933
WWUS20 KWNS 271327
SEL8
SPC WW 271327
ILZ000-272100-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 158
NWS STORM PREDICTION CENTER NORMAN OK
830 AM CDT MON APR 27 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND SOUTHERN ILLINOIS
* EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 830 AM UNTIL
400 PM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
TO 2 INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
A TORNADO OR TWO POSSIBLE
SUMMARY...A BOWING LINEAR CLUSTER WILL CONTINUE TO STEADILY MOVE
EASTWARD WITH ADDITIONAL DEVELOPMENT TO ITS SOUTHEAST. LARGE HAIL
AND DAMAGING WINDS ARE THE PRIMARY CONCERNS, ESPECIALLY AS THE AIR
MASS CONTINUES TO WARM/DESTABILIZE ACROSS SOUTHERN AND CENTRAL
ILLINOIS THROUGH LATE MORNING AND AFTERNOON.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES NORTH
NORTHWEST OF QUINCY IL TO 40 MILES EAST SOUTHEAST OF MATTOON IL. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 156...WW 157...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A
FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR
25030.
...GUYER
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