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July Discobs Thread


George BM
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i'm impressed with this system.  did not expect it to be a gully washer like this.  euro was really jumpy the last 2 days.  seems like the short range guidance did pretty well overall.  it shifted the legend band a little each run, but kept it close enough to stay in the game.

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Flash Flood Warning
VAC059-153-600-685-220230-
/O.NEW.KLWX.FF.W.0049.180721T2323Z-180722T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Baltimore MD/Washington DC
723 PM EDT SAT JUL 21 2018

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Warning for...
  The City of Fairfax in northern Virginia...
  Fairfax County in northern Virginia...
  The City of Manassas Park in northern Virginia...
  Southeastern Prince William County in northern Virginia...

* Until 1030 PM EDT.

* At 722 PM EDT, Doppler radar indicated heavy rain across the area.
  Three to four inches of rain has already fallen, and an additional
  two to three inches is expected. Flash flooding is expected to
  begin shortly.

* Some locations that may experience flooding include...
  Centreville, Dale City, Reston, Annandale, Springfield, Fairfax,
  Vienna, Groveton, Mantua, Fort Belvoir, Woodbridge, Quantico, Lake
  Ridge, Burke, Oakton, Chantilly, Lincolnia, Tysons Corner,
  Montclair and Lorton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3869 7707 3868 7711 3862 7712 3860 7722
      3852 7727 3850 7730 3877 7745 3878 7748
      3879 7747 3892 7747 3893 7746 3894 7724

$$

DHOF
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This event is cool because it is pretty darn uncommon to get a (non tropical) low tracking up the east coast in mid summer producing widespread heavy rain and relatively cool temps. This has been a fall-like storm. The rest of the week should also be fun, with several perturbations moving through with a deep southerly flow between the blocking atlantic ridge and the trough/upper low just to the west. Much more summer like with high dews and chances for convection. Quite a few places in the area should see totals the next few days exceed what fell today.

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1 minute ago, MN Transplant said:

Radar looks like the eastern band might be starting to take over.  Might start to wind down over the western burbs in the next hour.

Perhaps the heavy rain... but I think it will still be raining till past ten in the DC metro

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  • WxUSAF unpinned this topic

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