This story will be updated as changes to the forecast are made.

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A flash flood watch is in effect beginning Wednesday at 8 p.m. until Thursday at 8 a.m. for all of Washtenaw County.

A flash flood watch is in effect for Washtenaw County.

According to the National Weather Service, multiple rounds of thunderstorms are expected to bring heavy rain Wednesday night and through Thursday morning. A total of 1 to 3 inches of rain is possible.

The thunderstorm complex is expected to travel across southern Michigan north of a warm front expected near the Michigan border tonight. Heavy rainfall is forecasted at the northern edge of this storm system.

There is a chance of severe weather, most likely in Lenawee and Monroe counties. Severe weather will be most likely to occur between 5 p.m. and midnight, according to the National Weather Service’s Hazardous Weather Outlook.

Wind gusts up to 70 mph and hail is possible late today. Isolated tornadoes are also possible late this afternoon into the early evening along the warm front expected along or south of interstate 94

Steve Considine, a meteorologist at the National Weather Service, told AnnArbor.com earlier today that Ann Arbor will be on the northern fringe of severe weather.

The National Weather Service warns those under the watch to look out for rapid flooding of roads, areas with poor drainage, low ground, rivers and streams.

A severe thunderstorm watch has been issued for Washtenaw County until 2 a.m. on Thursday.

Chelsea Hoedl is an intern reporter for AnnArbor.com. She can be reached at choedl@mlive.com.