283
FXUS63 KUNR 041836
AFDUNR
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
1236 PM MDT SAT APR 4 2026
KEY MESSAGES
-UNSETTLED WESTERLY FLOW WILL THEN PERSIST THROUGH NEXT WEEK WITH
FLUCTUATING TEMPERATURES
-COOL FRONT WILL SETTLE IN THE AREA SUNDAY/SUNDAY NIGHT WITH MUCH
COOLER WEATHER FOR MONDAY
-MILD AGAIN TUESDAY AND WEDNESDAY, COOLER TOWARD THE END OF NEXT
WEEK
DISCUSSION
(THIS AFTERNOON THROUGH FRIDAY)
ISSUED AT 1130 AM MDT SAT APR 4 2026
WESTERN CONUS RIDGE WILL REMAIN IN PLACE THROUGH MID WEEK AS
PERIODIC RIDGE TOPPING IMPULSES ADVECT INTO THE NORTHERN PLAINS.
WAA AND ASSOCIATE HEIGHT RISES ONGOING TODAY. THIS HAS SUPPORT A
FEW SPRINKLES OR FLURRIES. SKIES ARE EXPECTED TO CLEAR WEST TO
EAST TODAY WITH WARMER CONDS. EXPECT HIGHS IN THE 40S AND 50S
AGAIN SUNDAY, COOLEST OVER THE DEEPER SNOW PACK ACROSS NW SD.
BACKDOOR COLD FRONT WILL SLIDE INTO THE AREA LATER SUNDAY INTO
MONDAY, COOLING THINGS DOWN FOR MONDAY. BAROCLINIC ZONE WILL STALL
OVER THE REGION SUPPORTING SOME CHANCES FOR LIGHT RAIN OR SNOW
LATE SUNDAY NIGHT INTO MONDAY. SOME FOG WILL ALSO BE POSSIBLE
ACROSS NW SD AND THE NORTHERN AND EASTERN BH FOOTHILLS SUNDAY
NIGHT INTO MONDAY MORNING. A CLIPPER SYSTEM WILL SUPPORT MUCH
WARMER WEATHER BY TUES VIA STRONG FRONTSIDE WAA AS HIGHS WILL
REACH THE 50S AND 60S, WITH A FEW 70S POSSIBLE OVER THE SW THIRD.
EXPECT A COOL DOWN TOWARD THE END OF NEXT WEEK INITIATING VIA A
STRONGER COLD FRONT IN THE WED-THUR PERIOD PER THE AFOREMENTIONED
CLIPPER. VARYING DEGREES OF WESTERN CONUS TROUGHING INDICATED IN
MODEL SOLUTIONS SUPPORTS LOW FORECAST CONFIDENCE TOWARD NEXT
WEEKEND.
AVIATION
(FOR THE 18Z TAFS THROUGH 18Z SUNDAY)
ISSUED AT 1236 PM MDT SAT APR 4 2026
VFR CONDITIONS ARE EXPECTED THROUGH THE TAF PERIOD.
UNR WATCHES/WARNINGS/ADVISORIES
SD...NONE.
WY...NONE.
DISCUSSION/KEY MESSAGES...JC
AVIATION...DYE
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