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Severe Weather Statement National Weather Service Baltimore MD/Washington DC 257 PM EDT Sat Jul 18 2026 MDC013-021-181915- /O.CON.KLWX.SV.W.0265.000000T0000Z-260718T1915Z/ Carroll MD-Frederick MD- 257 PM EDT Sat Jul 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT FOR NORTHWESTERN CARROLL AND NORTH CENTRAL FREDERICK COUNTIES IN NORTH CENTRAL MARYLAND... At 257 PM EDT, a severe thunderstorm was located over Taneytown, or 8 miles southeast of Emmitsburg, moving east at 25 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... Taneytown, Keysville, and Harney. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 900 PM EDT for north central Maryland. Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building.

No sun here - it’s been raining again for 20-30 mins. But the sky is getting brighter.

I have my eye on the stuff north of State College. If the Lehigh Valley is going to see any severe weather, it’ll be from that. If it can latch onto the warm front it might get pretty gnarly.

Just had a neighborhood strike. Absolutely incredible lighting display around here with these storms. Top 10 for me.

Great write up Newman, was hoping to hear your thoughts I’m really liking my backyard we are in a great spot for instability and shear.

BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Baltimore MD/Washington DC 300 PM EDT Sat Jul 18 2026 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Northeastern Washington County in north central Maryland... Western Carroll County in north central Maryland... Western Howard County in central Maryland... Northern Montgomery County in central Maryland... Frederick County in north central Maryland... Northeastern Loudoun County in northern Virginia... * Until 400 PM EDT. * At 259 PM EDT, severe thunderstorms were located along a line extending from Mount Lena to near Poolesville, moving northeast at 30 mph. HAZARD...70 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, Germantown, Frederick, Gaithersburg, Leesburg, Hagerstown, Olney, Damascus, Thurmont, Poolesville, Emmitsburg, Harry Grove Stadium, Montgomery Village, Eldersburg, Ballenger Creek, Redland, Mount Airy, Robinwood, Taneytown, and Brunswick. PRECAUTIONARY/PREPAREDNESS ACTIONS... Prepare immediately for large hail and damaging winds. People outside should move immediately to shelter inside a strong building. Stay away from windows. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with these storms. 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 these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. A Tornado Watch remains in effect until 900 PM EDT for central and north central Maryland. && LAT...LON 3918 7686 3910 7753 3961 7771 3972 7748 3972 7712 TIME...MOT...LOC 1859Z 246DEG 26KT 3957 7762 3914 7746 THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...70 MPH $$

On Keowee called the north Cliffs. Beautiful up here. This summer is the first time I've been to this lake.

Storms along the Frederick/Montgomery County line fading. Looks like an outflow boundary pushing south along I-270.

I mentioned in the severe thread, but the lightning today region wide in these storms will be no joke. A combination of lots of water and lots of lift in the phase transition layer is going to equal a lot of lightning.

Lots of lightning outside of the storms, just had a really close strike by my house and we are a good 20-25 miles from the rain

Meh the girlfriend has a lake house so we are on the beach watching it roll in.

This round has dropped around 0.20” here. Not enough, but slowing down the crew putting a new roof on my house.

Yup and I am hearing some thunder now from the storms to the north.

The boundary which is moving northward into NOVA seems to be popping a bunch of storms off it now. The main cell south of manassas looks rough with 70mph winds in its core. May angle to get me with a direct hit.

what is this wet stuff that appears to be falling from the sky?

Similar here with temp 83 and dp 77. Lightening detector is picking up the stuff north of here.

Part 2 incoming

Yep just got warned - if it holds together could affect DC given its NE motion...

Overall Stein here round one with just a shower . Round two looks like another congrats NYC . Unreal

Clobbering Frederick now, looks like its headed down I70 towards Ellicott City later. Maryland's 2 flood magnets of course.

I got caught a little off guard on my 10 mile hike this morning. That sun came out and the heat index went nuts. It kicked my butt a little bit. Prime environment for big rainers for some.

The lightning today is no joke with all the water and MLCAPE in the phase transition layer.

Storm SE of Warrenton looks interesting...

New all-time highest MSLP record set for Australia.

1.77” and constant thunder for 3 hours. 6.22” in July