Severe thunderstorms are firing from New York state through Tennessee, with damaging wind gusts being the biggest threat. Storms will be most intense through this evening before diminishing in intensity overnight.
The same storm system which brought rounds of severe weather from the Dakotas to the western Great Lakes and middle Mississippi Valley Friday and Saturday will again be the main culprit for this severe weather outbreak.
The unusually potent disturbance by early August standards will impact millions of people as it blows through the heavily populated cities in the East.
All the necessary atmospheric ingredients are coming together to help trigger dangerous thunderstorms.
The focus of the strongest thunderstorms will be along the cold front as it passes through eastern Canada, the eastern Great Lakes and the Tennessee Valley.
Out ahead of the front, very warm and moist air will be abundant all the way to the East Coast. With just a little bit of heating from the sun, the air mass is providing plenty of instability to support storms into the first half of tonight.
According to Meteorologist Matt Alto, "lines of dangerous thunderstorms are developing and they will be capable of producing damaging winds in excess of 60 mph as well as torrential downpours. Hail to the size of ping-pong balls will also be possible, especially from the Ohio Valley south into the Tennessee Valley."
Binghamton, Albany, Washington D.C., Scranton and Harrisburg will be the first in line this afternoon and evening for severe weather. The storms will track toward the east into New York City, Philadelphia, Dover and Atlantic City late this evening and tonight.
Severe Weather Reports Through Sunday Afternoon:
--8:47 P.M. EDT: A 74 m.p.h. wind gust was reported near Silver Lake, Ore. by a trained spotter.
--8:41 P.M. EDT: People are trapped in a Dollar General Store near Cecilia, Ky. on US 62 with a water rescue underway
--8:01 P.M. EDT: A 60 m.p.h. wind gust was reported at the Newark, N.J. Airport.
--7:39 P.M. EDT: Multiple vehicles are stranded in flood waters in Robinson Township, Pa.
--6:05 P.M. EDT: An airplane pilot reported a tornado located 2 miles south of Sidney, N.Y.
--5:50 P.M. EDT: Report of three people struck by lightning at Pocono Raceway parking lot. Two transported to hospital, no word on condition of victims.Third victim treated and released.
--5:38 P.M. EDT: A car is stuck in flood waters near the River St. underpass in West Springfield, Mass.
--5:17 P.M. EDT: A person in Moultonborough, N.H. was injured when a tree fell on the car.
--4:10 P.M. EDT: Radar estimates of around 2 inches of rain over the last hour over Adams and northern York Counties in Pa. Flash flooding has been reported.
--4:00 P.M. EDT: A motorcyclist was injured when a tree fell on their bike in downtown York, Pa.
--4:00 P.M. EDT: 47 mph wind gust in Harrisburg, Pa.
--3:50 P.M. EDT: Tree fell on a house in Dover Township near York, Pa.
--3:40 P.M. EDT: Trees and wires down on Route 202 in Bennington, N.H.
--3:10 P.M. EDT: Large tree blocking a road in Pittsford, N.Y.
--3:05 P.M. EDT: Trees and wires down in southern Hamilton Township in Pa.
--2:50 P.M. EDT: Numerous trees and wires reported down in Walworth and Ontario, N.Y.
--2:47 P.M. EDT: Trees down on routes 10 and 142 near Bernardston, Mass. causing the roads to be closed.
--2:45 P.M. EDT: 4-6 inches of water flowing across Highway 26 near Corbin, Ky. Many area creeks and streams are at bank full.
--2:23 P.M. EDT: Trees and wires reported down in the city of Rochester, N.Y.
--2:15 P.M. EDT: Bledsoe Creek is above its banks near Hartsville, Tenn.
--2:08 P.M. EDT: Wires down in Chili Center, N.Y.
--2:01 P.M. EDT: A tree was knocked down on the guardrail of I-81 southbound near Winchester, Va.
--2:00 P.M. EDT: 42 mph wind gust at Buffalo Int'l Airport, N.Y.
--2:00 P.M. EDT: Trees and wires down throughout the town of Clarence, N.Y.
--1:50 P.M. EDT: Tree limbs and power lines down throughout East Aurora, N.Y.
--1:45 P.M. EDT: Trees down on the intersection of Louisiana and Republic streets in the city of Buffalo, N.Y.
--1:35 P.M. EDT: Trees and power lines down in Hamburg, N.Y.
--1:30 P.M. EDT: Trees knocked down throughout the city of Dunkirk, N.Y.
--1:05 P.M. EDT: Minor flooding on several streets in Hartsville, Tenn.
--1:04 P.M. EDT: 59 mph wind gust in Dunkirk, N.Y.
Storms are expected to decrease in intensity as we head throughout the overnight hours.
In the wake of this system, less humid and pleasant air will filter into the Northeast and mid-Atlantic for the early part of the week.
Keep it with AccuWeather.com and the AccuWeather.com Severe Weather Center. throughout the course of the day as we bring you more information as the severe weather unfolds.
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Rounds of showers and thunderstorms moving westward off the coast of Africa may pave the way for future tropical systems over the Atlantic Ocean in the weeks ahead.
The Formula One race in Hockenheim, Germany, this weekend could become the third consecutive race to be disrupted by showers and thunderstorms.
Additional downpours are likely to roll across northern New Jersey and could suspend play during the late rounds at the 98th PGA Championship at Baltusrol Golf Club this weekend.
Tropical Depression 06w threatens to bring flooding rain to the Philippines into this weekend with potential future impacts on China and Taiwan.
Amarillo, TX (1982)
4.22" of rain -- 24-hour July rainfall record.
Eureka, CA (1982)
A total of 0.03" in drizzle -- a daily rainfall record for midsummer.
11 of the past 12 days brought heavy rain to at least some part of the state.