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End of July Super Soaker


Ellinwood

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9 minutes ago, ThePhotoGuy said:

That was some heavy rain!!

At first I didn't believe it but the rain gauge is reading 1.85 in the past 35-40 minutes. I checked a couple local weather stations on Weather Underground and they are reading 1.84, 2.0, etc.

WOW!

Still pouring across the Pataspco from you.  

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this is the point where analysis/paralysis sets in.  i'm gonna just sit back and enjoy the fact that i can have the screen door open and listen to rain that lasts for more than the typical 10 minute backyard summer shower.  rain in warm weather > rain in cold weather.

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000
NWUS51 KLWX 281649
LSRLWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1249 PM EDT FRI JUL 28 2017

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

1245 PM     FLASH FLOOD      2 ESE CHEVY CHASE VILLA 38.96N  77.04W
07/28/2017                   DISTRICT OF COLUMB DC   BROADCAST MEDIA

            BREACH DRIVE NORTHWEST CLOSED BETWEEN BROAD BRANCH ROAD
            NORTHWEST AND THE MARYLAND STATE LINE DUE TO HIGH WATER.

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
127 PM EDT FRI JUL 28 2017

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

0124 PM     FLASH FLOOD      1 N LANGLEY PARK        39.00N  76.98W
07/28/2017                   PRINCE GEORGES     MD   EMERGENCY MNGR

            PINEY BRANCH ROAD CLOSED NEAR NEW HAMPSHIRE AVENUE DUE
            TO FLOODING. SLIGO CREEK OUT OF ITS BANKS.


&&

EVENT NUMBER LWX1702555
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243
NWUS51 KLWX 281731
LSRLWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
131 PM EDT FRI JUL 28 2017

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

0111 PM     FLASH FLOOD      GAITHERSBURG            39.14N  77.22W
07/28/2017                   MONTGOMERY         MD   BROADCAST MEDIA

            QUINCE ORCHARD ROAD CLOSED NEAR CLOPPER ROAD DUE TO
            HIGH WATER.


&&

EVENT NUMBER LWX1702556
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BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
212 PM EDT FRI JUL 28 2017

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SPECIAL MARINE WARNING FOR...
  CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD...
  CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER...
  EASTERN BAY...

* UNTIL 345 PM EDT

* AT 211 PM EDT...A THUNDERSTORM CAPABLE OF PRODUCING WATERSPOUTS
  WAS LOCATED NEAR CHESAPEAKE BEACH...MOVING EAST AT 10 KNOTS.

  HAZARD...WATERSPOUTS AND WIND GUSTS 34 KNOTS OR GREATER.

  SOURCE...RADAR INDICATED.

  IMPACT...WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY
           HAZARDOUS SEAS. BOATERS IN SMALL CRAFT COULD BE THROWN
           OVERBOARD BY SUDDENLY HIGHER WINDS AND WAVES CAPSIZING
           THEIR VESSEL.

* LOCATIONS IMPACTED INCLUDE...
  CHOPTANK RIVER...
  TILGHMAN ISLAND...
  BLACKWALNUT POINT...
  CHESAPEAKE BEACH...
  DARES BEACH...
  JAMES ISLAND...
  KNAPPS NARROWS BRIDGE...
  NORTH BEACH...
  AND TAYLORS ISLAND.
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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
224 PM EDT FRI JUL 28 2017

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

0216 PM     FLOOD            1 NE SILVER SPRING      39.01N  77.04W
07/28/2017                   MONTGOMERY         MD   EMERGENCY MNGR

            BROOKVILLE ROAD CLOSED AT GEORGIA AVENUE DUE TO HIGH
            WATER


&&

EVENT NUMBER LWX1702559
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Updated LWX AFD:

Quote

We have launched an 18Z balloon.

Flash flood watch area remains in effect into Saturday
afternoon. Coverage expected to increase tonight with the 
heaviest rainfall as the upper low moves across the forecast
area and the surface low moves over the Delmarva. A storm total
of 2-4+ inches is possible on average over the watch area.

Although FFA extends to Greene County I remain most worried 
about northern VA up to the PA border - as I've seen in writings
this does appear to bear some similarity to Nor'easters and 
makes me think of some of the bigger snowfalls I've seen here 
where the CHO area might get 8" and central MD/eastern WV 20-25."
12Z Euro shows rapid deepening of the low tonight as it moves 
over the Delmarva and strong northeastly flow pushes moisture 
into the northern part the forecast area. Given the rainfall 
that north DC/Montgomery Co. have already received with several 
inches more possible tonight this will bear close watching.

While hydro issues are the primary threat...some severe 
thunderstorm potential does exist...with area places in a 
marginal risk from SPC. The primary threat is isolated strong 
wind gusts due to modest instability and relatively strong shear
profiles. East of I-95 has been placed in a 2% tornado threat. 
We feel spin ups could be a concern given low level helicity 
this evening. This is not in a normal quandrant on the hodograph
given the easterly flow but still bears watching.

 

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