649
WWUS20 KWNS 270627
SEL8
SPC WW 270627
MIZ000-MNZ000-WIZ000-LSZ000-271400-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 518
NWS STORM PREDICTION CENTER NORMAN OK
130 AM CDT MON JUL 27 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
UPPER MICHIGAN
NORTHERN MINNESOTA
NORTHERN WISCONSIN
LAKE SUPERIOR
* EFFECTIVE THIS MONDAY MORNING FROM 130 AM UNTIL 900 AM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
A TORNADO OR TWO POSSIBLE
SUMMARY...SCATTERED THUNDERSTORMS WILL CONTINUE TO INCREASE IN
COVERAGE AND INTENSITY OVERNIGHT AS THEY MOVED SOUTHEASTWARD
REGIONALLY. LARGE HAIL WILL THE MOST COMMON CONCERN OVERNIGHT,
ALTHOUGH DAMAGING WIND POTENTIAL COULD INCREASE TOWARD DAWN AND
BEYOND IF STORMS BEGIN TO CLUSTER AND ORGANIZE.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 80 MILES WEST OF
INTERNATIONAL FALLS MN TO 15 MILES SOUTH SOUTHEAST OF IRON MOUNTAIN
MI. 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.
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 600. MEAN STORM MOTION VECTOR
30025.
...GUYER
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