Millions bracing for severe storms as heat wave continues

Key Points:

• Severe thunderstorms with damaging wind gusts are threatening over 75 million people across parts of the Plains to the Northeast on July Fourth, with the highest risk in the mid-Atlantic and parts of Kansas and Oklahoma under a level 3 threat.
• Severe Thunderstorm Watches cover an area from Missouri to upstate New York, including major cities like Chicago, Washington, D.C., Philadelphia, and New York City, with watches in effect into the evening hours potentially impacting fireworks displays.
• More than 140 million Americans remain under heat alerts, with Washington, D.C. recording its hottest July Fourth on record at 102 degrees; relief from the heat is expected in parts of the Northeast by Sunday.
• Nearly 800,000 customers are without power across multiple states due to the strain from extreme heat and severe weather, complicating Independence Day celebrations and prompting cancellations of major events like parades in Philadelphia and Washington, D.C.
• Amtrak has canceled several trains due to heat-related conditions, and events such as the Great American State Fair and FIFA Fan Zone in Washington, D.C. have delayed opening times to mitigate risks from the ongoing heatwave.