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.
Throughout the United States, the greatest potential for the weather to disrupt outdoor plans and festivities on Easter Sunday exists across the Plains.
A low pressure system has begun to spread heavy rain over parts of the Southeast, bringing the risk of flooding to the area.
At least 12 are dead and three are still missing after an avalanche cascaded down a climbing route on Mount Everest early Friday morning.
Showers across much of Europe will make for a soggy day or two through the Easter holiday.
While Pittsburgh will start the weekend on a mild note, even warmer air is expected for Easter Sunday.
Dry weather from Easter weekend will hold through Monday in Boston for Patriots' Day and the 118th annual Boston Marathon.
Central Europe (1991)
Cold outbreak: 12" of snow in the Swiss Alps; temperature dropped to 26 degrees in Berlin.
Lexington, MA (1775)
Lexington-Concord Day; crisp anticyclone morning at 0700: 45.7 degrees, 29 56" rising, wind west, force 1, "very fair" sky - Prof. Winthrop noted at Cambridge, MA: "Battle of Concord will put a stop to observing."
Southern New Hampshire (1785)
Last snow of a famous late winter raised snow cover to 3 feet. Crust that supported horses that morning began to dissolve that afternoon.