454
NWUS55 KTFX 190017
LSRTFX
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
517 PM MST THU DEC 18 2025
.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.
..REMARKS..
0200 PM HIGH SUST WINDS 2 ENE HELENA 46.60N 111.99W
12/17/2025 M42 MPH LEWIS AND CLARK MT ASOS
ASOS STATION HELENA AIRPORT KHLN MEASURED
SUSTAINED WINDS AVERAGED BETWEEN 1035 AM AND
2 PM OF 42 MPH. DATA WAS MISSING AFTER 200
PM.
AM
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