A slow moving trough/front coupled with gulf moisture, will continue to enhance rainfall across the Eastern United States with the potential for flooding.
Heavy rain brought flash flooding to the DC metro area Friday morning. Additional heavy showers could lead to flash flooding through the afternoon across the Mid-Atlantic and Eastern Carolinas. #DCwx #MDwx #VAwx pic.twitter.com/1BOnXbRHFc
— WeatherNation (@WeatherNation) August 20, 2021
Flash Flood Watches are in effect tioday for most of the Middle Atlantic from Delaware Bay to the Hampton Roads.
The excessive rainfall outlook includes a slight risk of flash flooding for coastal areas of Delaware, Maryland, Virginia and North Carolina with a marginal risk westward to the mountains. For Saturday, areas from Chesapeake Bay into New York have a marginal flooding risk.
Pockets of 2-4 inches of rain can be expected with isolated higher totals possible, potentially over 6 inches where multiple thunderstorms form.
Showers and thunderstorms will increase through the afternoon, bringing pockets of heavy rain and the risk of flooding. A number of flash flood warnings were in effect earlier in Washington, DC for heavy rain and flooding.
Storm coverage will decrease into Saturday morning, but a few areas may continue to see heavy rain. The wind flow will shift for Saturday with an onshore flow ahead of Henri. That’ll keep humidity levels high with the threat for more storms, with coverage gradually shifting northward.
Stay with WeatherNation for all updates on heavy rain and flooding impacts in major metropolitan areas. You can catch the Northeast Regional Forecast at :10 past every hour.