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2020 Mid-Atlantic Severe Weather - General Thread


Kmlwx
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1 minute ago, Eskimo Joe said:

I'm thinking the TORs are coming off the terminal radars because the velocities off LWX don't appear too impressive.

They may just be warning broad rotation. But that MoCo one did look pretty good on a few of the TDWRs. It doesn't look great right now. 

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1 minute ago, Kmlwx said:

My guess is this will end up being remembered for lightning instead of severe - not seeing any LSRs even yet. 

Wait and see ;)

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 PM EDT THU SEP 03 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0445 PM     TSTM WND GST     1 ENE WASHINGTON GROVE  39.14N  77.16W
09/03/2020  M58 MPH          MONTGOMERY         MD   MESONET


&&

EVENT NUMBER LWX2002367
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2 minutes ago, Eskimo Joe said:

I'm thinking the TORs are coming off the terminal radars because the velocities off LWX don't appear too impressive.

There's a relatively good indication of 1-km AGL rotation from KLWX for the storm west of Baltimore City. Also some shear-induced size sorting evident in the relative placement of the ZDR and KDP maxima.

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Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
500 PM EDT Thu Sep 3 2020

DCC001-MDC027-031-033-VAC059-032130-
/O.CON.KLWX.SV.W.0438.000000T0000Z-200903T2130Z/
District of Columbia DC-Howard MD-Montgomery MD-Prince Georges MD-
Fairfax VA-
500 PM EDT Thu Sep 3 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR THE NORTHERN DISTRICT OF COLUMBIA...SOUTH CENTRAL HOWARD...
SOUTHEASTERN MONTGOMERY...NORTHWESTERN PRINCE GEORGES AND
NORTHEASTERN FAIRFAX COUNTIES...

At 459 PM EDT, a severe thunderstorm with a history of producing
measured wind gusts to near 60 mph was located over Aspen Hill, or
near Rockville, moving east at 30 mph.

HAZARD...70 mph wind gusts.

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, Rockville, Bethesda, Gaithersburg, Reston, Olney, College
Park, Greenbelt, Langley Park, Beltsville, Bladensburg, American
Legion Bridge, Fort Totten, University of Maryland, Howard
University, Aspen Hill, Potomac, North Bethesda, Montgomery Village
and North Potomac.
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BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Baltimore MD/Washington DC
510 PM EDT Thu Sep 3 2020

The National Weather Service in Sterling Virginia has issued a

* Tornado Warning for...
  Southeastern Montgomery County in central Maryland...
  Northeastern Prince Georges County in central Maryland...

* Until 545 PM EDT.

* At 510 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Kemp Mill, or near Langley Park, moving east at 30
  mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...For those in the direct path of a tornado touchdown,
           flying debris will be dangerous to those caught without
           shelter. Damage to roofs, siding, and windows may occur.
           Mobile homes may be damaged or destroyed. Tree damage is
           likely.

* This dangerous storm will be near...
  Adelphi around 515 PM EDT.
  College Park and Greenbelt around 520 PM EDT.
  Beltsville and New Carrollton around 525 PM EDT.
  Lanham-Seabrook and Goddard around 530 PM EDT.
  Mitchellville and Woodmore around 535 PM EDT.
  Bowie around 540 PM EDT.

Other locations impacted by this tornadic thunderstorm include Berwyn
Heights, Four Corners, Glenn Dale, Calverton, Wheaton and Silver
Spring.
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BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Baltimore MD/Washington DC
505 PM EDT Thu Sep 3 2020

The National Weather Service in Sterling Virginia has issued a

* Tornado Warning for...
  Baltimore City in northern Maryland...
  Southern Harford County in northern Maryland...
  Southeastern Baltimore County in northern Maryland...

* Until 545 PM EDT.

* At 505 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Baltimore, moving east at 25 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...For those in the direct path of a tornado touchdown,
           flying debris will be dangerous to those caught without
           shelter. Damage to roofs, siding, and windows may occur.
           Mobile homes may be damaged or destroyed. Tree damage is
           likely.

* This dangerous storm will be near...
  Hampton around 515 PM EDT.
  Baltimore and Parkville around 520 PM EDT.
  Carney around 525 PM EDT.
  Perry Hall, Rosedale and Rossville around 530 PM EDT.
  Middle River, Back River, Dundalk, Essex and White Marsh around
  535 PM EDT.
  Bowleys Quarters around 545 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Nottingham, Fullerton, Ruxton, Lutherville, Riderwood, Eudowood,
Chase, Bradshaw, Brooklandville and Eastpoint.
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