699
ACUS11 KWNS 310654
SWOMCD
SPC MCD 310654
INZ000-ILZ000-WIZ000-IAZ000-310830-
MESOSCALE DISCUSSION 0303
NWS STORM PREDICTION CENTER NORMAN OK
0154 AM CDT TUE MAR 31 2026
AREAS AFFECTED...EASTERN IOWA AND NORTHERN ILLINOIS
CONCERNING...SEVERE THUNDERSTORM WATCH 77...
VALID 310654Z - 310830Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 77
CONTINUES.
SUMMARY...AN ISOLATED LARGE HAIL/WIND THREAT REMAINS.
DISCUSSION...STORMS WHICH PRODUCED SOME LARGE HAIL AND DAMAGING WIND
GUSTS EARLIER HAVE NOW MOSTLY WEAKENED AND CONGEALED INTO A MASS OF
MOSTLY SUB-SEVERE STORMS. A FEW STRONGER CELLS, SUCH AS THE ONE
CURRENTLY NEAR IOWA CITY, MAY POSE A ISOLATED LARGE HAIL/DAMAGING
WIND THREAT. HOWEVER, THE OVERALL THREAT APPEARS TO BE WANING.
THEREFORE, GIVEN THE REMAINING ISOLATED/MARGINAL THREAT, WATCH 77
WILL LIKELY BE ALLOWED TO EXPIRE AT 08Z, EVEN IF AN ISOLATED THREAT
MAY PERSIST AFTER THIS TIME.
..BENTLEY/MOSIER.. 03/31/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...LOT...ILX...MKX...DVN...
LAT...LON 41629204 42079109 42468961 42588903 42608860 42508796
42538707 41798692 41248787 40958963 40949110 40979194
41239211 41629204
MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
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