498
FNUS55 KTWC 231006
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
306 AM MST TUE DEC 23 2025
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
WARM AND DRY CONDITIONS CONTINUE TODAY, WITH HIGHS
15-20 DEGREES ABOVE NORMAL. A COOLING TREND STARTS ON WEDNESDAY AND
CONTINUES INTO THE WEEKEND, WITH HIGHS NEAR OR JUST ABOVE NORMAL
LEVELS THIS WEEKEND INTO EARLY NEXT WEEK. SUBTROPICAL MOISTURE WILL
STREAM NORTHWARD AHEAD OF A PACIFIC STORM SYSTEM, RESULTING IN A
SOME SHOWER ACTIVITY TONIGHT INTO WEDNESDAY AND THEN AGAIN ANOTHER
ROUND WEDNESDAY NIGHT INTO THURSDAY. ADDITIONAL PRECIPITATION
CHANCES MAY OCCUR LATE THIS WEEKEND INTO NEXT WEEK. 20-FOOT WINDS
WILL BE 15 MPH OR LESS AND TERRAIN DRIVEN INTO THE WEEKEND, THOUGH
SOME GUSTS AROUND 20 TO 25 MPH ARE EXPECTED TODAY AND WEDNESDAY. MIN
RELATIVE HUMIDITY VALUES AT ALL ELEVATIONS WILL BE IN THE 10-20
PERCENT RANGE TODAY, INCREASING TO 30-45 PERCENT (AND HIGHER IN THE
MOUNTAINS) WEDNESDAY INTO THE WEEKEND.
AZZ150-232245-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
306 AM MST TUE DEC 23 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........74 TO 84 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MIN HUMIDITY.............18 TO 28 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTH 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTH 35 TO 40 MPH.
* MIXING HEIGHT............6614 FT AGL.
* TRANSPORT WINDS..........SOUTH 12 TO 20 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (132280 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........50 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........52 TO 62 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MAX HUMIDITY.............68 TO 78 PCT.
24 HR TREND...........UP 29 TO 33 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 15 MPH SHIFTING TO THE
SOUTHEAST AFTER MIDNIGHT.
* 10000 FT MSL WIND........SOUTH AROUND 30 MPH INCREASING TO
SOUTHWEST AROUND 40 MPH AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER..............MOSTLY CLOUDY (65-75 PCT). SLIGHT CHANCE
OF SHOWERS.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........69 TO 79 DEGS.
24 HR TREND...........DOWN 3 TO 7 DEGS.
* MIN HUMIDITY.............38 TO 48 PCT.
24 HR TREND...........UP 18 TO 22 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHWEST 35 TO 40 MPH.
* MIXING HEIGHT............1138 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 16 KNOTS.
* VENTILATION CATEGORY.....MARGINAL (18208 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
CHRISTMAS DAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 52 TO 62.
HIGHS 70 TO 80. SOUTH WIND AROUND 15 MPH. MINIMUM HUMIDITY 42 TO
52 PCT.
FRIDAY
MOSTLY CLOUDY. LOWS 49 TO 59. HIGHS 64 TO 74. LIGHT
WINDS. MINIMUM HUMIDITY 37 TO 47 PCT.
SATURDAY
MOSTLY CLOUDY. LOWS 43 TO 53. HIGHS 60 TO 70. LIGHT
WINDS. MINIMUM HUMIDITY 35 TO 45 PCT.
SUNDAY
MOSTLY CLOUDY. LOWS 41 TO 51. HIGHS 60 TO 70.
MONDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 43 TO 53.
HIGHS 62 TO 72.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
AZZ151-232245-
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-
306 AM MST TUE DEC 23 2025
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (45-55 PCT) THEN BECOMING
MOSTLY CLOUDY (50-60 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........72 TO 82 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MIN HUMIDITY.............14 TO 22 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 30 TO 35 MPH.
* MIXING HEIGHT............5092 FT AGL.
* TRANSPORT WINDS..........SOUTH 12 TO 20 KNOTS.
* VENTILATION CATEGORY.....EXCELLENT (101840 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........45 TO 55 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............64 TO 74 PCT.
24 HR TREND...........UP 28 TO 32 PCT.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 15 MPH SHIFTING TO THE
SOUTHEAST AFTER MIDNIGHT.
* 10000 FT MSL WIND........SOUTH AROUND 20 MPH INCREASING TO
SOUTHWEST AROUND 30 MPH AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER..............MOSTLY CLOUDY (70-80 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........63 TO 73 DEGS.
24 HR TREND...........DOWN 5 TO 9 DEGS.
* MIN HUMIDITY.............40 TO 50 PCT.
24 HR TREND...........UP 24 TO 28 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTH 35 TO 40 MPH.
* MIXING HEIGHT............2825 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 11 TO 19 KNOTS.
* VENTILATION CATEGORY.....GOOD (53675 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
CHRISTMAS DAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 47 TO 57.
HIGHS 66 TO 76. SOUTH WIND AROUND 15 MPH. MINIMUM HUMIDITY 44 TO
54 PCT.
FRIDAY
MOSTLY CLOUDY. LOWS 44 TO 54. HIGHS 63 TO 73. LIGHT
WINDS. MINIMUM HUMIDITY 35 TO 45 PCT.
SATURDAY
MOSTLY CLOUDY. LOWS 37 TO 47. HIGHS 59 TO 69. LIGHT
WINDS. MINIMUM HUMIDITY 33 TO 43 PCT.
SUNDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 38 TO 48.
HIGHS 58 TO 68.
MONDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 38 TO 48.
HIGHS 58 TO 68.
NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION
(3500 MSL)
AZZ152-232245-
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-
306 AM MST TUE DEC 23 2025
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........70 TO 80 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............14 TO 24 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTH 25 TO 30 MPH.
* MIXING HEIGHT............5086 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 11 TO 16 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (81376 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT) THEN BECOMING
MOSTLY CLOUDY (60-70 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........20 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........44 TO 54 DEGS.
24 HR TREND...........UP 1 TO 4 DEGS.
* MAX HUMIDITY.............57 TO 67 PCT.
24 HR TREND...........UP 19 TO 23 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 15 MPH SHIFTING TO THE
NORTHWEST AFTER MIDNIGHT.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
WEDNESDAY
* SKY/WEATHER..............MOSTLY CLOUDY (70-80 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........61 TO 71 DEGS.
24 HR TREND...........DOWN 6 TO 10 DEGS.
* MIN HUMIDITY.............40 TO 50 PCT.
24 HR TREND...........UP 26 TO 30 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHWEST AROUND 25 MPH INCREASING TO
AROUND 35 MPH IN THE AFTERNOON.
* MIXING HEIGHT............3037 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 8 KNOTS SHIFTING TO THE
SOUTHEAST 9 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....FAIR (27333 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
CHRISTMAS DAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 46 TO 56.
HIGHS 65 TO 75. LIGHT WINDS. MINIMUM HUMIDITY 43 TO 53 PCT.
FRIDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 43 TO 53.
HIGHS 63 TO 73. LIGHT WINDS. MINIMUM HUMIDITY 36 TO 46 PCT.
SATURDAY
MOSTLY CLOUDY. LOWS 36 TO 46. HIGHS 59 TO 69. LIGHT
WINDS. MINIMUM HUMIDITY 32 TO 42 PCT.
SUNDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 37 TO 47.
HIGHS 56 TO 66.
MONDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 35 TO 45.
HIGHS 54 TO 64.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
AZZ153-232245-
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-
306 AM MST TUE DEC 23 2025
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........61 TO 71 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............15 TO 24 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
* MIXING HEIGHT............4044 FT AGL.
* TRANSPORT WINDS..........EAST 12 KNOTS SHIFTING TO THE SOUTH 20
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....VERY GOOD (80880 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (40-50 PCT) THEN BECOMING
MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........39 TO 49 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............64 TO 74 PCT.
24 HR TREND...........UP 28 TO 32 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH SHIFTING TO THE
NORTHWEST AFTER MIDNIGHT.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
WEDNESDAY
* SKY/WEATHER..............MOSTLY CLOUDY (70-80 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........60 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........51 TO 61 DEGS.
24 HR TREND...........DOWN 8 TO 12 DEGS.
* MIN HUMIDITY.............49 TO 59 PCT.
24 HR TREND...........UP 32 TO 36 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHWEST AROUND 25 MPH INCREASING TO
AROUND 35 MPH IN THE AFTERNOON.
* MIXING HEIGHT............2127 FT AGL.
* TRANSPORT WINDS..........NORTH 8 KNOTS SHIFTING TO THE SOUTH 15
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....FAIR (31905 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
CHRISTMAS DAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 40 TO 50.
HIGHS 53 TO 63. LIGHT WINDS. MINIMUM HUMIDITY 54 TO 64 PCT.
FRIDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 38 TO 48.
HIGHS 51 TO 61. LIGHT WINDS. MINIMUM HUMIDITY 43 TO 53 PCT.
SATURDAY
MOSTLY CLOUDY. LOWS 31 TO 41. HIGHS 48 TO 58. LIGHT
WINDS. MINIMUM HUMIDITY 31 TO 41 PCT.
SUNDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 31 TO 41. HIGHS 47 TO 57.
MONDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 32 TO 42. HIGHS 47 TO 57.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
AZZ154-232245-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
306 AM MST TUE DEC 23 2025
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (45-55 PCT) THEN BECOMING
MOSTLY CLOUDY (50-60 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........63 TO 73 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............14 TO 23 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 25 TO 30 MPH.
* MIXING HEIGHT............5667 FT AGL.
* TRANSPORT WINDS..........SOUTH 12 TO 19 KNOTS.
* VENTILATION CATEGORY.....VERY GOOD (87838 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........43 TO 53 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MAX HUMIDITY.............51 TO 61 PCT.
24 HR TREND...........UP 26 TO 30 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
WEDNESDAY
* SKY/WEATHER..............MOSTLY CLOUDY (70-80 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........55 TO 65 DEGS.
24 HR TREND...........DOWN 6 TO 10 DEGS.
* MIN HUMIDITY.............40 TO 50 PCT.
24 HR TREND...........UP 24 TO 28 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
* MIXING HEIGHT............3908 FT AGL.
* TRANSPORT WINDS..........EAST 10 KNOTS SHIFTING TO THE SOUTH 17
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....GOOD (66436 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
CHRISTMAS DAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 44 TO 54.
HIGHS 57 TO 67. SOUTHWEST WIND AROUND 20 MPH. MINIMUM HUMIDITY
48 TO 58 PCT.
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 52. HIGHS 55 TO 65. SOUTHWEST
WIND AROUND 15 MPH. MINIMUM HUMIDITY 38 TO 48 PCT.
SATURDAY
MOSTLY CLOUDY. LOWS 36 TO 46. HIGHS 52 TO 62. LIGHT
WINDS. MINIMUM HUMIDITY 34 TO 44 PCT.
SUNDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 37 TO 47. HIGHS 49 TO 59.
MONDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 36 TO 46. HIGHS 47 TO 57.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
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