On July 4, 2026, a severe thunderstorm swept across Washington, D.C., forcing thousands of people to leave the National Mall during the main celebration marking the United States' 250th anniversary, Al Jazeera and the Associated Press reported.

Freedom 250, the nonprofit running the event, said people would be allowed back in once it was safe. President Donald Trump would speak to the crowd at 11:00 PM instead of 10:00 PM — a one-hour delay. Trump posted on social media: "I will be there no matter what. It's Saturday night, LETS HAVE SOME FUN, even if we are out late tonight."

The storm hit a day that was already dealing with dangerous weather. The National Weather Service had warned of extreme heat in Washington until 9:00 PM, and had been tracking dangerous storms starting at 2:15 PM until 10:00 PM. There was also an air quality warning. The forecasters called the storm risk "Slight" on a five-point scale, but said the main danger was very strong wind gusts over 58 miles per hour, with some spots possibly seeing gusts up to 70 mph, according to a briefing from the Baltimore/Washington weather office that morning.

This pattern — extreme heat followed by thunderstorms on the same afternoon — is common in the mid-Atlantic during early July. But it meant the worst weather hit exactly when thousands of people were gathered on the National Mall. NBC4 Washington had warned people about both the heat and the storms before the event started. Weather forecasters also said the dangerous heat would continue into Sunday across the wider region.

This wasn't just a Washington problem. Celebrations in Hartford, Connecticut, and in Harrisburg and Wilkes-Barre, Pennsylvania were cancelled entirely because of severe weather. Philadelphia told people to leave its Independence Day events, according to Al Jazeera.

The July 4 event was the biggest part of a larger celebration called "Freedom 250" that was supposed to run from June 25 through July 10 on the National Mall, between the U.S. Capitol and the Washington Monument. Yahoo News reported that Trump treated the event more like a campaign rally than a traditional neutral celebration, and that the administration made visible changes to monuments and fountains in Washington ahead of the anniversary.

A 250th birthday has real political meaning no matter who is president. Trump's decision to take center stage at the Mall event had already drawn criticism before the storm hit. The evacuation and the delay pushed some of the focus away from what was planned and toward the practical job of managing the event safely.

We don't yet know some key details — how many people showed up for the 11:00 PM speech, whether the fireworks happened, and what Trump said — but those facts may come out later. What we do know is that emergency officials and event organizers quickly planned to let people back in and restart the program, and that the same storm system cancelled Independence Day celebrations across much of the Northeast.