546
WWUS20 KWNS 172128
SEL2
SPC WW 172128
MTZ000-180400-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 522
NWS STORM PREDICTION CENTER NORMAN OK
330 PM MDT THU JUL 17 2025
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHERN MONTANA
* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 330 PM UNTIL
1000 PM MDT.
* PRIMARY THREATS INCLUDE...
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 65 MPH POSSIBLE
SUMMARY...THUNDERSTORMS WILL CONTINUE TO DEVELOP AND INTENSIFY
ACROSS NORTH-CENTRAL MONTANA THIS AFTERNOON AND TRACK SOUTHEASTWARD
ACROSS THE WATCH AREA. A FEW SUPERCELLS ARE EXPECTED, CAPABLE OF
LARGE HAIL AND DAMAGING WIND GUSTS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES NORTH
NORTHWEST OF GREAT FALLS MT TO 50 MILES SOUTHEAST OF GLASGOW MT. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).
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 521...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 55 KNOTS. A
FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR
28030.
...HART
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