664
FXUS63 KARX 281100
AFDARX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
600 AM CDT THU MAY 28 2026
KEY MESSAGES
- DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES ARE EXPECTED
THROUGH EARLY NEXT WEEK.
DISCUSSION
ISSUED AT 1231 AM CDT THU MAY 28 2026
TODAY
HIGH PRESSURE WILL BUILD ACROSS THE UPPER MISSISSIPPI RIVER
VALLEY TODAY. IT WILL PROVIDE DRY WEATHER FOR THE REGION. ANY
SHOWERS AND STORMS WILL BE ASSOCIATED WITH THE UPSTREAM TROUGH
IN THE OMEGA HIGH ACROSS WESTERN AND SOUTHERN IOWA. WITH THE
PASSAGE OF THE BACKDOOR COLD FRONT EARLIER THIS MORNING, HIGH
TEMPERATURES WILL RANGE FROM THE MID-70S TO MID-80S.
FRIDAY THROUGH TUESDAY
THE RIDGE ASSOCIATED WITH THE 500 MB OMEGA HIGH WILL BE LOCATED
ACROSS THE REGION. MEANWHILE, AT THE SURFACE, THERE WILL BE A
HIGH LOCATED OVER MICHIGAN. AS A RESULT, OUR WINDS WILL
PRIMARILY RANGE FROM THE NORTHEAST TO SOUTHEAST AT 5 TO 15 MPH.
THESE WINDS WILL CONTINUE TO BRING VERY DRY AIR INTO THE REGION.
WITH HIGH TEMPERATURES IN THE MID- TO UPPER 80S, RELATIVE
HUMIDITIES WILL FALL INTO THE 20S AND 30S EACH AFTERNOON. WITH
THE EXTENDED DRY AND UNUSUALLY WARM CONDITIONS, WE COULD
POTENTIALLY BE LOOKING AT THE BEGINNING OF A FLASH DROUGHT AND
THE POTENTIAL FOR ELEVATED FIRE WEATHER CONCERNS.
AVIATION /12Z TAFS THROUGH 12Z FRIDAY/
ISSUED AT 558 AM CDT THU MAY 28 2026
FEW-SCT HIGH CLOUDS ARE EXPECTED TO CONTINUE THROUGHOUT THE DAY
FOR THOSE SOUTH OF I-90 AND WEST OF THE MISSISSIPPI RIVER,
POSSIBLY BECOMING BKN AT TIMES. EAST TO NORTHEAST WINDS UP TO
15KT THIS MORNING WILL DIMINISH THROUGHOUT THE DAY, BECOMING
5-10KT AND VEERING TO THE SOUTHEAST AS WE HEAD INTO THE
OVERNIGHT HOURS. THERE IS SOME INDICATION OF MIST DEVELOPING
ALONG AND EAST OF THE MISSISSIPPI RIVER TOWARDS THE END OF THE
TAF PERIOD WHICH COULD LEAD TO VISIBILITY REDUCTIONS, BUT LOW
LEVEL DRY AIR AND EXPECTED OVERNIGHT CLOUD COVERAGE WOULD HINDER
HOW WIDESPREAD MIST BECOMES, IF IT FORMS AT ALL. ALL SAID,
CONFIDENCE IN THIS SCENARIO IS NOT HIGH, ONLY AROUND 10% PER THE
28.00Z HREF, A DECREASE IN PROBABILITIES AS COMPARED TO THE
27.12Z RUN.
ARX WATCHES/WARNINGS/ADVISORIES
WI...NONE.
MN...NONE.
IA...NONE.
DISCUSSION...BOYNE
AVIATION...FALKINHAM
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