Active AlertsElkhorn and Boulder Mountains

What: Flash flooding caused by excessive rainfall continues to be possible.
Where: Portions of central and southwest Montana, including the following areas, in central Montana, Elkhorn and Boulder Mountains. In southwest Montana, Northwest Beaverhead County.
When: Until midnight MDT tonight.
Impacts: Localized heavy rainfall could trigger flash flooding in low-lying and other flood-prone locations.
Additional Details: - Scattered slow moving thunderstorms capable of producing heavy rain within short periods of time. - Norhtwestern Beaverhead County and much of Jefferson County. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.