* 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