609
FNUS75 KBYZ 081003
FWSBYZ
SPOT FORECAST FOR HI LINE...USWFS
NATIONAL WEATHER SERVICE BILLINGS MT
403 AM MDT WED APR 8 2026
FORECAST IS BASED ON IGNITION TIME OF 1400 MDT ON APRIL 10.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
LOOK FOR FAIR SKIES AND SEASONALLY MILD TEMPS FRIDAY. HUMIDITY
SHOULD REMAIN ABOVE 25%. WINDS WILL BE SOUTHEAST AND A BIT GUSTY
THROUGH THE DAY. EXPECT GOOD RH RECOVERY FRIDAY NIGHT WITH SOUTH
WINDS STILL BRISK. SATURDAY, LOOK FOR MIX OF SUN AND CLOUDS. WINDS
MAY NOT BE QUITE AS BRISK AS FRIDAY AND TURN SOUTH TO SOUTHWEST.
MINIMUM RH READINGS MAY BE A LITTLE LOWER ON SATURDAY. A FEW
SHOWERS MAY DEVELOP BY SATURDAY EVENING FOR A FEW HUNDRETHS OF
PRECIPITATION. SUNDAY THROUGH MONDAY THE CHANCE OF WETTING RAIN
GOES TO 35%. BT
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....63-67.
MIN HUMIDITY........28-34 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHEAST 8 TO 14 MPH WITH GUSTS TO AROUND 23 MPH
BY AFTERNOON.
RIDGETOP...........SOUTHWEST AROUND 15-25 MPH.
MIXING HEIGHT.......3500 FT AGL EARLY IN THE MORNING INCREASING TO
4300 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 14 TO 16 MPH.
TIME (MDT) 2 PM 5 PM
SKY (%).........42 29
WEATHER COV.....
WEATHER TYPE....NONE NONE
TSTM COV........
CHC OF LTNG (%).0 0
TEMP............62 65
RH..............34 32
20 FT WIND......SE 13G22 SE 14G22
FRIDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.3 PERCENT.
MIN TEMPERATURE.....43-47.
MAX HUMIDITY........78-82 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHEAST WINDS 7 TO 12 MPH WITH GUSTS TO
AROUND 19 MPH.
RIDGETOP...........SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......3000 FT AGL EARLY IN THE EVENING DECREASING TO
400 FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTH 13 TO 22 MPH.
TIME (MDT) 6 PM 9 PM MIDNGT 3 AM
SKY (%).........36 50 58 68
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CHC OF LTNG (%).0 0 0 0
TEMP............65 55 51 47
RH..............34 50 63 74
20 FT WIND......SE 11G19 SE 11G18 S 10G18 S 7G14
SATURDAY
SKY/WEATHER.........PARTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....75-79.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS 6 TO 9 MPH. GUSTS TO 13 MPH IN AFTERNOON POSSIBLE.
RIDGETOP...........WEST AROUND 15 MPH.
MIXING HEIGHT.......400 FT AGL EARLY IN THE MORNING INCREASING TO
6300 FT AGL IN THE AFTERNOON IN THE MORNING AND
EARLY AFTERNOON.
TRANSPORT WINDS.....SOUTH 12 MPH.
TIME (MDT) 6 AM 9 AM NOON 3 PM
SKY (%).........61 66 43 45
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CHC OF LTNG (%).0 0 10 10
TEMP............46 53 70 76
RH..............79 63 34 23
20 FT WIND......S 6G11 S 8G12 S 8G13 SW 9G14
FORECASTER...TESAR
REQUESTED BY...JARID GIBSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2609198.0/BYZ
.DELDT 04/08/26
.FORMATTERVERSION 2.0.0
.EMAIL JGIBSON@BLM.GOV
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