522
WWUS20 KWNS 122051
SEL0
SPC WW 122051
COZ000-NEZ000-SDZ000-WYZ000-130500-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 410
NWS STORM PREDICTION CENTER NORMAN OK
255 PM MDT THU JUN 12 2025
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHEAST COLORADO
WESTERN AND NORTHERN NEBRASKA
SOUTHERN SOUTH DAKOTA
SOUTHEAST WYOMING
* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 255 PM UNTIL
1100 PM MDT.
* PRIMARY THREATS INCLUDE...
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5
INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
A TORNADO OR TWO POSSIBLE
SUMMARY...SEVERE THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP
REGIONALLY MAINLY NEAR A SOUTHWEST/NORTHEAST-ORIENTED FRONT, WITH AN
UNSTABLE AIR MASS AND MODERATELY STRONG WIND PROFILES SUPPORTING
SUPERCELLS AND HAIL/WIND POTENTIAL, AND POSSIBLY EVEN A BRIEF
TORNADO.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES EAST SOUTHEAST
OF CHAMBERLAIN SD TO 75 MILES SOUTH SOUTHWEST OF TORRINGTON WY. 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.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A
FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR
26025.
...GUYER
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