940
WWUS20 KWNS 281913
SEL1
SPC WW 281913
MTZ000-290300-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 551
NWS STORM PREDICTION CENTER NORMAN OK
115 PM MDT MON JUL 28 2025
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL MONTANA
* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 115 PM UNTIL
900 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
SUMMARY...SCATTERED THUNDERSTORM DEVELOPMENT IS EXPECTED THROUGH THE
AFTERNOON, INCLUDING THE POTENTIAL FOR A FEW SUPERCELLS. LARGE HAIL
OF 1-2.5 INCHES IN DIAMETER WILL BE POSSIBLE, WHILE SEVERE OUTFLOW
GUSTS OF 60-70 MPH WILL BE POSSIBLE WITH UPSCALE GROWTH INTO A
CLUSTER OR TWO THIS EVENING.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTHWEST OF
HELENA MT TO 75 MILES EAST OF LEWISTOWN MT. 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 550...
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 450. MEAN STORM MOTION VECTOR
28020.
...THOMPSON
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