Severe Thunderstorm Watch Issued Across Multiple States – Live Radar, Impact Timeline & Safety Tips

The National Weather Service has issued a Severe Thunderstorm Watch for much of the Mid-Atlantic—including the District of Columbia, central and northern Virginia, most of Maryland, and the eastern panhandle of West Virginia—effective through this evening. Forecasters warn that a fast-moving line of storms will track eastward from the Appalachians into the I-95 corridor during the late afternoon and early-evening commute. What residents should expect • Damaging wind gusts of 60–70 mph are the primary hazard and may topple trees and power lines, causing scattered outages. • Large hail up to quarter size is possible in the strongest cores. • Brief, isolated tornadoes cannot be ruled out where boundary interactions enhance low-level rotation. • Torrential downpours could trigger localized flash flooding on urban roads and small streams, especially in areas that saw heavy rain earlier this week. Timing and locations Storm initiation is most likely between 3 p.m. and 5 p.m. along the Blue Ridge, pushing into the Baltimore–Washington metro between 5 p.m. and 8 p.m. Coastal counties of Maryland and Virginia should see the line after sunset, with storms weakening as they reach the Chesapeake Bay. Why today’s setup is dangerous A potent upper-level disturbance is diving southeast out of the Great Lakes, boosting wind shear while afternoon temperatures soar into the low 90s. That combination of instability and strong winds aloft will allow storms to organize into bowing segments capable of producing widespread straight-line wind damage. Safety tips • Have multiple ways to receive warnings (wireless emergency alerts, NOAA Weather Radio, local media). • Secure outdoor furniture, umbrellas, and lightweight objects that could become airborne. • If a Severe Thunderstorm Warning or Tornado Warning is issued, move to an interior room on the lowest floor of a sturdy building. • Avoid driving through flooded roadways—“Turn Around, Don’t Drown.” • Boaters on the Potomac, Chesapeake Bay, and nearby lakes should return to port well ahead of approaching storms; sudden gale-force winds can capsize small craft. Looking ahead The Storm Prediction Center maintains a Level 2 “Slight Risk” for severe thunderstorms across the entire watch area. Models show a drier, less unstable air mass sliding in overnight, bringing calmer weather by Friday morning. However, another round of thunderstorms is possible late Sunday as a cold front approaches from the Midwest. Stay weather-aware throughout the day, and keep your devices charged in case the storms knock out power.