Potent Storm to Bring Flood Threat to NYC

By Jordan Root, Meteorologist
August 12, 2014; 8:33 AM ET
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Water-filled basements and roadways may become a common sight across the Northeast through the middle of the week.

A potent storm system is passing through the region, bringing a wide variety of risks for residents.

Sarah Glenn, AccuWeather Storm Warning Meteorologist, is especially concerned for widespread flooding.

"High moisture content in the atmosphere will heighten the risk for torrential downpours that could lead to flash flooding," said Glenn.

Motorists will want to pay extra attention to the weather and set aside extra time when traveling.

"If roadways and streets do become submerged in water, many motorists will be faced with travel delays," added Glenn.

As of Tuesday evening, more than 6 inches of rain has been reported at Baltimore-Washington International Airport.

Traffic through Harbor Tunnel has been delayed due to closure because of flooding, Maryland Department of Highways reported.

(Photo/Instagram user Blueagavebalto)

The heavy rain also lead to the cancellation of the evening matchup between the New York Yankees and Baltimore Orioles at Camden Yards.

Many cities will be at risk for flooding through Wednesday, including Philadelphia, Pennsylvania; Allentown, Pennsylvania; Washington, D.C.; Baltimore, Maryland; New York City, New York; Albany, New York; Boston, Massachusetts; Burlington, Vermont; Montreal, Quebec; and Portland, Maine.

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Heavy rain will spread across southern Ontario to northern Virginia on Tuesday afternoon and track northeastward through Wednesday.

The evening commute could be impacted for many cities including Philadelphia and Allentown. Meanwhile, folks in New York City could be faced with delays early Wednesday morning.

"Many locations will pick up between 2 and 4 inches of rainfall with locally higher amounts possible," said AccuWeather.com Meteorologist Brian Edwards.

"Rainfall to this magnitude will lead to flooding of streams and creeks," added Edwards.

In addition to the flooding risk, some areas may experience gusty winds and hail.

Several clusters of strong storms are expected to fire along a cold front across eastern Ohio to West Virginia on Tuesday afternoon, dropping hail and producing gusty winds along their path. An isolated tornado cannot be ruled out either.

The threat for gusty winds and hail will be lower for Wednesday, but the risk for flooding will continue. The main area of concern will extend from southern Quebec to southern New England.

This same storm system is responsible for record rainfall in Detroit, Michigan, on Monday.

Rainfall at the Detroit Metropolitan Airport measured 4.57 inches, making it the wettest August day on record.

Widespread flooding was reported in and around the city as streets turned into raging rivers and basements turned into lakes. Many people who were heading home from work found themselves stranded in high water.

Molly Manley took this picture of I-94, one of the many flooded roadways around Detroit Monday night. "I-94 looks like a canal, not a highway," said Molly.

Several rivers in Detroit, including Clinton, Rouge, and Lower Rouge rivers, were out of their banks Monday night.

Flooding will be possible across Maine Wednesday night and through much of Thursday.

As the week comes to an end, so will the threat for flooding. Temperatures will remain rather cool for the rest of the week, but above-normal warmth may be on the way for the end of the month.

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