003
FNUS75 KBYZ 271235
FWSBYZ
SPOT FORECAST FOR YELLOW MULE...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
635 AM MDT THU AUG 27 2026
FORECAST IS BASED ON FORECAST START TIME OF 0700 MDT ON AUGUST 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
OVERALL, EXPECT AN ACTIVE COUPLE OF DAYS OVER THE FIRE SITE, WITH
BRISK SOUTHWEST WIND AT TIMES.
EXPECT LIGHT SOUTHERLY WINDS THIS MORNING UNDER 10 MPH, TURNING
MORE SOUTHWEST IN THE AFTERNOON AT 8-12 MPH WITH GUSTS TO 20 MPH.
RH READINGS WILL DROP TO AROUND 30 PERCENT. ISOLATED TO SCATTERED
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER THE FIRE
VICINITY AFTER 1:00 PM. THUNDERSTORMS COULD PRODUCE STRONG GUSTS
OVER 50 MPH. THERE MAY BE SECONDARY WAVES OF SHOWERS/STORMS IN THE
EVENING AS WELL. OVERNIGHT RH READINGS WILL RECOVER ABOVE 60%.
FOR FRIDAY, MORNING SHOWERS ARE EXPECTED OVER THE FIRE SITE, WITH
SCATTERED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. AGAIN, SOME
STORM CELLS MAY PRODUCE STRONG WINDS.
TODAY
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. SOME
THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE
AFTERNOON.
CWR.................21 PERCENT.
CHANCE OF LIGHTNING.34 PERCENT.
MAX TEMPERATURE.....65-69.
MIN HUMIDITY........29-34 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 9 MPH, BECOMING 8-12 MPH WITH GUSTS
TO 20 MPH POSSIBLE IN AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGETOP...........SOUTHWEST AROUND 15-20 MPH.
MIXING HEIGHT.......500 FT AGL EARLY IN THE MORNING INCREASING TO
9200 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 14 MPH.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. SOME THUNDERSTORMS MAY PRODUCE GUSTY
WINDS IN THE EVENING.
CWR.................17 PERCENT.
CHANCE OF LIGHTNING.25 PERCENT.
MIN TEMPERATURE.....46-50.
MAX HUMIDITY........67-71 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 11 MPH WITH GUSTS TO
AROUND 18 MPH. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS IN THE EVENING.
RIDGETOP...........SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......4300 FT AGL EARLY IN THE EVENING DECREASING TO
400 FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 12 MPH.
FRIDAY
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE MORNING, THEN RAIN
SHOWERS AND CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE GUSTY
WINDS.
CWR.................55 PERCENT.
CHANCE OF LIGHTNING.33 PERCENT.
MAX TEMPERATURE.....56-60.
MIN HUMIDITY........35-40 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 7 TO 12 MPH WITH GUSTS TO AROUND
23 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS.
RIDGETOP...........SOUTHWEST AROUND 15-25 MPH.
MIXING HEIGHT.......500 FT AGL EARLY IN THE MORNING INCREASING TO
5700 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
FORECASTER...TESAR
REQUESTED BY...JOHN BRYDON
TYPE OF REQUEST...WILDFIRE
.TAG 2620596.1/BYZ
.DELDT 08/27/26
.FORMATTERVERSION 2.0.0
.EMAIL MTBDC@FIRENET.GOV
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