Headline:
Severe Thunderstorm Warning issued July 18 at 3:41PM EDT until July 18 at 4:00PM EDT by NWS Baltimore MD/Washington DC
Event:
Severe Thunderstorm Warning
Urgency:
Immediate
Effective:
July 18, 2026 - 12:41pm
Expires:
July 18, 2026 - 1:00pm
Description:
At 341 PM EDT, a severe thunderstorm was located 8 miles north of
Olney, moving northeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches to
fall. This could injure those outdoors, as well as damage
homes and vehicles. Roadways may become blocked by downed
trees. Localized power outages are possible. Unsecured
light objects may become projectiles.
Locations impacted include...
Columbia, Gaithersburg, Olney, Montgomery Village, Redland, Highland,
Washington Grove, Laytonsville, Brookeville, Clarksville,
Simpsonville, West Friendship, Glenwood, Dayton, Roxbury Mills,
Glenelg, and Brinklow.
Instruction:
A Tornado Watch remains in effect until 900 PM EDT for central
Maryland.
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
Area Description:
Howard, MD; Montgomery, MD
Forcast Office:
NWS Baltimore MD/Washington DC
Sender: