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George BM

August Discobs 2020

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2 minutes ago, WxUSAF said:

Dang central VA is lit up

I'm jealous. I wanted to get on the rain train. Looks pretty lame up our way. Hopefully tomorrow produces. 

79, cloudy and muggy

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1 minute ago, dailylurker said:

I'm jealous. I wanted to get on the rain train. Looks pretty lame up our way. Hopefully tomorrow produces. 

79, cloudy and muggy

Hrrr still likes central MD later this evening

edit...well 21z did, 22z doesn’t 

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Lots of thunder and lightning the past hour to my north from the cell that straddled the Pa line and slowly lifted north.  Got lol .05" that's it . Flood advisories for Hanover/ Littlestown areas . 

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I heard a very strange roll of thunder about 15 minutes ago, here in Spotsy. It was a longer roaring and building of sound but almost had an engine roaring that went with it. Craziest thunder I’ve ever heard

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Man what a time to be alive.  If 9" of rain wasn't enough, last night we got almost 2" more with that thunderstorm and it looks like we're about to be pounded again. Calvert can't catch a break!   

Has it already been determined whether a wet August correlates well with a dry cold Jan/Feb? 

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16 minutes ago, WxUSAF said:

Howard county force field today with these storms 

Those storms show no signs of weakening yet . I rode the southern edge of a gully washer earlier and have .05" to show for it .

More cells firing west of those. 

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1 minute ago, Mrs.J said:

Ok so filled in pouring over here now. 

Was waiting for that....

Hopefully, you have something on the stove that goes well with torrential rain!

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47 minutes ago, poolz1 said:

Was waiting for that....

Hopefully, you have something on the stove that goes well with torrential rain!

Did not last long. But watching that cell over Leesburg. It has got to be insane there. Have friends just south of Lovettsville just outside of the flash flood warning getting dumped on. 

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Scary wording in that warning. Hope our Leesburg folks are alright 

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Pretty bad out in Leesburg.  Worst part is that this front seems to be with us, maybe into Saturday morning. Thought it was gonna clear out by Friday afternoon.  

Seen this before here where a mass settles over an area and the sponge gets squeezed dumping water over an area.  No wind just straight vertical rain.  

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Here we go again lol

Flood Watch
National Weather Service Baltimore MD/Washington DC
346 AM EDT Fri Aug 7 2020


DCZ001-MDZ004>006-011-013-014-016>018-503>508-VAZ025-026-029-
036>040-050>057-501-502-505>508-072215-
/O.NEW.KLWX.FF.A.0019.200807T1600Z-200808T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
District of Columbia-Frederick MD-Carroll-Northern Baltimore-
Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-
Calvert-Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Southeast Harford-Augusta-Rockingham-Page-Nelson-Albemarle-Greene-
Madison-Rappahannock-Orange-Culpeper-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-Northern Virginia Blue Ridge-
Central Virginia Blue Ridge-
Including the cities of Washington, Frederick, Ballenger Creek,
Eldersburg, Westminster, Reisterstown, Cockeysville, Baltimore,
Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt,
Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate,
Severna Park, Arnold, Odenton, St. Charles, Waldorf,
Lexington Park, California, Chesapeake Beach, Huntingtown,
Dunkirk, North Beach, Lusby, Prince Frederick, Germantown,
Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring,
Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen,
Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Luray,
Shenandoah, Stanley, Lovingston, Charlottesville, Stanardsville,
Madison, Orange, Gordonsville, Culpeper, Dale City, Manassas,
Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale,
Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria,
Falls Church, Falmouth, Fredericksburg, Dahlgren, Warrenton,
Turnbull, Purcellville, Leesburg, Ashburn, Sterling, Big Meadows,
and Wintergreen
346 AM EDT Fri Aug 7 2020

...FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Watch for portions of Maryland, The District of
  Columbia, and Virginia, including the following areas, in
  Maryland, Anne Arundel, Calvert, Carroll, Central and
  Southeast Howard, Central and Southeast Montgomery, Charles,
  Frederick, Northern Baltimore, Northwest Harford, Northwest
  Howard, Northwest Montgomery, Prince Georges, Southeast
  Harford, Southern Baltimore, and St. Marys. The District of
  Columbia. In Virginia, Albemarle, Arlington/Falls
  Church/Alexandria, Augusta, Central Virginia Blue Ridge,
  Culpeper, Eastern Loudoun, Fairfax, Greene, King George,
  Madison, Nelson, Northern Fauquier, Northern Virginia Blue
  Ridge, Orange, Page, Prince William, Rappahannock, Rockingham,
  Southern Fauquier, Spotsylvania, Stafford, and Western
  Loudoun.

* From noon EDT today through late tonight

* Scattered slow moving showers and thunderstorms are expected
  this afternoon and tonight which may pose a risk of flash
  flooding.

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From Mt Holly AFD this morning-

It looks like two primary rounds of convection remaining. The first opportunity is for the remainder of the overnight through mid morning today. This comes thanks to another convectively enhanced vorticity impulse riding up along the stalled frontal boundary. Radar overnight has been very unimpressive so far, as it was yesterday afternoon and evening. Strongly suspect that the unexpectedly vigorous MCS on Thursday morning really did a number on the atmosphere, and that we still have not recovered.

Mesoanalysis indicates at least some modest amounts of elevated instability in place early this morning, and plentiful low level moisture with PWATs from 1.5 to 1.9 inches, highest to the south. Shear is weak, and storm motions are very slow from the southwest. So heavy rain remains the greatest concern through the morning. Quite a bit of uncertainty in how widespread this round of convection will be given concerns about the instability; so far it is struggling to get underway, but will wait awhile longer before cutting PoPs for the coming hours. Where storms do develop, flash flooding remains a possibility given the slow storm motions, possibility of training storms, and saturated ground. The second opportunity for convection comes this afternoon and evening, into the early overnight. This time, the trigger will be a combination of the approaching trough from the west as well as a little more energy streaming up from the southwest.

 

The bolded part is interesting, That was intense(and unexpected) here, and it expanded/strengthened as it moved towards coastal NJ.

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