287
FXUS63 KFSD 190857
AFDFSD
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SIOUX FALLS SD
257 AM CST FRI DEC 19 2025
KEY MESSAGES
- EXTENDED PERIOD OF CALMER WEATHER EXPECTED THROUGH THE
WEEKEND AND WELL INTO THE CHRISTMAS HOLIDAY WEEK.
- SOUTHERLY WINDS WILL GUST TO AROUND 25 TO 30 MPH TODAY WITH
NORTHWEST WINDS GUSTING TO 25 TO 35 MPH ON SATURDAY.
DISCUSSION
ISSUED AT 255 AM CST FRI DEC 19 2025
STRONG WESTERLY FLOW ALOFT WILL KEEP MOISTURE TO A MINIMUM ACROSS
THE AREA INTO THE WEEKEND. A WAVE WILL PASS BY TO THE NORTH TODAY
INTO TONIGHT, BUT FOR NOW THE MAIN EFFECTS WILL BE GUSTY WINDS AND A
WIND SHIFT TONIGHT. SOUTHERLY WINDS WILL GUST TO AROUND 25-30 MPH
TODAY, THEN TURN TO THE NORTHWEST TONIGHT. THIS RAPID RETURN TO
SOUTHERLY FLOW WILL BRING MILD TEMPERATURES BACK INTO THE AREA, EVEN
WITH THE RELATIVELY COLD START TO THE MORNING. WITH ONLY A LULL IN
THE WINDS THIS EVENING BEFORE THE FRONT MOVES THROUGH, THE EXPECTED
CLOUD COVER AND WIND WILL KEEP TEMPERATURES MUCH MILDER AND ONLY
SEEM THEM FALL INTO THE 20S TONIGHT.
SATURDAY WILL BE A BREEZY DAY AS THE WAVE PASSES BY TO THE NORTH.
GUSTS SHOULD BE ABOUT 25-35 MPH WITH THE STRONGER WINDS NORTH OF I-
90. WHILE SOME COOLER AIR WILL WORK INTO THE AREA TEMPERATURES WILL
REMAIN NEAR TO ABOVE NORMAL.
SUNDAY WILL SEE RETURN FLOW SET UP WITH A CONTINUATION OF NEAR TO A
BIT ABOVE NORMAL TEMPERATURES. A WAVE WILL MOVE BY ON MONDAY, WHICH
INCREASES WESTERLY FLOW WITH INCREASED TEMPERATURES ALSO EXPECTED.
TEMPERATURES WILL BE A SOLID 10 TO 20 DEGREES ABOVE NORMAL.
BROAD UPPER LEVEL RIDGING WILL BUILD INTO THE AREA TUESDAY INTO
CHRISTMAS DAY, LIKELY SUPPORT WELL ABOVE NORMAL TEMPERATURES AS WELL
AS MOSTLY DRY CONDITIONS. SOME HINTS OF SOME UPPER LEVEL ENERGY
SPREADING ACROSS THE NORTHERN AND CENTRAL PLAINS ON CHRISTMAS DAY,
BUT NOT MUCH AGREEMENT AT THIS TIME.
AVIATION /06Z TAFS THROUGH 06Z SATURDAY/
ISSUED AT 1044 PM CST THU DEC 18 2025
NORTHWEST WINDS WILL CONTINUE TO TAPER OFF, BECOMING LIGHT AND
VARIABLE OVERNIGHT. MOSTLY CLEAR AND VFR CONDITIONS WILL PREVAIL. BY
DAYBREAK WINDS WILL BE SOUTHERLY AND INCREASE THROUGH THE MORNING.
AFTERNOON GUSTS OF 22-27 KTS WILL BE WIDESPREAD ACROSS THE REGION.
WINDS DECREASE AFTER SUNSET.
NEAR THE END OF THE PERIOD THERE IS A CHANCE FOR LLWS AT KSUX, BUT
CONFIDENCE WAS TOO LOW TO INCLUDE IN THE TAF AT THIS TIME.
FSD WATCHES/WARNINGS/ADVISORIES
SD...NONE.
MN...NONE.
IA...NONE.
NE...NONE.
DISCUSSION...08
AVIATION...AJP
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page