* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Northeastern Gallatin County in south central Montana...
* WHEN...Until 845 PM MDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS... - At 547 PM MDT, Doppler radar indicated heavy rain with rainfall rates in excess of 1 inch per hour due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Mainly rural areas of Northeastern Gallatin County. - http://www.weather.gov/safety/flood