421
WWUS20 KWNS 280947
SEL1
SPC WW 280947
IAZ000-MNZ000-281400-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 411
NWS STORM PREDICTION CENTER NORMAN OK
450 AM CDT SUN JUN 28 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHWEST INTO NORTHERN IOWA
SOUTHWEST INTO SOUTHERN MINNESOTA
* EFFECTIVE THIS SUNDAY MORNING FROM 450 AM UNTIL 900 AM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE
SUMMARY...A SQUALL LINE WILL MOVE INTO THE WATCH AREA EARLY THIS
MORNING AND LIKELY MOVE EAST ACROSS THE WATCH. SCATTERED DAMAGING
GUSTS (60 TO 70 MPH) ARE POSSIBLE WITH THE MORE INTENSE PORTIONS OF
THE SQUALL LINE.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST SOUTHWEST
OF WORTHINGTON MN TO 10 MILES EAST SOUTHEAST OF MASON CITY IA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).
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 410...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR
27035.
...SMITH
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