881
ACUS11 KWNS 302354
SWOMCD
SPC MCD 302353
INZ000-ILZ000-010100-
MESOSCALE DISCUSSION 0627
NWS STORM PREDICTION CENTER NORMAN OK
0653 PM CDT WED APR 30 2025
AREAS AFFECTED...PARTS OF SOUTHEAST ILLINOIS INTO SOUTHERN INDIANA
CONCERNING...TORNADO WATCH 200...
VALID 302353Z - 010100Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 200 CONTINUES.
SUMMARY...A LOCALLY FAVORABLE TORNADO CORRIDOR IS EVIDENT FROM PARTS
OF SOUTHEASTERN ILLINOIS INTO SOUTHERN INDIANA IN THE NEAR-TERM --
WITHIN TORNADO WATCH 200.
DISCUSSION...SEVERAL DISCRETE MINI SUPERCELL STRUCTURES ARE EVOLVING
ALONG AN EAST/WEST-ORIENTED WARM FRONT FROM SOUTHEAST IL INTO
SOUTHERN IN. AHEAD OF THESE STORMS, THE IND VWP IS SAMPLING A
CLOCKWISE-CURVED HODOGRAPH WITH AROUND 250 M2/S2 0-1KM SRH ALONG THE
FRONT (BASED ON OBSERVED STORM MOTION). GIVEN THE NARROW OVERLAP OF
THIS BOOSTED SRH AND SURFACE-BASED INSTABILITY, A LOCALLY FAVORABLE
TORNADO CORRIDOR IS EVIDENT IN THE NEAR-TERM.
..WEINMAN.. 04/30/2025
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...LMK...IND...ILX...LSX...
LAT...LON 39518875 39458783 39268565 39018559 38758578 38688634
38768757 38918912 39128922 39388904 39518875
MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN
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