870
FXUS63 KUNR 012329
AFDUNR
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
429 PM MST SUN MAR 1 2026
KEY MESSAGES
-MILD MOST OF THIS WEEK WITH PAC FLOW
-TWO SYSTEMS WILL IMPACT THE REGION BRINGING PRECIP CHANCES, ONE
MONDAY INTO TUES, AND THE OTHER THURSDAY INTO FRIDAY
DISCUSSION
(THIS AFTERNOON THROUGH SATURDAY)
ISSUED AT 1103 AM MST SUN MAR 1 2026
MILD SPLIT FLOW CAN BE EXPECTED MOST OF THIS WEEK. WARM PAC AIR
WILL DOMINATE THE WEATHER AS ARCTIC AIR SHIFTS BACK NORTHEAST.
STALLED FRONTAL BOUNDARY WILL LIFT BACK NORTHEAST THROUGH MONDAY,
AS A CENTRAL ROCKIES UPPER TROUGH MOVES EAST INTO THE CENTRAL
PLAINS. THE NORTHERN PERIPHERY OF THIS SYSTEM WILL CLIP THE
SOUTHERN THIRD OF THE FA LATER MONDAY INT TUES, SUPPORTING MAINLY
RAIN CHANCES THERE. THERE IS A SMALL PROB FOR FREEZING RAIN ON THE
SD PLAINS SUBFREEZING TEMPS AND PRECIP TIMES TOGETHER MONDAY
NIGHT, ALBEIT SMALL. SHARP CUTOFF TO PRECIP IN THE NORTHERN END OF
THE SYSTEM GIVEN VERY DRY PROFILES AND WEAK MOISTURE TRANSPORT.
MILD WEATHER WILL CONTINUE THROUGH WED, THE WARMEST DAY OF THE
WEEK. GIVEN SUNNY SKIES, BREEZY WINDS AND WARM PROFILES, EXPECT
HIGHS WELL INTO THE 60S MOST PLACES, WITH LOW 70S ON THE THE
PLAINS EAST OF THE BH. ANOTHER STRONGER UPPER TROUGH WILL SHIFT
INTO THE REGION THUR WITH AN ASSOCIATED COLD FRONT. THIS SYSTEM
WILL BRING A GOOD CHANCE OF RAIN AND SOME SNOW TO THE REGION. AT
THIS TIME, MAINLY RAIN CAN BE EXPECTED OUTSIDE OF THE BH WHERE
SOME ACCUMS ARE POSSIBLE. AFTER A COOLER FRIDAY, WARMER AIR WILL
MOVE BACK INTO THE REGION WITH MILD AND DRY WEATHER ON TRACK FOR
NEXT WEEKEND.
AVIATION
(FOR THE 00Z TAFS THROUGH 00Z MONDAY EVENING)
ISSUED AT 429 PM MST SUN MAR 1 2026
VFR CONDITIONS ARE EXPECTED THROUGH THE VALID TAF FORECAST
PERIOD.
UNR WATCHES/WARNINGS/ADVISORIES
SD...NONE.
WY...NONE.
DISCUSSION/KEY MESSAGES...JC
AVIATION...HELGESON
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