Alert archive / Virginia / River Flood Warnings in 2018

River Flood Warning 21, NWS Baltimore/Washington

May 17, 2018Loudoun County, Virginia; Montgomery County, Maryland

NWS Baltimore/Washington issued this river flood warning at May 17, 2018, 3:44 PM EDT for Loudoun County, Virginia; Montgomery County, Maryland. It took effect at May 18, 2018, 2:00 AM EDT. It was in force for 4 days.

The area

The outline as issued.

The facts

Issued
May 17, 2018, 3:44 PM EDT (19:44 UTC)
In effect from
May 18, 2018, 2:00 AM EDT
Expired
May 21, 2018, 5:34 PM EDT
In force
4 days
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon
Flood severity
Moderate

Counties Montgomery County, MD, Loudoun County, VA

The radar

The Sterling radar (KLWX), 18 km from the middle of the area, began a volume at 19:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Potomac River at Edwards Ferry (EDFM2). The gauge peaked at 17.86 ft at May 20, 2018, 11:00 AM EDT.

actionminormoderate101505/1705/1805/1905/2005/2105/22
Action stage
12.25 ft
Minor stage
15 ft
Moderate stage
17 ft
Major stage
24 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01644148, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

149 
WGUS41 KLWX 171944
FLWLWX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Baltimore MD/Washington DC
344 PM EDT Thu May 17 2018

...The National Weather Service in Sterling Va has issued a flood 
warning for the following rivers in Maryland...Virginia... 

  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC031-VAC059-107-180343-
/O.NEW.KLWX.FL.W.0022.180518T2300Z-000000T0000Z/
/BRKM2.2.ER.180518T2300Z.180520T1800Z.000000T0000Z.NO/
344 PM EDT Thu May 17 2018

The National Weather Service in Sterling Va has issued a
* Flood Warning for 
  The Potomac River at Little Falls.
* From Friday evening until further notice.
* At 3 PM Thursday the stage was 7.7 feet and steady.
* Flood stage is 10.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by early tomorrow evening and 
  continue to rise to near 13.7 feet by mid Sunday afternoon. 
  Additional rises are possible thereafter.
* Impact...At 14.0 feet...Significant portions of the C&O Canal 
  towpath are flooded. The Blockhouse Point Park is flooded. Water 
  reaches the retaining wall at Overlook 1 at Great Falls National 
  Park but does not overtop it.
* Flood history...This crest compares to a previous crest of 12.8 feet
  on Mar 15 2010.  

&&


River        Flood    Observed          8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time        Thu  Fri  Fri   Stg Day Time

Potomac River
Little Falls  10.0  7.7 Thu 3 PM        8.2  8.5  8.9  13.7 Sun 2 PM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$
16 follow-up statements
582 
WGUS81 KLWX 180210
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
1010 PM EDT Thu May 17 2018

...The flood warning continues for the following rivers in 
Maryland...West Virginia...Virginia...
 
  Potomac River at Paw Paw affecting Allegany...Hampshire and Morgan 
  Counties 
  Potomac River at Shepherdstown affecting Washington...Berkeley and 
  Jefferson Counties 
  Potomac River at Harpers Ferry affecting Washington and Jefferson 
  Counties 
  Potomac River at Point of Rocks affecting Frederick and Loudoun 
  Counties 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC001-WVC027-065-181409-
/O.EXT.KLWX.FL.W.0017.180519T1300Z-180520T2100Z/
/PAWW2.1.ER.180519T1300Z.180520T0600Z.180520T1500Z.NO/
1010 PM EDT Thu May 17 2018

...Flood Warning extended until Sunday afternoon...
The Flood Warning continues for
  The Potomac River at Paw Paw.
* From late Saturday morning until Sunday afternoon.
* At 9 PM Thursday the stage was 17.0 feet.
* Flood stage is 25.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by late Saturday morning and 
  crest near 26.7 feet by early Sunday morning. The river will fall 
  below flood stage by late Sunday morning.
* Impact...At 26.0 feet...Water covers an access road on the West 
  Virginia side.

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Fri  Fri   Stg Day Time

Potomac River
Paw Paw       25.0 17.0 Thu 9 PM  19.0 21.0 21.9 22.3  26.7 Sun 2 AM 
&&

LAT...LON 3956 7857 3956 7850 3965 7843 3965 7832
      3949 7844 3950 7856 3950 7861   

$$

MDC043-WVC003-037-181409-
/O.EXT.KLWX.FL.W.0018.180518T2200Z-000000T0000Z/
/SHEW2.2.ER.180518T2200Z.180520T1200Z.000000T0000Z.NO/
1010 PM EDT Thu May 17 2018

...Flood Warning extended until further notice...
The Flood Warning continues for
  The Potomac River at Shepherdstown.
* From early Friday evening until further notice.
* At 9 PM Thursday the stage was 10.4 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by early Friday evening and 
  crest near 22.5 feet by Sunday morning.
* Impact...At 22.0 feet...Water approaches homes on the West Virginia
  side of the river near Shepherdstown, and impacts are also observed
  on the Maryland side, not just to the C and O Canal towpath, but also 
  to roads and structures.

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Fri  Fri   Stg Day Time

Potomac River
Shepherdstown 15.0 10.4 Thu 9 PM  10.8 12.1 13.5 15.5  22.5 Sun 8 AM 
&&

LAT...LON 3958 7781 3950 7776 3941 7770 3939 7779
      3950 7789 3956 7791             

$$

MDC043-WVC037-181409-
/O.EXT.KLWX.FL.W.0019.180519T1500Z-000000T0000Z/
/HFEW2.1.ER.180519T1500Z.180520T1200Z.000000T0000Z.NO/
1010 PM EDT Thu May 17 2018

...Flood Warning extended until further notice...
The Flood Warning continues for
  The Potomac River at Harpers Ferry.
* From late Saturday morning until further notice.
* At 9 PM Thursday the stage was 10.7 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by late Saturday morning and 
  crest near 20.2 feet by Sunday morning.
* Impact...At 20.5 feet...Much of the old federal armory site in 
  historic Harpers Ferry is flooded. Backwaters on the Shenandoah 
  flood virtually all areas below the retaining wall and elevated W and P
  Railroad, and are approaching Shenandoah Street. No buildings are 
  impacted.
* Flood history...This crest compares to a previous crest of 20.8 feet
  on Mar 15 2010.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Fri  Fri   Stg Day Time

Potomac River
Harpers Ferry 18.0 10.7 Thu 9 PM  11.5 12.5 13.8 15.2  20.2 Sun 8 AM 
&&

LAT...LON 3934 7767 3931 7769 3931 7776 3939 7779
      3941 7770 3938 7771 3935 7770   

$$

MDC021-VAC107-181409-
/O.EXT.KLWX.FL.W.0020.180519T0000Z-000000T0000Z/
/PORM2.2.ER.180519T0000Z.180520T1800Z.000000T0000Z.NO/
1010 PM EDT Thu May 17 2018

...Flood Warning extended until further notice...
The Flood Warning continues for
  The Potomac River at Point of Rocks.
* From early Friday evening until further notice.
* At 9 PM Thursday the stage was 10.5 feet.
* Flood stage is 16.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by early Friday evening and 
  crest near 24.1 feet by mid Sunday afternoon.
* Impact...At 25.0 feet...Water reaches outbuildings on the Loudoun 
  County side of the river near Point of Rocks.

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Fri  Fri   Stg Day Time

Potomac River
Point of Rock 16.0 10.5 Thu 9 PM  11.8 12.7 14.2 16.0  24.1 Sun 2 PM 
&&

LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
      3920 7754 3927 7760 3930 7770   

$$

MDC031-VAC107-181409-
/O.EXT.KLWX.FL.W.0021.180518T1300Z-000000T0000Z/
/EDFM2.2.ER.180518T1300Z.180520T1800Z.000000T0000Z.UU/
1010 PM EDT Thu May 17 2018

...Flood Warning extended until further notice...
The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* From late tomorrow morning  until further notice.
* At 10 PM Thursday the stage was 13.8 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by late Friday morning and 
  crest near 22.0 feet by mid Sunday afternoon.
* Impact...At 24.0 feet...Water reaches the first floor ceiling at 
  Whites Ferry store. Significant portions of the C and O Canal towpath 
  are flooded. Backwater flooding is affecting homes on the Loudoun 
  County side of the river near Broad Run in Sterling.
* Flood history...This crest compares to a previous crest of 21.1 feet
  on May 17 2014.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Fri  Fri   Stg Day Time

Potomac River
Edwards Ferry 15.0 13.8 Thu 10 PM 13.9 15.0 15.7 17.0  22.0 Sun 2 PM 
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$

MDC031-VAC059-107-181409-
/O.EXT.KLWX.FL.W.0022.180519T0700Z-000000T0000Z/
/BRKM2.2.ER.180519T0700Z.180520T1800Z.000000T0000Z.NO/
1010 PM EDT Thu May 17 2018

...Flood Warning extended until further notice...
The Flood Warning continues for
  The Potomac River at Little Falls.
* From early Saturday morning until further notice.
* At 10 PM Thursday the stage was 7.9 feet.
* Flood stage is 10.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by early Saturday morning and 
  continue to rise to near 12.7 feet by mid Sunday afternoon. 
  Additional rises are possible thereafter.
* Impact...At 12.0 feet...The C and O Canal overflows at the Great Falls 
  Tavern. Water covers the towpath in many areas.
* Flood history...This crest compares to a previous crest of 11.7 feet
  on May 18 2014.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Fri  Fri   Stg Day Time

Potomac River
Little Falls  10.0  7.9 Thu 10 PM  7.9  8.1  8.7  9.3  12.7 Sun 8 PM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$
455 
WGUS81 KLWX 180747
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
347 AM EDT Fri May 18 2018

...The flood warning continues for the following rivers in 
Maryland...Virginia...
 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC031-VAC107-181946-
/O.EXT.KLWX.FL.W.0021.180518T2100Z-000000T0000Z/
/EDFM2.2.ER.180518T2100Z.180520T1800Z.000000T0000Z.UU/
347 AM EDT Fri May 18 2018

...Flood Warning extended until further notice...
The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* From late this afternoon until further notice.
* At 3 AM Friday the stage was 13.7 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by late this afternoon and crest 
  near 21.2 feet by mid Sunday afternoon.
* Impact...At 20.0 feet...The basements of the Edwards Ferry 
  Lockhouse and Rileys Lockhouse are flooded. Backwater flooding may 
  affect homes on the Loudoun County side of the river near Broad Run
  in Sterling.
* Flood history...This crest compares to a previous crest of 21.1 feet
  on May 17 2014.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Sat  Sat   Stg Day Time

Potomac River
Edwards Ferry 15.0 13.7 Fri 3 AM  14.4 15.4 16.9 18.4  21.2 Sun 2 PM 
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$
144 
WGUS81 KLWX 181406
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
1006 AM EDT Fri May 18 2018

...The flood warning continues for the following rivers in 
Maryland...Virginia...
 
  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC031-VAC059-107-190205-
/O.EXT.KLWX.FL.W.0022.180520T1200Z-000000T0000Z/
/BRKM2.1.ER.180520T1200Z.180521T0000Z.000000T0000Z.NO/
1006 AM EDT Fri May 18 2018

...Flood Warning extended until further notice...
The Flood Warning continues for
  The Potomac River at Little Falls.
* From Sunday morning until further notice.
* At 10 AM Friday the stage was 7.9 feet.
* Flood stage is 10.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by Sunday morning and crest near 
  10.3 feet by early Monday morning.
* Impact...At 10.0 feet...Water begins to overflow the banks into low
  lying areas on the Maryland side of the river near Little Falls.
* Flood history...This crest compares to a previous crest of 10.3 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Sat  Sat   Stg Day Time

Potomac River
Little Falls  10.0  7.9 Fri 10 AM  7.8  8.0  8.5  9.0  10.3 Mon 2 AM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$
053 
WGUS81 KLWX 182015
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
415 PM EDT Fri May 18 2018

...The flood warning continues for the following rivers in 
Maryland...West Virginia...Virginia...
 
  Potomac River at Shepherdstown affecting Washington...Berkeley and 
  Jefferson Counties 
  Potomac River at Point of Rocks affecting Frederick and Loudoun 
  Counties 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC043-WVC003-037-190816-
/O.EXT.KLWX.FL.W.0018.000000T0000Z-180521T2000Z/
/SHEW2.1.ER.180518T2100Z.180520T1800Z.180521T1400Z.NO/
415 PM EDT Fri May 18 2018

...Flood Warning extended until Monday afternoon...
The Flood Warning continues for
  The Potomac River at Shepherdstown.
* From late this afternoon until Monday afternoon.
* At 3 PM Friday the stage was 15.0 feet.
* Flood stage is 15.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by late this afternoon and crest 
  near 17.7 feet by mid Sunday afternoon. The river will fall below 
  flood stage by late Monday morning.
* Impact...At 19.0 feet...Water covers the pedestrian bridge adjacent
  to the Shepherdstown boat ramp. Significant portions of the C&O 
  Canal towpath are flooded.

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Sat  Sat   Stg Day Time

Potomac River
Shepherdstown 15.0 15.0 Fri 3 PM  15.0 16.0 16.4 16.1  17.7 Sun 2 PM 
&&

LAT...LON 3958 7781 3950 7776 3941 7770 3939 7779
      3950 7789 3956 7791             

$$

MDC021-VAC107-190816-
/O.EXT.KLWX.FL.W.0020.180519T0800Z-180521T1923Z/
/PORM2.1.ER.180519T0800Z.180520T1800Z.180521T1323Z.NO/
415 PM EDT Fri May 18 2018

...Flood Warning extended until Monday afternoon...
The Flood Warning continues for
  The Potomac River at Point of Rocks.
* From overnight tonight until Monday afternoon.
* At 4 PM Friday the stage was 13.3 feet.
* Flood stage is 16.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage overnight tonight and crest 
  near 17.8 feet by mid Sunday afternoon. The river will fall below 
  flood stage by late Monday morning.
* Impact...At 18.0 feet...Water approaches structures at the 
  Brunswick campground.
* Flood history...This crest compares to a previous crest of 18.2 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Sat  Sat   Stg Day Time

Potomac River
Point of Rock 16.0 13.3 Fri 4 PM       14.4 15.8 16.3  17.8 Sun 2 PM 
&&

LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
      3920 7754 3927 7760 3930 7770   

$$

MDC031-VAC107-190816-
/O.EXT.KLWX.FL.W.0021.180518T2100Z-000000T0000Z/
/EDFM2.2.ER.180518T2100Z.180520T1200Z.000000T0000Z.UU/
415 PM EDT Fri May 18 2018

...Flood Warning extended until further notice...
The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* From late this afternoon until further notice.
* At 4 PM Friday the stage was 14.4 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by late this afternoon and crest 
  near 18.1 feet by mid Sunday afternoon.
* Impact...At 18.5 feet...The parking lot at Edwards Ferry is 
  completely covered by water. The parking lot at Seneca is partially
  flooded.
* Flood history...This crest compares to a previous crest of 17.6 feet
  on Feb 5 2016.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Sat  Sat   Stg Day Time

Potomac River
Edwards Ferry 15.0 14.4 Fri 4 PM  15.0 14.6 15.5 16.4  18.1 Sun 2 PM 
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$

MDC031-VAC059-107-190816-
/O.EXT.KLWX.FL.W.0022.180520T1200Z-180521T0600Z/
/BRKM2.1.ER.180520T1200Z.180520T1800Z.180521T0000Z.NO/
415 PM EDT Fri May 18 2018

...Flood Warning extended until late Sunday night...
The Flood Warning continues for
  The Potomac River at Little Falls.
* From Sunday morning until late Sunday night.
* At 4 PM Friday the stage was 7.9 feet.
* Flood stage is 10.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by Sunday morning and crest near 
  10.1 feet by mid Sunday afternoon. The river will fall below flood 
  stage by early Sunday evening.
* Impact...At 10.0 feet...Water begins to overflow the banks into low
  lying areas on the Maryland side of the river near Little Falls.
* Flood history...This crest compares to a previous crest of 10.3 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Fri  Fri  Sat  Sat   Stg Day Time

Potomac River
Little Falls  10.0  7.9 Fri 4 PM        8.2  8.5  9.1  10.1 Sun 2 PM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$
600 
WGUS81 KLWX 190224
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
1024 PM EDT Fri May 18 2018

...The flood warning continues for the following rivers in 
Maryland...West Virginia...Virginia...
 
  Potomac River at Shepherdstown affecting Washington...Berkeley and 
  Jefferson Counties 
  Potomac River at Point of Rocks affecting Frederick and Loudoun 
  Counties 
  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties 
 
...The flood warning continues for the following rivers in 
Maryland...Virginia...
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC043-WVC003-037-191423-
/O.EXT.KLWX.FL.W.0018.000000T0000Z-180521T2300Z/
/SHEW2.1.ER.000000T0000Z.180520T1800Z.180521T1700Z.NO/
1024 PM EDT Fri May 18 2018

...Flood Warning extended until Monday evening...
The Flood Warning continues for
  The Potomac River at Shepherdstown.
* Until Monday evening.
* At 9 PM Friday the stage was 15.5 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 PM Friday was 15.6 feet.
* Forecast...The river will continue rising to near 18.4 feet by mid 
  Sunday afternoon. The river will fall below flood stage early 
  Monday afternoon.
* Impact...At 19.0 feet...Water covers the pedestrian bridge adjacent
  to the Shepherdstown boat ramp. Significant portions of the C&O 
  Canal towpath are flooded.

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sat  Sat   Stg Day Time

Potomac River
Shepherdstown 15.0 15.5 Fri 9 PM  16.1 16.1 16.7 17.3  18.4 Sun 2 PM 
&&

LAT...LON 3958 7781 3950 7776 3941 7770 3939 7779
      3950 7789 3956 7791             

$$

MDC021-VAC107-191423-
/O.EXT.KLWX.FL.W.0020.180519T1030Z-180521T2334Z/
/PORM2.1.ER.180519T1030Z.180520T1800Z.180521T1734Z.NO/
1024 PM EDT Fri May 18 2018

...Flood Warning extended until Monday evening...
The Flood Warning continues for
  The Potomac River at Point of Rocks.
* From tomorrow morning until Monday evening.
* At 10 PM Friday the stage was 14.8 feet.
* Flood stage is 16.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by Saturday morning and crest 
  near 18.7 feet by mid Sunday afternoon. The river will fall below 
  flood stage by early Monday afternoon.
* Impact...At 18.0 feet...Water approaches structures at the 
  Brunswick campground.
* Flood history...This crest compares to a previous crest of 18.2 feet
  on Oct 31 2012.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sat  Sat   Stg Day Time

Potomac River
Point of Rock 16.0 14.8 Fri 10 PM 15.4 16.2 16.5 17.4  18.7 Sun 2 PM 
&&

LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
      3920 7754 3927 7760 3930 7770   

$$

MDC031-VAC107-191423-
/O.CON.KLWX.FL.W.0021.000000T0000Z-000000T0000Z/
/EDFM2.2.ER.180519T0000Z.180520T1800Z.000000T0000Z.UU/
1024 PM EDT Fri May 18 2018

The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until further notice.
* At 10 PM Friday the stage was 15.3 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  10 PM Friday was 15.3 feet.
* Forecast...The river will continue rising to near 18.6 feet by mid 
  Sunday afternoon then begin falling.
* Impact...At 18.5 feet...The parking lot at Edwards Ferry is 
  completely covered by water. The parking lot at Seneca is partially
  flooded.
* Flood history...This crest compares to a previous crest of 17.6 feet
  on Feb 5 2016.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sat  Sat   Stg Day Time

Potomac River
Edwards Ferry 15.0 15.3 Fri 10 PM 15.7 16.6 17.3 17.7  18.6 Sun 2 PM 
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$

MDC031-VAC059-107-191423-
/O.EXT.KLWX.FL.W.0022.180520T0600Z-180521T1500Z/
/BRKM2.1.ER.180520T0600Z.180521T0000Z.180521T0900Z.NO/
1024 PM EDT Fri May 18 2018

...Flood Warning extended until Monday morning...
The Flood Warning continues for
  The Potomac River at Little Falls.
* From early Sunday morning until Monday morning.
* At 10 PM Friday the stage was 8.3 feet.
* Flood stage is 10.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by early Sunday morning and crest
  near 10.3 feet by early Sunday evening. The river will fall below 
  flood stage by early Monday morning.
* Impact...At 10.0 feet...Water begins to overflow the banks into low
  lying areas on the Maryland side of the river near Little Falls.
* Flood history...This crest compares to a previous crest of 10.3 feet
  on Oct 31 2012.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sat  Sat   Stg Day Time

Potomac River
Little Falls  10.0  8.3 Fri 10 PM  8.6  9.0  9.5  9.8  10.3 Sun 8 PM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$
088 
WGUS81 KLWX 190732
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
332 AM EDT Sat May 19 2018

...The flood warning continues for the following rivers in 
Maryland...Virginia...
 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC031-VAC107-191931-
/O.EXT.KLWX.FL.W.0021.000000T0000Z-180522T0500Z/
/EDFM2.2.ER.180519T0000Z.180520T1800Z.180521T2300Z.UU/
332 AM EDT Sat May 19 2018

...Flood Warning extended until late Monday night...
The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until late Monday night.
* At 3 AM Saturday the stage was 16.1 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  3 AM Saturday was 16.1 feet.
* Forecast...The river will continue rising to near 18.9 feet by 
  mid-afternoon tomorrow. The river will fall below flood stage early
  Monday evening.
* Impact...At 18.5 feet...The parking lot at Edwards Ferry is 
  completely covered by water. The parking lot at Seneca is partially
  flooded.
* Flood history...This crest compares to a previous crest of 19.8 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sun  Sun   Stg Day Time

Potomac River
Edwards Ferry 15.0 16.1 Sat 3 AM  17.3 17.8 18.2 18.6  18.9 Sun 2 PM 
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$
156 
WGUS81 KLWX 191410
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
1010 AM EDT Sat May 19 2018

...The flood warning continues for the following rivers in 
Maryland...Virginia...
 
  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC031-VAC059-107-200209-
/O.EXT.KLWX.FL.W.0022.180520T1200Z-180521T0800Z/
/BRKM2.1.ER.180520T1200Z.180520T1800Z.180521T0200Z.NO/
1010 AM EDT Sat May 19 2018

...Flood Warning extended until late Sunday night...
The Flood Warning continues for
  The Potomac River at Little Falls.
* From tomorrow morning until late Sunday night.
* At 10 AM Saturday the stage was 9.5 feet.
* Flood stage is 10.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by tomorrow morning and crest 
  near 10.1 feet by mid-afternoon tomorrow. The river will fall below
  flood stage by late tomorrow evening.
* Impact...At 10.0 feet...Water begins to overflow the banks into low
  lying areas on the Maryland side of the river near Little Falls.
* Flood history...This crest compares to a previous crest of 10.3 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sun  Sun   Stg Day Time

Potomac River
Little Falls  10.0  9.5 Sat 10 AM  9.7  9.9  9.9 10.0  10.1 Sun 2 PM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$
943 
WGUS81 KLWX 191937
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
337 PM EDT Sat May 19 2018

...The flood warning continues for the following rivers in 
Maryland...Virginia...
 
  Potomac River at Point of Rocks affecting Frederick and Loudoun 
  Counties 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties 
 
...The flood warning continues for the following rivers in 
Maryland...West Virginia...
  Potomac River at Shepherdstown affecting Washington...Berkeley and
  Jefferson Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC043-WVC003-037-200737-
/O.CON.KLWX.FL.W.0018.000000T0000Z-180521T1400Z/
/SHEW2.1.ER.000000T0000Z.180520T1200Z.180521T0800Z.NO/
337 PM EDT Sat May 19 2018

The Flood Warning continues for
  The Potomac River at Shepherdstown.
* Until Monday morning.
* At 2 PM Saturday the stage was 15.5 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  2 PM Saturday was 15.5 feet.
* Forecast...The river will continue rising to near 17.6 feet by 
  Sunday morning. The river will fall below flood stage early 
  Monday morning.
* Impact...At 19.0 feet...Water covers the pedestrian bridge adjacent
  to the Shepherdstown boat ramp. Significant portions of the C&O 
  Canal towpath are flooded.

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sun  Sun   Stg Day Time

Potomac River
Shepherdstown 15.0 15.5 Sat 2 PM       16.1 17.1 17.6  17.6 Sun 2 PM 
&&

LAT...LON 3958 7781 3950 7776 3941 7770 3939 7779
      3950 7789 3956 7791             

$$

MDC021-VAC107-200737-
/O.EXT.KLWX.FL.W.0020.000000T0000Z-180521T1400Z/
/PORM2.1.ER.180519T2200Z.180520T1200Z.180521T0800Z.NO/
337 PM EDT Sat May 19 2018

...Flood Warning extended until Monday morning...
The Flood Warning continues for
  The Potomac River at Point of Rocks.
* From early this evening until Monday morning.
* At 3 PM Saturday the stage was 15.8 feet.
* Flood stage is 16.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by early this evening and crest 
  near 17.4 feet Sunday morning. The river will fall below flood
  stage by early Monday morning.
* Impact...At 17.0 feet...Water enters the comfort station at the 
  Brunswick boat ramp parking area.
* Flood history...This crest compares to a previous crest of 18.2 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sun  Sun   Stg Day Time

Potomac River
Point of Rock 16.0 15.8 Sat 3 PM  16.0 16.4 17.0 17.4  17.4 Sun 8 AM 
&&

LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
      3920 7754 3927 7760 3930 7770   

$$

MDC031-VAC107-200737-
/O.EXT.KLWX.FL.W.0021.000000T0000Z-180522T0105Z/
/EDFM2.2.ER.180519T0000Z.180520T1200Z.180521T1905Z.UU/
337 PM EDT Sat May 19 2018

...Flood Warning extended until Monday evening...
The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until Monday evening.
* At 3 PM Saturday the stage was 17.1 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  3 PM Saturday was 17.2 feet.
* Forecast...The river will continue rising to near 17.9 feet by 
  Sunday morning. The river will fall below flood stage mid Monday 
  afternoon.
* Impact...At 18.5 feet...The parking lot at Edwards Ferry is 
  completely covered by water. The parking lot at Seneca is partially
  flooded.
* Flood history...This crest compares to a previous crest of 17.6 feet
  on Feb 5 2016.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sun  Sun   Stg Day Time

Potomac River
Edwards Ferry 15.0 17.1 Sat 3 PM       17.3 17.7 17.9  17.9 Sun 2 PM 
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$

MDC031-VAC059-107-200737-
/O.EXT.KLWX.FL.W.0022.180520T1800Z-180521T0000Z/
/BRKM2.1.ER.180520T1800Z.180520T1800Z.180520T1800Z.NO/
337 PM EDT Sat May 19 2018

...Flood Warning extended until Sunday evening...
The Flood Warning continues for
  The Potomac River at Little Falls.
* From Sunday afternoon until Sunday evening.
* At 3 PM Saturday the stage was 9.6 feet.
* Flood stage is 10.0 feet.
* Minor flooding is forecast.
* Forecast...Rise to flood stage and crest near 10.0 feet 
  on Sunday afternoon. The river will fall below flood stage by Sunday
  evening.
* Impact...At 10.0 feet...Water begins to overflow the banks into low
  lying areas on the Maryland side of the river near Little Falls.
* Flood history...This crest compares to a previous crest of 10.3 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sat  Sat  Sun  Sun   Stg Day Time

Potomac River
Little Falls  10.0  9.6 Sat 3 PM        9.6  9.7  9.9  10.0 Sun 2 PM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$
581 
WGUS81 KLWX 200203
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
1003 PM EDT Sat May 19 2018

...The flood warning continues for the following rivers in 
Maryland...West Virginia...Virginia...
 
  Potomac River at Shepherdstown affecting Washington...Berkeley and 
  Jefferson Counties 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
 
...The flood warning continues for the following rivers in 
Maryland...Virginia...
  Potomac River at Point of Rocks affecting Frederick and Loudoun 
  Counties 
  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC043-WVC003-037-201403-
/O.EXT.KLWX.FL.W.0018.000000T0000Z-180521T1300Z/
/SHEW2.1.ER.000000T0000Z.180520T1200Z.180521T0700Z.NO/
1003 PM EDT Sat May 19 2018

...Flood Warning extended until Monday morning...
The Flood Warning continues for
  The Potomac River at Shepherdstown.
* Until Monday morning.
* At 9 PM Saturday the stage was 16.5 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 PM Saturday was 16.5 feet.
* Forecast...The river will continue rising to near 17.4 feet by 
  Sunday morning. The river will fall below flood stage early 
  Monday morning.
* Impact...At 16.0 feet...Water goes over the banks of the Potomac 
  near the mouth of the Opequon Creek.

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Sun  Sun   Stg Day Time

Potomac River
Shepherdstown 15.0 16.5 Sat 9 PM  16.9 17.4 17.4 16.7  17.4 Sun 8 AM 
&&

LAT...LON 3958 7781 3950 7776 3941 7770 3939 7779
      3950 7789 3956 7791             

$$

MDC021-VAC107-201403-
/O.CON.KLWX.FL.W.0020.000000T0000Z-180521T1400Z/
/PORM2.1.ER.000000T0000Z.180520T1200Z.180521T0800Z.NO/
1003 PM EDT Sat May 19 2018

The Flood Warning continues for
  The Potomac River at Point of Rocks.
* Until Monday morning.
* At 9 PM Saturday the stage was 16.3 feet.
* Flood stage is 16.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 PM Saturday was 16.3 feet.
* Forecast...The river will continue rising to near 17.4 feet by 
  Sunday morning. The river will fall below flood stage early 
  Monday morning.
* Impact...At 17.0 feet...Water enters the comfort station at the 
  Brunswick boat ramp parking area.
* Flood history...This crest compares to a previous crest of 18.2 feet
  on Oct 31 2012.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Sun  Sun   Stg Day Time

Potomac River
Point of Rock 16.0 16.3 Sat 9 PM  16.9 17.4 17.4 17.1  17.4 Sun 2 PM 
&&

LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
      3920 7754 3927 7760 3930 7770   

$$

MDC031-VAC107-201403-
/O.EXT.KLWX.FL.W.0021.000000T0000Z-180522T0000Z/
/EDFM2.2.ER.180519T0000Z.180520T1800Z.180521T1800Z.UU/
1003 PM EDT Sat May 19 2018

...Flood Warning extended until Monday evening...
The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until Monday evening.
* At 9 PM Saturday the stage was 17.4 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 PM Saturday was 17.4 feet.
* Forecast...The river will continue rising to near 18.0 feet by 
  Sunday afternoon. The river will fall below flood stage Monday 
  afternoon.
* Impact...At 18.5 feet...The parking lot at Edwards Ferry is 
  completely covered by water. The parking lot at Seneca is partially
  flooded.
* Flood history...This crest compares to a previous crest of 17.6 feet
  on Feb 5 2016.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Sun  Sun   Stg Day Time

Potomac River
Edwards Ferry 15.0 17.4 Sat 9 PM  17.6 17.9 18.0 17.7  18.0 Sun 2 PM 
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$

MDC031-VAC059-107-201403-
/O.CON.KLWX.FL.W.0022.180520T1800Z-180521T0000Z/
/BRKM2.1.ER.180520T1800Z.180520T1800Z.180520T1800Z.NO/
1003 PM EDT Sat May 19 2018

The Flood Warning continues for
  The Potomac River at Little Falls.
* From Sunday afternoon until Sunday evening.
* At 10 PM Saturday the stage was 9.6 feet.
* Flood stage is 10.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage and crest near 10.0 feet on Sunday
  afternoon. The river will fall below flood stage by Sunday evening.
* Impact...At 10.0 feet...Water begins to overflow the banks into low
  lying areas on the Maryland side of the river near Little Falls.
* Flood history...This crest compares to a previous crest of 10.3 feet
  on Oct 31 2012.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Sun  Sun   Stg Day Time

Potomac River
Little Falls  10.0  9.6 Sat 10 PM  9.7  9.8 10.0  9.9  10.0 Sun 2 PM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$
983 
WGUS81 KLWX 200814
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
414 AM EDT Sun May 20 2018

...The flood warning continues for the following rivers in 
Maryland...Virginia...
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC031-VAC107-202013-
/O.CON.KLWX.FL.W.0021.000000T0000Z-180522T0000Z/
/EDFM2.2.ER.180519T0000Z.180520T1700Z.180521T1800Z.UU/
414 AM EDT Sun May 20 2018

The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until Monday evening.
* At 4 AM Sunday the stage was 17.6 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  4 AM Sunday was 17.6 feet.
* Forecast...The river will continue rising to near 17.9 feet by 
  early this afternoon. The river will fall below flood stage 
  mid-afternoon tomorrow.
* Impact...At 18.5 feet...The parking lot at Edwards Ferry is 
  completely covered by water. The parking lot at Seneca is partially
  flooded.
* Flood history...This crest compares to a previous crest of 17.6 feet
  on Feb 5 2016.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Potomac River
Edwards Ferry 15.0 17.6 Sun 4 AM  17.8 17.6 17.1 16.3  17.9 Sun 1 PM 
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$
179 
WGUS81 KLWX 201343
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
943 AM EDT Sun May 20 2018

...The flood warning is cancelled for the following rivers in 
Virginia...
 
  Rappahannock River at Remington affecting Culpeper and Fauquier 
  Counties
 
...The flood warning continues for the following rivers in 
Maryland...West Virginia...Virginia...
 
  Potomac River at Shepherdstown affecting Washington...Berkeley and 
  Jefferson Counties 
  Potomac River at Point of Rocks affecting Frederick and Loudoun 
  Counties 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties 
  Shenandoah River at Millville affecting Clarke...Warren and 
  Jefferson Counties 
  Opequon Creek near Martinsburg affecting Berkeley and Jefferson 
  Counties 
  Cacapon River near Great Cacapon affecting Morgan County 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC043-WVC003-037-210142-
/O.EXT.KLWX.FL.W.0018.000000T0000Z-180521T1400Z/
/SHEW2.1.ER.000000T0000Z.180520T1315Z.180521T0800Z.NO/
943 AM EDT Sun May 20 2018

...Flood Warning extended until Monday morning...
The Flood Warning continues for
  The Potomac River at Shepherdstown.
* Until Monday morning.
* At 9 AM Sunday the stage was 17.7 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 AM Sunday was 17.7 feet.
* Forecast...The river will continue to fall to below flood stage by 
  overnight tonight.
* Impact...At 19.0 feet...Water covers the pedestrian bridge adjacent
  to the Shepherdstown boat ramp. Significant portions of the C&O 
  Canal towpath are flooded.

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Potomac River
Shepherdstown 15.0 17.7 Sun 9 AM  17.6 16.9 15.5 14.0       
&&

LAT...LON 3958 7781 3950 7776 3941 7770 3939 7779
      3950 7789 3956 7791             

$$

MDC021-VAC107-210142-
/O.EXT.KLWX.FL.W.0020.000000T0000Z-180521T1400Z/
/PORM2.1.ER.000000T0000Z.180520T1800Z.180521T0800Z.NO/
943 AM EDT Sun May 20 2018

...Flood Warning extended until Monday morning...
The Flood Warning continues for
  The Potomac River at Point of Rocks.
* Until Monday morning.
* At 9 AM Sunday the stage was 17.3 feet.
* Flood stage is 16.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 AM Sunday was 17.3 feet.
* Forecast...The river will continue rising to near 17.4 feet by 
  mid-afternoon today. The river will fall below flood stage 
  overnight tonight.
* Impact...At 17.0 feet...Water enters the comfort station at the 
  Brunswick boat ramp parking area.
* Flood history...This crest compares to a previous crest of 18.2 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Potomac River
Point of Rock 16.0 17.3 Sun 9 AM  17.4 17.2 16.6 15.2  17.4 Sun 2 PM 
&&

LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
      3920 7754 3927 7760 3930 7770   

$$

MDC031-VAC107-210142-
/O.EXT.KLWX.FL.W.0021.000000T0000Z-180522T0100Z/
/EDFM2.2.ER.180519T0000Z.180520T1700Z.180521T1900Z.UU/
943 AM EDT Sun May 20 2018

...Flood Warning extended until Monday evening...
The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until Monday evening.
* At 9 AM Sunday the stage was 17.8 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 AM Sunday was 17.8 feet.
* Forecast...The river will continue rising to near 17.9 feet by 
  early this afternoon. The river will fall below flood stage 
  mid-afternoon tomorrow.
* Impact...At 18.5 feet...The parking lot at Edwards Ferry is 
  completely covered by water. The parking lot at Seneca is partially
  flooded.
* Flood history...This crest compares to a previous crest of 17.6 feet
  on Feb 5 2016.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Potomac River
Edwards Ferry 15.0 17.8 Sun 9 AM  17.9 17.8 17.4 16.6  17.9 Sun 2 PM 
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$

MDC031-VAC059-107-210142-
/O.EXT.KLWX.FL.W.0022.180521T0000Z-180521T0600Z/
/BRKM2.1.ER.180521T0000Z.180521T0000Z.180521T0000Z.NO/
943 AM EDT Sun May 20 2018

...Flood Warning extended until late tonight...
The Flood Warning continues for
  The Potomac River at Little Falls.
* From early this evening until late tonight.
* At 9 AM Sunday the stage was 9.7 feet.
* Flood stage is 10.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by early this evening and crest 
  near 10.0 feet by early this evening. The river will fall below 
  flood stage by early this evening.
* Impact...At 10.0 feet...Water begins to overflow the banks into low
  lying areas on the Maryland side of the river near Little Falls.
* Flood history...This crest compares to a previous crest of 10.3 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Potomac River
Little Falls  10.0  9.7 Sun 9 AM   9.9 10.0  9.8  9.5  10.0 Sun 8 PM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$

VAC043-187-WVC037-210100-
/O.EXT.KLWX.FL.W.0016.000000T0000Z-180521T0100Z/
/MILW2.1.ER.180519T0445Z.180519T2230Z.180520T1900Z.NO/
943 AM EDT Sun May 20 2018

...Flood Warning extended until this evening...
The Flood Warning continues for
  The Shenandoah River at Millville.
* Until this evening.
* At 9 AM Sunday the stage was 10.2 feet.
* Flood stage is 10.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 AM Sunday was 10.2 feet.
* Forecast...The river will continue to fall to below flood stage by 
  mid-afternoon today.
* Impact...At 10.0 feet...Parts of Bloomery Road and John Rissler 
  Road are flooded near Bloomery, West Virginia. Once these roads 
  flood, access to homes is impaired but the homes themselves are not
  in any danger of flooding. Moulton Park and the Millville boat 
  launch are also flooded.
* Flood history...This crest compares to a previous crest of 10.6 feet
  on May 27 2017.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Shenandoah River
Millville     10.0 10.2 Sun 9 AM  10.0  9.9  9.3  8.8       
&&

LAT...LON 3897 7821 3905 7805 3935 7778 3932 7772
      3914 7785 3895 7807 3892 7816   

$$

WVC003-037-210100-
/O.EXT.KLWX.FL.W.0008.000000T0000Z-180521T0100Z/
/MBGW2.2.ER.180517T0727Z.180518T0415Z.180520T1900Z.NO/
943 AM EDT Sun May 20 2018

...Flood Warning extended until this evening...
The Flood Warning continues for
  The Opequon Creek near Martinsburg.
* Until this evening.
* At 9 AM Sunday the stage was 11.2 feet.
* Flood stage is 10.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 AM Sunday was 12.2 feet.
* Forecast...The river will continue to fall to below flood stage by 
  mid-afternoon today.
* Impact...At 11.0 feet...Water begins to cover backyards of homes on
  Bowers Road (County Road 1/1). Douglas Grove Road (County Road 
  9/16) is flooded and impassible. Water also approaches Golf Course 
  Road (County Road 36) and Grapevine Road (County Road 9/14).
* Flood history...This crest compares to a previous crest of 10.7 feet
  on Jan 24 2017.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Opequon Creek
Martinsburg   10.0 11.2 Sun 9 AM  10.0  8.7  7.4  6.3       
&&

LAT...LON 3929 7807 3932 7804 3943 7799 3955 7792
      3951 7786 3938 7792 3924 7800   

$$

WVC065-210142-
/O.EXT.KLWX.FL.W.0010.000000T0000Z-180521T0300Z/
/GCPW2.1.ER.180517T2059Z.180518T1045Z.180520T2100Z.NO/
943 AM EDT Sun May 20 2018

...Flood Warning extended until this evening...
The Flood Warning continues for
  The Cacapon River near Great Cacapon.
* Until this evening.
* At 8 AM Sunday the stage was 10.5 feet.
* Flood stage is 9.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  8 AM Sunday was 11.6 feet.
* Forecast...The river will continue to fall to below flood stage by 
  late this afternoon.
* Impact...At 11.0 feet...Kilgore Road begins to flood.
* Flood history...This crest compares to a previous crest of 10.3 feet
  on May 6 2017.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Cacapon River
Great Cacapon 9.0 10.5 Sun 8 AM   9.5  8.5  7.4  6.5       
&&

LAT...LON 3949 7842 3952 7840 3956 7836 3962 7832
      3960 7825 3953 7830 3946 7834   

$$

VAC047-061-201413-
/O.CAN.KLWX.FL.W.0014.000000T0000Z-180520T1500Z/
/RENV2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
943 AM EDT Sun May 20 2018

The Flood Warning is cancelled for
  The Rappahannock River at Remington.
* At 9 AM Sunday the stage was 7.4 feet.
* Flood stage is 15.0 feet.
* No flooding is currently forecast.


&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Rappahannock River
Remington     15.0  7.4 Sun 9 AM  10.3  9.0  8.4  7.8       
&&

LAT...LON 3873 7789 3846 7772 3842 7762 3837 7762
      3840 7777 3857 7790 3868 7795   

$$
412 
WGUS81 KLWX 202305
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
705 PM EDT Sun May 20 2018

...The flood warning continues for the following rivers in 
Maryland...West Virginia...Virginia...
  Potomac River at Shepherdstown affecting Washington...Berkeley and
  Jefferson Counties 
  Potomac River at Point of Rocks affecting Frederick and Loudoun 
  Counties 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
  Potomac River at Little Falls affecting Montgomery...Fairfax and 
  Loudoun Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC043-WVC003-037-211105-
/O.CON.KLWX.FL.W.0018.000000T0000Z-180521T1400Z/
/SHEW2.1.ER.000000T0000Z.180520T1315Z.180521T0800Z.NO/
705 PM EDT Sun May 20 2018

The Flood Warning continues for
  The Potomac River at Shepherdstown.
* Until Monday morning.
* At 6 PM Sunday the stage was 16.8 feet and falling.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  6 PM Sunday was 17.4 feet.
* Impact...At 16.0 feet...Water goes over the banks of the Potomac 
  near the mouth of the Opequon River.

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Potomac River
Shepherdstown 15.0 16.8 Sun 6 PM       16.8 15.5 14.1       
&&

LAT...LON 3958 7781 3950 7776 3941 7770 3939 7779
      3950 7789 3956 7791             

$$

MDC021-VAC107-211105-
/O.CON.KLWX.FL.W.0020.000000T0000Z-180521T1400Z/
/PORM2.1.ER.000000T0000Z.180520T1915Z.180521T0800Z.NO/
705 PM EDT Sun May 20 2018

The Flood Warning continues for
  The Potomac River at Point of Rocks.
* Until Monday morning.
* At 7 PM Sunday the stage was 17.1 feet and falling.
* Flood stage is 16.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  7 PM Sunday was 17.4 feet.
* Impact...At 17.0 feet...Water enters the comfort station at the 
  Brunswick boat ramp parking area.
* Flood history...This crest compares to a previous crest of 18.2 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Potomac River
Point of Rock 16.0 17.1 Sun 7 PM       17.2 16.6 15.3       
&&

LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
      3920 7754 3927 7760 3930 7770   

$$

MDC031-VAC107-211105-
/O.CON.KLWX.FL.W.0021.000000T0000Z-180522T0100Z/
/EDFM2.2.ER.180519T0000Z.180520T1915Z.180521T1900Z.UU/
705 PM EDT Sun May 20 2018

The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until Monday evening.
* At 7 PM Sunday the stage was 17.6 feet and falling.
* Flood stage is 15.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  7 PM Sunday was 17.8 feet.
* Impact...At 17.0 feet...Floodwaters begin to enter the store at 
  Whites Ferry.
* Flood history...This crest compares to a previous crest of 17.6 feet
  on Feb 5 2016.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Potomac River
Edwards Ferry 15.0 17.6 Sun 7 PM       17.7 17.2 16.4       
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$

MDC031-VAC059-107-210600-
/O.CON.KLWX.FL.W.0022.180521T0000Z-180521T0600Z/
/BRKM2.1.ER.180521T0000Z.180521T0000Z.180521T0000Z.NO/
705 PM EDT Sun May 20 2018

The Flood Warning continues for
  The Potomac River at Little Falls.
* Until late tonight.
* At 7 PM Sunday the stage was 9.8 feet.
* Flood stage is 10.0 feet.
* Minor flooding is forecast.
* Forecast...The river will crest near 10.0 feet this evening.
* Impact...At 10.0 feet...Water begins to overflow the banks into low
  lying areas on the Maryland side of the river near Little Falls.
* Flood history...This crest compares to a previous crest of 10.3 feet
  on Oct 31 2012.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Sun  Sun  Mon  Mon   Stg Day Time

Potomac River
Little Falls  10.0  9.8 Sun 7 PM       10.0  9.8  9.5  10.0 Sun 8 PM 
&&

LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736   

$$
701 
WGUS81 KLWX 210200
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
1000 PM EDT Sun May 20 2018

...The flood warning continues for the following rivers in 
Maryland...West Virginia...Virginia...
 
  Potomac River at Shepherdstown affecting Washington...Berkeley and 
  Jefferson Counties 
  Potomac River at Point of Rocks affecting Frederick and Loudoun 
  Counties 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC043-WVC003-037-211300-
/O.EXT.KLWX.FL.W.0018.000000T0000Z-180521T1300Z/
/SHEW2.1.ER.000000T0000Z.180520T1315Z.180521T0700Z.NO/
1000 PM EDT Sun May 20 2018

...Flood Warning extended until Monday morning...
The Flood Warning continues for
  The Potomac River at Shepherdstown.
* Until Monday morning.
* At 9 PM Sunday the stage was 16.0 feet and falling.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 PM Sunday was 16.9 feet.
* Forecast...The river will continue to fall to below flood stage by 
  late tonight.
* Impact...At 16.0 feet...Water goes over the banks of the Potomac 
  near the mouth of the Opequon River.

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Mon  Mon  Mon  Mon   Stg Day Time

Potomac River
Shepherdstown 15.0 16.0 Sun 9 PM  15.0 14.1 13.1 12.2       
&&

LAT...LON 3958 7781 3950 7776 3941 7770 3939 7779
      3950 7789 3956 7791             

$$

MDC021-VAC107-211300-
/O.EXT.KLWX.FL.W.0020.000000T0000Z-180521T1300Z/
/PORM2.1.ER.000000T0000Z.180520T1915Z.180521T0700Z.NO/
1000 PM EDT Sun May 20 2018

...Flood Warning extended until Monday morning...
The Flood Warning continues for
  The Potomac River at Point of Rocks.
* Until Monday morning.
* At 9 PM Sunday the stage was 16.9 feet and falling.
* Flood stage is 16.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 PM Sunday was 17.2 feet.
* Forecast...The river will continue to fall to below flood stage by 
  late tonight.
* Impact...At 17.0 feet...Water enters the comfort station at the 
  Brunswick boat ramp parking area.

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Mon  Mon  Mon  Mon   Stg Day Time

Potomac River
Point of Rock 16.0 16.9 Sun 9 PM  16.0 15.1 13.8 12.8       
&&

LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
      3920 7754 3927 7760 3930 7770   

$$

MDC031-VAC107-211359-
/O.EXT.KLWX.FL.W.0021.000000T0000Z-180522T0105Z/
/EDFM2.2.ER.180519T0000Z.180520T1915Z.180521T1905Z.UU/
1000 PM EDT Sun May 20 2018

...Flood Warning extended until Monday evening...
The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until Monday evening.
* At 9 PM Sunday the stage was 17.5 feet and falling.
* Flood stage is 15.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  9 PM Sunday was 17.6 feet.
* Forecast...The river will continue to fall to below flood stage by 
  mid-afternoon tomorrow.
* Impact...At 17.0 feet...Floodwaters begin to enter the store at 
  Whites Ferry.
* Flood history...This crest compares to a previous crest of 17.6 feet
  on Feb 5 2016.  

&&

River        Flood    Observed     2AM  8AM  2PM  8PM        Crest
Location     Stage  Stg Day Time   Mon  Mon  Mon  Mon   Stg Day Time

Potomac River
Edwards Ferry 15.0 17.5 Sun 9 PM  17.0 16.2 15.2 14.1       
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$
575 
WGUS81 KLWX 210835
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
435 AM EDT Mon May 21 2018

...The flood warning continues for the following rivers in 
Maryland...Virginia...
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC031-VAC107-212034-
/O.CON.KLWX.FL.W.0021.000000T0000Z-180522T0105Z/
/EDFM2.2.ER.180519T0000Z.180520T1915Z.180521T1905Z.UU/
435 AM EDT Mon May 21 2018

The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until this evening.
* At 4 AM Monday the stage was 16.8 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  4 AM Monday was 17.2 feet.
* Forecast...The river will continue to fall to below flood stage by 
  mid-afternoon today.
* Impact...At 17.0 feet...Floodwaters begin to enter the store at 
  Whites Ferry.
* Flood history...This crest compares to a previous crest of 16.0 feet
  on May 10 2013.  

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Mon  Mon  Tue  Tue   Stg Day Time

Potomac River
Edwards Ferry 15.0 16.8 Mon 4 AM  15.2 14.1 13.3 12.7       
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$
107 
WGUS81 KLWX 211734
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
134 PM EDT Mon May 21 2018

...The flood warning continues for the following rivers in 
Maryland...Virginia...
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never attempt to drive through a flooded roadway...this is how most 
flood deaths result.  

Stay tuned to developments by listening to NOAA Weather radio...
television or radio stations...or visit our website at weather.gov. 
You can also find us on Facebook by searching U.S. National Weather 
Service Baltimore Washington.

&&

MDC031-VAC107-220105-
/O.CON.KLWX.FL.W.0021.000000T0000Z-180522T0105Z/
/EDFM2.2.ER.180519T0000Z.180520T1915Z.180521T1845Z.UU/
134 PM EDT Mon May 21 2018

The Flood Warning continues for
  The Potomac River at Edwards Ferry.
* Until this evening.
* At 1 PM Monday the stage was 15.4 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Recent activity...The maximum river stage in the 24 hours ending at
  1 PM Monday was 15.9 feet.
* Forecast...The river will continue to fall to below flood stage by 
  late afternoon today.
* Impact...At 15.0 feet...Water is near the boat ramp and lower 
  parking area at Edwards Ferry, and areas near White's Ferry remain inundated.

&&


River        Flood    Observed     2PM  8PM  2AM  8AM        Crest
Location     Stage  Stg Day Time   Mon  Mon  Tue  Tue   Stg Day Time

Potomac River
Edwards Ferry 15.0 15.4 Mon 1 PM  15.1 14.0 13.3 12.8       
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$
153 
WGUS81 KLWX 212134
FLSLWX
Flood Statement 
National Weather Service Baltimore MD/Washington DC 
534 PM EDT Mon May 21 2018

...The flood warning is cancelled for the following rivers in 
Maryland...Virginia...
 
  Potomac River at Edwards Ferry affecting Montgomery and Loudoun 
  Counties. The river has fallen below flood stage.

&&

MDC031-VAC107-212204-
/O.CAN.KLWX.FL.W.0021.000000T0000Z-180522T0500Z/
/EDFM2.2.ER.180519T0000Z.180520T1915Z.180521T2300Z.UU/
534 PM EDT Mon May 21 2018

The Flood Warning is cancelled for
  The Potomac River at Edwards Ferry.
* At 5 PM Monday the stage was 14.8 feet and falling.
* Flood stage is 15.0 feet.

&&


River        Flood    Observed     8PM  2AM  8AM  2PM        Crest
Location     Stage  Stg Day Time   Mon  Tue  Tue  Tue   Stg Day Time

Potomac River
Edwards Ferry 15.0 14.8 Mon 5 PM  14.0 13.3 12.8 12.4       
&&

LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754   

$$

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before this river flood warning went out at May 17, 3:07 PM EDT, 37 minutes earlier.

Area forecast discussion, May 17, 3:07 PM EDT, 37 minutes before
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
307 PM EDT Thu May 17 2018

.SYNOPSIS...
A front will remain nearly stationary across the region through
Saturday. Ample moisture, from a non-tropical low pressure system
over the northeast Gulf of Mexico and Bermuda high pressure off of
the Southeast U.S. Coast, will bring the potential for heavy rain
and flooding through Saturday morning. A cold front will advance
from the northwest late Sunday, before becoming stationary over
the mid-Atlantic at the beginning of next week.

&&

.NEAR TERM /THROUGH TONIGHT/...
Regional radar at 1830Z shows stratiform-like rainfall
continuing north of the boundary, which has been persistent in
bisecting the CWA, with convection south of this boundary. SPC
mesoanalysis has a tight gradient of SBCAPE with about 1000
J/kg extending along a line from Pt Lookout to KCHO. Lightning
networks shows activity on the stable side of this gradient, and
the 17Z HRRR layer comp reflectivity has this activity
continuing through 8 PM. Effective bulk shear is around 30KTS
over the mid-bay, with lesser shear over the land. Therefore,
not expecting any severe thunderstorms, but a stronger
thunderstorm may get going around the waters of Pt. Lookout
later this afternoon and evening. Late this afternoon and
before midnight tonight, the axis of heaviest rainfall will be
across the southern portion of the CWA in association with the
ongoing convection, which will produce 1-3 inches of rainfall
locally, especially the east slopes of the Blue Ridge and
Allegheny Mountains.

The 12Z GFS has strong omega throughout the vertical overnight,
associated with wind convergence throughout the vertical, and
warm air advection at the low levels as winds turn easterly
bringing in Atlantic moisture. The northern portion of the CWA
will see a brief respite from moderate or heavy rain until
midnight, then the areas of convection from later this evening
will move into the northern half of the CWA overnight, and be
heavy at times.

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
Deep moisture is still present from the surface to the
tropopause through Saturday morning, creating not much of a
change, except that the 12Z GFS showing slow tapering beginning
on Saturday into Saturday night.

During this time we will see an increase in both the local area
streams and mainstem rivers.

&&

.LONG TERM /SUNDAY THROUGH THURSDAY/...
Lingering showers will continue on Sunday, as cold front drops
through the area from the northwest. High temperatures will be
in the low 80's.

The dry pattern will not last too long, as a low pressure system
moving across the northeast will drag a cold front across the region
late Sunday into early Monday. This front will move through the
region by the end of Monday, but another low pressure system will
pass by closer to the region. The exact location is a it uncertain
at this point. However, it seems pretty clear that we will have
another cold front pass by in this general time frame, bringing
about another chance for rain. Based off of the latest model
guidance, these amounts do not look significant, and are generally
around a quarter inch of total precipitation. However, there will be
a chance for thunderstorms both Monday and Tuesday, so heavier
amounts may fall anywhere a thunderstorm sets up. Temperatures again
will remain in the low 80's throughout this timeframe.

The details of Wednesday's forecast are murky at this stage, as the
aforementioned cold front looks to stall somewhere along or south of
the area. Where this front stalls will determine if we things dry
out a little. Right now, maintaining a chance of showers and
isolated afternoon thunderstorms through Wednesday.

&&

.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
All terminals will continue to see IFR conditions primarily due
to low CIGS through this evening, then becoming LIFR overnight.
KMRB and KCHO may briefly improve at times to MVFR through this
evening, but return to IFR overnight.  These conditions are
expected to continue through at least mid-morning on Friday.

Clearing skies Sunday afternoon, with another
approaching cold front late Sunday into Monday. Low ceilings
will be possible during this period. A chance for some scattered
thunderstorms on Monday as well.

&&

.MARINE...
Increasing easterly flow on Friday will bring small craft
conditions on Friday, predominantly in the northern portion of
the Chesapeake Bay, but extending to all waters during midday
Friday. Areas of fog will continue giving visibilities at or
below one mile at times, particularly overnight tonight.

Winds approaching SCA criteria will be possible on
Sunday afternoon as a cold front is exiting the region. Calmer
winds expected Monday, but the potential exists for some
thunderstorms.

&&

.HYDROLOGY...
Conditions continue to worsen as this slow-evolving hydro event
continues. A pretty widespread three inches or more of rain has
fallen across the northern half of the forecast area already, with
amounts that high more spotty to the south. (Parts of Culpeper and
Fauquier Counties haven't even seen an inch so far.)

The evolution is so far going along similar to model projections,
with light to moderate rain across the north, and more showery and
heavy rain developing this afternoon to the south. This activity
will pivot northward, and it appears will be followed by multiple
additional rounds of precipitation.

Confidence has increased in the rainfall prolonging into Friday
night, and accordingly the Flood Watch was extended through that
time. Also, the area has been expanded to include more counties. We
still expect another 2 to 5 inches of rain between now and Saturday.

Streams (including the mainstem Potomac) are already elevated or in
flood, so flood potential is high. Forecasts now call for moderate
flooding on the mainstem rivers downstream of Shepherdstown and
minor flooding at several tributary locations. River Flood Warnings
will be in effect for these locations based on a high confidence of
at least minor flooding. It should be noted that depending on where
heavy rain axes set up during the course of the event, there could
be even more significant flooding than we are forecasting and
interests near any river should heed warnings and keep themselves
and their belongings away from the rivers.

&&

.TIDES/COASTAL FLOODING...
Fairly persistent onshore/up-the-bay winds increase the threat of
minor tidal flooding for the more sensitive locations starting
Saturday morning. Additionally, freshwater inundation will pose a
threat to the DC/Alexandria tidal zone, and a Coastal Flood Watch is
in effect from Friday through Sunday, with a focus really starting
Friday afternoon/evening, for moderate flooding or greater.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...Flood Watch through Saturday morning for DCZ001.
     Coastal Flood Watch from Friday morning through Sunday morning
     for DCZ001.
MD...Flood Watch through Saturday morning for MDZ003>006-011-013-
     014-016>018-501>508.
VA...Flood Watch through Saturday morning for VAZ025>031-036>040-
     050>057-501>508.
     Coastal Flood Watch from Friday morning through Sunday morning
     for VAZ054.
WV...Flood Watch through Saturday morning for WVZ050>053-055-
     501>506.
MARINE...Small Craft Advisory from 6 AM Friday to 3 AM EDT Saturday for
     ANZ530>533-538>541.
     Small Craft Advisory from 2 PM to 8 PM EDT Friday for
     ANZ534>537-542-543.

&&

SYNOPSIS...Lee
NEAR TERM...Lee
SHORT TERM...Lee
LONG TERM...CJL
AVIATION...Lee/CJL
MARINE...Lee/CJL
HYDROLOGY...
TIDES/COASTAL FLOODING...
Hazardous weather outlook, May 17, 11:54 AM EDT, 3 hours 50 minutes before
Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
1154 AM EDT Thu May 17 2018

ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-181600-
Chesapeake Bay north of Pooles Island MD-
Chesapeake Bay from Pooles Island to Sandy Point MD-
Chesapeake Bay from Sandy Point to North Beach MD-
Chesapeake Bay from North Beach to Drum Point MD-
Chesapeake Bay from Drum Point MD to Smith Point VA-
Tidal Potomac from Key Bridge to Indian Head MD-
Tidal Potomac from Indian Head to Cobb Island MD-
Tidal Potomac from Cobb Island MD to Smith Point VA-
Patapsco River including Baltimore Harbor-
Chester River to Queenstown MD-Eastern Bay-
Choptank River to Cambridge MD and the Little Choptank River-
Patuxent River to Broomes Island MD-
Tangier Sound and the inland waters surrounding Bloodsworth
Island-District of Columbia-Southern Baltimore-Prince Georges-
Anne Arundel-Charles-St. Marys-Calvert-Southeast Harford-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-
1154 AM EDT Thu May 17 2018

This Hazardous Weather Outlook is for the Maryland portion of the
Chesapeake Bay, Tidal Potomac River, and adjacent counties in
central Maryland and northern Virginia as well as the District of
Columbia.

.DAY ONE...This Afternoon and Tonight

A Flood Watch is in effect this afternoon through Friday evening
for the potential of flooding from heavy rain.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The Flood Watch continues Friday into Friday evening for the
potential of flooding from heavy rain.

A Coastal Flood Watch is in effect for the tidal Potomac River in
Washington DC and Alexandria VA from Friday morning through Sunday
morning.

.SPOTTER INFORMATION STATEMENT...

Please relay any flood reports to the National Weather Service.

MDZ003>006-501>507-VAZ025>031-036>040-050-051-501>508-WVZ050>053-
055-501>506-181600-
Washington-Frederick MD-Carroll-Northern Baltimore-
Extreme Western Allegany-Central and Eastern Allegany-
Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Augusta-Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke-
Nelson-Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper-
Northern Fauquier-Southern Fauquier-Western Highland-
Eastern Highland-Western Loudoun-Eastern Loudoun-
Northern Virginia Blue Ridge-Central Virginia Blue Ridge-
Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant-
Eastern Grant-Western Mineral-Eastern Mineral-Western Pendleton-
Eastern Pendleton-
1154 AM EDT Thu May 17 2018

This Hazardous Weather Outlook is for eastern West Virginia,
northern and central Virginia, and central and western Maryland
with the exception of Garrett County.

.DAY ONE...This Afternoon and Tonight

A Flood Watch is in effect for this afternoon and tonight for
portions of north-central Maryland, extreme eastern West
Virginia, the central and northern portions of the Shenandoah
Valley, and portions of the northern piedmont of Virginia.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The Flood Watch remains in effect Friday through Friday evening for
portions of north-central Maryland, extreme eastern West
Virginia, the central and northern portions of the Shenandoah
Valley, and portions of the northern piedmont of Virginia.

.SPOTTER INFORMATION STATEMENT...

Please relay any flood reports to the National Weather Service.

In the hours before

Local storm report, May 17, 12:54 PM EDT, 2 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1254 PM EDT THU MAY 17 2018

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

0455 PM     TSTM WND DMG     LURAY                   38.66N  78.46W
05/14/2018                   PAGE               VA   TRAINED SPOTTER

            SEVERAL TREES DOWN IN LURAY. SOME SIDING RIPPED FROM A
            HOME.

&&

EVENT NUMBER LWX1800339

STRONG
Local storm report, May 17, 12:57 PM EDT, 2 hours 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1257 PM EDT THU MAY 17 2018

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

0745 AM     FLOOD            2 NE ROUND HILL         39.15N  77.75W
05/17/2018                   LOUDOUN            VA   NWS EMPLOYEE

            SOUTH FORK CATOCTIN CREEK FLOODED OVER KETOCTIN CHURCH
            RD.

&&

EVENT NUMBER LWX1800340

STRONG

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 16, 8:40 PM EDTAreal Flood WarningLWXClarke, Frederick, Warren, City of Winchester12 hr
May 16, 11:58 PM EDTAreal Flood WarningLWXClarke, Loudoun14 hr
May 17, 7:13 AM EDTAreal Flood WarningLWXLoudoun8 hr
May 17, 7:36 AM EDTCoastal Flood AdvisoryLWXArlington, City of Alexandria, City of Falls Church4 hr
May 17, 8:16 AM EDTAreal Flood WarningLWXClarke, Frederick10 hr
May 17, 10:34 AM EDTCoastal Flood WatchLWXArlington, City of Alexandria, City of Falls Church42 hr
May 17, 1:34 PM EDTSmall Craft AdvisoryLWX44 hr
May 17, 3:28 PM EDTRiver Flood WarningLWXLoudoun18 hr
May 17, 3:29 PM EDTRiver Flood WarningLWXCulpeper, Fauquier3 days
May 17, 3:32 PM EDTRiver Flood WarningLWXStafford, City of Fredericksburg18 hr
May 17, 3:33 PM EDTRiver Flood WarningLWXClarke, Warren3 days
May 17, 3:43 PM EDTRiver Flood WarningLWXLoudoun4 days
May 17, 3:44 PM EDTRiver Flood WarningLWXFairfax, Loudoun3 days
May 17, 3:49 PM EDTAreal Flood WarningLWXNelson6 hr
May 17, 3:50 PM EDTCoastal Flood AdvisoryLWXArlington, King George, City of Alexandria, City of Falls Church3 days
May 17, 6:57 AM EDTRiver Flood WarningLWXFrederick27 hr
May 17, 3:27 PM EDTRiver Flood WarningLWXMontgomery18 hr
May 17, 3:40 PM EDTRiver Flood WarningLWXAllegany31 hr
May 17, 3:42 PM EDTRiver Flood WarningLWXWashington4 days
May 17, 3:43 PM EDTRiver Flood WarningLWXWashington36 hr

Nearby

River Flood Warnings in Virginia, 2018River Flood Warnings in Maryland, 2018Every river flood warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.