821
FXUS63 KUNR 211727
AFDUNR
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
1127 AM MDT TUE OCT 21 2025
KEY MESSAGES
- DRY WEATHER AND A GRADUAL WARMING TREND FOR THE REST OF THE WEEK
DISCUSSION
(TODAY THROUGH MONDAY)
ISSUED AT 114 AM MDT TUE OCT 21 2025
WATER VAPOR IMAGERY SHOWS THE UPPER LOW NOW CROSSING MN, WITH
NORTHWEST FLOW ACROSS THE CWA. A WAVE IS ROUNDING THE BACKSIDE OF
THE LOW ACROSS THE EASTERN DAKOTAS, WHERE GUSTS OVER 50 MPH ARE
OCCURRING. THE STRONGEST WINDS ACROSS THE CWA AT THIS TIME ARE OVER
NORTHWEST TO CENTRAL SD (GUSTS TO 30-35 MPH), BUT THESE WINDS WILL
CONTINUE TO WEAKEN THROUGH THE EARLY MORNING HOURS. UPPER RIDGING
WILL BUILD ACROSS THE REGION IN GENERAL, BUT THERE IS A WAVE
CROSSING THE NORTHERN ROCKIES. THIS WAVE WILL CONTINUE WITHIN THE NW
FLOW ALOFT, PUSHING INTO THE DAKOTAS THIS AFTERNOON, BRINGING BREEZY
CONDITIONS OVER NW SD. HIGHS TODAY WILL BE IN THE 50S AND 60S. DRY
WEATHER TODAY WILL CONTINUE THROUGH THE NEXT SEVERAL DAYS, AS UPPER
RIDGING DOMINATES THE NORTHERN ROCKIES REGION. TEMPERATURES WILL BE
NEAR TO SLIGHTLY ABOVE SEASONAL AVERAGES, THEN TEMPS MAY REACH INTO
THE 70S ACROSS PORTIONS OF THE AREA LATE IN THE WEEK. THE NEXT
CHANCE FOR PRECIPITATION WILL BE EARLY NEXT WEEK AS A STORM SYSTEM
APPROACHES.
AVIATION
(FOR THE 18Z TAFS THROUGH 18Z WEDNESDAY)
ISSUED AT 1126 AM MDT TUE OCT 21 2025
VFR CONDITIONS ARE EXPECTED THROUGH THE PERIOD. GUSTY
WEST/NORTHWEST WINDS ARE EXPECTED ON THE OPEN PLAINS THIS
AFTERNOON, DIMINISHING EARLY THIS EVENING.
UNR WATCHES/WARNINGS/ADVISORIES
SD...NONE.
WY...NONE.
DISCUSSION/KEY MESSAGES...13
AVIATION...15
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