Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

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Last Map Update: Fri, Aug 14, 2026 at 11:06:42 am MDT

Watches, Warnings & Advisories

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National Weather Service Great Falls, MT

Flash Flood Warning

Flash Flood Watch

Red Flag Warning

Flood Advisory

Air Quality Alert

Hydrologic Outlook

Flash Flood and Heavy Rain Risk Today

Thunderstorms capable of heavy rainfall are expected across western Montana and central Idaho today from 10 AM to 9 PM. The primary hazard will be slow-moving storms that repeatedly track over the same areas, which could quickly lead to localized flash flooding especially in urban areas, steep terrain, and near wildfire burn scars. Secondary threats include localized wind gusts up to 45 mph and small hail. Never drive through flooded roadways. If you encounter flooded roads, turn around, don't drown.