Millions across the US East Coast are facing a dangerous heatwave as temperatures soar to 100°F (38°C) on the 4th of July weekend. The National Weather Service (NWS) warns that the heat index could feel as high as 115°F in major cities like Washington DC, Philadelphia, and New York.
This extreme weather coincides with President Donald Trump's 250th birthday celebration and several outdoor World Cup matches. The heatwave follows an unprecedented early summer heat in Europe, raising alarms about public safety during these events.
Impact of the Heatwave on Major Events
The NWS has issued warnings about the prolonged heat affecting anyone without proper cooling and hydration. As temperatures hit 90°F in Washington and New York City by Thursday morning, they later reached 100°F in Central Park, feeling like 106°F—marking the hottest day there in 15 years.
New York City Mayor Zohran Mamdani advised residents to remain indoors and cool, especially those attending events such as the upcoming wedding of pop star Taylor Swift and NFL player Travis Kelce at Madison Square Garden on Friday. “Stay inside and stay cool,” he emphasized at a news conference.
Severe Weather Warnings Across the Northeast
In the nation’s capital, a record of four consecutive days of 100°F heat is anticipated, a rare occurrence. On Thursday, the United States Capitol Police limited attendance to essential personnel for a rehearsal for the July 4 concert due to excessive heat concerns. Despite these warnings, President Trump plans to deliver an outdoor speech during the celebration.
As heat warnings extend from the Midwest to the northeast, forecasters predict that high humidity will exacerbate conditions, with heat indices expected to reach 115°F. Canada is also experiencing extreme heat, with Ontario reporting temperatures nearing 99°F.
Climate Change and the Rising Frequency of Heatwaves
This heatwave is attributed to a persistent area of high pressure known as a “heat dome,” along with dry soil conditions that amplify temperatures. Without moisture to evaporate, the solar energy intensifies ground temperatures. Heatwaves are becoming more frequent and severe due to human-induced climate change, with the world already warming by approximately 1.1°C since the industrial era.
While temperatures are projected to drop slightly on July 4, severe thunderstorms may accompany this change. However, the heat will remain above average during the weekend, with a more significant drop expected on Sunday and Monday as cooler air moves in from the north.
🤖 This article was rewritten by Feed and Figures' editorial AI from a report originally published by BBC News. Facts and quotes are preserved from the original; the rewrite focuses on clarity and structure. For the unedited original, see the source link below.
