167
FNUS75 KBYZ 162307
FWSBYZ
SPOT FORECAST FOR BIG GOOSE CYN HELICOPTER...USDA FOREST SERVICE
NATIONAL WEATHER SERVICE BILLINGS MT
507 PM MDT TUE JUN 16 2026
FORECAST IS BASED ON FORECAST START TIME OF 0900 MDT ON JUNE 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
WHILE MOSTLY DRY CONDITIONS WILL PREVAIL THURSDAY UNDER PARTLY
SUNNY SKIES, THERE IS A LOW (10 PERCENT) CHANCE OF A SHOWER DURING
THE DAY. OTHERWISE, WINDS NEAR THE TOP OF THE CANYON LOOK TO BE
OUT OF THE NORTHWEST WITH WIND GUSTS GENERALLY IN THE TEENS MPH.
CURRENTLY, THE CHANCE OF SEEING A 20 MPH OR GREATER WIND GUST IS
AROUND 10 PERCENT IN THE MORNING AND 30 PERCENT BY THE AFTERNOON.
WINDS FARTHER DOWN THE CANYON WILL BE LIGHTER, AND MAY ACTUALLY
BECOME TERRAIN DRIVEN (UP-SLOPE/VALLEY DURING THE DAY) NEAR THE
BASE AND MID- ELEVATIONS OF THE CANYON. LA
THURSDAY
SKY/WEATHER.........PARTLY SUNNY.
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....54-58.
MIN HUMIDITY........40-44 PERCENT.
SURFACE WINDS (MPH).NORTHWEST WINDS 6 TO 12 MPH. GUSTS UP TO 20 MPH
LATE IN THE AFTERNOON.
RIDGETOP...........NORTHWEST AROUND 8 TO 12 MPH. GUSTS UP TO 20 MPH
LATE IN THE AFTERNOON.
TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........17 17 17 42 42 42 33 33 33
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10
TEMP............43 46 48 50 52 54 55 56 56
RH..............55 53 53 53 50 46 43 41 41
SURFACE WND DIR.NW NW NW NW NW NW NW NW NW
SURFACE WND SPD.8 8 8 9 9 10 10 10 10
SURFACE WND GST.12 12 12 15 15 17 18 18 18
FORECASTER...ARENDS
REQUESTED BY...JON WARDER
TYPE OF REQUEST...OTHER
.TAG 2615652.0/BYZ
.DELDT 06/16/26
.FORMATTERVERSION 2.0.0
.EMAIL JONATHAN.WARDER@USDA.GOV
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