All Activity

BULLETIN - EAS ACTIVATION REQUESTED Severe Thunderstorm Warning National Weather Service Baltimore MD/Washington DC 615 PM EDT Sat Jul 4 2026 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Northeastern Washington County in north central Maryland... Northwestern Carroll County in north central Maryland... Northwestern Frederick County in north central Maryland... * Until 645 PM EDT. * At 614 PM EDT, a severe thunderstorm was located near Clover Hill, or near Thurmont, moving northeast at 20 mph. THIS IS A DESTRUCTIVE STORM FOR EASTERN WASHINGTON COUNTY MARYLAND AND NORTHERN FREDERICK COUNTY MARYLAND. HAZARD...80 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Expect considerable damage to trees and power lines. Your life is at significant risk if outdoors. In addition to some trees falling into homes, wind damage is possible to roofs, sheds, open garages, and mobile homes. * Locations impacted include... Thurmont, Emmitsburg, Walkersville, Boonsboro, Smithsburg, Mount Aetna, Mount Lena, San Mar, Wolfsville, Myersville, Cavetown, Sabillasville, Fort Ritchie, Ringgold, Harney, Utica, Pleasant Walk, Rocky Ridge, Highfield, and Graceham. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. This is an EXTREMELY DANGEROUS SITUATION with tornado like wind speeds expected. Mobile homes and high profile vehicles are especially susceptible to winds of this magnitude and may be overturned. For your protection move to an interior room on the lowest floor of a building. This storm has the potential to cause serious injury and significant property damage. This is an EXTREMELY DANGEROUS SITUATION. This storm is producing widespread wind damage across eastern Washington County Maryland and northern Frederick County Maryland. SEEK SHELTER NOW inside a sturdy structure and stay away from windows!

All the action is currently in NE PA on radar

ACY 106. Seems high

Storm just popped behind the bay breeze front in northern AA county

Yeah, I'm going to have a couple more then head over to AccuWeather and start cracking skulls. No way is this correct...

Seems like 2 distinct Outflow boundaries rn near the metros that could help initiate. ETA make that 3.

102.4 for the high imby… and now getting the full split.

Severe Weather Statement National Weather Service Baltimore MD/Washington DC 612 PM EDT Sat Jul 4 2026 MDC013-021-042245- /O.CON.KLWX.SV.W.0202.000000T0000Z-260704T2245Z/ Carroll MD-Frederick MD- 612 PM EDT Sat Jul 4 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT FOR NORTHWESTERN CARROLL AND NORTHWESTERN FREDERICK COUNTIES IN NORTH CENTRAL MARYLAND... At 612 PM EDT, a severe thunderstorm was located near Clover Hill, or near Frederick, moving northeast at 20 mph. HAZARD...70 mph wind gusts and ping pong ball 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... Frederick, Thurmont, Emmitsburg, Taneytown, Walkersville, Clover Hill, Myersville, Woodsboro, Sabillasville, Harney, Bloomfield, New Midway, Ladiesburg, Utica, Rocky Ridge, Detour, Keysville, Keymar, Graceham, and Lewistown. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. 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.

Razaaaaaaaaaaaaain False alarm. Had a few sprinkles. Radar lies. Sunny now.

The storms in Maryland are headed for the Susquehanna Valley. Looks like a ton of rain.

Negative for me. I see the NE pivot happening. Will take my thunder, cool down and 0.01” of precipitation.

Thanks pasnownut!! right back at you!!

Brother-in-law is under that one, just lost their yard tent.. no bodily harm though. Hoping something makes precip makes it up this way. .

Yeah, I have doubts too, but we need to let this play out. Some initiation now in Montgomery County. Outflow boundaries could explode in this environment.

Judging by radar, Frederick is maintaining its status as a 2026 precip magnet. Good to see. Could have used a storm on top of me while hiking near Lake Mead earlier. Vegas heat is the real deal.

reports of trees down across roads starting to come in.

Hell of a lightning and thunder show for an hour with some serious wind 0.00"

The contrails will cause the storms. Trust the process, the patriots are in control.

yeah big ol' split showing up right now. LOL at least we would preserve the back-to-back 84F lows.

Today is the first I've heard of experimental WoFS guidance but I like it already because you can pronounce WoFS

.75" so far. Temp. down to 70.

Nothing but some clouds and American air superiority in my backyard

Watch was extended into NYC and now all 21 NJ counties

https://www.wpc.ncep.noaa.gov/metwatch/metwatch_mpd_multi.php?md=0598&yr=2026 Mesoscale Precipitation Discussion 0598 NWS Weather Prediction Center College Park MD 544 PM EDT Sat Jul 04 2026 Areas affected...Central Mid-Atlantic Concerning...Heavy rainfall...Flash flooding possible Valid 042144Z - 050300Z SUMMARY...Expanding clusters of heavy showers and thunderstorms will impact the central Mid-Atlantic region this evening, including the I-95 corridor from central VA through Washington D.C. and into southeast PA and central NJ. High rainfall rates up to near 2 inches/hour will foster concerns for urban flash flooding. DISCUSSION...The late-afternoon GOES-E visible satellite imagery along with radar shows expanding clusters of heavy showers and thunderstorms expanding gradually off to the northeast across western and central VA, with recent development also noted across far northern VA, eastern WV and adjacent areas of west-central MD. The activity is growing upscale as weak shortwave/MCV energy crossing the central Appalachians ejects out into the very moist and unstable boundary layer pooled across the central Mid-Atlantic region. Surface observations show an elongated trough axis aligned rather close to the I-95 corridor from north-central VA through central to northeast MD, and into adjacent areas of southeast PA and central NJ. Along this boundary, MLCAPE values are as high as 2000 to 3000+ J/kg with PWs near 1.75 inches. This is a strongly conducive thermodynamic environment for strong to severe thunderstorms given the steep low and mid-level lapse rates, which will also be conducive for high rainfall rates. Regional hires models appear to be struggling somewhat with the overall convective details and rainfall potential, but radar and satellite trends along with recent data from the experimental WoFS suggest a corridor of rather organized thunderstorms capable of producing rainfall amounts of as much 2 inches per hour, with perhaps most of this falling in as little as 30 minutes. The overall convective threat should tend to align itself rather close to the aforementioned surface trough and generally near the I-95 corridor from northern VA through central and northeast MD, and into southeast PA and central NJ going through the mid-evening hours. Some localized storm totals of 2 to 3 inches will be possible as these clusters of thunderstorms advance generally northeastward this evening, and with the high sub-hourly rainfall rate potential, some areas of mainly urban flash flooding will be possible. Orrison ATTN...WFO...AKQ...CTP...LWX...OKX...PHI...RNK...