154
FNUS55 KTWC 270950
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
250 AM MST SAT DEC 27 2025
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
A WEATHER DISTURBANCE MOVING THROUGH SOUTHEAST
ARIZONA TODAY WILL RESULT IN GENERALLY LIGHT RAIN SHOWERS WITH A
FEW BRIEF PERIODS OF MODERATE RAIN. THESE SHOWERS WILL TAPER OFF
FROM WEST TO EAST LATE THIS MORNING INTO THE EARLY AFTERNOON AS
THE SYSTEM TRACKS EAST. TEMPERATURES WILL REMAIN NEAR NORMAL
LEVELS THIS WEEKEND INTO NEXT WEEK. 20-FOOT WINDS WILL BE 15 MPH
OR LESS AND TERRAIN DRIVEN THROUGH THE WEEKEND. MIN RELATIVE
HUMIDITY VALUES WILL BE ELEVATED TODAY RANGING FROM 45-65 PERCENT
IN THE VALLEYS AND 60-80 PERCENT IN THE MOUNTAINS. DRIER AIR
MOVING INTO THE AREA WILL THEN LOWER MIN RHS TO 25-35 PERCENT
VALLEYS AND 35-50 PERCENT IN THE MOUNTAINS SUNDAY INTO EARLY NEXT
WEEK. BREEZY TO GUSTY SOUTHEAST WINDS RETURN MONDAY ESPECIALLY FOR
THE GILA RIVER VALLEY WITH A GREATER THAN 50% CHANCE FOR GUSTS IN
EXCESS OF 30 MPH FROM MONDAY AFTERNOON TO EARLY TUESDAY MORNING.
AZZ150-280000-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
250 AM MST SAT DEC 27 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (50-60 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........60 TO 70 DEGS.
24 HR TREND...........DOWN 5 TO 9 DEGS.
* MIN HUMIDITY.............50 TO 60 PCT.
24 HR TREND...........UP 6 TO 10 PCT.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHWEST 35 TO 40 MPH.
* MIXING HEIGHT............4171 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 11 KNOTS.
* VENTILATION CATEGORY.....GOOD (45881 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (45-55 PCT) THEN BECOMING
PARTLY CLOUDY (35-45 PCT). SLIGHT CHANCE
OF SHOWERS.
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........38 TO 48 DEGS.
24 HR TREND...........DOWN 9 TO 13 DEGS.
* MAX HUMIDITY.............78 TO 88 PCT.
24 HR TREND...........DOWN 3 TO 6 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
* 10000 FT MSL WIND........SOUTHWEST 20 TO 25 MPH.
SUNDAY
* SKY/WEATHER..............MOSTLY SUNNY (20-30 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........59 TO 69 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............32 TO 42 PCT.
24 HR TREND...........DOWN 19 TO 23 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTH AROUND 10 MPH
IN THE AFTERNOON.
* 10000 FT MSL WIND........NORTHWEST AROUND 10 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* MIXING HEIGHT............3884 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 9 TO 12 KNOTS.
* VENTILATION CATEGORY.....GOOD (46608 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
PARTLY CLOUDY. LOWS 37 TO 47. HIGHS 62 TO 72. NORTHEAST
WIND AROUND 20 MPH. MINIMUM HUMIDITY 22 TO 32 PCT.
TUESDAY
MOSTLY CLOUDY. LOWS 41 TO 51. HIGHS 62 TO 72. EAST
WIND AROUND 20 MPH. MINIMUM HUMIDITY 30 TO 40 PCT.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 44 TO
54. HIGHS 66 TO 76. LIGHT WINDS. MINIMUM HUMIDITY 31 TO 41 PCT.
NEW YEARS DAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 48 TO 58.
HIGHS 61 TO 71.
FRIDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 47 TO 57. HIGHS
61 TO 71.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
AZZ151-280000-
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-
250 AM MST SAT DEC 27 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (65-75 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........70 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........56 TO 66 DEGS.
24 HR TREND...........DOWN 8 TO 12 DEGS.
* MIN HUMIDITY.............60 TO 70 PCT.
24 HR TREND...........UP 21 TO 25 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHWEST 35 TO 40 MPH.
* MIXING HEIGHT............3228 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 13 TO 16 KNOTS.
* VENTILATION CATEGORY.....GOOD (51648 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT) THEN BECOMING
PARTLY CLOUDY (40-50 PCT). SLIGHT CHANCE
OF SHOWERS.
* CHANCE OF PRECIP.........30 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........35 TO 45 DEGS.
24 HR TREND...........DOWN 7 TO 11 DEGS.
* MAX HUMIDITY.............89 TO 99 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
SUNDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT) THEN BECOMING
MOSTLY SUNNY (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........56 TO 66 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............33 TO 43 PCT.
24 HR TREND...........DOWN 28 TO 32 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHEAST AROUND 10 MPH.
* 10000 FT MSL WIND........WEST AROUND 20 MPH BECOMING SOUTHWEST
AROUND 10 MPH IN THE AFTERNOON.
* MIXING HEIGHT............3753 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 9 KNOTS.
* VENTILATION CATEGORY.....FAIR (33777 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
PARTLY CLOUDY. LOWS 34 TO 44. HIGHS 55 TO 65. EAST WIND
AROUND 20 MPH. MINIMUM HUMIDITY 30 TO 40 PCT.
TUESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 35 TO
45. HIGHS 55 TO 65. EAST WIND AROUND 20 MPH. MINIMUM HUMIDITY
36 TO 46 PCT.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 38 TO
48. HIGHS 62 TO 72. LIGHT WINDS. MINIMUM HUMIDITY 34 TO 44 PCT.
NEW YEARS DAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 45 TO 55.
HIGHS 58 TO 68.
FRIDAY
SHOWERS LIKELY. LOWS 44 TO 54. 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)
AZZ152-280000-
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-
250 AM MST SAT DEC 27 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (70-80 PCT). SHOWERS
LIKELY.
* CHANCE OF PRECIP.........80 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........56 TO 66 DEGS.
24 HR TREND...........DOWN 8 TO 12 DEGS.
* MIN HUMIDITY.............66 TO 76 PCT.
24 HR TREND...........UP 24 TO 28 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
* MIXING HEIGHT............3381 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 11 TO 14 KNOTS.
* VENTILATION CATEGORY.....GOOD (47334 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (60-70 PCT) THEN BECOMING
PARTLY CLOUDY (45-55 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........35 TO 45 DEGS.
24 HR TREND...........DOWN 6 TO 10 DEGS.
* MAX HUMIDITY.............85 TO 95 PCT.
24 HR TREND...........UP 1 PCT.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
SUNDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT) THEN BECOMING
MOSTLY SUNNY (20-30 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........55 TO 65 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............30 TO 40 PCT.
24 HR TREND...........DOWN 32 TO 36 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH IN THE MORNING
BECOMING LIGHT.
* 10000 FT MSL WIND........WEST AROUND 20 MPH SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* MIXING HEIGHT............3773 FT AGL.
* TRANSPORT WINDS..........NORTH 9 KNOTS SHIFTING TO THE EAST 8
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....FAIR (30184 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 33 TO 43.
HIGHS 49 TO 59. EAST WIND AROUND 25 MPH. MINIMUM HUMIDITY 32 TO
42 PCT.
TUESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 31 TO 41. HIGHS 50 TO 60. EAST WIND AROUND 20 MPH. MINIMUM
HUMIDITY 36 TO 46 PCT.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 33 TO
43. HIGHS 58 TO 68. LIGHT WINDS. MINIMUM HUMIDITY 33 TO 43 PCT.
NEW YEARS DAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 41 TO 51.
HIGHS 56 TO 66.
FRIDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 41 TO 51. HIGHS
56 TO 66.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
AZZ153-280000-
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-
250 AM MST SAT DEC 27 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (75-85 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........90 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........45 TO 55 DEGS.
24 HR TREND...........DOWN 6 TO 10 DEGS.
* MIN HUMIDITY.............76 TO 86 PCT.
24 HR TREND...........UP 28 TO 32 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
* MIXING HEIGHT............2834 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 17 TO 19 KNOTS.
* VENTILATION CATEGORY.....GOOD (53846 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (65-75 PCT) THEN BECOMING
PARTLY CLOUDY (40-50 PCT). CHANCE OF
SHOWERS AND SNOW SHOWERS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........27 TO 37 DEGS.
24 HR TREND...........DOWN 8 TO 12 DEGS.
* MAX HUMIDITY.............85 TO 95 PCT.
24 HR TREND...........DOWN 3 TO 6 PCT.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 10 MPH.
* 10000 FT MSL WIND........WEST 25 TO 30 MPH.
SUNDAY
* SKY/WEATHER..............PARTLY CLOUDY (25-35 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........46 TO 56 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MIN HUMIDITY.............27 TO 37 PCT.
24 HR TREND...........DOWN 48 TO 52 PCT.
* WIND (20 FT/10-MIN AVG)..NORTH AROUND 10 MPH.
* 10000 FT MSL WIND........NORTH AROUND 20 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* MIXING HEIGHT............5067 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 13 KNOTS.
* VENTILATION CATEGORY.....GOOD (65871 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 26 TO 36. HIGHS 43 TO 53. EAST WIND AROUND 15 MPH. MINIMUM
HUMIDITY 29 TO 39 PCT.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 26 TO 36. HIGHS 45 TO 55. EAST WIND AROUND 15 MPH. MINIMUM
HUMIDITY 32 TO 42 PCT.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 30 TO
40. HIGHS 52 TO 62. LIGHT WINDS. MINIMUM HUMIDITY 29 TO 39 PCT.
NEW YEARS DAY
SHOWERS LIKELY. LOWS 36 TO 46. HIGHS 48 TO 58.
FRIDAY
SHOWERS LIKELY. LOWS 37 TO 47. 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)
AZZ154-280000-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
250 AM MST SAT DEC 27 2025
TODAY
* SKY/WEATHER..............MOSTLY CLOUDY (70-80 PCT). SHOWERS
LIKELY.
* CHANCE OF PRECIP.........70 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........48 TO 58 DEGS.
24 HR TREND...........DOWN 7 TO 11 DEGS.
* MIN HUMIDITY.............67 TO 77 PCT.
24 HR TREND...........UP 22 TO 26 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHWEST 10 TO 15 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
* MIXING HEIGHT............3750 FT AGL.
* TRANSPORT WINDS..........SOUTHWEST 14 TO 17 KNOTS.
* VENTILATION CATEGORY.....GOOD (58125 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLOUDY (55-65 PCT) THEN BECOMING
PARTLY CLOUDY (45-55 PCT). CHANCE OF
SHOWERS.
* CHANCE OF PRECIP.........40 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........32 TO 42 DEGS.
24 HR TREND...........DOWN 6 TO 10 DEGS.
* MAX HUMIDITY.............86 TO 96 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..WEST AROUND 10 MPH.
* 10000 FT MSL WIND........SOUTHWEST 30 TO 35 MPH.
SUNDAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT) THEN BECOMING
MOSTLY SUNNY (15-25 PCT).
* CHANCE OF PRECIP.........10 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........47 TO 57 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............38 TO 48 PCT.
24 HR TREND...........DOWN 28 TO 32 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH IN THE MORNING
BECOMING LIGHT.
* 10000 FT MSL WIND........WEST AROUND 20 MPH BECOMING SOUTHWEST
AROUND 10 MPH IN THE AFTERNOON.
* MIXING HEIGHT............3856 FT AGL.
* TRANSPORT WINDS..........NORTH 9 KNOTS SHIFTING TO THE SOUTHEAST
7 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....FAIR (26992 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
MONDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 33 TO 43. HIGHS 42 TO 52. EAST WIND AROUND 25 MPH. MINIMUM
HUMIDITY 35 TO 45 PCT.
TUESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 30 TO 40. HIGHS 43 TO 53. EAST WIND AROUND 25 MPH. MINIMUM
HUMIDITY 40 TO 50 PCT.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 35 TO
45. HIGHS 52 TO 62. SOUTHEAST WIND AROUND 15 MPH. MINIMUM
HUMIDITY 38 TO 48 PCT.
NEW YEARS DAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 42 TO 52.
HIGHS 49 TO 59.
FRIDAY
SHOWERS LIKELY. LOWS 41 TO 51. HIGHS 49 TO 59.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
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