Hydrologic Outlook
MTC029-047-301200-

Hydrologic Outlook
National Weather Service Missoula MT
1225 PM MDT Sat Jun 27 2026

What: Widespread moderate rainfall over a prolonged period of time.
Storm total amounts between 1 to 3 inches for valleys and 2 to 4
inches for the mountains.

Where: Flathead and Lake Counties in northwest Montana, including
Glacier National Park.

Timing: Beginning Sunday afternoon, continuing through Monday night.

Significant rainfall totals will bring potential for rapid rises on
streams and creeks, rock and debris slides and runoff issues in poor
drainage areas. Those recreating in the backcountry should take
caution on backcountry roadways for falling debris.  If camping, be
mindful of where you park your RV or pitch your tent. Avoid setting
up near water`s edge, as streams and reservoirs could rise rapidly
and flood your site.

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