Over 800,000 outages have been reported in Texas after severe storms swept through the state over Memorial Day weekend, with more on the way Tuesday.

At least 22 people were killed over the weekend from the storms as they moved through states in the central and southern U.S. The warm, moist air that's fueled one of the most active recent years for tornadoes will linger over the southern Plains, bringing thunderstorms with damaging wind gusts and large hail to Texas on Tuesday, according to the National Weather Service.

The weather service said the clusters of storms are expected to dump heavy rain, triggering flash floods particularly in areas west of Dallas-Fort Worth and north of Austin, and scattered flooding and strong thunderstorms could extend from the Texas Panhandle to the western Gulf Coast.

Storms are expected to continue overnight, where they should move eastward and decrease in intensity.

Here's where power outages have already been reported in Texas.

See photos:Severe storms over holiday weekend leave trail of disaster

Texas counties with large power outages on Tuesday

The majority of outages over the last 72 hours are around the Dallas-Fort Worth area, with another large number of outages around Houston, according to a power outage tracker from USA TODAY.

Here are the Texas counties with the largest number of outages as of Tuesday morning:

• Dallas County: Over 300,000 outages
• Harris County: Over 126,000 outages
• Collin County: over 94,000 outages
• Denton County: Over 66,000 outages
• Tarrant County: Over 52,000 outages
• Kaufman County: Over 40,000 outages

Texas power outages: See map

OFF THE GRID: United States and Texas Power Outage Tracker

Contributing: Christopher Cann, USA TODAY.