161
FNUS75 KBYZ 091757
FWSBYZ
SPOT FORECAST FOR HI LINE...USWFS
NATIONAL WEATHER SERVICE BILLINGS MT
1157 AM MDT THU APR 9 2026
FORECAST IS BASED ON IGNITION TIME OF 1400 MDT ON APRIL 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
CORRECTED FORECAST TO INCLUDE THE EXTENDED FORECAST PERIOD
DISCUSSION
WARM AND MOSTLY DRY CONDITIONS ARE FORECAST INTO SATURDAY
AFTERNOON OVER THE BURN SITE. A SYSTEM WILL BRING A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE MID TO LATE AFTERNOON. THE
MAIN IMPACTS WITH ANY STORMS WILL BE GUSTY AND ERRATIC WINDS. THE
CHANCE OF A WETTING RAIN IS GENERALLY 15 PERCENT OR LESS THROUGH
SUNDAY. EXPECT STRONG MIXING BOTH SATURDAY AND SUNDAY AFTERNOON.
CONDITIONS ON SUNDAY WON'T BE QUITE AS WARM AS SATURDAY, ALONG
WITH SLIGHTLY HIGHER MINIMUM RH VALUES IN THE MID 20S PERCENT.
MONDAY LOOKS TO HAVE TEMPERATURES NEAR NORMALS, IN THE 50SF.
THERE IS CURRENTLY A MODERATE TO HIGH CHANCE OF PRECIPITATION
ON MONDAY, WITH A 50% CHANCE OF A WETTING RAIN.
MATOS
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON.
CWR.................LESS THAN 10 PERCENT.
CHANCE OF LIGHTNING.20 PERCENT.
MAX TEMPERATURE.....76-80.
MIN HUMIDITY........17-22 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE
AFTERNOON.
RIDGETOP...........SOUTHWEST AROUND 10 MPH.
MIXING HEIGHT.......INCREASING TO 10000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 16 TO 20 MPH.
TIME (MDT) 2PM 3PM 4PM 5PM
SKY (%).........41 44 44 44
WEATHER COV.....SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW
TSTM COV........ SCH SCH SCH
CHC OF LTNG (%).10 20 20 20
TEMP............77 77 77 77
RH..............21 18 17 20
20 FT WIND DIR..SW SW SW SW
20 FT WIND SPD..7 8 9 8
20 FT WIND GUST.12 14 14 14
SATURDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS
EARLY IN THE EVENING. CHANCE OF RAIN SHOWERS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS
OVERNIGHT.
CWR.................15 PERCENT.
CHANCE OF LIGHTNING.15 PERCENT.
MIN TEMPERATURE.....43-47.
MAX HUMIDITY........68-72 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 5 TO 8 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING.
RIDGETOP...........WEST UP TO 10 MPH.
MIXING HEIGHT.......DECREASING TO 100 FT AGL OVERNIGHT.
TRANSPORT WINDS.....WEST 12 TO 17 MPH.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........62 62 62 62 62 62 58 58 58 57 57 57
WEATHER COV.....CHC CHC CHC CHC CHC CHC SCH SCH SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........SCH SCH SCH
CHC OF LTNG (%).20 20 20 10 10 10 10 10 10 0 0 0
TEMP............74 70 64 59 57 55 54 52 50 49 47 46
RH..............25 32 41 49 55 59 62 64 65 66 68 69
20 FT WIND DIR..W W W SW SW SW W W W W W W
20 FT WIND SPD..7 7 6 6 6 6 6 6 6 7 7 7
20 FT WIND GUST.12 11 11 11 11 11 11 11 11 13 13 13
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON.
CWR.................LESS THAN 10 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MAX TEMPERATURE.....67-71.
MIN HUMIDITY........24-30 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH IN
THE LATE MORNING AND AFTERNOON.
RIDGETOP...........WEST AROUND 10 MPH, GUSTS AROUND 20 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......INCREASING TO 9300 FT AGL LATE IN THE MORNING.
TRANSPORT WINDS.....WEST 13 TO 16 MPH.
TIME (MDT) 6 AM 9 AM NOON 3 PM
SKY (%).........32 21 38 38
WEATHER COV..... S CHC S CHC
WEATHER TYPE....NONE NONE RNSHWR RNSHWR
TSTM COV........
CHC OF LTNG (%).0 0 10 10
TEMP............46 53 65 69
RH..............68 55 35 26
20 FT WIND......W 8G13 W 9G16 W 10G18 NW 8G16
FORECAST DAYS 3 THROUGH 5
MONDAY
COOLER. MOSTLY CLOUDY WITH SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE MID 50S. NORTH WINDS
AROUND 9 MPH.
TUESDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND CHANCE OF SNOW SHOWERS.
LOWS IN THE MID 30S. HIGHS IN THE MID 50S. NORTH WINDS AROUND
9 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE MID 60S.
SOUTHWEST WINDS AROUND 6 MPH.
FORECASTER...MATOS
REQUESTED BY...JARID GIBSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2609200.0/BYZ
.DELDT 04/09/26
.FORMATTERVERSION 2.0.0
.EMAIL JGIBSON@BLM.GOV
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