505
WWUS20 KWNS 302136
SEL7
SPC WW 302136
NDZ000-SDZ000-310400-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 637
NWS STORM PREDICTION CENTER NORMAN OK
440 PM CDT SUN AUG 30 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL NORTH DAKOTA
NORTH-CENTRAL SOUTH DAKOTA
* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 440 PM UNTIL
1100 PM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75
MPH LIKELY
ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
SUMMARY...A SQUALL LINE WILL MOVE EAST ACROSS THE NORTHERN PORTION
OF THE SEVERE THUNDERSTORM WATCH WITH A MIX OF CELLS AND LINE
SEGMENTS FARTHER SOUTH NEAR THE DAKOTAS' STATE BORDER. THE MAIN
THREATS WITH THE STRONGER STORMS WILL BE SEVERE GUSTS 60 TO 75 MPH
AND PERHAPS ISOLATED LARGE HAIL WITH THE STRONGER CORES.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50
STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH NORTHEAST
OF MINOT ND TO 45 MILES SOUTHWEST OF MOBRIDGE SD. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU7).
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 636...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65 KNOTS. A
FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR
25020.
...SMITH
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