019
FNUS75 KBYZ 181011
FWSBYZ
SPOT FORECAST FOR YELLOWSTONE FLOWDOWN EXERCISE...DES
NATIONAL WEATHER SERVICE BILLINGS MT
411 AM MDT WED MAR 18 2026
FORECAST IS BASED ON FORECAST START TIME OF 0800 MDT ON MARCH 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
CLOUD WITH A SLIGHT CHANCE FOR A LIGHT RAIN SHOWER UNTIL 10AM.
BECOMING PARTLY CLOUDY, WARM, AND DRY WITH GUSTY WEST WINDS THIS
AFTERNOON. PERIODS OF CLOUDS EXPECTED TONIGH WITH WINDS DIMINISHING
MID EVENING. THURSDAY WILL BE WARM (NEAR RECORD HIGH) AND DRY AGAIN WITH
TEMPERATURES NEAR 80 DEGREES. WESTERLY WINDS WILL GUST IN THE 30S
DURING THE AFTERNOON HOURS. CHAMBERS
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF LIGHT RAIN SHOWERS
EARLY IN THE MORNING.
CHANCE OF PCPN......15 PERCENT.
MAX TEMPERATURE.....69-73.
MIN HUMIDITY........34-38 PERCENT.
SURFACE WINDS (MPH).SOUTHWEST WIND 6 TO 12 MPH IN THE MORNING BECOMING
WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 40
MPH IN THE AFTERNOON.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....38-42.
MAX HUMIDITY........77-81 PERCENT.
SURFACE WINDS (MPH).WEST WINDS 10 TO 20 MPH WITH GUSTS UP TO 30 MPH IN
THE EARLY EVENING, BECOMING SOUTHWEST 6 TO 12 MPH
LATE EVENING AND OVERNIGHT.
THURSDAY
SKY/WEATHER.........PARTLY SUNNY THEN BECOMING SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....76-80.
MIN HUMIDITY........25-29 PERCENT.
SURFACE WINDS (MPH).SOUTHWEST WINDS 6 TO 12 MPH IN THE MORNING, BECOMING
WEST WINDS 10 TO 20 MPH WITH GUSTS TO 32 MPH IN THE
AFTERNOON.
FORECASTER...CHAMBERS
REQUESTED BY...CORY CHEGUIS
TYPE OF REQUEST...HAZMAT
.TAG 2606207.0/BYZ
.DELDT 03/18/26
.FORMATTERVERSION 2.0.0
.EMAIL C.CHEGUIS@CUSTERCOUNTYMT.GOV
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