539
FNUS75 KBYZ 081014
FWSBYZ
SPOT FORECAST FOR HORSETHIEF SW RX...USWFS
NATIONAL WEATHER SERVICE BILLINGS MT
414 AM MDT WED APR 8 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 MDT ON APRIL 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
A DISTURABNCE IN NORTHWEST FLOW IS EXPECTED TO TRACK OVER
NORTHEAST MONTANA EARLY THURSDAY. INDICATIONS ARE THIS WILL DRIVE
A WEAK DRY COLD FRONT THROUGH THE BURN SITE THURSDAY MORNING
SHIFTING VARIABLE WINDS TO THE NORTH/NORTHEAST AT 7-15 MPH. WINDS
TURN MAINLY TO THE EAST/NORTHEAST IN THE AFTERNOON. RH LEVELS WILL
DROP INTO THE 30S IN THE AFTERNOON. WINDS TURN LIGHT TO THE EAST
THEN SOUTH THURSDAY NIGHT WITH GOOD RH RECOVERY. FOR FRIDAY...LOOK
FOR WARMER TEMPS AND SOMEWHAT LOWER RH READINGS. SOUTHERLY WINDS
UNDER 15 MPH WILL PREVAIL. BT
THURSDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....52-56.
MIN HUMIDITY........34-38 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING NORTHEAST 6 TO 9 MPH IN
THE MID TO LATE MORNING.
RIDGETOP...........NORTHWEST AROUND 25 MPH.
MIXING HEIGHT.......1400 FT AGL EARLY IN THE MORNING INCREASING TO
5300 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTH/NORTHEAST 10 TO 14 MPH.
TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........28 28 28 11 11 11 17 17 17
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0
TEMP............37 41 44 47 49 51 52 53 54
RH..............53 48 44 41 39 38 37 35 34
20 FT WIND DIR..N N N NE NE NE NE NE NE
20 FT WIND SPD..6 6 7 7 7 7 7 7 7
20 FT WIND GUST.10 11 10 12 12 12 13 13 13
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....27-31.
MAX HUMIDITY........76-85 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......EAST WINDS UP TO 6 MPH IN THE EVENING BECOMING
LIGHT.
RIDGETOP...........WEST AROUND 20 MPH.
MIXING HEIGHT.......4800 FT AGL EARLY IN THE EVENING DECREASING TO
100 FT AGL OVERNIGHT.
TRANSPORT WINDS.....NORTHEAST 8 TO 9 MPH SHIFTING TO THE SOUTHEAST
7 TO 8 MPH IN THE LATE EVENING AND OVERNIGHT.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........16 16 16 14 14 14 5 5 5 8 8 8
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............53 50 46 42 40 38 36 34 33 31 30 29
RH..............37 41 45 51 56 61 66 71 76 80 83 84
20 FT WIND DIR..NE NE NE E E E E E E E E E
20 FT WIND SPD..6 6 6 5 5 5 2 2 2 2 2 2
20 FT WIND GUST.11 11 11 10 10 10 6 6 6 4 4 4
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....64-68.
MIN HUMIDITY........26-31 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING SOUTHEAST 5-8 MPH IN
THE AFTERNOON.
RIDGETOP...........SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......300 FT AGL EARLY IN THE MORNING INCREASING TO
4400 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 10 MPH.
TIME (MDT) 6 AM 9 AM NOON 3 PM
SKY (%).........11 23 33 41
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CHC OF LTNG (%).0 0 0 0
TEMP............29 38 54 64
RH..............83 62 40 30
20 FT WIND......NE 2G4 SE 3G6 SE 6G10 SE 6G12
FORECASTER...TESAR
REQUESTED BY...GRIFFIN
TYPE OF REQUEST...PRESCRIBED
.TAG 2609187.0/BYZ
.DELDT 04/08/26
.FORMATTERVERSION 2.0.0
.EMAIL DDAY@BLM.GOV,RMGRIFFIN@BLM.GOV
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