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Kmlwx

2020 Mid-Atlantic Severe Weather - General Thread

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BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Baltimore MD/Washington DC
443 PM EDT Thu Sep 3 2020

The National Weather Service in Sterling Virginia has issued a

* Tornado Warning for...
  South central Howard County in central Maryland...
  Southeastern Montgomery County in central Maryland...
  North central Prince Georges County in central Maryland...

* Until 515 PM EDT.

* At 443 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over North Potomac, or over Gaithersburg, moving east
  at 40 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...
  Redland around 450 PM EDT.
  Olney, North Bethesda, North Kensington, South Kensington and
  Rossmoor around 455 PM EDT.
  Aspen Hill, White Oak, Kemp Mill, Forest Glen and Wheaton-Glenmont
  around 500 PM EDT.
  Fairland, Adelphi, Colesville and Hillandale around 505 PM EDT.
  College Park, Greenbelt and Beltsville around 510 PM EDT.
  Laurel and Savage-guilford around 515 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Fulton, Garrett Park, Derwood, Spencerville, Cloverly, Calverton,
Washington Grove, Ednor, Ashton and Scaggsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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

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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:

Interestingly - I was hearing thunder WAY out ahead of this storm. Farther than usual. 

Same. Been hearing distant thunder for 15-20mins already. 

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1 minute ago, Kmlwx said:

Is LWX in SAILS? Would think they'd use it during this. 

They don't appear to be.

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31 minutes ago, Eskimo Joe said:

19z HRRR says this is it. Everything behind us in WV fizzles out.

 

2 minutes ago, losetoa6 said:

Hrrr has a nice cell near DC around 0z. Round 2 baby

:lol:

ETA:  @losetoa6 added it was the 20z run after I quoted these 2 posts FYI

  • Weenie 1

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I'm in Alexandria, near the Fairfax County line with Alexandria City, and I can hear the thunder from the line of storms going through Bethesda and Reston and further north.  I've actually been hearing thunder for probably the last half hour or so.

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Just now, Kmlwx said:

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

LSRs can be delayed during warning mode. We may see some getting populated shortly.

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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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