Drenching, Gusty Storms Rattling the East Coast

By , Senior Meteorologist
August 11, 2012; 3:25 PM ET
Share |
Photo by Ivan Tykhyi/Photos.com.

Drenching and gusty thunderstorms threaten to ruin weekend plans up and down the East Coast into this evening.

Today started with heavy thunderstorms rattling the central Gulf Coast, leading to flooded and impassible streets in North Slidell, La., early this morning.

Other streets and highways could face a similar fate into this evening as additional drenching thunderstorms rumble along the corridor from Savannah, Ga., to Norfolk, Va., to New York City to Boston, Mass., to Lebanon, N.H., and Portland, Maine.

Rainfall rates of an inch or more an hour in some of the thunderstorms through this evening will easily overwhelm storm drains, causing water to flood streets and basements.

Water could pond on roadways, significantly heightening the risk of vehicles hydroplaning when traveling at highway speeds.

In any downpour, it is better to seek shelter than use your umbrella if lightning is also present.

Even where flooding does not ensue, motorists should use caution as the downpours will dramatically reduce visibility.

Heavy bursts of rain could also lead to flooding of low-lying, poor drainage and urban areas.

"Small streams can rapidly rise and overflow their banks," warned AccuWeather.com Expert Senior Meteorologist Alex Sosnowski.

It is not just blinding and flooding downpours AccuWeather.com meteorologists are concerned about. A handful of the thunderstorms have and will become severe with damaging winds and frequent lightning.

Violent thunderstorms will even expand northwestward to the southern St. Lawrence Valley, home to Montreal, into this evening. An isolated tornado cannot be ruled out here, while waterspouts remain a concern along the shores of lakes Erie and Ontario.

Residents and visitors along the East Coast will find that Sunday will actually be a better day for outdoor plans than this afternoon.

A shower or thunderstorm will continue to dot the region to close out the weekend, but this activity will be spotty and there will be less of a severe weather and flooding downpour threat.

The exception will be across eastern New England, including Boston. Additional thunderstorms triggering localized flash flooding are expected.

Comments

Comments left here should adhere to the AccuWeather.com Community Guidelines. Profanity, personal attacks, and spam will not be tolerated.

More Weather News

  • East Late-Summer Heat to Continue This Week

    September 1, 2014; 2:51 PM ET

    The late-season swelter will continue along much of the Atlantic Seaboard through the week as tens of millions head back to school and work.

Daily U.S. Extremes

past 24 hours

  Extreme Location
High N/A
Low N/A
Precip N/A

WeatherWhys®

This Day In Weather History

Yuma, AZ (1950)
123 degrees - hottest temperature ever in Yuma. Yuma is the hottest city in the U.S.

Los Angeles, CA (1955)
110 degrees, hottest day ever in September. This mark was tied September 4, 1988.

Milwaukee, WI (1988)
Hottest summer on record. Six days of 100 degrees or greater and 36 days of 90 or above. Average temperature of 73.8 beat the old record of 72.8 set in 1921 and 1955. The normal average tempera- ture for a summer in Milwaukee is 68.3 degrees.