190
FNUS75 KBYZ 261706
FWSBYZ
SPOT FORECAST FOR HIGHLINE UNIT 1 RX...WFS
NATIONAL WEATHER SERVICE BILLINGS MT
1106 AM MDT TUE MAY 26 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 MDT ON MAY 27.
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 A LOW CHANCE (10%) FOR AN ISOLATED SHOWER OR THUNDERSTORM
WEDNESDAY AFTERNOON. THE MAIN THREAT IF ANY SHOWER OR THUNDERSTORM
DEVELOPS IS GUSTY AND ERRATIC WIND GUSTS UP TO 50 MPH. CONDITIONS
WILL REMAIN BREEZY OUT OF THE SOUTHEAST THROUGH FRIDAY MORNING,
WITH GUSTS GENERALLY 30 TO 40 MPH. MINIMUM DAYTIME HUMIDITIES WILL
BE IN THE TEENS THROUGH FRIDAY. COOLER TEMPERATURES, LESS BREEZY
WINDS, AND A BETTER CHANCE FOR PRECIPITATION ARRIVE FOR THE
WEEKEND.
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
CWR.................LESS THAN 5 PERCENT.
CHANCE OF LIGHTNING.10 PERCENT.
MAX TEMPERATURE.....85-89.
MIN HUMIDITY........17-21 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHEAST WINDS 9 TO 18 MPH WITH GUSTS UP TO
30 MPH IN THE MORNING, INCREASING TO TO 18 TO 25
MPH WITH GUSTS UP TO 40 MPH IN THE AFTERNOON.
GUSTY AND ERRATIC WINDS EXPECTED NEAR SHOWERS
AND THUNDERSTORMS IN THE AFTERNOON.
RIDGETOP...........SOUTHEAST 30 TO 40 MPH.
MIXING HEIGHT.......INCREASING TO 10300 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 30 TO 40 MPH.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........54 54 43 43 43 55 55 55 70 70 70
WEATHER COV..... SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW
TSTM COV........ SCH SCH SCH SCH
CHC OF LTNG (%).0 0 0 0 0 0 0 10 10 10 10
TEMP............65 68 72 79 82 84 85 86 86 87 85
RH..............44 42 36 31 27 25 24 22 21 19 19
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..14 14 16 16 18 20 25 25 25 25 22
20 FT WIND GUST.24 24 29 29 30 35 40 40 40 40 36
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MIN TEMPERATURE.....60-64.
MAX HUMIDITY........46-50 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHEAST WINDS 18 TO 25 MPH WITH GUSTS UP TO
40 MPH IN THE EVENING, DECREASING TO 9 TO 18
MPH WITH GUSTS UP TO 35 MPH OVERNIGHT.
RIDGETOP...........SOUTHEAST 30 TO 40 MPH.
MIXING HEIGHT.......DECREASING TO 800 FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTHEAST 20 TO 30 MPH.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........79 79 79 67 67 67 50 50 50 53 53 53
CHC OF LTNG (%).5 0 0 0 0 0 0 0 0 0 0 0
TEMP............85 85 82 78 76 74 72 70 68 67 65 63
RH..............23 21 23 28 31 34 37 39 42 44 48 50
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..22 25 25 22 22 21 20 20 20 20 20 21
20 FT WIND GUST.36 40 40 36 36 35 34 34 34 34 34 35
THURSDAY
SKY/WEATHER.........PARTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....86-90.
MIN HUMIDITY........16-20 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHEAST WINDS 18 TO 25 MPH WITH GUSTS UP TO
40 MPH.
RIDGETOP...........SOUTHEAST 30 TO 40 MPH.
MIXING HEIGHT.......INCREASING TO 7100 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 20 TO 30 MPH.
TIME (MDT) 6 AM 9 AM NOON 3 PM
SKY (%).........55 41 35 49
TEMP............63 70 83 86
RH..............52 43 25 20
20 FT WIND......SE 21G35 SE 25G40 SE 25G40 SE 24G38
FORECASTER...ARCHER
REQUESTED BY...MICHAEL COBARRUBIAS
TYPE OF REQUEST...PRESCRIBED
.TAG 2614478.0/BYZ
.DELDT 05/26/26
.FORMATTERVERSION 2.0.0
.EMAIL JGIBSON@BLM.GOV,MTMCC@FIRENET.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page