Restoring power to millions of Texans slammed by the deadly and destructive storm Beryl could take days or even weeks, posing a dangerous scenario for residents without air conditioning as triple-digit heat index temperatures hit the state.

Beryl slammed into southern Texas as a Category 1 hurricane Monday, knocking out power to more than 2.5 million homes and leaving at least eight people dead in Texas and Louisiana.

More than 2 million customers, mostly in Galveston up through Houston, are still without power Tuesday afternoon, according to PowerOutage.us. At least 34 utilities are experiencing outages.

The storm unleashed flooding rains and winds that transformed roads into rushing rivers, ripped through power lines and tossed trees onto homes, roads and cars.

President Biden granted a federal emergency disaster declaration for parts of Texas due to Beryl’s destruction, acting Texas Gov. Dan Patrick announced Tuesday.

“FEMA’s assistance with these costs will expedite the recovery process and help ensure the safety of Texans impacted by Hurricane Beryl,” Patrick said.

The emergency declaration will grant 75% reimbursement for debris cleanup for all 121 impacted Texas counties, Texas Division of Emergency Management Chief W. Nim Kidd said at a Tuesday news conference.

What’s left of Beryl is hurtling into the Midwest. Despite having lost strength and its core, it still threatens to trigger more flooding and tornadoes along its path.