164
FNUS75 KBYZ 062009
FWSBYZ
SPOT FORECAST FOR HI LINE...USWFS
NATIONAL WEATHER SERVICE BILLINGS MT
209 PM MDT MON APR 6 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
THERE IS STILL MODEL DISCREPANCY REGARDING THE TIMING AND
STRENGTH OF THE SYSTEM MOVING INTO THE REGION THIS WEEKEND. AT
THIS TIME IT LOOKS LIKE FRIDAY INTO SATURDAY WILL FEATURE MUCH
ABOVE NORMAL TEMPERATURES WITH BREEZY CONDITIONS. THE CURRENT
FORECAST BRINGS PRECIPITATION INTO THE AREA SATURDAY NIGHT INTO
SUNDAY. DUE TO HIGH UNCERTAINTY, ALL DETAILS ARE LIKELY TO CHANGE.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....62-66.
MIN HUMIDITY........30-34 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHEAST WINDS 6 TO 12 MPH WITH GUSTS TO
AROUND 20 MPH.
RIDGETOP...........SOUTHEAST AROUND 35 MPH.
MIXING HEIGHT.......2300 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 25 MPH.
TIME (MDT) 2 PM 5 PM
SKY (%).........37 37
WEATHER COV.....
WEATHER TYPE....NONE NONE
TSTM COV........
CHC OF LTNG (%).0 0
TEMP............60 63
RH..............36 33
20 FT WIND......SE 11G18 SE 12G20
FRIDAY NIGHT
SKY/WEATHER.........INCREASING CLOUDS.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....40-44.
MAX HUMIDITY........79-84 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH-SOUTHEAST WINDS 5 TO 10 MPH WITH GUSTS TO
AROUND 20 MPH.
RIDGETOP...........SOUTH AROUND 30 MPH.
MIXING HEIGHT.......DECREASING TO 200 FT AGL.
TRANSPORT WINDS.....SOUTH-SOUTHEAST AROUND 15 MPH.
TIME (MDT) 6 PM 9 PM MIDNGT 3 AM
SKY (%).........50 50 57 57
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CHC OF LTNG (%).0 0 0 0
TEMP............62 52 48 45
RH..............35 54 65 76
20 FT WIND......SE 11G18 SE 10G18 SE 10G17 S 9G17
SATURDAY
SKY/WEATHER.........DECREASING CLOUDS.
CWR.................10 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS AT 10 MPH IN THE MORNING
BECOMING WEST AT 5 TO 10 MPH IN THE AFTERNOON.
RIDGETOP...........WEST AROUND 15 MPH.
MIXING HEIGHT.......INCREASING TO 7600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
TIME (MDT) 6 AM 9 AM NOON 3 PM
SKY (%).........58 58 36 36
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CHC OF LTNG (%).0 0 10 10
TEMP............43 51 68 75
RH..............82 68 37 24
20 FT WIND......S 8G14 S 8G14 SW 8G14 SW 7G14
FORECASTER...MCKEOWN-ROBBIE/TORGERSON
REQUESTED BY...JARID GIBSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2609189.0/BYZ
.DELDT 04/06/26
.FORMATTERVERSION 2.0.0
.EMAIL JGIBSON@BLM.GOV
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