Alert archive / Maryland / River Flood Warnings in 2021
River Flood Warning 7, NWS Baltimore/Washington
NWS Baltimore/Washington issued this river flood warning at Mar 1, 2021, 3:22 AM EST for Frederick County, Maryland; Loudoun County, Virginia. It took effect at Mar 2, 2021, 2:15 AM EST. It was in force for 19 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 1, 2021, 3:22 AM EST (08:22 UTC)
- In effect from
- Mar 2, 2021, 2:15 AM EST
- Expired
- Mar 2, 2021, 9:10 PM EST
- In force
- 19 hr
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Flood severity
- Minor
Counties Frederick County, MD, Loudoun County, VA
The radar
The Sterling radar (KLWX), 36 km from the middle of the area, began a volume at 08:24 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 Point of Rocks (PORM2). The gauge peaked at 16.39 ft at Mar 2, 2021, 12:00 PM EST.
- Action stage
- 11 ft
- Minor stage
- 16 ft
- Moderate stage
- 20 ft
- Major stage
- 27 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01638500, 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.
482
WGUS41 KLWX 010822
FLWLWX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Baltimore MD/Washington DC
322 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 Point of Rocks affecting Loudoun and Frederick
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.
MDC021-VAC107-012030-
/O.NEW.KLWX.FL.W.0007.210302T0715Z-210303T1113Z/
/PORM2.1.ER.210302T0715Z.210302T1800Z.210303T0512Z.NO/
322 AM EST Mon Mar 1 2021
The National Weather Service in Sterling Virginia has issued a
* Flood Warning for
the Potomac River at Point of Rocks.
* From late tonight to Wednesday morning.
* At 2:45 AM EST Monday the stage was 7.6 feet, or 8.4 feet below
flood stage.
* Flood stage is 16.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just
after midnight tonight to a crest of 18.3 feet early tomorrow
afternoon. It will then fall below flood stage early Wednesday
morning.
* Impact...At 18.0 feet, Water approaches structures at the
Brunswick campground.
* Flood History...This crest compares to a previous crest of 18.3
feet on 03/29/1916.
&&
River Name Fld Observed Mon Mon Mon Crest
Location Stg Stg Day/Time 7AM 1PM 7PM Stg Time Date
Potomac River
Point of Rocks 16.0 7.6 Mon 2 am 8.5 10.3 12.5 18.3 1pm Tue
&&
LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
3920 7754 3927 7760 3930 7770
$$
BJL7 follow-up statements
751
WGUS81 KLWX 011515
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
1015 AM EST Mon Mar 1 2021
...The Flood Warning is extended 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.
WVC027-031-020315-
/O.EXT.KLWX.FL.W.0003.000000T0000Z-210302T1220Z/
/SPRW2.1.ER.210301T1112Z.210302T0000Z.210302T0620Z.NO/
1015 AM EST Mon Mar 1 2021
...The Flood Warning is now in effect until tomorrow morning...
The Flood Warning continues for
the South Branch Potomac River near Springfield.
* Until Tuesday morning.
* At 9:30 AM EST Monday the stage was 15.0 feet, or 0.0 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 9:30 AM EST Monday was 15.0 feet.
* Forecast...The river is expected to rise to a crest of 15.7 feet
this evening. It will then fall below flood stage just after
midnight tonight.
* 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 15.7
feet on 03/27/1978.
&&
River Name Fld Observed Mon Tue Tue Crest
Location Stg Stg Day/Time 7PM 1AM 7AM Stg Time Date
South Branch Potomac River
Springfield 15.0 15.0 Mon 9 am 15.5 15.1 13.3 15.7 7pm Mon
&&
LAT...LON 3907 7900 3915 7897 3942 7877 3953 7863
3951 7854 3936 7870 3905 7894
$$
WVC065-020315-
/O.EXT.KLWX.FL.W.0002.000000T0000Z-210302T2000Z/
/GCPW2.1.ER.210301T0916Z.210302T0000Z.210302T1400Z.NO/
1015 AM EST Mon Mar 1 2021
...The Flood Warning is now in effect until tomorrow afternoon...
The Flood Warning continues for
the Cacapon River near Great Cacapon.
* Until Tuesday afternoon.
* At 9:30 AM EST Monday the stage was 10.5 feet, or 1.5 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 9:30 AM EST Monday was 10.5 feet.
* Forecast...The river is expected to rise to a crest of 10.9 feet
this evening. It will then fall below flood stage late tomorrow
morning.
* Impact...At 11.0 feet, Kilgore Road is flooded in multiple spots.
* Flood History...This crest compares to a previous crest of 10.9
feet on 04/28/1973.
&&
River Name Fld Observed Mon Mon Tue Crest
Location Stg Stg Day/Time 3PM 9PM 3AM Stg Time Date
Cacapon River
Great Cacapon 9.0 10.5 Mon 9 am MSG MSG MSG 10.9 7pm Mon
&&
LAT...LON 3949 7842 3952 7840 3956 7836 3962 7832
3960 7825 3953 7830 3946 7834
$$
MDC043-WVC003-037-020315-
/O.EXT.KLWX.FL.W.0006.210301T2300Z-210303T1200Z/
/SHEW2.1.ER.210301T2300Z.210302T1200Z.210303T0600Z.NO/
1015 AM EST Mon Mar 1 2021
...The Flood Warning is now in effect until Wednesday morning...
The Flood Warning continues for
the Potomac River at Shepherdstown.
* From this evening to Wednesday morning.
* At 9:30 AM EST Monday the stage was 11.6 feet, or 3.4 feet below
flood stage.
* Flood stage is 15.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this
evening to a crest of 17.8 feet tomorrow morning. It will then
fall below flood stage early Wednesday morning.
* Impact...At 16.0 feet, Water goes over the banks of the Potomac
near the mouth of the Opequon River.
* Flood History...This crest compares to a previous crest of 17.8
feet on 03/12/1952.
&&
River Name Fld Observed Mon Tue Tue Crest
Location Stg Stg Day/Time 7PM 1AM 7AM Stg Time Date
Potomac River
Shepherdstown 15.0 11.6 Mon 9 am 15.5 17.2 17.8 17.8 7am Tue
&&
LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
3952 7786 3954 7784 3953 7780 3950 7775
3945 7775 3942 7771
$$
MDC021-VAC107-020315-
/O.EXT.KLWX.FL.W.0007.210302T0900Z-210303T1115Z/
/PORM2.1.ER.210302T0900Z.210302T1800Z.210303T0515Z.NO/
1015 AM EST Mon Mar 1 2021
...The Flood Warning is now in effect until Wednesday morning...
The Flood Warning continues for
the Potomac River at Point of Rocks.
* From late tonight to Wednesday morning.
* At 9:45 AM EST Monday the stage was 9.0 feet, or 7.0 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 early Wednesday 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 17.3
feet on 01/25/1979.
&&
River Name Fld Observed Mon Tue Tue Crest
Location Stg Stg Day/Time 7PM 1AM 7AM Stg Time Date
Potomac River
Point of Rocks 16.0 9.0 Mon 9 am 12.4 15.1 16.8 17.3 1pm Tue
&&
LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
3920 7754 3927 7760 3930 7770
$$
JMG069
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
$$
MDC021-VAC107-021400-
/O.EXT.KLWX.FL.W.0007.210302T0800Z-210303T0843Z/
/PORM2.1.ER.210302T0800Z.210302T1800Z.210303T0243Z.NO/
846 PM EST Mon Mar 1 2021
...The Flood Warning is now in effect until early Wednesday
morning...
The Flood Warning continues for
the Potomac River at Point of Rocks.
* From late tonight to late Tuesday night.
* At 6:45 PM EST Monday the stage was 12.9 feet, or 3.1 feet below
flood stage.
* Flood stage is 16.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
tonight to a crest of 17.3 feet early tomorrow afternoon. It will
then fall below flood stage late tomorrow evening.
* Impact...At 17.0 feet, Water enters the comfort station at the
Brunswick boat ramp parking area.
* Flood History...This crest compares to a previous crest of 17.3
feet on 01/25/1979.
&&
River Name Fld Observed Tue Tue Tue Crest
Location Stg Stg Day/Time 1AM 7AM 1PM Stg Time Date
Potomac River
Point of Rocks 16.0 12.9 Mon 6 pm 15.1 16.5 17.3 17.3 1pm Tue
&&
LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
3920 7754 3927 7760 3930 7770
$$
BKF095
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
$$
MDC043-WVC003-037-021930-
/O.CON.KLWX.FL.W.0006.000000T0000Z-210303T1000Z/
/SHEW2.1.ER.000000T0000Z.210302T1200Z.210303T0400Z.NO/
225 AM EST Tue Mar 2 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Potomac River at Shepherdstown.
* Until late tonight.
* At 1:30 AM EST Tuesday the stage was 17.4 feet, or 2.4 feet above
flood stage.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 1:30 AM EST Tuesday was 17.4 feet.
* Forecast...The river is expected to rise to a crest of 17.5 feet
this morning. It will then fall below flood stage late this
evening.
* Impact...At 16.0 feet, Water goes over the banks of the Potomac
near the mouth of the Opequon River.
* Flood History...This crest compares to a previous crest of 17.6
feet on 05/07/1988.
&&
River Name Fld Observed Tue Tue Tue Crest
Location Stg Stg Day/Time 7AM 1PM 7PM Stg Time Date
Potomac River
Shepherdstown 15.0 17.4 Tue 1 am 17.5 16.8 15.9 17.5 7am Tue
&&
LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
3952 7786 3954 7784 3953 7780 3950 7775
3945 7775 3942 7771
$$
BJL475
WGUS81 KLWX 020955
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
455 AM EST Tue Mar 2 2021
...The Flood Warning continues for the following rivers in
Maryland...Virginia...
Potomac River at Point of Rocks affecting Loudoun and Frederick
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.
MDC021-VAC107-022200-
/O.CON.KLWX.FL.W.0007.000000T0000Z-210303T0651Z/
/PORM2.1.ER.210302T0720Z.210302T1800Z.210303T0051Z.NO/
455 AM 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 2:45 AM EST Tuesday the stage was 15.4 feet, or 0.6 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
this morning to a crest of 16.6 feet this afternoon. It will then
fall below flood stage this evening.
* 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.
* 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 16.6
feet on 03/21/1996.
&&
River Name Fld Observed Tue Tue Wed Crest
Location Stg Stg Day/Time 1PM 7PM 1AM Stg Time Date
Potomac River
Point of Rocks 16.0 15.4 Tue 2 am 16.6 16.1 15.4 16.6 1pm Tue
&&
LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
3920 7754 3927 7760 3930 7770
$$
BJL157
WGUS81 KLWX 021431
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
931 AM EST Tue Mar 2 2021
...The Flood Warning is extended for the following rivers in
Maryland...Virginia...
Potomac River at Point of Rocks affecting Loudoun and Frederick
Counties.
...The Flood Warning continues for the following rivers in
Maryland...West Virginia...
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.
MDC021-VAC107-030245-
/O.EXT.KLWX.FL.W.0007.000000T0000Z-210303T0700Z/
/PORM2.1.ER.210302T0720Z.210302T1800Z.210303T0100Z.NO/
931 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.
* Until late tonight.
* At 8:45 AM EST Tuesday the stage was 16.3 feet, or 0.3 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 8:45 AM EST Tuesday was 16.3 feet.
* Forecast...The river is expected to rise to a crest of 16.6 feet
this afternoon. It will then fall below flood stage this evening.
* 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.
* 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 16.6
feet on 03/01/1903.
&&
River Name Fld Observed Tue Tue Wed Crest
Location Stg Stg Day/Time 1PM 7PM 1AM Stg Time Date
Potomac River
Point of Rocks 16.0 16.3 Tue 8 am 16.6 16.2 15.3 16.6 1pm Tue
&&
LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
3920 7754 3927 7760 3930 7770
$$
MDC043-WVC003-037-030245-
/O.CON.KLWX.FL.W.0006.000000T0000Z-210303T1000Z/
/SHEW2.1.ER.000000T0000Z.210302T1100Z.210303T0400Z.NO/
931 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 8:30 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 8:30 AM EST Tuesday was 17.5 feet.
* Forecast...The river is expected to fall below flood stage late
this evening and continue falling to 7.9 feet Friday morning.
* 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 17.3
feet on 04/01/1960.
&&
River Name Fld Observed Tue Tue Wed Crest
Location Stg Stg Day/Time 1PM 7PM 1AM Stg Time Date
Potomac River
Shepherdstown 15.0 17.4 Tue 8 am 16.8 15.8 14.6 MSG unknown
&&
LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
3952 7786 3954 7784 3953 7780 3950 7775
3945 7775 3942 7771
$$
JMG603
WGUS81 KLWX 022121
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
421 PM EST Tue Mar 2 2021
...The Flood Warning continues for the following rivers in
Maryland...Virginia...West Virginia...
Potomac River at Edwards Ferry affecting Loudoun and Montgomery
Counties.
Potomac River at Point of Rocks affecting Loudoun and Frederick
Counties.
Potomac River at Shepherdstown affecting Jefferson, Washington
and Berkeley Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flood Warning means that flooding is imminent or occurring. All
interested parties should take necessary precautions immediately.
Additional information is available at www.weather.gov/washington or
www.weather.gov/baltimore.
MDC031-VAC107-030930-
/O.EXT.KLWX.FL.W.0009.000000T0000Z-210303T2000Z/
/EDFM2.2.ER.210302T0427Z.210303T0000Z.210303T1400Z.UU/
421 PM EST Tue Mar 2 2021
...The Flood Warning is now in effect until tomorrow afternoon...
The Flood Warning continues for
the Potomac River at Edwards Ferry.
* Until Wednesday afternoon.
* At 3:45 PM EST Tuesday the stage was 16.9 feet, or 1.9 feet above
flood stage.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 3:45 PM EST Tuesday was 16.9 feet.
* Forecast...The river is expected to rise to a crest of 17.0 feet
this evening. It will then fall below flood stage late tomorrow
morning.
* Impact...At 17.0 feet, Floodwaters begin to enter the store at
Whites Ferry.
* Flood History...No available flood history.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 1AM 7AM 1PM Stg Time Date
Potomac River
Edwards Ferry 15.0 16.9 Tue 3 pm 16.6 15.7 14.5 17.0 7pm Tue
&&
LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
3905 7745 3911 7755 3920 7754
$$
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
$$
MDC043-WVC003-037-030930-
/O.CON.KLWX.FL.W.0006.000000T0000Z-210303T1000Z/
/SHEW2.1.ER.000000T0000Z.210302T1100Z.210303T0400Z.NO/
421 PM EST Tue Mar 2 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Potomac River at Shepherdstown.
* Until late tonight.
* At 3:30 PM EST Tuesday the stage was 16.5 feet, or 1.4 feet above
flood stage.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 3:30 PM EST Tuesday was 16.8 feet.
* Forecast...The river is expected to fall below flood stage late
this evening and continue falling to 7.6 feet early Friday
afternoon.
* Impact...At 16.0 feet, Water goes over the banks of the Potomac
near the mouth of the Opequon River.
* Flood History...This crest compares to a previous crest of 16.5
feet on 03/13/1936.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 1AM 7AM 1PM Stg Time Date
Potomac River
Shepherdstown 15.0 16.5 Tue 3 pm 14.8 13.6 12.3 17.5 4am Tue
&&
LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
3952 7786 3954 7784 3953 7780 3950 7775
3945 7775 3942 7771
$$
BKF643
WGUS81 KLWX 030210
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
910 PM EST Tue Mar 2 2021
...The Flood Warning is cancelled for the following rivers in
Maryland...Virginia...
Potomac River at Point of Rocks affecting Loudoun and Frederick
Counties.
MDC021-VAC107-030315-
/O.CAN.KLWX.FL.W.0007.000000T0000Z-210303T0210Z/
/PORM2.1.ER.700119T1631Z.700119T1631Z.700119T1632Z.NO/
910 PM EST Tue Mar 2 2021
...The Flood Warning for the Potomac River at Point of Rocks has
been cancelled...
The Flood Warning is cancelled for
the Potomac River at Point of Rocks.
* At 8:45 PM EST Tuesday the stage was 15.6 feet, or 0.4 feet below
flood stage.
* Flood stage is 16.0 feet.
* Forecast...The river has fallen below flood stage and is expected
to continue to fall to 6.9 feet Friday evening.
&&
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 15.6 Tue 8 pm 15.0 14.0 12.9 MSG unknown
&&
LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
3920 7754 3927 7760 3930 7770
$$
ADSWhat 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 Feb 28, 9:33 PM EST, 5 hours 49 minutes earlier.
Area forecast discussion, Feb 28, 9:33 PM EST, 5 hours 49 minutes before
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
933 PM EST Sun Feb 28 2021
.SYNOPSIS...
A warm front will gradually lift northward across the region
tonight into early Monday as a wave of low pressure passes to
the north. A cold front will then cross the region later
Monday, with a second cold front Monday night. High pressure
will build from the Great Lakes toward the Middle Atlantic
Tuesday. Low pressure will likely pass to the south Wednesday,
with another cold front crossing the area Wednesday night.
&&
.NEAR TERM /THROUGH MONDAY/...
9 PM update: Current thinking still aligns with the previous
forecast. Another push of precipitation currently over the
Ohio/Tennessee Valleys will move through overnight. Expect there
to be continued issues with flooding within the Flood Watch
area. Fog has also started to develop across much of the area
within the current lull in precipitation. A Dense Fog Advisory
has been issued through 4 AM from central Virginia to southern
Maryland, where there are currently some quarter mile
visibility observations. This Dense Fog Advisory may need to be
expanded later tonight if conditions deteriorate further to the
north. However, rain moving in from the southwest may help to
keep visibilities up slightly to the north of the current
advisory area. Previous discussion follows...
With the surface boundary staying south through the
night, continued weaker jet dynamics, expect lighter rain and
drizzle to predominate through this evening. Next wave of low
pressure will then arrive after midnight with another round of
steadier rain, but still lighter than the first round. In
between the two rounds, very high moisture, stable conditions
beneath the warm air advecting in aloft, and light winds look
likely to to promote some fog development, some of which may be
dense. Dense fog advisories may be necessary later this evening
if this does indeed develop, as suggested by several models. The
fog likely diminishes in intensity once the second round of
rain moves in and stirs up the atmosphere just a little bit.
With the warm front creeping north but otherwise not really
crossing our area through the night, temps likely stay about
steady or perhaps rise ever so slowly.
The second wave will push eastward just to our north early
Monday. As it does so, the warm front likely pushes northward
across our region, bringing the area into the warm sector. This
will be relatively brief, but a quick temperature surge into the
60s is possible Monday just before the main cold front blows
through. This is the apt description, as much stronger pressure
gradient combined with the low strengthening as it departs
results in some very gusty winds. Gusts can easily reach 40 mph
on Monday afternoon, and could even touch wind advisory levels.
&&
.SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/...
Secondary cold front will cross the region Monday night, with
more gusty winds and another temperature drop. Winds on land
likely stay a little lighter Monday night, but a significant
temperature drop will put most places below freezing by early
Tuesday. The gradient stays up Tuesday, with highs staying
mostly in the 40s, so after a somewhat spring-like first day of
Meteorological Spring on Monday, Tuesday will feel like we
turned the calendar back a page. Diminishing gradient Tuesday
night will be coupled with increasing clouds as a wave
approaches from the southwest. Latest guidance suggests it is
likely to mostly miss our region to the south, but do have some
chance pops late Tuesday night in our southwestern zones, which
given temps near freezing, would suggest snow is possible.
&&
.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
Wednesday continues to appear mostly dry for the area with low
pressure to our south, keeping the bulk of the moisture for the
Carolinas. Given the set up, any northern shift in the low would
pose the chance for precipitation to our CWA. Wintry
precipitation chances continue to decrease as well, given the
slower progression of the system as it tracks across the
Carolinas. Temperatures will increase to near 50 degrees by
midday, keeping anything that falls in the form of rain.
High pressure will build in from the northern plains, north-
westerly winds will prevail out ahead of it. Should keep
conditions dry for 24-36 hours before the next chance for some
precip. An upper level trough will be introduced to our north
late Thursday/early Friday along with a southern stream wave to
our south. Depending on any retrograding (if any) of the
northern/southern extents, could hint at the potential for
precip, remaining light in nature. High returns for the later
part of Saturday and the remainder of the weekend.
&&
.AVIATION /02Z MONDAY THROUGH FRIDAY/...
IFR to LIFR thru late tonight as warm front is stalled south of
the region, resulting in continued light rain, low clouds and
possibly some areas of dense fog. Clearing likely by midday
Monday as warm front lifts north then cold front pushes back
southeast, but with winds possibly gusting over 35 knots by
afternoon. Remaining windy but VFR Monday night through Tuesday
night.
VFR conditions expected for Wednesday through Thursday given
the southern result of the passing low pressure system across
the Carolinas.
&&
.MARINE...
Light winds this evening north of a warm front. As the front
lifts north late tonight, southerly channeling expected to
develop, so have SCA's starting later on. Warm front clears the
region briefly before cold front blasts through by Monday
afternoon, followed by a secondary front Monday night. Expect
widespread gusts near 30 knots by Monday afternoon with the
first front, possibly reaching low-end gales. A stronger surge
of winds are expected Monday evening through Monday night, and
as a result, a Gale Warning has been issued for all waters from
6 PM Monday through 6 AM Tuesday. Winds likely stay elevated,
though perhaps not quite as strong, Tuesday, then relax some
more Tuesday night.
SCAs possible Wednesday and Thursday, remaining marginal at
this point with SW gusts of 15 to 20 knots possible Wednesday as
low pressure passes to our south. No other marine hazards
expected at this time.
&&
.HYDROLOGY...
Plenty of water in the snow plus rains amounting to 1-3 inches
across our mountain zones will necessitate continuance of flood
watch for these areas through tonight. Larger streams and
rivers will likely continue rising for a day or two, and several
river flood watches and warnings are now in effect. Water
levels even in the larger rivers should begin to decline by
midweek.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Dense Fog Advisory until 4 AM EST Monday for MDZ016>018.
Flood Watch until 4 AM EST Monday for MDZ001-501-502.
VA...Dense Fog Advisory until 4 AM EST Monday for VAZ036>040-050-
051-055>057-502-507-508.
Flood Watch until 4 AM EST Monday for VAZ503-504.
WV...Flood Watch until 4 AM EST Monday for WVZ050-055-501>506.
MARINE...Small Craft Advisory from 10 AM to 6 PM EST Monday for
ANZ530>533-535-536-538>542.
Gale Warning from 6 PM Monday to 6 AM EST Tuesday for
ANZ530>543.
Small Craft Advisory until 6 PM EST Monday for ANZ534-537-543.
&&
SYNOPSIS...RCM
NEAR TERM...RCM/KJP
SHORT TERM...RCM
LONG TERM...ADM
AVIATION...RCM/KJP/ADM
MARINE...RCM/ADM
HYDROLOGY...RCM/KJPHazardous weather outlook, Feb 28, 11:52 PM EST, 3 hours 30 minutes before
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 1152 PM EST Sun Feb 28 2021 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ052>057-011000- 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- 1152 PM EST Sun Feb 28 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...Tonight A Dense Fog Advisory is in effect. .DAYS TWO THROUGH SEVEN...Monday through Saturday The Dense Fog Advisory continues until 8 AM Monday. A Gale Warning is in effect for all waters from 6 PM Monday through 6 AM Tuesday. There is the potential for wind gusts approaching 50 mph across the area late Monday into early Tuesday. Wind advisories may be necessary. .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>053-055-011000- 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- 1152 PM EST Sun Feb 28 2021 This Hazardous Weather Outlook is for portions of eastern West Virginia, northern and central Virginia, and central and western Maryland. .DAY ONE...Tonight There is an isolated threat for flooding of small streams and creeks as well as urban areas through tonight. A Flood Watch is in effect for Hampshire and Hardy Counties in eastern West Virginia where the threat is highest. A Dense Fog Advisory is in effect for the eastern Panhandle of West Virginia, northern Maryland, the northern Shenandoah Valley, and for locations along and east of the Blue Ridge Mountains. Elsewhere, areas of dense fog are possible in the central Shenandoah Valley toward morning. .DAYS TWO THROUGH SEVEN...Monday through Saturday The Dense Fog Advisory continues until 8 AM Monday. A few instances of mainstem river flooding are possible into early next week. Several river flood watches and warnings are in effect. There is the potential for wind gusts approaching 50 mph across the area late Monday into early Tuesday. Wind advisories may be necessary. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MDZ001-501-502-VAZ503-504-WVZ501>506-011000- Garrett-Extreme Western Allegany-Central and Eastern Allegany- Western Highland-Eastern Highland-Western Grant-Eastern Grant- Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- 1152 PM EST Sun Feb 28 2021 This Hazardous Weather Outlook is for the Allegheny Front counties in western Maryland, eastern West Virginia, and Highland County Virginia. .DAY ONE...Tonight A Flood Watch is effect for the entire outlook area. Rapid snow melt resulting from moderate to locally heavy rainfall may lead to the flooding of small streams and creeks as well as urban areas. Areas of dense fog are possible tonight. Dense Fog Advisories may be required. .DAYS TWO THROUGH SEVEN...Monday through Saturday A few instances of mainstem river flooding are possible into early next week. Several river flood watches and warnings are in effect. There is the potential for wind gusts approaching 50 mph across the area late Monday into early Tuesday. Wind advisories may be necessary. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Mar 1, 1:48 AM EST, 1 hour 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
148 AM EST MON MAR 01 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0145 AM FLOOD 4 NNW WILSONIA 39.25N 79.48W
03/01/2021 GARRETT MD 911 CALL CENTER
SAND SPRING ROAD WAS CLOSED DUE TO HIGH WATER.
&&
EVENT NUMBER LWX2103678
BJLLocal storm report, Mar 1, 1:49 AM EST, 1 hour 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
149 AM EST MON MAR 01 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0148 AM FLOOD 2 SSW LOCH LYNN HEIGHTS 39.37N 79.39W
03/01/2021 GARRETT MD 911 CALL CENTER
PLEASANT VALLEY ROAD WAS CLOSE DUE TO HIGH WATER.
&&
EVENT NUMBER LWX2103679
BJLLocal storm report, Mar 1, 1:51 AM EST, 1 hour 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
151 AM EST MON MAR 01 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0150 AM FLOOD 8 WNW BARTON 39.57N 79.16W
03/01/2021 GARRETT MD 911 CALL CENTER
BIG RUN ROAD WAS CLOSED DUE TO HIGH WATER.
&&
EVENT NUMBER LWX2103680
BJLLocal storm report, Mar 1, 1:53 AM EST, 1 hour 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
153 AM EST MON MAR 01 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0152 AM FLOOD OAKLAND 39.40N 79.40W
03/01/2021 GARRETT MD 911 CALL CENTER
NUMEROUS ROADS CLOSED THROUGHOUT THE COUNTY DUE TO HIGH
WATER.
&&
EVENT NUMBER LWX2103681
BJLThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 9:09 PM EST | Dense Fog Advisory | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more | 8 hr |
| Mar 1, 3:22 AM EST | River Flood Watch | LWX | Montgomery | 23 hr |
| Mar 1, 3:45 AM EST | River Flood Warning | LWX | Allegany | 7 hr |
| Mar 1, 5:26 AM EST | Wind Advisory | LWX | Allegany, Baltimore, Carroll, Cecil, Frederick, Harford and 4 more | 19 hr |
| Mar 1, 10:15 AM EST | River Flood Warning | LWX | Montgomery | 52 hr |
| Feb 28, 7:59 PM EST | Areal Flood Warning | LWX | Highland | 11 hr |
| Mar 1, 9:27 AM EST | Small Craft Advisory | LWX | 30 hr | |
| Mar 1, 10:36 AM EST | Special Marine Warning | LWX | 54 min | |
| Mar 1, 10:38 AM EST | Special Marine Warning | LWX | 75 min | |
| Mar 1, 11:13 AM EST | Special Marine Warning | LWX | 92 min |
Nearby
River Flood Warnings in Maryland, 2021River Flood Warnings in Virginia, 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.