4th of July Forecast Has Three Serious Threats — Which One Is Heading Your Way?

The early look at the Fourth of July weather forecast is here, signaling a mixed bag of conditions across the U.S. Everything ranging from oppressive heat, thunderstorms, and wildfire smoke is on the table for the holiday. Here is a peek at the forecast as Americans look to celebrate the country's 250th birthday.

Potential Weather Hazards for the Fourth of July Weekend

There will be a little bit of everything in the forecast for the Fourth of July weekend. While some areas escape with little to no disruptions, other places will be kept on their toes due to the unpredictability of Mother Nature this time of the year.

According to the American Automobile Association (AAA), an estimated 72.2 million people are predicted to travel at least 50 miles away from home during the long weekend. The bulk of these travelers will be on the roads.

As is typical this time of the year, thunderstorms will present the greatest challenges to travelers and to those with outdoor plans. Thunderstorms tend to strike during the peak afternoon heating hours in early July. This means that just because your beach plans may be threatened by the thunderstorm activity, there is still a good chance that the inclement conditions will improve in time for the fireworks show.

Flight delays and ground stops could be a concern when storms roam near airports. Motorists may encounter periods of heavy rain capable of leading to ponding on roadways and poor visibility.

Forecasters are now warning that this heat wave could be historic as a heat dome builds over the eastern half of the country in the days leading up to the holiday. The National Weather Service says this could be the most widespread heat wave of the summer so far, with temperatures in the 90s to low 100s and heat index values approaching or exceeding 105 to 110 degrees in many areas. Warm overnight lows will limit relief, with some locations potentially setting records for warmest overnight minimums.

While the heat initially focused on the central U.S., the greatest departure from normal temperatures will be across the eastern third of the country as the three-day weekend approaches, peaking Thursday into Friday. The Mid-Atlantic and Northeast will also be under the gun for dangerous, potentially record-setting heat over the holiday.

There is also a good chance that several waves of thunderstorms ignite around the northern rim of the heat dome. Known in meteorological terms as the "ring of fire," it is not unusual for storms to fire up along the edge of these areas of high pressure.

The National Hurricane Center (NHC) is also monitoring the remnants of Tropical Storm Arthur, the season's first named storm, which made landfall near Galveston, Texas, earlier this month. Its remnants are expected to move offshore the East Coast and could see some subtropical or tropical redevelopment over the Western Atlantic. Regardless of development, heavy rainfall is possible across portions of the Southeast United States. Even if the feature does not evolve into a tropical storm, a long stretch of the coastline from the Southeast to the Gulf Coast could be dealing with heavy rain, high winds, and rough seas as beachgoers flock to the region.