545
WWUS20 KWNS 130628
SEL0
SPC WW 130628
IAZ000-NEZ000-131300-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 580
NWS STORM PREDICTION CENTER NORMAN OK
130 AM CDT THU AUG 13 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN IOWA
EASTERN NEBRASKA
* EFFECTIVE THIS THURSDAY MORNING FROM 130 AM UNTIL 800 AM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 85
MPH LIKELY
ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE
SUMMARY...A SEVERE LINEAR THUNDERSTORM CLUSTER WILL CONTINUE EAST
INTO THE WATCH AREA DURING THE OVERNIGHT AND MOVE EAST INTO WESTERN
IOWA DURING THE EARLY MORNING. SCATTERED SEVERE GUSTS 60 TO 85 MPH
ARE EXPECTED WITH THE MORE INTENSE PORTIONS OF THE SQUALL LINE.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST OF
COLUMBUS NE TO 65 MILES EAST SOUTHEAST OF DENISON IA. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU0).
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 579...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 75 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR
27040.
...SMITH
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