Tropical Storm Isaias Expected to Bring Heavy Rain, Flood Threat to Region

    The National Hurricane Center’s official forecast for Isaias as of Sunday morning. (Courtesy NWS/NHC)

    Chances of rain will increase early this week as Tropical Storm Isaias moves closer to the area, with a possibility for torrential tropical downpours and flooding in the D.C. region.

    Even though the storm weakened from a hurricane on Saturday, Isaias — currently near Florida — is forecast to parallel the U.S. East Coast, according to NBC Washington meteorologist Lauryn Ricketts, a path which would bring tropical storm conditions to the region from Monday night through Tuesday.

    The storm — pronounced ees-ah-EE-ahs — had already prompted Virginia Gov. Ralph Northam to declare a state of emergency for the potential of heavy rain and gusty winds from coastal Virginia through Maryland’s Eastern Shore.

    While Isaias’ path is still uncertain, it appears increasingly likely that eastern Virginia could be impacted and must prepare for the possibility of flooding, high winds and potential storm surge, a news release from Northam’s office said.

    The National Hurricane Center’s official forecast track as of Sunday morning had Isaias making landfall as a strong tropical storm in the Carolinas late Monday, before racing northward over the Chesapeake Bay through New Jersey with sustained winds between 45 and 60 mph.

    Parts of the Washington, D.C metropolitan area could see rain totals of up to 6 inches, enough to pose a significant flash flood threat.

    “Confidence for the heavy rainfall is highest along and east of the Blue Ridge Mountains, but the area may shift depending on the exact track of Isaias,” the National Weather Service’s D.C. regional office said in its Sunday forecast discussion.

    “The best chance for tropical storm force winds will be near and east of the center of Isaias, but the heavy rainfall may extend well north and west from the track of Isaias.”

    As part of Maryland Matters’ content sharing agreement with WTOP, we feature this article from Matt Small. Click here for the WTOP News website.