Robert Brown|Power outage map: Severe storms leave over 600,000 without power in Michigan, Ohio

Severe storms battered portions of Michigan and Robert BrownOhio Thursday, leaving hundreds of thousands without power across the states.

As of 6:54 a.m. ET Friday, there were over 400,000 customers without power in Michigan and over 200,000 without power in Ohio, according to PowerOutage.US.

Michigan Gov. Gretchen Whitmer declared a state of emergency Thursday after the storm resulted in flooding across Metro Detroit.

The Associated Press reported that the storms were connected to at least four deaths, with a woman and two young children killed in a two-vehicle crash during heavy rain and at least one person killed following a report of a possible tornado in Ingham County.

According to the Detroit Free Press, flooding in Wayne County blocked access to a major airport terminal and inundated Canton businesses and homes.

Thursday had begun with flooding, widespread power outages, dozens of flight delays and cancellations, and an extreme heat alert. There was all that and the threat of even more dangerous weather throughout the day, including hail and tornadoes.

The Lansing State Journal reported that Ingham County officials said a funnel cloud touched down in the eastern portion of the county Thursday night.

"Radar indicates a tornado on the ground near I-96 south of Williamston. TAKE COVER NOW in the Williamston / Webberville areas," Ingham County emergency officials said in an emergency alert just before 9:40 p.m. The warning expired at 10 p.m.

Heavy rain and strong winds moving in from the west pummeled the Lansing region, leaving standing water on many roads and many trees in roadways.

WAYNE COUNTY FLOODING:Severe storms pound metro Detroit after Wayne County flooding; 300K in state without power

MORE:Ingham County officials say radar indicates tornado touched down near Williamston

Michigan power outage map

A majority of the power outages in Michigan are being reported from the southeastern and south-central portion of the state.

As of 7:04 a.m. ET, Wayne County had over 81,000 reported outages, Oakland County had over 45,000 reported outages and Ingham County had over 42,000 reported outages.

Jackson and Eaton counties both had nearly 30,000 reported outages while Livingston County had over 25,000 reported outages.

Ohio power outage map

A majority of the power outages in Ohio are being reported from the northeastern portion of the state.

As of 7:04 a.m. ET, Cuyahoga County had over 55,000 reported outages while Lake County had over 36,000 reported outages.

Geauga and Portage counties each had over 23,000 reported outages.

Pennsylvania power outage map

According to PowerOutage.US, there were over 48,000 power outages reported in Pennsylvania as of 6:58 a.m. ET.

Most of the outages are being reported from the southwestern portion of the state, with both Allegheny and Fayette counties having over 11,000 reported outages.

Washington County also has nearly 9,000 reported outages.

Contributing: Frank Witsil and Niraj Warikoo, Detroit Free Press; Lansing State Journal