683
NWUS55 KMSO 300154
LSRMSO
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
754 PM MDT FRI MAY 29 2026
.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.
..REMARKS..
0700 PM DEBRIS FLOW 2 ESE EDDY 47.55N 115.10W
05/29/2026 SANDERS MT PUBLIC
NEARLY 2 INCHES OF RAIN FELL IN 1.5 HOURS,
TRIGGERING MULTIPLE MUDSLIDES ON THE TERRAIN
NORTH OF HIGHWAY 200. THIS CAUSED A
ROCKSLIDE THAT DROPPED A BOULDER THE SIZE OF
A SMALL CAR ONTO THE ROADWAY BETWEEN MILE
MARKERS 63 AND 64.
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