO 96. LIGHT
WINDS. MINIMUM HUMIDITY 7 TO 12 PCT.
TUESDAY
CLEAR. LOWS 52 TO 62. HIGHS 88 TO 98.
WEDNESDAY
CLEAR. LOWS 54 TO 64. 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)
AZZ152-192215-
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-
130 AM MST THU MAR 19 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........87 TO 97 DEGS.
24 HR TREND...........UP 3 TO 7 DEGS.
* MIN HUMIDITY.............6 TO 11 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH.
* 10000 FT MSL WIND........NORTHEAST 5 TO 10 MPH.
* MIXING HEIGHT............6450 FT AGL.
* TRANSPORT WINDS..........EAST 9 KNOTS.
* VENTILATION CATEGORY.....GOOD (58050 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...........UP 1 DEG.
* MAX HUMIDITY.............20 TO 30 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........NORTH 5 TO 10 MPH.
FRIDAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........90 TO 100 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MIN HUMIDITY.............6 TO 11 PCT.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTHWEST AROUND 10
MPH IN THE AFTERNOON.
* 10000 FT MSL WIND........NORTH 5 TO 10 MPH.
* MIXING HEIGHT............8078 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 5 KNOTS SHIFTING TO THE
NORTHWEST 9 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....VERY GOOD (72702 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
SATURDAY
CLEAR. LOWS 54 TO 64. HIGHS 90 TO 100. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 5 TO 10 PCT.
SUNDAY
MOSTLY CLEAR. LOWS 54 TO 64. HIGHS 88 TO 98. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 5 TO 10 PCT.
MONDAY
PARTLY CLOUDY. LOWS 52 TO 62. HIGHS 84 TO 94. EAST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 13 PCT.
TUESDAY
CLEAR. LOWS 51 TO 61. HIGHS 86 TO 96.
WEDNESDAY
CLEAR. LOWS 53 TO 63. 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)
AZZ153-192215-
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-
130 AM MST THU MAR 19 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (10-20 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........79 TO 89 DEGS.
24 HR TREND...........UP 1 TO 4 DEGS.
* MIN HUMIDITY.............6 TO 10 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHEAST AROUND 10 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* 10000 FT MSL WIND........NORTHEAST AROUND 5 MPH SHIFTING TO THE
NORTH IN THE AFTERNOON.
* MIXING HEIGHT............7769 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 10 KNOTS SHIFTING TO THE SOUTH
9 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....GOOD (69921 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...........UP 2 TO 5 DEGS.
* MAX HUMIDITY.............14 TO 24 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 10 MPH SHIFTING TO THE NORTH
AFTER MIDNIGHT.
* 10000 FT MSL WIND........NORTH 10 TO 15 MPH.
FRIDAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........81 TO 91 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MIN HUMIDITY.............6 TO 10 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..NORTHEAST AROUND 10 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* 10000 FT MSL WIND........NORTHWEST 5 TO 10 MPH.
* MIXING HEIGHT............9502 FT AGL.
* TRANSPORT WINDS..........NORTH 9 TO 10 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (95020 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
SATURDAY
CLEAR. LOWS 50 TO 60. HIGHS 81 TO 91. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 6 TO 9 PCT.
SUNDAY
PARTLY CLOUDY. LOWS 48 TO 58. HIGHS 76 TO 86. NORTHWEST
WIND AROUND 15 MPH. MINIMUM HUMIDITY 6 TO 10 PCT.
MONDAY
PARTLY CLOUDY. LOWS 47 TO 57. HIGHS 73 TO 83. LIGHT
WINDS. MINIMUM HUMIDITY 9 TO 14 PCT.
TUESDAY
MOSTLY CLEAR. LOWS 46 TO 56. HIGHS 77 TO 87.
WEDNESDAY
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)
AZZ154-192215-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
130 AM MST THU MAR 19 2026
TODAY
* SKY/WEATHER..............MOSTLY SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........78 TO 88 DEGS.
24 HR TREND...........UP 3 TO 7 DEGS.
* MIN HUMIDITY.............8 TO 15 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH.
* 10000 FT MSL WIND........EAST 5 TO 10 MPH.
* MIXING HEIGHT............7868 FT AGL.
* TRANSPORT WINDS..........EAST 10 TO 11 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (82614 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...........UP 1 DEG.
* MAX HUMIDITY.............14 TO 24 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH.
* 10000 FT MSL WIND........NORTHEAST 5 TO 10 MPH.
FRIDAY
* SKY/WEATHER..............MOSTLY SUNNY (5-15 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........81 TO 91 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MIN HUMIDITY.............6 TO 12 PCT.
24 HR TREND...........DOWN 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHEAST AROUND 10 MPH.
* 10000 FT MSL WIND........NORTH 5 TO 10 MPH.
* MIXING HEIGHT............11327 FT AGL.
* TRANSPORT WINDS..........NORTH 6 TO 9 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (84952 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
SATURDAY
CLEAR. LOWS 55 TO 65. HIGHS 81 TO 91. NORTHWEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 6 TO 11 PCT.
SUNDAY
MOSTLY CLEAR. LOWS 54 TO 64. HIGHS 79 TO 89. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 6 TO 11 PCT.
MONDAY
PARTLY CLOUDY. LOWS 52 TO 62. HIGHS 75 TO 85. SOUTHEAST
WIND AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 17 PCT.
TUESDAY
CLEAR. LOWS 50 TO 60. HIGHS 77 TO 87.
WEDNESDAY
CLEAR. LOWS 53 TO 63. 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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