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August 2021 Discussion/Obs


George BM
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1 hour ago, yoda said:
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Baltimore MD/Washington DC
452 AM EDT Fri Aug 20 2021

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Warning for...
  Northwestern Frederick County in north central Maryland...

* Until 800 AM EDT.

* At 452 AM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 1 and 3 inches of rain
  have fallen. The expected rainfall rate is 1 to 2 inches in 1
  hour. Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Frederick...                       Thurmont...
  Walkersville...                    Braddock Heights...
  Clover Hill...                     Wolfsville...
  Myersville...                      Woodsboro...
  Lewistown...                       Bloomfield...
  Utica...                           Middletown In Frederick Md...
  Pleasant Walk...                   Bolivar...

This includes the following Flood Prone Roads:
Lenhart Road near Fishing Creek...
Wilhide Road near Hunting Creek...
Blacks Mill Road at Hessong Bridge Road...
Retreat Road near Glade Creek...
Stottlemeyer Road near Middle Creek...
Brethren Church Road near Catoctin Creek...
Shank Road near Catoctin Creek...
Station Road near Catoctin Creek...

I am in SW Fred Co here is my backyard so far. 
 

B693209B-80B2-4D2A-81D6-EB58EAA7E201.thumb.png.4de08be40b4433b3bc84340a7efd2af1.png

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Woke up at about 3:00 and saw the light to moderate rain on radar. Went back to bed and woke up at 6:30 to absolutely pissing down rain. The water is rushing down the street and my uphill side yard is an inch or two deep. Radar estimate is 1.27" in the last 12 hours; 0.83" in the last 3 hours.

Echoes have enhanced over Burke and it looks like the train is setting up. Wish I could say I'm excited for it, but I really don't need any more rain.

And I really need to get a new gauge.

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1 hour ago, CAPE said:

It is going to be pretty gross for awhile longer.

I’m not as surprised that we’re going to have another 7-10 days of highs in the 80s to low 90s. I am pretty amazed that we might go 2 straight weeks with dew points in the 70s! That’s pretty unusual this late in summer I’d wager.

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yay :axe:

Flood Warning
National Weather Service Baltimore MD/Washington DC
735 AM EDT Fri Aug 20 2021

DCC001-MDC031-033-VAC013-059-510-610-201745-
/O.NEW.KLWX.FA.W.0089.210820T1135Z-210820T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
District of Columbia DC-Montgomery MD-Prince Georges MD-Arlington VA-
Fairfax VA-City of Alexandria VA-City of Falls Church VA-
735 AM EDT Fri Aug 20 2021

The National Weather Service in Sterling Virginia has issued a

* Flood Warning for...
  District of Columbia...
  Southeastern Montgomery County in central Maryland...
  Northwestern Prince Georges County in central Maryland...
  Arlington County in northern Virginia...
  Southeastern Fairfax County in northern Virginia...
  The City of Alexandria in northern Virginia...
  The City of Falls Church in northern Virginia...

* Until 145 PM EDT Friday.

* At 735 AM EDT, Doppler radar indicated heavy rain. Flooding is
  ongoing or expected to begin shortly in the warned area. Between 1
  and 2 inches of rain have fallen.

* Some locations that will experience flooding include...
  Arlington...                       Alexandria...
  Bethesda...                        Annandale...
  Springfield...                     College Park...
  Fort Washington...                 Greenbelt...
  Langley Park...                    Beltsville...
  Fort Hunt...                       Groveton...
  Falls Church...                    Huntington...
  Coral Hills...                     Bladensburg...
  Mantua...                          Fort Belvoir...
  Pimmit Hills...                    National Harbor...

This includes the following Flood Prone Roads:
Military Road at 36th Road at Gulf Branch...
18th Street at Upton Street...
17th Street North at North Buchanan St...
South Troy Street near Long Branch...
West Street near Braddock Road...
Holmes Run Below Lake Barcroft...
Rhode Island Ave NE between 2nd and Capitol...
Beach Dr from Broad Branch Rd to Piney Branch Pkwy...
Woodburn Road at Accotink Creek...
Connecticut Avenue just north of the Beltway...
University Boulevard at Sligo Creek...
Beach Drive along Rock Creek...
Sligo Creek Parkway...


Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
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1 minute ago, mattie g said:

^

I'm going to assume that Burke Road is flooded at the bend, but that's relatively low profile in terms of traffic.

Woodburn Road is probably flooded already too

 

Flood Warning
National Weather Service Baltimore MD/Washington DC
718 AM EDT Fri Aug 20 2021

VAC059-600-201715-
/O.NEW.KLWX.FA.W.0088.210820T1118Z-210820T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fairfax VA-City of Fairfax VA-
718 AM EDT Fri Aug 20 2021

The National Weather Service in Sterling Virginia has issued a

* Flood Warning for...
  Central Fairfax County in northern Virginia...
  The City of Fairfax in northern Virginia...

* Until 115 PM EDT.

* At 718 AM EDT, Doppler radar indicated heavy rain. Flooding is
  ongoing or expected to begin shortly in the warned area. Between 1
  and 2 inches of rain have fallen.

* Some locations that will experience flooding include...
  Centreville...                     Reston...
  Annandale...                       Herndon...
  Fairfax...                         Vienna...
  Falls Church...                    Mantua...
  Pimmit Hills...                    Mclean...
  Potomac...                         Burke...
  Oakton...                          Chantilly...
  Tysons Corner...                   Wolf Trap...
  Great Falls...                     Merrifield...
  Lake Barcroft...                   I66 and I495 Interchange...

This includes the following Flood Prone Roads:
Woodburn Road at Accotink Creek...
Beulah Road at Browns Mill Road at Wolftrap Creek...
Fairfax Boulevard at Oak Street...
Fairfax Boulevard at University Drive...
Pickett Rd at Accotink Creek near Old Pickett Rd...


Additional rainfall amounts of 0.5 to 1 inch are possible in the
warned area.
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@H2O wins

Flash Flood Warning
VAC059-201545-
/O.NEW.KLWX.FF.W.0049.210820T1152Z-210820T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Baltimore MD/Washington DC
752 AM EDT Fri Aug 20 2021

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Warning for...
  North Central Fairfax County in northern Virginia...

* Until 1145 AM EDT.

* At 752 AM EDT, Doppler radar indicated heavy rain across the
  warned area. Between 1 and 3 inches of rain have fallen. The
  expected rainfall rate is 1 to 2 inches in 1 hour. Additional
  rainfall amounts of 1 to 2 inches are possible in the warned area.
  Flash flooding is already occurring.

  HAZARD...Life threatening flash flooding. Heavy rain producing
           flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Annandale...                       Fairfax...
  Vienna...                          Mantua...
  Pimmit Hills...                    Oakton...
  Tysons Corner...                   Wolf Trap...
  Merrifield...                      I66 and I495 Interchange...
  Dunn Loring...                     Belleview...

This includes the following Flood Prone Roads:
Woodburn Road at Accotink Creek...


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3888 7732 3890 7733 3890 7732 3892 7732
      3897 7726 3896 7723 3896 7721 3894 7720
      3891 7719 3889 7720 3887 7720 3884 7721
      3884 7727 3887 7726 3887 7729 3887 7730
      3888 7731

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
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2 minutes ago, yoda said:

@H2O wins

Flash Flood Warning
VAC059-201545-
/O.NEW.KLWX.FF.W.0049.210820T1152Z-210820T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Baltimore MD/Washington DC
752 AM EDT Fri Aug 20 2021

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Warning for...
  North Central Fairfax County in northern Virginia...

* Until 1145 AM EDT.

* At 752 AM EDT, Doppler radar indicated heavy rain across the
  warned area. Between 1 and 3 inches of rain have fallen. The
  expected rainfall rate is 1 to 2 inches in 1 hour. Additional
  rainfall amounts of 1 to 2 inches are possible in the warned area.
  Flash flooding is already occurring.

  HAZARD...Life threatening flash flooding. Heavy rain producing
           flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Annandale...                       Fairfax...
  Vienna...                          Mantua...
  Pimmit Hills...                    Oakton...
  Tysons Corner...                   Wolf Trap...
  Merrifield...                      I66 and I495 Interchange...
  Dunn Loring...                     Belleview...

This includes the following Flood Prone Roads:
Woodburn Road at Accotink Creek...


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3888 7732 3890 7733 3890 7732 3892 7732
      3897 7726 3896 7723 3896 7721 3894 7720
      3891 7719 3889 7720 3887 7720 3884 7721
      3884 7727 3887 7726 3887 7729 3887 7730
      3888 7731

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

Nope, that’s me.  2” and pouring.

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BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Baltimore MD/Washington DC
755 AM EDT Fri Aug 20 2021

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Warning for...
  District of Columbia...
  South Central Montgomery County in central Maryland...
  Northeastern Arlington County in northern Virginia...

* Until noon EDT.

* At 755 AM EDT, Doppler radar indicated Showers producing heavy
  rain across the warned area. Between 1 and 1.5 inches of rain have
  fallen. Additional rainfall amounts of 0.5 to 1.5 inches are
  possible in the warned area. Flash flooding is ongoing or expected
  to begin shortly.

  HAZARD...Life threatening flash flooding. Showers producing
           flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Arlington...                       Bethesda...
  Howard University...               Rosslyn...
  Fort Totten...                     Gallaudet University...
  Takoma Park...                     Chevy Chase...
  Martin`s Additions...              Adams Morgan...
  Georgetown...                      American University...
  Friendship Village...              US Capitol...
  Ballston...                        Silver Spring...
  Chillum...                         Mount Rainier...
  Chevy Chase Village...             Somerset...
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