898
FNUS75 KBYZ 111612
FWSBYZ
SPOT FORECAST FOR UNIT 51 N BRIDGERS...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
1012 AM MDT MON MAY 11 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 MDT ON MAY 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
WARM AND DRY CONDITIONS ARE FORECAST OVER THE SITE TUESDAY
THROUGH MUCH OF WEDNESDAY. TUESDAY WILL SEE LIGHT WINDS WITH
MODERATE MIXING AND MINIMUM RH VALUES IN THE MID TEENS TO AROUND
20 PERCENT. WEDNESDAY WILL BE WARMER, WITH TEMPERATURES IN THE LOW
80SF. EXPECT DRY CONDITIONS INTO THE LATE AFTERNOON, WITH MINIMUM
RH VALUES IN THE MID TEENS PERCENT AGAIN. WINDS WILL INCREASE
FROM THE SOUTH-SOUTHWEST, WITH GUSTS UP TO 25 MPH IN THE
AFTERNOON. STRONG MIXING IS EXPECTED ON WEDNESDAY. THERE IS A LOW
CHANCE OF SCATTERED SHOWERS AND WEAK THUNDERSTORMS LATE WEDNESDAY
AFTERNOON/ MID-EVENING. THE CHANCE OF A WETTING RAIN IS VERY LOW
UNTIL LATE WEDNESDAY.
TUESDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....71-75.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHEAST WINDS 4 TO 8 MPH WITH GUSTS UP TO 15 MPH.
RIDGETOP...........SOUTH 5 TO 10 MPH.
MIXING HEIGHT.......INCREASING TO 7400 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH SHIFTING TO THE WEST 13
TO 15 MPH IN THE AFTERNOON.
TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........14 14 14 23 23 23 29 29 29
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0
TEMP............54 60 62 65 66 69 71 73 73
RH..............36 34 31 28 26 22 18 16 18
20 FT WIND DIR..E E E SE SE SE SE SE SE
20 FT WIND SPD..5 5 5 5 5 6 7 7 5
20 FT WIND GUST.13 13 13 14 14 14 15 15 13
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....47-51.
MAX HUMIDITY........44-50 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......VARIABLE NORTH TO EAST WINDS UP TO 8 MPH WITH GUSTS
TO AROUND 18 MPH IN THE LATE EVENING AND OVERNIGHT.
RIDGETOP...........NORTHEAST AROUND 10 MPH.
MIXING HEIGHT.......DECREASING TO 100 FT AGL OVERNIGHT.
TRANSPORT WINDS.....WEST AROUND 13 MPH SHIFTING TO THE SOUTHEAST 9
TO 12 MPH.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........21 21 21 16 16 16 32 32 32 33 33 33
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............73 71 67 61 58 56 55 53 52 51 50 49
RH..............18 21 27 33 37 41 43 45 46 48 49 46
20 FT WIND DIR..N N NE NE NE NE NE NE E E E E
20 FT WIND SPD..3 3 3 5 5 6 7 7 8 6 5 5
20 FT WIND GUST.13 13 13 16 16 16 18 18 18 17 17 17
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.15 PERCENT.
MAX TEMPERATURE.....80-84.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......VARIBALE WINDS BECOMING SOUTHWEST 8 TO 14 MPH
WITH GUSTS TO 25 MPH.
RIDGETOP...........SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......INCREASING TO 11500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 8 TO 14 MPH SHIFTING TO THE SOUTHWEST
AROUND 20 MPH IN THE AFTERNOON.
TIME (MDT) 6 AM 9 AM NOON 3 PM
SKY (%).........32 30 30 50
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CHC OF LTNG (%).0 0 10 10
TEMP............50 64 78 80
RH..............44 29 18 16
20 FT WIND......E 5G16 SE 8G16 SW 11G22 SW 14G25
FORECASTER...MATOS
REQUESTED BY...JAMES RAY
TYPE OF REQUEST...PRESCRIBED
.TAG 2613173.1/BYZ
.DELDT 05/11/26
.FORMATTERVERSION 2.0.0
.EMAIL JAMES.M.RAY@USDA.GOV
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