(CNN) -- Severe weather in Missouri and Kentucky was predicted to continue Saturday after Friday's rain drenched the states, leaving thousands without power, officials said.
Wind gusts in both states could reach 70 mph Saturday morning, forecasters said.
High winds, thunderstorms and flash floods caused damage on Friday to homes in southern Missouri. Three people were killed and more than 150,000 people were left without power, according to Missouri's Emergency Management Agency.
A couple was killed when a tree fell on their car on a highway near Poplar Bluff, Missouri. A man died of a heart attack near Springfield when winds tossed him and his wife into an open field, officials said.
The storms were also deadly in Kentucky on Friday. One person was killed about 5 p.m. when the storms escalated to "what is believed to be tornadoes," said Carl Richards, the director of the Madison County emergency management agency.
Richards said one person is missing and there are a "significant number of injuries" from the storm.
Some of the injured were taken to nearby hospitals while the more serious were transported to trauma centers in Lexington.
Richards also said a public wastewater treatment plant was destroyed, two fire departments have major roof damage and some manufacturing facilities were damaged.
The National Weather Service will be in Madison County on Saturday with assessment teams to survey the damage and determine if tornadoes did strike the area.