The National Weather Service has issued severe thunderstorm and flood watches for Arlington, Alexandria, Fairfax County, D.C. and surrounding areas.
The Severe Thunderstorm Watch was issued just before 2:30 p.m. and is in effect until 10 p.m. Storms today may pack damaging winds, frequent lightning, and hail, forecasters say.
A severe thunderstorm watch has been issued for parts of DE, DC, MD, NJ, PA, VA, WV until 10 PM EDT pic.twitter.com/p9AvaMoBfq
— NWS Severe Tstorm (@NWSSevereTstorm) June 26, 2025
The Flood Watch is effective from 3 p.m. Thursday through midnight.
Flash flooding caused by excessive rainfall is possible as thunderstorms are expected to develop this afternoon and continue through late evening. Forecasters are particularly concerned about slow-moving storms over the I-95 corridor, where rainfall amounts of 1 to 2 inches are possible, with isolated amounts up to 4 inches.
These heavy rains could occur over a short period of time, potentially resulting in dangerous flash flooding conditions across the region.
More from NWS:
1125 AM EDT Thu Jun 26 2025
…Flood Watch IN EFFECT FROM 3 PM EDT THIS AFTERNOON THROUGH THIS EVENING…
* WHAT…Flash flooding caused by excessive rainfall is possible.
* WHERE…Including the following , District of Columbia, Maryland, including the following areas, Anne Arundel, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Prince Georges and Southern Baltimore, and Virginia, including the following areas, Arlington/Falls Church/Alexandria, Central and Southeast Prince William/Manassas/Manassas Park, Fairfax, King George, Spotsylvania and Stafford.
* WHEN…From 3 PM EDT this afternoon through this evening.
* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas.
* ADDITIONAL DETAILS…
– Numerous thunderstorms are expected to develop later this afternoon and continue through late this evening ahead of an advancing backdoor front moving in from the northeast, as well as along terrain features to the west. As these boundaries collide, slow-moving/training thunderstorms are possible. Particularly concerned about this occurring over the I-95 corridor. Rainfall amounts of 1 to 2 are possible, with isolated amounts up to 4 inches possible. This could occur over a short period of time, potentially resulting in flash flooding.
– Please visit www.weather.gov/safety/flood for flood safety and preparedness informationPRECAUTIONARY/PREPAREDNESS ACTIONS…
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
The region is also under another Heat Advisory today.
The advisory is in effect from 11 a.m.-7 p.m.
1037 AM EDT Thu Jun 26 2025
…HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING…
* WHAT…For the Heat Advisory, heat index values up to 107 expected east of the Blue Ridge, and up to 103 west of the Blue Ridge.
* WHERE…Portions of DC, central, north central, northeast, northern, southern, and western Maryland, central, northern, northwest, and western Virginia, and eastern and panhandle West Virginia.
* WHEN…Until 7 PM EDT this evening.
* IMPACTS…Hot temperatures and high humidity may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
The heat, meanwhile, has prompted another cancellation of outdoor activities by Arlington’s Dept. of Parks and Recreation.
On Thurs., June 26, all Parks & Recreation and partner outdoor programming (including league practices and games) at County outdoor facilities from 11 a.m. to 5 p.m. will be canceled or moved to indoor locations due to a Heat Advisory. Cancellations at Arlington County community centers, parks, or facilities will be communicated directly to program participants via email. Should the weather change, programmatic updates will also be communicated directly to participants.
Summer Camp Programming: In the event of summer camp cancellations, early closings, or relocations, program participants will be notified directly via email and phone call or text.
Consider limiting time outside and beat the heat with these hot weather tips for keeping cool.
Visit our libraries or community centers for free places to spend time indoors.
More on the heat and storm threat, below, from the local NWS office.
It will be another hot and humid day across the region with heat indices up to around 102-107 degrees. Strong to severe thunderstorms are possible this afternoon and evening. Given some storms might be slow movers, there will be a risk of flash flooding. #MDwx #VAwx #DCwx #WVwx pic.twitter.com/f3y8BvQ7Kn
— NWS Baltimore-Washington (@NWS_BaltWash) June 26, 2025
