• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

Weatherboy

Weatherboy Weather News, Maps, RADAR, Satellite, and Forecasts.

  • Local
  • Earth Science News
  • RADAR
  • Current Warnings
  • Satellite
  • Current Maps
  • Forecast Maps
  • Video

Excessive Rain, Severe Storms Likely in Northeast / Mid Atlantic

by Weatherboy Team Meteorologist - July 11, 2019

All of the colored areas on the map could see excessive rainfall; the areas in red are most susceptible to flood threats today. Image: NWS




A potent weather system will bring excessive rain and severe thunderstorms to portions of the Mid Atlantic and Northeast this afternoon and evening, prompting the National Weather Service to issue Flood Watches for a large area. The threat is increasing across parts of the Mid Atlantic region for thunderstorms with extremely heavy rain producing flash flooding this afternoon and tonight, especially along the I-95 corridor from northern New Jersey to Washington, DC & the I-81 corridor from Harrisburg, Pennsylvania to Roanoke, Virginia.

Multiple hazards remain in the forecast today and tonight as several rounds of showers and thunderstorms will increase in coverage through the day, especially this afternoon. A warm  front that entered this region this morning will slowly lift  north, being replaced by a lee-side/pre-frontal trough developing to the west near the Great Lakes.  This will advance eastward ahead of the actual cold front that will not arrive at the coast until later tonight.  This  front will trigger  activity that will produce severe weather and flooding rain potential for this afternoon and this evening. Instability will build across eastern pennsylvania, Delaware, eastern Maryland, as well as New Jersey as well. With instability, there’s a risk of severe thunderstorms which could have damaging wind gusts or even produce an isolated tornado or two.




The main concern for today and tonight  remains the potential for heavy rainfall with the showers and thunderstorms . Precipitable water will increase to 2.0-2.25 inches by this afternoon before the heavy rain begins. As a short wave approaches, it will enhance shower and thunderstorm activity, and this very moist airmass will allow for very efficient rain producing storms. Computer forecast guidance continues to show the potential for some storms to produce up to 2-4 inches of rainfall, with a wider area of 1-2 inches. Flooding is likely, especially in eastern Pennsylvania, Maryland, and Virginia, including the Washington, DC metro area that saw record flooding just days ago.

The National Weather Service urges people to “turn around, don’t drown” and to never drive across flood waters.

Primary Sidebar

Sponsored Ad

Search

Latest News

  • Earthquake Hits Tennessee While South Carolina Swarm Quiets
  • Bonnie Becomes Major Hurricane; Moisture Could Head for Hawaii
  • Military Warns of “High Noise” Event in New Jersey Later in July; Weather Could Be a Factor
  • USGS Keeping Four U.S. Volcanoes at Elevated Risk Alert Levels this Holiday Weekend
  • Tropical Storm Colin Weakens to Depression; Warnings Dropped
  • Tropical Storm Bonnie Enters the Pacific, On its Way to Become a Hurricane; Could Bring Moisture to Hawaii
  • Puerto Rico & the USVI Is Shaking this Holiday Weekend; More than 475 Earthquakes Strike the Region; No Tsunami Threat at this Time
  • Earthquakes Rattle Southern Missouri near New Madrid, Home of Violent 1811 Quake
About | Careers | Contact | Contests
Terms | Privacy | Ad Choices
Weatherboy is a (R) Registered Trademark of isarithm LLC, All Rights Reserved.
All content herein is Copyright by Isarithm LLC 1997-2022