Alert archive / Virginia / River Flood Warnings in 2021

River Flood Warning 9, NWS Baltimore/Washington

March 1, 2021Loudoun County, Virginia; Montgomery County, Maryland

NWS Baltimore/Washington issued this river flood warning at Mar 1, 2021, 10:15 AM EST for Loudoun County, Virginia; Montgomery County, Maryland. It took effect at Mar 2, 2021, 2:25 AM EST. It was in force for 35 hr.

The area

The outline as issued.

The facts

Issued
Mar 1, 2021, 10:15 AM EST (15:15 UTC)
In effect from
Mar 2, 2021, 2:25 AM EST
Expired
Mar 3, 2021, 1:51 PM EST
In force
35 hr
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon
Flood severity
Minor

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 15:16 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).

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.

752 
WGUS41 KLWX 011515
FLWLWX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Baltimore MD/Washington DC
1015 AM EST Mon Mar 1 2021

...The National Weather Service in Baltimore MD/Washington DC has 
issued a Flood Warning for the following rivers in Maryland...
Virginia...

  Potomac River at Edwards Ferry affecting Loudoun and Montgomery 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

Stay tuned to further developments by listening to your local radio, 
television, or NOAA Weather Radio for further information.

Additional information is available at www.weather.gov/washington or 
www.weather.gov/baltimore.


MDC031-VAC107-020315-
/O.NEW.KLWX.FL.W.0009.210302T1400Z-210303T1600Z/
/EDFM2.1.ER.210302T1400Z.210303T0000Z.210303T1000Z.UU/
1015 AM EST Mon Mar 1 2021

The National Weather Service in Sterling Virginia has issued a

* Flood Warning for
  the Potomac River at Edwards Ferry.
* From Tuesday morning to Wednesday morning.
* At 9:45 AM EST Monday the stage was 11.6 feet, or 3.4 feet below 
  flood stage.
* Flood stage is 15.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tomorrow morning to a crest of 16.2 feet tomorrow evening. It will 
  then fall below flood stage early Wednesday morning.
* Impact...At 15.0 feet, Water reaches the boat ramp and lower 
  parking area at Edwards Ferry, and begins to inundate areas near 
  Whites Ferry.
* Impact...At 17.0 feet, Floodwaters begin to enter the store at 
  Whites Ferry.
* Flood History...No available flood history.

&&

River Name     Fld      Observed    Mon   Mon   Tue     Crest       
Location       Stg   Stg  Day/Time  3PM   9PM   3AM   Stg Time Date 

Potomac River
Edwards Ferry  15.0  11.6 Mon 9 am  MSG   MSG   MSG   16.2 7pm Tue  


&&

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

$$

JMG
7 follow-up statements
069 
WGUS81 KLWX 020146
FLSLWX

Flood Statement
National Weather Service Baltimore MD/Washington DC
846 PM EST Mon Mar 1 2021

...The Flood Warning is extended for the following rivers in 
Maryland...Virginia...

  Potomac River at Edwards Ferry affecting Loudoun and Montgomery 
  Counties.

...The Flood Warning continues for the following rivers in West 
Virginia...Maryland...Virginia...

  South Branch Potomac River near Springfield affecting Hardy and 
  Hampshire Counties.

  Potomac River at Shepherdstown affecting Jefferson, Washington 
  and Berkeley Counties.

  Potomac River at Point of Rocks affecting Loudoun and Frederick 
  Counties.

  Cacapon River near Great Cacapon affecting Morgan County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Stay tuned to further developments by listening to your local radio, 
television, or NOAA Weather Radio for further information.

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

Additional information is available at www.weather.gov/washington or 
www.weather.gov/baltimore.


MDC043-WVC003-037-021400-
/O.EXT.KLWX.FL.W.0006.000000T0000Z-210303T1000Z/
/SHEW2.1.ER.000000T0000Z.210302T0500Z.210303T0400Z.NO/
846 PM EST Mon Mar 1 2021

...The Flood Warning is now in effect until early Wednesday 
morning...

The Flood Warning continues for
  the Potomac River at Shepherdstown.
* Until late Tuesday night.
* At 7:30 PM EST Monday the stage was 16.2 feet, or 1.1 feet above 
  flood stage.
* 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 7:30 PM EST Monday was 16.2 feet.
* Forecast...The river is expected to rise to a crest of 17.8 feet 
  just after midnight tonight. It will then fall below flood stage 
  late tomorrow evening.
* Flood History...This crest compares to a previous crest of 17.8 
  feet on 03/12/1952.

&&

River Name     Fld      Observed    Tue   Tue   Tue     Crest       
Location       Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

Potomac River
Shepherdstown  15.0  16.2 Mon 7 pm  17.8  17.6  16.7  17.8 12am Tue 


&&

LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
      3952 7786 3954 7784 3953 7780 3950 7775
      3945 7775 3942 7771

$$

WVC027-031-020715-
/O.EXT.KLWX.FL.W.0003.000000T0000Z-210302T0704Z/
/SPRW2.1.ER.210301T1112Z.210301T2145Z.210302T0104Z.NO/
846 PM EST Mon Mar 1 2021

...The Flood Warning is now in effect until just after midnight 
tonight...

The Flood Warning continues for
  the South Branch Potomac River near Springfield.
* Until late tonight.
* At 7:30 PM EST Monday the stage was 15.1 feet, or 0.1 feet above 
  flood stage.
* Flood stage is 15.0 feet.
* Minor flooding is occurring.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 7:30 PM EST Monday was 15.2 feet.
* Forecast...The river is expected to fall to 5.6 feet Thursday 
  evening.
* Impact...At 15.0 feet, Milleson Mill Road (County Route 28/5) and 
  Clarence Taylor Road (Route 3/7) begin to flood. Water covers a 
  significant portion of meadowlands near the river. The boat launch 
  ramp on the upstream right abutment of the bridge also floods.
* Flood History...This crest compares to a previous crest of 15.1 
  feet on 02/24/2003.

&&

River Name   Fld      Observed    Tue   Tue   Tue     Crest       
Location     Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

South Branch Potomac River
Springfield  15.0  15.1 Mon 7 pm  14.4  12.9  11.3  15.3 1pm Mon 


&&

LAT...LON 3907 7900 3915 7897 3942 7877 3953 7863
      3951 7854 3936 7870 3905 7894

$$

WVC065-021400-
/O.EXT.KLWX.FL.W.0002.000000T0000Z-210302T1400Z/
/GCPW2.1.ER.210301T0916Z.210301T1615Z.210302T0800Z.NO/
846 PM EST Mon Mar 1 2021

...The Flood Warning is now in effect until late tomorrow morning...

The Flood Warning continues for
  the Cacapon River near Great Cacapon.
* Until Tuesday morning.
* At 7:30 PM EST Monday the stage was 9.7 feet, or 0.7 feet above 
  flood stage.
* 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 7:30 PM EST Monday was 10.6 feet.
* Forecast...The river is expected to fall below flood stage late 
  tonight and continue falling to 3.6 feet Thursday evening.
* Impact...At 9.0 feet, Rock Ford Road begins to flood in multiple 
  locations, including flowing completely over the low water bridge. 
  Constant Run Road and a small portion of Kilgore Road also begin 
  to flood.
* Flood History...This crest compares to a previous crest of 9.7 
  feet on 02/02/1951.

&&

River Name     Fld      Observed    Tue   Tue   Tue     Crest       
Location       Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

Cacapon River
Great Cacapon  9.0   9.7  Mon 7 pm  9.2   8.3   7.2   10.6 12pm Mon 


&&

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

$$

MDC031-VAC107-021400-
/O.EXT.KLWX.FL.W.0009.210302T0742Z-210303T1900Z/
/EDFM2.1.ER.210302T0742Z.210302T2300Z.210303T1300Z.UU/
846 PM EST Mon Mar 1 2021

...The Flood Warning is now in effect until early Wednesday 
afternoon...

The Flood Warning continues for
  the Potomac River at Edwards Ferry.
* From late tonight to Wednesday afternoon.
* At 7:45 PM EST Monday the stage was 14.1 feet, or 0.9 feet below 
  flood stage.
* Flood stage is 15.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just 
  after midnight tonight to a crest of 16.6 feet tomorrow evening. 
  It will then fall below flood stage Wednesday morning.
* Impact...At 17.0 feet, Floodwaters begin to enter the store at 
  Whites Ferry.
* Flood History...No available flood history.

&&

River Name     Fld      Observed    Tue   Tue   Tue     Crest       
Location       Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

Potomac River
Edwards Ferry  15.0  14.1 Mon 7 pm  14.8  15.5  16.2  16.6 6pm Tue  


&&

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

$$

MDC021-VAC107-021400-
/O.EXT.KLWX.FL.W.0007.210302T0800Z-210303T0843Z/
/PORM2.1.ER.210302T0800Z.210302T1800Z.210303T0243Z.NO/
846 PM EST Mon Mar 1 2021

...The Flood Warning is now in effect until early Wednesday 
morning...

The Flood Warning continues for
  the Potomac River at Point of Rocks.
* From late tonight to late Tuesday night.
* At 6:45 PM EST Monday the stage was 12.9 feet, or 3.1 feet below 
  flood stage.
* Flood stage is 16.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tonight to a crest of 17.3 feet early tomorrow afternoon. It will 
  then fall below flood stage late tomorrow evening.
* 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 17.3 
  feet on 01/25/1979.

&&

River Name      Fld      Observed    Tue   Tue   Tue     Crest       
Location        Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

Potomac River
Point of Rocks  16.0  12.9 Mon 6 pm  15.1  16.5  17.3  17.3 1pm Tue  


&&

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

$$

BKF
095 
WGUS81 KLWX 020725
FLSLWX

Flood Statement
National Weather Service Baltimore MD/Washington DC
225 AM EST Tue Mar 2 2021

...The Flood Warning is extended for the following rivers in 
Maryland...Virginia...

  Potomac River at Edwards Ferry affecting Loudoun and Montgomery 
  Counties.

...The Flood Warning continues for the following rivers in 
Maryland...Virginia...West Virginia...

  Potomac River at Point of Rocks affecting Loudoun and Frederick 
  Counties.

  Cacapon River near Great Cacapon affecting Morgan County.

  Potomac River at Shepherdstown affecting Jefferson, Washington 
  and Berkeley Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Stay tuned to further developments by listening to your local radio, 
television, or NOAA Weather Radio for further information.

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

Additional information is available at www.weather.gov/washington or 
www.weather.gov/baltimore.


MDC031-VAC107-021930-
/O.EXT.KLWX.FL.W.0009.210302T0725Z-210303T1900Z/
/EDFM2.1.ER.210302T0427Z.210302T2300Z.210303T1300Z.UU/
225 AM EST Tue Mar 2 2021

...The Flood Warning is now in effect until early tomorrow 
afternoon...

The Flood Warning continues for
  the Potomac River at Edwards Ferry.
* From early this morning to Wednesday afternoon.
* At 1:45 AM EST Tuesday the stage was 15.5 feet, or 0.5 feet above 
  flood stage.
* 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 1:45 AM EST Tuesday was 15.5 feet.
* Forecast...The river is expected to rise to a crest of 16.7 feet 
  this evening. It will then fall below flood stage tomorrow morning.
* Impact...At 17.0 feet, Floodwaters begin to enter the store at 
  Whites Ferry.
* Flood History...No available flood history.

&&

River Name     Fld      Observed    Tue   Tue   Tue     Crest       
Location       Stg   Stg  Day/Time  7AM   1PM   7PM   Stg Time Date 

Potomac River
Edwards Ferry  15.0  15.5 Tue 1 am  15.8  16.4  16.7  16.7 6pm Tue  


&&

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

$$

MDC021-VAC107-021930-
/O.EXT.KLWX.FL.W.0007.210302T0725Z-210303T0651Z/
/PORM2.1.ER.210302T0720Z.210302T0800Z.210303T0051Z.NO/
225 AM EST Tue Mar 2 2021

...The Flood Warning is now in effect until just after midnight 
tonight...

The Flood Warning continues for
  the Potomac River at Point of Rocks.
* From early this morning to late tonight.
* At 1:45 AM EST Tuesday the stage was 15.1 feet, or 0.9 feet below 
  flood stage.
* Flood stage is 16.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage early this 
  morning to 17.0 feet early this morning. It will then fall below 
  flood stage this morning to 15.7 feet and begin rising again this 
  morning. It will rise above flood stage again late this morning 
  and continue to rise to 16.6 feet this afternoon. It will then 
  fall below flood stage again this evening.
* 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 17.0 
  feet on 05/20/1988.

&&

River Name      Fld      Observed    Tue   Tue   Tue     Crest       
Location        Stg   Stg  Day/Time  7AM   1PM   7PM   Stg Time Date 

Potomac River
Point of Rocks  16.0  15.1 Tue 1 am  15.7  16.6  16.1  17.0 3am Tue  


&&

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

$$

WVC065-021315-
/O.EXT.KLWX.FL.W.0002.000000T0000Z-210302T1315Z/
/GCPW2.1.ER.210301T0916Z.210301T1615Z.210302T0715Z.NO/
225 AM EST Tue Mar 2 2021

...The Flood Warning is now in effect until this morning...

The Flood Warning continues for
  the Cacapon River near Great Cacapon.
* Until this morning.
* At 1:30 AM EST Tuesday the stage was 9.1 feet, or 0.1 feet above 
  flood stage.
* Flood stage is 9.0 feet.
* Minor flooding is occurring.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 1:30 AM EST Tuesday was 10.6 feet.
* Forecast...The river is expected to fall to 3.5 feet early Friday 
  morning.
* Impact...At 9.0 feet, Rock Ford Road begins to flood in multiple 
  locations, including flowing completely over the low water bridge. 
  Constant Run Road and a small portion of Kilgore Road also begin 
  to flood.
* Flood History...This crest compares to a previous crest of 9.1 
  feet on 03/12/1952.

&&

River Name     Fld      Observed    Tue   Tue   Tue     Crest       
Location       Stg   Stg  Day/Time  7AM   1PM   7PM   Stg Time Date 

Cacapon River
Great Cacapon  9.0   9.1  Tue 1 am  8.5   7.7   6.7    MSG  unknown 


&&

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

$$

MDC043-WVC003-037-021930-
/O.CON.KLWX.FL.W.0006.000000T0000Z-210303T1000Z/
/SHEW2.1.ER.000000T0000Z.210302T1200Z.210303T0400Z.NO/
225 AM EST Tue Mar 2 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Potomac River at Shepherdstown.
* Until late tonight.
* At 1:30 AM EST Tuesday the stage was 17.4 feet, or 2.4 feet above 
  flood stage.
* 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 1:30 AM EST Tuesday was 17.4 feet.
* Forecast...The river is expected to rise to a crest of 17.5 feet 
  this morning. It will then fall below flood stage late this 
  evening.
* Impact...At 16.0 feet, Water goes over the banks of the Potomac 
  near the mouth of the Opequon River.
* Flood History...This crest compares to a previous crest of 17.6 
  feet on 05/07/1988.

&&

River Name     Fld      Observed    Tue   Tue   Tue     Crest       
Location       Stg   Stg  Day/Time  7AM   1PM   7PM   Stg Time Date 

Potomac River
Shepherdstown  15.0  17.4 Tue 1 am  17.5  16.8  15.9  17.5 7am Tue  


&&

LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
      3952 7786 3954 7784 3953 7780 3950 7775
      3945 7775 3942 7771

$$

BJL
012 
WGUS41 KLWX 021431
FLWLWX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Baltimore MD/Washington DC
931 AM EST Tue Mar 2 2021

...Forecast flooding changed from Minor to Moderate severity and 
increased in duration for the following rivers in Maryland...
Virginia...

  Potomac River at Edwards Ferry affecting Loudoun and Montgomery 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional information is available at www.weather.gov/washington or 
www.weather.gov/baltimore.


MDC031-VAC107-030245-
/O.EXT.KLWX.FL.W.0009.000000T0000Z-210303T2300Z/
/EDFM2.2.ER.210302T0427Z.210303T0000Z.210303T1700Z.UU/
931 AM EST Tue Mar 2 2021

...Forecast flooding increased from Minor to Moderate severity and 
increased in duration until tomorrow evening...

The Flood Warning continues for
  the Potomac River at Edwards Ferry.
* Until Wednesday evening.
* At 6:45 AM EST Tuesday the stage was 16.3 feet, or 1.3 feet above 
  flood stage.
* 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 6:45 AM EST Tuesday was 16.3 feet.
* Forecast...The river is expected to rise to a crest of 17.0 feet 
  this evening. It will then fall below flood stage early tomorrow 
  afternoon.
* Impact...At 15.0 feet, Water reaches the boat ramp and lower 
  parking area at Edwards Ferry, and begins to inundate areas near 
  Whites Ferry.
* Impact...At 17.0 feet, Floodwaters begin to enter the store at 
  Whites Ferry.
* Flood History...No available flood history.

&&

River Name     Fld      Observed    Tue   Tue   Wed     Crest       
Location       Stg   Stg  Day/Time  1PM   7PM   1AM   Stg Time Date 

Potomac River
Edwards Ferry  15.0  16.3 Tue 6 am  16.9  17.0  16.7  17.0 7pm Tue  


&&

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

$$

JMG
603 
WGUS81 KLWX 022121
FLSLWX

Flood Statement
National Weather Service Baltimore MD/Washington DC
421 PM EST Tue Mar 2 2021

...The Flood Warning continues for the following rivers in 
Maryland...Virginia...West Virginia...

  Potomac River at Edwards Ferry affecting Loudoun and Montgomery 
  Counties.

  Potomac River at Point of Rocks affecting Loudoun and Frederick 
  Counties.

  Potomac River at Shepherdstown affecting Jefferson, Washington 
  and Berkeley Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

Additional information is available at www.weather.gov/washington or 
www.weather.gov/baltimore.


MDC031-VAC107-030930-
/O.EXT.KLWX.FL.W.0009.000000T0000Z-210303T2000Z/
/EDFM2.2.ER.210302T0427Z.210303T0000Z.210303T1400Z.UU/
421 PM EST Tue Mar 2 2021

...The Flood Warning is now in effect until tomorrow afternoon...

The Flood Warning continues for
  the Potomac River at Edwards Ferry.
* Until Wednesday afternoon.
* At 3:45 PM EST Tuesday the stage was 16.9 feet, or 1.9 feet above 
  flood stage.
* 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 3:45 PM EST Tuesday was 16.9 feet.
* Forecast...The river is expected to rise to a crest of 17.0 feet 
  this evening. It will then fall below flood stage late tomorrow 
  morning.
* Impact...At 17.0 feet, Floodwaters begin to enter the store at 
  Whites Ferry.
* Flood History...No available flood history.

&&

River Name     Fld      Observed    Wed   Wed   Wed     Crest       
Location       Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

Potomac River
Edwards Ferry  15.0  16.9 Tue 3 pm  16.6  15.7  14.5  17.0 7pm Tue  


&&

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

$$

MDC021-VAC107-030700-
/O.CON.KLWX.FL.W.0007.000000T0000Z-210303T0700Z/
/PORM2.1.ER.210302T0720Z.210302T1800Z.210303T0100Z.NO/
421 PM EST Tue Mar 2 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Potomac River at Point of Rocks.
* Until late tonight.
* At 3:45 PM EST Tuesday the stage was 16.2 feet, or 0.2 feet above 
  flood stage.
* 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 3:45 PM EST Tuesday was 16.4 feet.
* Forecast...The river is expected to fall below flood stage this 
  evening and continue falling to 7.3 feet early Friday afternoon.
* Impact...At 16.0 feet, The parking lots at both the McKimmey and 
  Brunswick boat ramps begin to flood. Flooding of an agricultural 
  field adjacent to the McKimmey boat ramp is occurring. About half 
  the lower parking lot of the Point of Rocks boat ramp is also 
  flooded.
* Flood History...This crest compares to a previous crest of 16.2 
  feet on 09/07/1979.

&&

River Name      Fld      Observed    Wed   Wed   Wed     Crest       
Location        Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

Potomac River
Point of Rocks  16.0  16.2 Tue 3 pm  15.2  14.2  13.1  16.4 12pm Tue 


&&

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

$$

MDC043-WVC003-037-030930-
/O.CON.KLWX.FL.W.0006.000000T0000Z-210303T1000Z/
/SHEW2.1.ER.000000T0000Z.210302T1100Z.210303T0400Z.NO/
421 PM EST Tue Mar 2 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Potomac River at Shepherdstown.
* Until late tonight.
* At 3:30 PM EST Tuesday the stage was 16.5 feet, or 1.4 feet above 
  flood stage.
* 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 3:30 PM EST Tuesday was 16.8 feet.
* Forecast...The river is expected to fall below flood stage late 
  this evening and continue falling to 7.6 feet early Friday 
  afternoon.
* Impact...At 16.0 feet, Water goes over the banks of the Potomac 
  near the mouth of the Opequon River.
* Flood History...This crest compares to a previous crest of 16.5 
  feet on 03/13/1936.

&&

River Name     Fld      Observed    Wed   Wed   Wed     Crest       
Location       Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

Potomac River
Shepherdstown  15.0  16.5 Tue 3 pm  14.8  13.6  12.3  17.5 4am Tue 


&&

LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
      3952 7786 3954 7784 3953 7780 3950 7775
      3945 7775 3942 7771

$$

BKF
942 
WGUS81 KLWX 030107
FLSLWX

Flood Statement
National Weather Service Baltimore MD/Washington DC
807 PM EST Tue Mar 2 2021

...The Flood Warning is extended for the following rivers in 
Maryland...West Virginia...

  Potomac River at Shepherdstown affecting Jefferson, Washington 
  and Berkeley Counties.

...The Flood Warning continues for the following rivers in 
Maryland...Virginia...

  Potomac River at Edwards Ferry affecting Loudoun and Montgomery 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

Additional information is available at www.weather.gov/washington or 
www.weather.gov/baltimore.


MDC031-VAC107-031315-
/O.EXT.KLWX.FL.W.0009.000000T0000Z-210303T1900Z/
/EDFM2.1.ER.210302T0427Z.210302T2115Z.210303T1300Z.UU/
807 PM EST Tue Mar 2 2021

...The Flood Warning is now in effect until early tomorrow 
afternoon...

The Flood Warning continues for
  the Potomac River at Edwards Ferry.
* Until Wednesday afternoon.
* At 7:45 PM EST Tuesday the stage was 16.8 feet, or 1.8 feet above 
  flood stage.
* 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 7:45 PM EST Tuesday was 16.9 feet.
* Forecast...The river is expected to fall below flood stage 
  tomorrow morning and continue falling to 9.4 feet Friday evening.
* Impact...At 15.0 feet, Water reaches the boat ramp and lower 
  parking area at Edwards Ferry, and begins to inundate areas near 
  Whites Ferry.
* Impact...At 17.0 feet, Floodwaters begin to enter the store at 
  Whites Ferry.
* Flood History...No available flood history.

&&

River Name     Fld      Observed    Wed   Wed   Wed     Crest       
Location       Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

Potomac River
Edwards Ferry  15.0  16.8 Tue 7 pm  16.4  15.3  14.3   MSG  unknown 


&&

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

$$

MDC043-WVC003-037-031015-
/O.EXT.KLWX.FL.W.0006.000000T0000Z-210303T1004Z/
/SHEW2.1.ER.000000T0000Z.210302T1100Z.210303T0404Z.NO/
807 PM EST Tue Mar 2 2021

...The Flood Warning is now in effect until late tonight...

The Flood Warning continues for
  the Potomac River at Shepherdstown.
* Until late tonight.
* At 7:30 PM EST Tuesday the stage was 15.6 feet, or 0.6 feet above 
  flood stage.
* Flood stage is 15.0 feet.
* Minor flooding is occurring.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 7:30 PM EST Tuesday was 16.2 feet.
* Forecast...The river is expected to fall below flood stage late 
  this evening and continue falling to 7.2 feet Friday evening.
* Impact...At 15.0 feet, River Road is completely flooded in low 
  spots between Shepherdstown and Harpers Ferry. Significant 
  portions of the C&O Canal towpath are flooded between McMahons 
  Mill and Dam Number Four.
* Impact...At 16.0 feet, Water goes over the banks of the Potomac 
  near the mouth of the Opequon River.
* Flood History...This crest compares to a previous crest of 15.5 
  feet on 03/07/1979.

&&

River Name     Fld      Observed    Wed   Wed   Wed     Crest       
Location       Stg   Stg  Day/Time  1AM   7AM   1PM   Stg Time Date 

Potomac River
Shepherdstown  15.0  15.6 Tue 7 pm  14.7  13.6  12.4   MSG  unknown 


&&

LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
      3952 7786 3954 7784 3953 7780 3950 7775
      3945 7775 3942 7771

$$

BKF
372 
WGUS81 KLWX 031034
FLSLWX

Flood Statement
National Weather Service Baltimore MD/Washington DC
534 AM EST Wed Mar 3 2021

...The Flood Warning continues for the following rivers in 
Maryland...Virginia...

  Potomac River at Edwards Ferry affecting Loudoun and Montgomery 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

Additional information is available at www.weather.gov/washington or 
www.weather.gov/baltimore.


MDC031-VAC107-031900-
/O.CON.KLWX.FL.W.0009.000000T0000Z-210303T1900Z/
/EDFM2.1.ER.210302T0427Z.210302T2115Z.210303T1300Z.UU/
534 AM EST Wed Mar 3 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Potomac River at Edwards Ferry.
* Until this afternoon.
* At 4:45 AM EST Wednesday the stage was 15.9 feet, or 0.9 feet 
  above flood stage.
* 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 4:45 AM EST Wednesday was 16.2 feet.
* Forecast...The river is expected to fall below flood stage this 
  morning and continue falling to 9.4 feet Friday evening.
* Impact...At 15.0 feet, Water reaches the boat ramp and lower 
  parking area at Edwards Ferry, and begins to inundate areas near 
  Whites Ferry.
* Flood History...No available flood history.

&&

River Name     Fld      Observed    Wed   Wed   Thu     Crest       
Location       Stg   Stg  Day/Time  1PM   7PM   1AM   Stg Time Date 

Potomac River
Edwards Ferry  15.0  15.9 Wed 4 am  14.3  13.5  12.7   MSG  unknown 


&&

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

$$

BJL
339 
WGUS81 KLWX 031851
FLSLWX

Flood Statement
National Weather Service Baltimore MD/Washington DC
151 PM EST Wed Mar 3 2021

...The Flood Warning is cancelled for the following rivers in 
Maryland...Virginia...

  Potomac River at Edwards Ferry affecting Loudoun and Montgomery 
  Counties.

MDC031-VAC107-032000-
/O.CAN.KLWX.FL.W.0009.000000T0000Z-210303T1851Z/
/EDFM2.1.ER.700119T1630Z.700119T1631Z.700119T1633Z.UU/
151 PM EST Wed Mar 3 2021

...The Flood Warning for the Potomac River at Edwards Ferry has been 
cancelled...

The Flood Warning is cancelled for
  the Potomac River at Edwards Ferry.
* At 12:45 PM EST Wednesday the stage was 15.0 feet, and the river 
  has continued to fall below minor flood stage.
* Flood stage is 15.0 feet.
* Forecast...The river is expected to fall to 9.7 feet Saturday 
  morning.

&&

River Name     Fld      Observed    Wed   Thu   Thu     Crest       
Location       Stg   Stg  Day/Time  7PM   1AM   7AM   Stg Time Date 

Potomac River
Edwards Ferry  15.0  15.0 Wed 12 pm 13.9  13.3  12.8   MSG  unknown 


&&

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

$$

BKF

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 Mar 1, 6:06 AM EST, 4 hours 9 minutes earlier.

Area forecast discussion, Mar 1, 6:06 AM EST, 4 hours 9 minutes before
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
606 AM EST Mon Mar 1 2021

.SYNOPSIS...
A warm front will slowly drift northeast through early this morning
before a stronger cold front passes through from northwest to
southeast later this morning into this afternoon. Canadian high
pressure will build overhead through Tuesday before moving offshore
Wednesday. Another cold front will pass through Wednesday night and
Canadian high pressure will build toward the area for late this week
into the weekend.

&&

.NEAR TERM /THROUGH TONIGHT/...
A warm front was creeping northeastward across northern and
central Virginia as of early this morning, and should reach a
position roughly from Martinsburg to DC to the mouth of the
Patuxent River before being overtaken by a cold front around
midday. This cold front was crossing through central West
Virginia just prior to daybreak, and is expected to clear
things out late this morning into early this afternoon.

The cost of clearing will be blustery conditions, however. A
surge of 35 to 45 mph wind gusts is likely behind the front
early this afternoon. It will likely remain breezy, though the
wind may diminish a pinch mid to late afternoon before
increasing this evening into the first part of the overnight as
a secondary cold front pushes through. This secondary front will
bring the true cold air advection, with temperatures falling
below freezing across much of the area by Tuesday morning (the
wind should have dried most surfaces by then, however, so re-
freeze potential seems low at the moment). Wind gusts of 45 to
50 mph appear most likely based on the latest guidance over
northern Maryland into the eastern West Virginia panhandle and
far northern Virginia; this is where a Wind Advisory has been
issued. Gusty winds to near advisory criteria are possible
across the higher elevations further south, as well as into the
DC metro, but confidence was not quite high enough yet to
expand into these areas since the strongest gradient will be a
bit further to the north.

Wind chill temperatures likely fall into the teens by daybreak
Tuesday, with around 0 degree readings over the higher elevations.

&&

.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
High pressure is forecast to build overhead Tuesday, then
offshore Tuesday night into Wednesday as low pressure passes to
the south. Recent model trends have come into better agreement
with the majority of precipitation with this low passing to our
south, though a few instances of precip can't be ruled out
mainly over the Alleghenies as a mid-level trough and reinforcing
cold front swing through late Wednesday, or over southern
portions of the CWA closer to the low. Temperatures should stay
near to below normal during this time.

&&

.LONG TERM /THURSDAY THROUGH SUNDAY/...
A closed upper-level low and its associated surface low will remain
over eastern Canada Thursday through Friday as Canadian high
pressure over central Canada extends southeast into the Great
Lakes. An upper-level trough will remain overhead during this
time. The gradient between the low and the high will allow for
blustery conditions, and with a northwest flow it will turn out
to be chilly for this time of year.

Another jetmax will reinforce the upper-level trough overhead while
Canadian high pressure remains nearby for Saturday and Sunday. This
system will likely cause coastal low pressure to develop, but the
most likely solution is that the low remains well out to sea, so dry
conditions are likely to persist. Cold conditions for this time
of year will remain in place. The trough may begin to depart early
next week, but the high will build overhead during this time,
bringing more dry but chilly conditions.

&&

.AVIATION /11Z MONDAY THROUGH FRIDAY/...
CIGs are improving as of 11z, with mainly VFR expected by
15-17z. Gusty NW flow (up to 35 kts) 16z-05z or so, at least
occasionally through tonight before diminishing Tuesday as high
pressure builds. Low pressure looks to stay far enough south
Wednesday to preclude any restrictions at area terminals.

VFR conditions are expected along with gusty northwest winds
later this week. The strongest northwest winds are most likely
Thursday and Friday behind a cold front with frequent gusts
around 20 to 30 knots possible.

&&

.MARINE...
A sudden onset of gale or near gale force winds is anticipated
around midday (out of a northwesterly direction behind a cold
front). The wind may diminish some mid to late afternoon before
increasing this evening into the overnight behind a secondary
cold front. The wind is forecast to diminish Tuesday into
Wednesday as high pressure builds across and low pressure passes
to the south, though marginal SCA conditions are possible late
Wednesday.

High pressure will slowly build toward the waters Thursday through
Friday, but gusty northwest winds are possible and an SCA will
likely be needed for the waters during this time.

&&

.HYDROLOGY...
The rain will gradually taper off from northwest to southeast
through midday. Additional rainfall totals are expected to be
around a tenth to a quarter inch across most areas, with a
quarter to a half inch possible across central Virginia and the
Allegheny Highlands. The best chance for areal flooding will be in
the Allegheny and Potomac Highlands this morning.

However, excess runoff will continue to move into the main stem
basins, where several river flood watches and warnings are in
effect. Most of the river flooding is expected to be along the
Potomac River and along the larger tributaries that lead into the
Potomac River. Water levels even in the larger rivers should begin
to decline by midweek.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Wind Advisory from 4 PM this afternoon to midnight EST tonight
     for MDZ001-003>006-008-011-501>503-505>508.
VA...Wind Advisory from 4 PM this afternoon to midnight EST tonight
     for VAZ505.
WV...Wind Advisory from 4 PM this afternoon to midnight EST tonight
     for WVZ051>053-503-504.
MARINE...Gale Warning from 10 AM this morning to 6 AM EST Tuesday for
     ANZ530>543.

&&

SYNOPSIS...BJL
NEAR TERM...DHOF
SHORT TERM...DHOF
LONG TERM...BJL
AVIATION...BJL/DHOF
MARINE...BJL/DHOF
HYDROLOGY...BJL
Hazardous weather outlook, Mar 1, 9:33 AM EST, 42 minutes before
Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
933 AM EST Mon Mar 1 2021

ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508-
VAZ052>057-021445-
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-Cecil-Southern Baltimore-
Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-
Central and Southeast Montgomery-Central and Southeast Howard-
Southeast Harford-Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-
933 AM EST Mon Mar 1 2021

This Hazardous Weather Outlook is for the Maryland portion of the
Chesapeake Bay, Tidal Potomac River, and I-95 corridor through
central Maryland, northern Virginia, and District of Columbia.

.DAY ONE...Today and Tonight

A Gale Warning is in effect. Gale force winds may begin abruptly
around midday.

Please consult the latest Flood Warnings for ongoing flooding.

A Wind Advisory is in effect from 2 PM until Midnight for
northern Maryland, including the city of Baltimore.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The Gale Warning continues until 11 AM Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508-
WVZ050>053-055-021445-
Washington-Frederick MD-Carroll-Northern Baltimore-
Northwest Montgomery-Northwest Howard-Northwest Harford-Augusta-
Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke-Nelson-
Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper-
Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-Northern Virginia Blue Ridge-
Central Virginia Blue Ridge-Hampshire-Morgan-Berkeley-Jefferson-
Hardy-
933 AM EST Mon Mar 1 2021

This Hazardous Weather Outlook is for portions of eastern West
Virginia, northern and central Virginia, and central and western
Maryland.

.DAY ONE...Today and Tonight

Please consult the latest Flood Warnings for ongoing flooding.

A Wind Advisory is in effect for northern and central Maryland as
well as the eastern Panhandle of West Virginia and Loudoun County
in Virginia from 2 PM until Midnight. A Wind Advisory is in
effect for the Blue Ridge Mountains from 2 PM until 4 AM.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MDZ001-501-502-VAZ503-504-WVZ501>506-021445-
Garrett-Extreme Western Allegany-Central and Eastern Allegany-
Western Highland-Eastern Highland-Western Grant-Eastern Grant-
Western Mineral-Eastern Mineral-Western Pendleton-
Eastern Pendleton-
933 AM EST Mon Mar 1 2021

This Hazardous Weather Outlook is for the Allegheny Front
counties in western Maryland, eastern West Virginia, and Highland
County Virginia.

.DAY ONE...Today and Tonight

Please consult the latest Flood Warnings for ongoing flooding.

A Wind Advisory is in effect from 2 PM until Midnight for
Garrett, Allegany, Mineral and western Highland counties. A Wind
Advisory is in effect for western Grant and western Pendleton
counties from 2 PM until 4 AM.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Mar 1, 7:39 AM EST, 2 hours 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
739 AM EST MON MAR 01 2021

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

0600 AM     FLOOD            3 SSE ACCIDENT          39.59N  79.30W
03/01/2021                   GARRETT            MD   EMERGENCY MNGR

            ACCIDENT BITTINGER ROAD CLOSED AT AIKEN MILLER ROAD DUE
            TO HIGH WATER.

&&

EVENT NUMBER LWX2103696

CPB
Local storm report, Mar 1, 7:42 AM EST, 2 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
742 AM EST MON MAR 01 2021

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

0600 AM     FLASH FLOOD      6 NNW WARNOCKS          39.54N  79.14W
03/01/2021                   GARRETT            MD   EMERGENCY MNGR

            SAVAGE RIVER ROAD AT BIG RUN ROAD CLOSED DUE TO HIGH
            WATER.

&&

EVENT NUMBER LWX2103697

CPB
Local storm report, Mar 1, 7:44 AM EST, 2 hours 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
744 AM EST MON MAR 01 2021

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

0600 AM     FLOOD            BAYARD                  39.28N  79.36W
03/01/2021                   GARRETT            MD   EMERGENCY MNGR

            ALTHOUSE HILL ROAD CLOSED DUE TO HIGH WATER.

&&

EVENT NUMBER LWX2103698

CPB
Local storm report, Mar 1, 7:47 AM EST, 2 hours 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
747 AM EST MON MAR 01 2021

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

0600 AM     FLOOD            1 WSW OAKLAND           39.40N  79.41W
03/01/2021                   GARRETT            MD   EMERGENCY MNGR

            UNDERWOOD ROAD CLOSED DUE TO HIGH WATER.

&&

EVENT NUMBER LWX2103699

CPB
Local storm report, Mar 1, 7:50 AM EST, 2 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
750 AM EST MON MAR 01 2021

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

0600 AM     FLOOD            5 SW OAKLAND            39.36N  79.48W
03/01/2021                   GARRETT            MD   EMERGENCY MNGR

            SILVER KNOB ROAD CLOSED DUE TO HIGH WATER.

&&

EVENT NUMBER LWX2103700

CPB
Local storm report, Mar 1, 8:08 AM EST, 2 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
808 AM EST MON MAR 01 2021

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

0600 AM     FLOOD            2 SSW GRANTSVILLE       39.68N  79.17W
03/01/2021                   GARRETT            MD   EMERGENCY MNGR

            STATE ROUTE 495 AT MAPLE GROVE ROAD CLOSED DUE TO HIGH
            WATER.

&&

EVENT NUMBER LWX2103701

CPB

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 28, 7:59 PM ESTAreal Flood WarningLWXHighland11 hr
Feb 28, 9:09 PM ESTDense Fog AdvisoryLWXAlbemarle, Amherst, Arlington, Augusta, Clarke, Culpeper and 22 more8 hr
Mar 1, 3:22 AM ESTRiver Flood WatchLWXFairfax, City of Fairfax23 hr
Mar 1, 3:22 AM ESTRiver Flood WarningLWXLoudoun42 hr
Mar 1, 5:26 AM ESTWind AdvisoryLWXAlbemarle, Amherst, Augusta, Greene, Highland, Loudoun and 7 more19 hr
Mar 1, 9:27 AM ESTSmall Craft AdvisoryLWX30 hr
Mar 1, 10:36 AM ESTSpecial Marine WarningLWX54 min
Mar 1, 10:38 AM ESTSpecial Marine WarningLWX75 min
Mar 1, 11:13 AM ESTSpecial Marine WarningLWX92 min
Mar 1, 3:45 AM ESTRiver Flood WarningLWXAllegany7 hr

Nearby

River Flood Warnings in Virginia, 2021River Flood Warnings in Maryland, 2021Every river flood warning in 2021

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.