4 dead as severe storms hit Houston area; nearly 1 million without ...

Mayor John Whitmire said at the briefing that the city had “80, 90, 100 mile per hour storms” and that “some twisters” were “mixed into strong winds.”

He urged those in his city to stay home and off the roads.

"Stay at home. Do not travel on the roads. It's dark; there's trees across roadways. ... So be very patient, cautious, look out for one another, stay at home tonight, don't go to work tomorrow unless you're an essential worker," he said.

Schools in the Houston Independent School District will be closed Friday, Whitmire said.

Whitmire said that downtown Houston is a "mess," that firefighters were taking live wires off of Route 290 and that most traffic lights across the city are down.

He said agencies in the city will be working around the clock and through the night to clear debris and make conditions safer.

In an earlier statement, Whitmire said that “many roads are impassible due to downed power lines, debris, and fallen trees.” He also touched on the “significant” power outages and reports of damage in the area.

In Harris County, where Houston is, nearly 830,000 homes and businesses were without power at about 10 p.m. CT, according to poweroutage.us. About 963,000 customers in the state were without power Thursday night, down from more than 1 million earlier in the evening.

The National Weather Service was expecting 3 to 6 inches of rain to fall, with higher totals possible in some areas. A flood watch was in effect through Friday morning.

The National Weather Service office in Houston warned that tornadoes were possible as "severe storms continue to roll across our coastal counties."

Flood warnings for parts of southern Texas are in effect until Friday morning, according to the National Weather Service, covering parts of Harris County, as well as cities such as Austin, Brazos, Burleson, Grimes, Houston, Madison, Montgomery, northern Liberty, Polk, San Jacinto, southern Liberty, Trinity, Walker, Waller and Washington.

Harris County Precinct 2 Commissioner Adrian Garcia on social media urged his crews to "stay in place" as "many limbs are down making roads unsafe." He added that his teams were on standby to begin removing debris "once winds diminish."

Photos and videos on social media show intense flooding and downed trees across Houston, as well as toppled electrical towers and power lines.

In a video posted to Facebook, rain leaks into Minute Maid Park, where the Houston Astros play. Another video shows hordes of baseball fans leaving the stadium amid the bad weather.

Winds in the area were so strong they appeared to blow off roof panels at a Hyatt Regency Hotel in Houston, another video posted to social media shows.

And the windows of a building in Wells Fargo Plaza in Houston appear to have been blown out in a post on X.