Flood Watch

* WHAT...Flooding caused by excessive rainfall is possible.

* WHERE...The Canyon Ferry Area, Helena Valley, and Meagher County Valleys in Central Montana

* WHEN...From 6 PM MDT this evening through Saturday afternoon.

* IMPACTS...Excessive runoff may result in flooding of low-lying and flood-prone locations.

* ADDITIONAL DETAILS... - Showers and thunderstorms capable of producing hourly rainfall rates of between 0.25 inch to 0.5 inch are possible. - Some locations impacted include Helena, Townsend, and White Sulphur Springs - http://www.weather.gov/safety/flood