National Weather Service

Local Storm Report
Issued by NWS Missoula, MT

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278
NWUS55 KMSO 172303
LSRMSO

Preliminary Local Storm Report
National Weather Service Missoula MT
503 PM MDT Fri Jul 17 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0502 PM     Flash Flood      1 SE Drummond           46.66N 113.13W
07/17/2026                   Granite            MT   Emergency Mngr

            Flooding across I-90 WB lane between mile
            marker 155-156, east of Drummond MT.


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BEC