Share this article:
Heat and humidity surging from the Great Lakes and Ohio Valley into the Northeast will be the key ingredients for severe weather to develop Tuesday and Tuesday night.
This surge of heat reached across the Ohio Valley and eastern Great Lakes to close out the weekend.
High temperatures were at 90 F in Indianapolis and Columbus on Monday afternoon, while Detroit came just shy of hitting the mark.
A push of cooler and less humid air is set to push across the region on Tuesday. This push will interact with the hot and humid air and trigger severe thunderstorms from Louisville, Kentucky, to Pittsburgh and Buffalo.
“The storm system moving through the Great Lakes will be rather potent for this time of the year, increasing the risk for severe weather,” said AccuWeather Meteorologist Evan Duffey.
These storms will be capable of producing damaging winds, flash flooding and hail.
A few of the strongest storms could even spin up a tornado.
Motorists traveling on interstates 65, 70 and 80 should be prepared for poor visibility and possible delays due to torrential rainfall during these storms.
The threat for severe weather will shift eastward Tuesday night as locations from West Virginia through central Pennsylvania, upstate New York and southern Quebec will be at risk.
Damaging winds and flash flooding will be the most widespread concern as the storms begin to weaken after sunset.
Ahead of the thunderstorms, temperatures will climb into the 90s from Washington, D.C., to Philadelphia, and approach 90 from New York City to Boston on Tuesday afternoon.
Showers and thunderstorms will reach the I-95 corridor late Tuesday night; however, the risk for severe weather will be minimal as the storms lose their punch after midnight.
Showers and thunderstorms may linger through midday Wednesday, impacting the morning commute for D.C., Baltimore, Philadelphia, New York and Boston.
A much cooler air mass will settle over the mid-Atlantic and Northeast on Wednesday and Thursday. Dry conditions and sunshine will accompany the cool air.
High temperatures in the upper 70s to lower 80s will be common across the mid-Atlantic and Northeast both days along with low humidity.
Comments that don't add to the conversation may be automatically or manually removed by Facebook or AccuWeather. Profanity, personal attacks, and spam will not be tolerated.
Racers of the 2018 Tour de France will emerge from the mountains on Friday; however, new challenges await.
Prior to the arrival of much cooler and less humid air at midweek, thunderstorms packing torrential downpours and locally damaging winds will rattle the northeastern United States into Tuesday evening.
More than 1,450 emergency personnel are still working to contain the massive wildfire near California’s Yosemite National Park that took a deadly turn over the weekend.
Rounds of thunderstorms packing torrential rain and gusty winds will erupt along a temperature contrast zone across the Great Plains through the middle of this week.
A lightning strike can result in a cardiac arrest and death, and the most lightning strikes occur during warm summer months when people are outside enjoying the weather.
Saving the planet’s oceans from plastic pollution isn’t on the agenda of a typical sixth grader. However, Anna Du is working to achieve just that.
Tropical Storm Son-tinh strengthened over the South China Sea on Tuesday and has its sights set on Hainan, China and northern parts of Vietnam and Laos in the coming days.
The North American monsoon, which has brought localized but dangerous flash flooding to parts of the southwestern United States over the past week, will finally ease back into the upcoming weekend.