Monsoon Moisture Brings Flash Flood Watch and Lake Wind Advisory to Montana
Monsoon Moisture Brings Flash Flood Watch and Lake Wind Advisory to Montana
US · Published Aug 13, 2026
Monsoon moisture is moving into Montana, bringing increased chances of thunderstorms and localized heavy rainfall.
A Flash Flood Watch is in effect for Thursday evening, particularly for the Horse Gulch burn scar, where heavy rain could lead to flash flooding and debris flows.

Impact & Risks

The Flash Flood Watch poses a significant risk to areas affected by recent wildfires, particularly the Horse Gulch burn scar, where heavy rain could cause flash flooding and debris flows. The Lake Wind Advisory warns of hazardous conditions on Flathead Lake and smaller lakes in the Flathead and Mission Valley regions, with strong winds creating rough waters. Additionally, wildfire smoke has led to poor air quality in several counties, posing health risks, especially for sensitive groups. Residents are advised to limit outdoor activities and monitor local updates.

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