693
FNUS75 KMSO 112213
FWSMSO
SPOT FORECAST FOR BORDER RAID 25B RX
NATIONAL WEATHER SERVICE MISSOULA MT
413 PM MDT MON MAY 11 2026
FORECAST IS BASED ON FORECAST START TIME OF 0800 MDT ON MAY 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
WARM AND DRY CONDITIONS ARE EXPECTED ON TUESDAY. THE
GRADIENT WILL BE EASTERLY BUT PARTS OF THE BURN MAY GO LIGHT AND VARIABLE
WINDS AT TIMES AS DIURNAL WINDS WORK AGAINST THE EASTERLY WINDS.
OVERALL, WIND APPEAR LIGHT INTO TUESDAY NIGHT WITH DECENT RH
RECOVERY ON TUESDAY NIGHT.
A COLD FRONT ARRIVES LATE MORNING/EARLY AFTERNOON (MOSTLY LIKELY
AROUND NOON) WEDNESDAY WITH AN INCREASE IN SOUTHWEST WINDS WITH
GUSTS TO 25 MPH. GUSTS TO 35 MPH ARE POSSIBLE NEAR HEAVIER SHOWERS
OR ANY THUNDERSTORMS. IT WILL BE SIGNIFICANTLY COOLER WITH HIGHER
MIN RH COMPARED TO TUESDAY. THE BEST RAIN CHANCES WILL BE
WEDNESDAY AFTERNOON AND EVENING WITH A 20% CHANCE OF WETTING RAINS
DURING THE DAY, 40% DURING THE OVERNIGHT HOURS. PRECIPITATION
AMOUNTS WILL BE TRICKY GIVEN THE CONVECTIVE NATURE WITH 25TH
PERCENTILE AMOUNTS NEAR 0.10 INCH BUT 75TH PERCENTILE AMOUNTS NEAR
0.50 INCH BY THURSDAY MORNING, THUS A WIDE SPREAD IN POTENTIAL
AMOUNTS.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY TO PARTLY CLOUDY.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MAX TEMPERATURE.....68-73.
* MIN HUMIDITY........23-28 PERCENT.
* WIND (20 FT)........NORTHEAST TO EAST 3-7 MPH WITH GUSTS TO 13
MPH IN THE AFTERNOON.
* MIXING HEIGHT.......1000 FT AGL INCREASING TO 4500 FT AGL IN
THE AFTERNOON.
* MIXING WINDS........SOUTHEAST 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
TUESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
BY EARLY WEDNESDAY MORNING.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MIN TEMPERATURE.....49-54.
* MAX HUMIDITY........53-58 PERCENT.
* WIND (20 FT)........EAST 3-7 MPH.
* MIXING HEIGHT.......2500 FT AGL DECREASING TO 500 FT AGL EARLY IN
THE EVENING.
* MIXING WINDS........SOUTHEAST 5 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
WEDNESDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF MORNING RAIN
SHOWERS. RAIN SHOWERS LIKELY IN THE AFTERNOON WITH A SLIGHT
CHANCE OF THUNDERSTORMS.
* CWR (> 0.10 INCH)...20 PERCENT.
* CHANCE LIGHTNING....UP TO 15 PERCENT.
* MAX TEMPERATURE.....57-62.
* MIN HUMIDITY........50-55 PERCENT.
* WIND (20 FT)........SOUTH 5-6 MPH INCREASING TO SOUTHWEST 13-18
MPH WITH GUSTS TO AROUND 25 MPH IN THE AFTERNOON. GUSTS TO 35
MPH WITH HEAVIER SHOWERS OR THUNDERSTORMS.
* MIXING HEIGHT.......2500 FT AGL INCREASING TO 4000 FT AGL IN THE
AFTERNOON.
* MIXING WINDS........SOUTHWEST 15 MPH.
* PRECIP AMOUNT.......0.04-0.14 INCHES.
FORECAST DAYS 3 THROUGH 5
THURSDAY
CHANCE OF RAIN SHOWERS, PARTLY TO MOSTLY CLOUDY. LOWS 41-46.
HIGHS 49-54. SOUTHWEST WINDS 18-23 MPH.
FRIDAY
BREEZY. PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. LOWS 37-42.
HIGHS 49-54. SOUTHWEST WINDS 15-25 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. LOWS 34-39. HIGHS
44-49. SOUTHWEST WINDS 13-21 MPH.
FORECASTER...BOOTH
REQUESTED BY...JASON CONWAY
TYPE OF REQUEST...WILDFIRE
.TAG 2613407.0/MSO
.DELDT 05/11/26
.FORMATTERVERSION 2.0.0
.EMAIL JON.AMES@USDA.GOV,JASON.CONWAY@USDA.GOV,WESLEY.DARLAND@USDA.GOV
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