ACUS11 KWNS 310654
SWOMCD
SPC MCD 310654=20
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 https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7H5lTy5_54RCpQpDydH8HCH6yKjtc0WxheAZGWctkc21xaCEf128Z5IaXku-gMCmXoaba3y6y= WnUn7aHLp86MMqfojY$ 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=20

MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


=3D =3D =3D
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