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.
Since Tuesday night, NESDIS, NOAA’s satellite and information service, has been experiencing network issues, and has not received a full feed of satellite data for input, a critical component for the numerical models used to forecast the weather.
Gonzalo's fury was felt all the way from Bermuda through eastern Newfoundland and into Europe causing widespread power outages and damaged buildings and killing at least one person.
Frigid conditions and heavy snow led to widespread and extensive school cancellations and delays last year. How will this winter shape up?
A nor'easter will strengthen while moving up the Atlantic coast into Friday with the heaviest rain, strongest winds and biggest waves taking aim on New England and part of Canada.
Storms, including Ana, are lining up over the northern Pacific, en route to the northwestern United States and British Columbia.
After more than a decade, the National Weather Service has officially adopted an experimental short-range weather model capable of providing more precise predictions under rapidly changing storm conditions.
Kansas City, MO (1996)
6.5" of snow. 8 million dollars damage from downed trees and powerlines.
SW Caribbean (1998)
Tropical Storm Mitch formed. Mitch went on to lead to devastating flooding and loss of life across Central America later in the month.
Tuscaloosa, AL (1884)
No rain from August 28-October 22. Severe drought throughout Southeast.