Millions of people across D.C., Maryland, and Northern Virginia are under flood warnings through Saturday, with some areas reporting two to four feet of coastal flooding. It is some of the worst tidal flooding in years, according to the Capital Weather Gang.

The National Weather Service warned of impassable roads, power outages, and flooded docks and marinas. The worst of it is expected to last through Saturday morning.

By Friday afternoon, meteorologists and residents had reported rising tides and heavy winds — up to 40 mph in some places — in Annapolis and other areas along the Chesapeake Bay. Along the Potomac River, Alexandria and National Harbor saw flooding, and water rose in Georgetown and at the Wharf in the District. Parts of the George Washington Parkway were closed due to the heavy flooding.

Dozens of downed trees have been reported throughout the region, and schools in Anne Arundel and Prince George’s County were closed early, per the Capital Weather Gang.

“Those along tidal shores should get ready for exceptional tidal inundation!” the NWS tweeted Friday morning, adding that floods this bad haven’t been predicted since Hurricane Isabel in 2003. That storm brought on flash flooding and serious damage to Anne Arundel County and downtown Annapolis.

How will this affect your weekend? “Very early or late plans today may be ‘okay’ but there are too many weather threats, overall,” the Capital Weather Gang advised. The forecast looks better by Halloween, with temperatures in the low to mid-60s and winds calming down, per the CWG.

The Humane Rescue Alliance has urged pet owners to create an emergency plan, advising that pet parents to talk through the situation with multiple caregivers who can help in a pinch and to arrange a pet supply kit.

“Take the necessary actions to protect flood-prone property,” the NWS says. “If travel is required, do not drive around barricades or through water of unknown depth.”

As the Capital Weather Gang puts it, when facing roadways covered in water, “Turn around, don’t drown.”

Here are some scenes from reporters and residents around the region:

https://twitter.com/SamFord7News/status/1454158190413848578

https://twitter.com/H2Omaker71/status/1454161558246940684

https://twitter.com/forecaster25/status/1454147385303707653

https://twitter.com/BrianLeshak/status/1454141410538577925

This post has been updated with guidance from the Humane Rescue Alliance, and additional reports from around the region.