536
WWUS20 KWNS 120720
SEL3
SPC WW 120720
IAZ000-NEZ000-121500-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 573
NWS STORM PREDICTION CENTER NORMAN OK
220 AM CDT WED AUG 12 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN INTO CENTRAL IOWA
CENTRAL INTO EASTERN NEBRASKA
* EFFECTIVE THIS WEDNESDAY MORNING FROM 220 AM UNTIL 1000 AM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
TO 80 MPH POSSIBLE
ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE
SUMMARY...A LONG-LIVED AND COMPACT SQUALL LINE WILL CONTINUE TO THE
EAST-SOUTHEAST INTO THE WATCH DURING THE OVERNIGHT AND MORNING.
SCATTERED SEVERE GUSTS 60 TO 80 MPH WILL BE THE PRIMARY HAZARD.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTH
SOUTHWEST OF ONEILL NE TO 15 MILES SOUTH SOUTHEAST OF DES MOINES IA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).
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 572...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR
29040.
...SMITH
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