ADVISORY: Tropical Storm Warning issued for Southern Maryland


Updated: Monday, 3:42 p.m.

A tropical storm warning is now in effect for all Southern Maryland and nearby waters, in addition to several severe weather watches and warnings in effect across our state. Forecasters anticipate that Tropical Storm Isaias will approach the Carolinas today and move along the coasts of Mid-Atlantic states on Tuesday. Marylanders can expect to feel effects from Isaias beginning this evening and intensifying tomorrow—please be prepared for flooding, tidal surge in low lying areas, and tropical storm force winds.

Learn more about hurricane preparedness from the Maryland Emergency Management Agency:

Use the Know Your Zone tool to determine if the places you live, work, or visit are in one of Maryland’s three evacuation zones:


- A Tropical Storm Warning is in effect for Anne Arundel, Arlington/Falls Church/Alexandria, Calvert, Carroll, Central and Southeast Howard, Central and Southeast Montgomery, Charles, District of Columbia, Fairfax, King George, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery, Prince Georges, Prince William/Manassas/Manassas Park, Southeast Harford, Southern Baltimore, Spotsylvania, St. Marys, and Stafford.

Significant flash flooding of small streams and creeks is likely tonight into Tuesday evening as rainfall associated with Tropical Storm Isaias spreads northward. Widespread rainfall totals of 3 to 6 inches are expected with locally higher amounts possible. The highest amounts are expected east of the Blue Ridge Mountains particularly over the I-95 corridor late tonight through Tuesday. Moderate coastal flooding is also possible at times of high tide Tuesday as Isaias makes its closest approach to the area. Minor wind damage and scattered power outages are also possible especially across southern Maryland.

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