231
FNUS55 KTWC 031013
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
313 AM MST SUN MAY 3 2026
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
AN APPROACHING PACIFIC STORM SYSTEM WILL TURN WINDS FROM THE
SOUTHEAST TO THE SOUTHWEST TODAY, THEN WILL INCREASE THOSE WINDS
MONDAY AND TUESDAY. 20-FOOT SOUTH TO SOUTHWEST WINDS OF 15-20
MPH AND GUSTS TO 30-35 MPH ARE EXPECTED MONDAY, WITH SOUTHWEST
TO WEST WINDS OF 20-25 MPH AND GUSTS TO 35-40 MPH ON TUESDAY.
MOISTURE WILL INCREASE WITH INCOMING CHANCES FOR SHOWERS AND
THUNDERSTORMS FROM LATE MONDAY THROUGH TUESDAY. MIN RELATIVE
HUMIDITY VALUES WILL BE IN THE 18-23 PERCENT RANGE IN THE LOWER
ELEVATIONS TO THE EAST OF TUCSON ON SUNDAY, WITH VALUES IN THE
10-15 PERCENT RANGE FROM TUCSON WESTWARD. MIN RH VALUES THEN
INCREASE INTO THE 17-27 PERCENT RANGE ACROSS THE LOWER
ELEVATIONS MONDAY, WITH VALUES ABOVE 20 PERCENT ON TUESDAY (AND
EVEN HIGHER VALUES IN THE MOUNTAINS). RELATIVE HUMIDITY LEVELS
DROP BACK INTO THE SINGLE DIGITS THE SECOND HALF OF NEXT WEEK.
HIGH TEMPERATURES WILL BE 3-5 DEGREES ABOVE NORMAL TODAY,
AROUND NORMAL MONDAY, FALLING BELOW NORMAL TUESDAY AND WEDNESDAY
AND THEN RISING BACK ABOVE NORMAL THE LATTER HALF OF NEXT WEEK.
AZZ150-032215-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
313 AM MST SUN MAY 3 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........86 TO 96 DEGS.
24 HR TREND...........UP 3 TO 6 DEGS.
* MIN HUMIDITY.............11 TO 21 PCT.
24 HR TREND...........UP 2 TO 5 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTH 20 TO 25 MPH.
* MIXING HEIGHT............11786 FT AGL.
* TRANSPORT WINDS..........SOUTH 15 TO 22 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (259292 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........58 TO 68 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MAX HUMIDITY.............44 TO 54 PCT.
24 HR TREND...........UP 17 TO 21 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH 15 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST 25 TO 30 MPH.
MONDAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........75 TO 85 DEGS.
24 HR TREND...........DOWN 9 TO 13 DEGS.
* MIN HUMIDITY.............20 TO 30 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST 35 TO 40 MPH.
* MIXING HEIGHT............9264 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 20 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (185280 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 52 TO
62. HIGHS 70 TO 80. SOUTHWEST WIND AROUND 20 MPH. MINIMUM
HUMIDITY 20 TO 30 PCT.
WEDNESDAY
CLEAR. LOWS 45 TO 55. HIGHS 76 TO 86. LIGHT WINDS.
MINIMUM HUMIDITY 12 TO 19 PCT.
THURSDAY
CLEAR. LOWS 51 TO 61. HIGHS 85 TO 95. LIGHT WINDS.
MINIMUM HUMIDITY 8 TO 12 PCT.
FRIDAY
MOSTLY CLEAR. LOWS 56 TO 66. HIGHS 90 TO 100.
SATURDAY
MOSTLY CLEAR. LOWS 59 TO 69. HIGHS 92 TO 102.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
AZZ151-032215-
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-
313 AM MST SUN MAY 3 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........79 TO 89 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MIN HUMIDITY.............15 TO 25 PCT.
24 HR TREND...........DOWN 2 TO 5 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST AROUND 15 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTH 15 TO 20 MPH.
* MIXING HEIGHT............9212 FT AGL.
* TRANSPORT WINDS..........SOUTH 14 TO 18 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (165816 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........52 TO 62 DEGS.
24 HR TREND...........UP 1 DEG.
* MAX HUMIDITY.............46 TO 56 PCT.
24 HR TREND...........DOWN 6 TO 10 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 15 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST AROUND 20 MPH INCREASING TO
AROUND 35 MPH AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........73 TO 83 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MIN HUMIDITY.............17 TO 27 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
* MIXING HEIGHT............6246 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 22 TO 23 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (143658 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
TUESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS 49 TO 59. HIGHS 66 TO 76. SOUTHWEST WIND
AROUND 20 MPH. MINIMUM HUMIDITY 25 TO 35 PCT.
WEDNESDAY
CLEAR. LOWS 39 TO 49. HIGHS 70 TO 80. LIGHT WINDS.
MINIMUM HUMIDITY 14 TO 23 PCT.
THURSDAY
CLEAR. LOWS 45 TO 55. HIGHS 78 TO 88. LIGHT WINDS.
MINIMUM HUMIDITY 8 TO 17 PCT.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 59. HIGHS 82 TO 92.
SATURDAY
MOSTLY CLEAR. LOWS 53 TO 63. HIGHS 84 TO 94.
NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION
(3500 MSL)
AZZ152-032215-
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-
313 AM MST SUN MAY 3 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........77 TO 87 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MIN HUMIDITY.............16 TO 26 PCT.
24 HR TREND...........DOWN 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 20 MPH SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTH 15 TO 20 MPH.
* MIXING HEIGHT............9600 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 16 KNOTS SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (153600 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT) THEN BECOMING
PARTLY CLOUDY (35-45 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........50 TO 60 DEGS.
24 HR TREND...........UP 1 DEG.
* MAX HUMIDITY.............45 TO 55 PCT.
24 HR TREND...........DOWN 9 TO 13 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHWEST AROUND 20 MPH INCREASING TO
AROUND 30 MPH AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT) THEN BECOMING
MOSTLY CLOUDY (55-65 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........75 TO 85 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............16 TO 26 PCT.
24 HR TREND...........DOWN 3 TO 6 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 15 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST 25 TO 30 MPH.
* MIXING HEIGHT............9035 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 19 TO 24 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (216840 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
TUESDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS 49 TO 59. HIGHS 66 TO 76. SOUTHWEST WIND
AROUND 20 MPH. MINIMUM HUMIDITY 25 TO 35 PCT.
WEDNESDAY
CLEAR. LOWS 40 TO 50. HIGHS 70 TO 80. LIGHT WINDS.
MINIMUM HUMIDITY 12 TO 22 PCT.
THURSDAY
CLEAR. LOWS 44 TO 54. HIGHS 77 TO 87. EAST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 7 TO 15 PCT.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 58. HIGHS 81 TO 91.
SATURDAY
MOSTLY CLEAR. LOWS 51 TO 61. HIGHS 83 TO 93.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
AZZ153-032215-
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-
313 AM MST SUN MAY 3 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (60-70 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........65 TO 75 DEGS.
24 HR TREND...........UP 7 TO 11 DEGS.
* MIN HUMIDITY.............25 TO 35 PCT.
24 HR TREND...........DOWN 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST AROUND 15 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTH 15 TO 20 MPH.
* MIXING HEIGHT............9080 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 15 KNOTS SHIFTING TO THE SOUTH
17 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (154360 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........44 TO 54 DEGS.
24 HR TREND...........UP 3 TO 6 DEGS.
* MAX HUMIDITY.............51 TO 61 PCT.
24 HR TREND...........DOWN 15 TO 19 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
MONDAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........63 TO 73 DEGS.
24 HR TREND...........DOWN 4 TO 8 DEGS.
* MIN HUMIDITY.............20 TO 30 PCT.
24 HR TREND...........DOWN 3 TO 6 PCT.
* WIND (20 FT/10-MIN AVG)..WEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHWEST 25 TO 30 MPH.
* MIXING HEIGHT............8922 FT AGL.
* TRANSPORT WINDS..........WEST 22 TO 29 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (258738 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
TUESDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 41 TO 51. HIGHS 54 TO 64. SOUTHWEST WIND AROUND 15 MPH.
MINIMUM HUMIDITY 36 TO 46 PCT.
WEDNESDAY
MOSTLY CLEAR. LOWS 33 TO 43. HIGHS 61 TO 71. LIGHT
WINDS. MINIMUM HUMIDITY 14 TO 24 PCT.
THURSDAY
MOSTLY CLEAR. LOWS 37 TO 47. HIGHS 67 TO 77. LIGHT
WINDS. MINIMUM HUMIDITY 9 TO 15 PCT.
FRIDAY
MOSTLY CLEAR. LOWS 42 TO 52. HIGHS 71 TO 81.
SATURDAY
MOSTLY CLEAR. LOWS 46 TO 56. HIGHS 74 TO 84.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
AZZ154-032215-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
313 AM MST SUN MAY 3 2026
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........68 TO 78 DEGS.
24 HR TREND...........UP 4 TO 8 DEGS.
* MIN HUMIDITY.............21 TO 31 PCT.
24 HR TREND...........DOWN 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST AROUND 20 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTH 15 TO 20 MPH.
* MIXING HEIGHT............10468 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 15 KNOTS SHIFTING TO THE SOUTH
17 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....EXCELLENT (177956 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (45-55 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........47 TO 57 DEGS.
24 HR TREND...........UP 1 DEG.
* MAX HUMIDITY.............45 TO 55 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 AROUND 20 MPH INCREASING TO
AROUND 30 MPH AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........64 TO 74 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MIN HUMIDITY.............20 TO 30 PCT.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 20 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
* MIXING HEIGHT............9038 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 21 TO 24 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (203355 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
TUESDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS 44 TO 54. HIGHS 57 TO 67. SOUTHWEST WIND
AROUND 20 MPH. MINIMUM HUMIDITY 31 TO 41 PCT.
WEDNESDAY
CLEAR. LOWS 36 TO 46. HIGHS 60 TO 70. WEST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 15 TO 25 PCT.
THURSDAY
CLEAR. LOWS 42 TO 52. HIGHS 67 TO 77. EAST WIND
AROUND 15 MPH. MINIMUM HUMIDITY 10 TO 19 PCT.
FRIDAY
MOSTLY CLEAR. LOWS 46 TO 56. HIGHS 71 TO 81.
SATURDAY
MOSTLY CLEAR. LOWS 49 TO 59. HIGHS 73 TO 83.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
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