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2018 Mid-Atlantic General Severe Discussion


Kmlwx
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2 minutes ago, yoda said:

Radarscope must be having issues with the hail markers...  the Loudoun cell has a marker of 3.25" lol

It's had problems with both tornado signatures and indicating hail where there isn't even anything on radar today.

Looks like most of the line is losing strength. Lightning fading as well as hail. That said, Frederick is getting a crazy storm. Good thing it's not over Ellicott City!

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New STW issued says golf ball sized hail was reported in FDK

 
498  
WUUS51 KLWX 152354  
SVRLWX  
MDC021-031-043-VAC107-160045-  
/O.NEW.KLWX.SV.W.0071.180515T2354Z-180516T0045Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SEVERE THUNDERSTORM WARNING  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
754 PM EDT TUE MAY 15 2018  
 
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A  
 
* SEVERE THUNDERSTORM WARNING FOR...  
SOUTHEASTERN WASHINGTON COUNTY IN NORTH CENTRAL MARYLAND...  
NORTHWESTERN MONTGOMERY COUNTY IN CENTRAL MARYLAND...  
SOUTHERN FREDERICK COUNTY IN NORTH CENTRAL MARYLAND...  
NORTHERN LOUDOUN COUNTY IN NORTHERN VIRGINIA...  
 
* UNTIL 845 PM EDT.  
 
* AT 753 PM EDT, SEVERE THUNDERSTORMS WITH A HISTORY OF PRODUCING  
LARGE HAIL WERE LOCATED ALONG A LINE EXTENDING FROM NEAR HARPERS  
FERRY TO GREEN VALLEY, MOVING SOUTH AT 5 MPH.  
 
HAZARD...QUARTER TO GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS.  
 
SOURCE...RADAR INDICATED. GOLF BALL SIZE HAIL WAS REPORTED IN  
FREDERICK.
 
IMPACT...EXPECT WIND DAMAGE TO TREES AND POWER LINES. HAIL IS  
LARGE ENOUGH TO DENT AND DAMAGE VEHICLES. SOME HAIL  
DAMAGE TO ROOFS, SIDING, AND WINDOWS IS POSSIBLE.  
 
* LOCATIONS IMPACTED INCLUDE...  
GERMANTOWN, FREDERICK, OLNEY, DAMASCUS, POOLESVILLE, HARRY GROVE  
STADIUM, MONTGOMERY VILLAGE, BALLENGER CREEK, MOUNT AIRY,  
PURCELLVILLE, BRUNSWICK, BRADDOCK HEIGHTS, NEW MARKET, ROUND HILL,  
GREEN VALLEY, CLOVER HILL, DISCOVERY-SPRING GARDEN, BOYDS, POINT OF  
ROCKS AND LINGANORE-BARTONSVILLE.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
GET INDOORS TO PROTECT YOURSELF FROM WIND AND LIGHTNING. TREES AROUND  
YOU MAY BE DOWNED FROM DAMAGING WINDS, SO IF YOU ARE NEAR LARGE  
TREES, MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. DON'T DRIVE  
UNDERNEATH TREES OR IN WOODED AREAS UNTIL THE THREAT HAS PASSED.  
 
 
 
LAT...LON 3934 7719 3927 7713 3926 7708 3918 7707  
3913 7783 3929 7775 3932 7772 3934 7776  
3935 7775 3938 7776 3939 7774 3944 7775  
3948 7712  
TIME...MOT...LOC 2353Z 352DEG 5KT 3934 7769 3936 7722  
 
HAIL...1.75IN  
WIND...60MPH  
 

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3 minutes ago, Amped said:

2.11" of rain already at ballanger creek KMDFREDE106. 4.13"/hr rate

Edit:

5.25" at Monacacy village This is bad

https://www.wunderground.com/personal-weather-station/dashboard?ID=KMDFREDE77

I'm a bit NW of town and I believe every bit of 5-6" already...seen big hail, not quite the golf ball sized as reported, but quite large.

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Just now, Solo2 said:

I'm a bit NW of town and I believe every bit of 5-6" already...seen big hail, not quite the golf ball sized as reported, but quite large.

Same here, if there was any golfball hail it washed away before I saw it, clearly not the primary concern. This is pushing the limits of the flood control system.

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Just now, Amped said:

Same here, if there was any golfball hail it washed away before I saw it, clearly not the primary concern. This is pushing the limits of the flood control system.

There may be some elevated areas NW of town that get 10" the way this...well....not moving away from the area.

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