Alert archive / Maryland / River Flood Watches in 2021
River Flood Watch 21, NWS Baltimore/Washington
NWS Baltimore/Washington issued this river flood watch at Aug 31, 2021, 11:45 AM EDT for Washington County, Maryland. It took effect at Sep 2, 2021, 10:00 AM EDT. It was in force for .
The area
The outline as issued.
The facts
- Issued
- Aug 31, 2021, 11:45 AM EDT (15:45 UTC)
- In effect from
- Sep 2, 2021, 10:00 AM EDT
- Expired
- Sep 1, 2021, 3:50 PM EDT
- In force
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Flood severity
- None
County Washington County, MD
The radar
The Sterling radar (KLWX), 58 km from the middle of the area, began a volume at 15:47 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 Antietam Creek near Sharpsburg (SACM2). The gauge peaked at 5.36 ft at Sep 2, 2021, 6:00 AM EDT.
- Action stage
- 7 ft
- Minor stage
- 8 ft
- Moderate stage
- 10 ft
- Major stage
- 12 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01619500, 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.
338
WGUS61 KLWX 311545
FFALWX
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Baltimore MD/Washington DC
1145 AM EDT Tue Aug 31 2021
...The National Weather Service in Baltimore MD/Washington DC has
issued a Flood Watch for the following rivers in Maryland...
Antietam Creek near Sharpsburg affecting Washington County.
For the Antietam Creek...including Sharpsburg...flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
The next statement will be issued this evening at 745 PM EDT.
&&
MDZ003-312345-
/O.NEW.KLWX.FL.A.0021.210902T1400Z-210903T1300Z/
/SACM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1145 AM EDT Tue Aug 31 2021
The National Weather Service in Sterling Virginia has issued a
* Flood Watch for
the Antietam Creek near Sharpsburg.
* From Thursday morning to late Friday morning.
* At 10:00 AM EDT Tuesday the stage was 2.7 feet, or 5.3 feet below
flood stage.
* Flood stage is 8.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Thursday morning.
* Impact...At 9.0 feet, Water approaches the lowest corner of the
Old Burnside Bridge. Burnside Bridge Road and Manor Church Road
are flooded and closed, and trails alongside the creek in Antietam
Battlefield are flooded.
&&
River Name Fld Observed Tue Wed Wed Crest
Location Stg Stg Day/Time 8PM 2AM 8AM Stg Time Date
Antietam Creek
Sharpsburg 8.0 2.7 Tue 10 am 2.6 2.6 2.7 9.4 8pm Thu
&&
LAT...LON 3950 7774 3950 7768 3944 7770 3940 7773
3943 7776 3945 7776 3947 7775
$$
KJP5 follow-up statements
723
WGUS61 KLWX 312035
FFALWX
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Baltimore MD/Washington DC
435 PM EDT Tue Aug 31 2021
...The Flood Watch is extended for the following rivers in
Maryland...
Antietam Creek near Sharpsburg affecting Washington County.
For the Antietam Creek...including Sharpsburg...flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay tuned to further developments by listening to your local radio,
television, or NOAA Weather Radio for further information.
Additional information is available at www.weather.gov/washington or
www.weather.gov/baltimore.
The next statement will be issued late tonight at 1245 AM EDT.
&&
MDZ003-010445-
/O.EXT.KLWX.FL.A.0021.210902T1300Z-000000T0000Z/
/SACM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
435 PM EDT Tue Aug 31 2021
The Flood Watch continues for
the Antietam Creek near Sharpsburg.
* From Thursday morning until further notice.
* At 3:00 PM EDT Tuesday the stage was 2.5 feet, or 5.5 feet below
flood stage.
* Flood stage is 8.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Thursday morning.
* Impact...At 9.0 feet, Water approaches the lowest corner of the
Old Burnside Bridge. Burnside Bridge Road and Manor Church Road
are flooded and closed, and trails alongside the creek in Antietam
Battlefield are flooded.
&&
River Name Fld Observed Tue Wed Wed Crest
Location Stg Stg Day/Time 8PM 2AM 8AM Stg Time Date
Antietam Creek
Sharpsburg 8.0 2.5 Tue 3 pm 2.5 2.5 2.7 9.4 8pm Thu
&&
LAT...LON 3950 7774 3950 7768 3944 7770 3940 7773
3943 7776 3945 7776 3947 7775
$$
LFR572
WGUS61 KLWX 010141
FFALWX
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Baltimore MD/Washington DC
941 PM EDT Tue Aug 31 2021
...The Flood Watch is cancelled for the following rivers in
Maryland...West Virginia...
North Branch Potomac River Near Cumberland affecting Central and
Eastern Allegany, Hampshire and Eastern Mineral zones.
...The Flood Watch is extended for the following rivers in
Maryland...West Virginia...
Potomac River at Shepherdstown affecting Jefferson, Washington
and Berkeley Counties.
...The Flood Watch continues for the following rivers in Maryland...
West Virginia...
Potomac River at Paw Paw affecting Morgan, Central and Eastern
Allegany and Hampshire Counties.
Potomac River at Dam Number Five affecting Washington and
Berkeley Counties.
Potomac River at Hancock affecting Washington and Morgan Counties.
Opequon Creek near Martinsburg affecting Jefferson and Berkeley
Counties.
Antietam Creek near Sharpsburg affecting Washington County.
Monocacy River near Frederick affecting Frederick MD zone.
Cacapon River near Great Cacapon affecting Morgan County.
For the Potomac River...including Paw Paw, Hancock, Dam Number Five,
Shepherdstown, Harpers Ferry, Point of Rocks, Edwards Ferry, Little
Falls...flooding is possible.
For the Opequon Creek...including Martinsburg...flooding is possible.
For the Antietam Creek...including Sharpsburg...flooding is possible.
For the Monocacy River...including Frederick...flooding is possible.
For the Cacapon River...including Great Cacapon...flooding is
possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
The next statement will be issued by 0600 AM EDT Wednesday.
&&
MDZ502-WVZ050-504-010245-
/O.CAN.KLWX.FL.A.0015.000000T0000Z-210901T0141Z/
/CBEM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
941 PM EDT Tue Aug 31 2021
The Flood Watch is cancelled for
the North Branch Potomac River Near Cumberland.
* At 8:15 PM EDT Tuesday the stage was 2.6 feet, or 14.4 feet below
flood stage.
* Flood stage is 17.0 feet.
* Forecast...Flood stage may be reached based on the latest forecast
information.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
North Branch Potomac River
Cumberland 17.0 2.6 Tue 8 pm 2.8 3.4 5.6 15.7 8am Thu
&&
LAT...LON 3967 7875 3963 7871 3959 7870 3956 7857
3950 7861 3953 7876 3962 7879
$$
MDZ004-010945-
/O.EXT.KLWX.FL.A.0014.210902T0400Z-210903T1239Z/
/FDKM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
941 PM EDT Tue Aug 31 2021
The Flood Watch continues for
the Monocacy River near Frederick.
* From late Wednesday night to Friday morning.
* At 8:30 PM EDT Tuesday the stage was 2.2 feet, or 12.8 feet below
flood stage.
* Flood stage is 15.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
* Impact...At 20.0 feet, Water reaches Gambrill Mill on the Monocacy
National Battlefield.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
Monocacy River
Frederick 15.0 2.2 Tue 8 pm 2.2 3.2 4.7 20.4 2pm Thu
&&
LAT...LON 3958 7738 3955 7731 3940 7735 3924 7741
3922 7745 3926 7748 3951 7742
$$
WVZ052-053-010945-
/O.EXT.KLWX.FL.A.0012.210902T0800Z-210903T0945Z/
/MBGW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
941 PM EDT Tue Aug 31 2021
The Flood Watch continues for
the Opequon Creek near Martinsburg.
* From late Wednesday night to early Friday morning.
* At 8:30 PM EDT Tuesday the stage was 2.1 feet, or 7.9 feet below
flood stage.
* Flood stage is 10.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
Opequon Creek
Martinsburg 10.0 2.1 Tue 8 pm 2.0 2.2 2.9 13.5 2pm Thu
&&
LAT...LON 3929 7807 3932 7804 3943 7799 3955 7792
3951 7786 3938 7792 3924 7800
$$
MDZ502-WVZ050-051-010945-
/O.EXT.KLWX.FL.A.0011.210902T0900Z-210903T0828Z/
/PAWW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
941 PM EDT Tue Aug 31 2021
The Flood Watch continues for
the Potomac River at Paw Paw.
* From late Wednesday night to early Friday morning.
* At 8:15 PM EDT Tuesday the stage was 4.3 feet, or 20.7 feet below
flood stage.
* Flood stage is 25.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
Potomac River
Paw Paw 25.0 4.3 Tue 8 pm 4.3 4.6 6.3 28.3 2pm Thu
&&
LAT...LON 3956 7857 3956 7850 3965 7843 3965 7832
3949 7844 3950 7856 3950 7861
$$
WVZ051-010945-
/O.EXT.KLWX.FL.A.0009.210902T1000Z-210903T0914Z/
/GCPW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
941 PM EDT Tue Aug 31 2021
The Flood Watch continues for
the Cacapon River near Great Cacapon.
* From Thursday morning to early Friday morning.
* At 8:30 PM EDT Tuesday the stage was 1.9 feet, or 7.1 feet below
flood stage.
* Flood stage is 9.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached Thursday morning.
* Impact...At 12.0 feet, Running Waters Way begins to flood.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
Cacapon River
Great Cacapon 9.0 1.9 Tue 8 pm 1.9 2.0 2.6 12.0 2pm Thu
&&
LAT...LON 3949 7842 3952 7840 3956 7836 3962 7832
3960 7825 3953 7830 3946 7834
$$
MDZ003-WVZ052-010945-
/O.EXT.KLWX.FL.A.0013.210902T1400Z-210903T1605Z/
/PDFM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
941 PM EDT Tue Aug 31 2021
The Flood Watch continues for
the Potomac River at Dam Number Five.
* From Thursday morning to early Friday afternoon.
* At 9:10 PM EDT Tuesday the stage was 1.6 feet, or 19.4 feet below
flood stage.
* Flood stage is 21.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Thursday morning.
* Impact...At 24.0 feet, Water reaches the first floor of the
powerhouse at Dam Number Five, with relatively widespread flooding
ongoing at River Bend.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
Potomac River
Dam Number Five 21.0 1.6 Tue 9 pm 1.5 1.6 2.1 24.5 8pm Thu
&&
LAT...LON 3952 7788 3956 7790 3959 7786 3958 7795
3960 7805 3963 7800 3963 7781 3956 7782
3953 7785 3952 7786
$$
MDZ003-010945-
/O.EXT.KLWX.FL.A.0021.210902T1500Z-210903T0342Z/
/SACM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
941 PM EDT Tue Aug 31 2021
The Flood Watch continues for
the Antietam Creek near Sharpsburg.
* From Thursday morning to late Thursday evening.
* At 8:00 PM EDT Tuesday the stage was 2.5 feet, or 5.5 feet below
flood stage.
* Flood stage is 8.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Thursday morning.
* Impact...At 9.0 feet, Water approaches the lowest corner of the
Old Burnside Bridge. Burnside Bridge Road and Manor Church Road
are flooded and closed, and trails alongside the creek in Antietam
Battlefield are flooded.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
Antietam Creek
Sharpsburg 8.0 2.5 Tue 8 pm 2.5 2.7 3.2 8.8 2pm Thu
&&
LAT...LON 3950 7774 3950 7768 3944 7770 3940 7773
3943 7776 3945 7776 3947 7775
$$
MDZ003-WVZ052-053-010945-
/O.EXT.KLWX.FL.A.0020.210902T1700Z-000000T0000Z/
/SHEW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
941 PM EDT Tue Aug 31 2021
The Flood Watch continues for
the Potomac River at Shepherdstown.
* From Thursday afternoon until further notice.
* At 8:30 PM EDT Tuesday the stage was 2.5 feet, or 12.5 feet below
flood stage.
* Flood stage is 15.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday afternoon.
* Impact...At 24.0 feet, Water begins to cover the parking lot
adjacent to the Shepherdstown boat ramp, and approaches the lowest
point of an adjacent building. Water also reaches the upper
parking area of the boat ramp adjacent to Dam Number Four on the
West Virginia side of the river.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
Potomac River
Shepherdstown 15.0 2.5 Tue 8 pm 2.5 2.6 2.9 24.2 2am Fri
&&
LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
3952 7786 3954 7784 3953 7780 3950 7775
3945 7775 3942 7771
$$
MDZ003-WVZ051-010945-
/O.EXT.KLWX.FL.A.0019.210902T2000Z-210903T0924Z/
/HNKM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
941 PM EDT Tue Aug 31 2021
The Flood Watch continues for
the Potomac River at Hancock.
* From Thursday afternoon to early Friday morning.
* At 8:15 PM EDT Tuesday the stage was 3.7 feet, or 21.3 feet below
flood stage.
* Flood stage is 25.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached Thursday afternoon.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
Potomac River
Hancock 25.0 3.7 Tue 8 pm 3.6 3.7 4.2 26.7 7pm Thu
&&
LAT...LON 3963 7835 3972 7823 3972 7813 3964 7798
3960 7805 3965 7817 3960 7825
$$359
WGUS61 KLWX 010441
FFALWX
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Baltimore MD/Washington DC
1241 AM EDT Wed Sep 1 2021
...The Flood Watch is replaced with a River Flood Warning for the
following rivers in Maryland...
Wills Creek near Cumberland affecting Central and Eastern
Allegany zone.
Monocacy River near Frederick affecting Frederick MD zone.
...The Flood Watch continues for the following rivers in Maryland...
West Virginia...Virginia...
Antietam Creek near Sharpsburg affecting Washington County.
Cacapon River near Great Cacapon affecting Morgan County.
South Branch Potomac River near Springfield affecting Hardy and
Hampshire Counties.
Potomac River at Paw Paw affecting Morgan, Central and Eastern
Allegany and Hampshire Counties.
Potomac River at Dam Number Five affecting Washington and
Berkeley Counties.
Potomac River at Shepherdstown affecting Jefferson, Washington
and Berkeley Counties.
Potomac River at Hancock affecting Washington and Morgan Counties.
Shenandoah River at Millville affecting Clarke, Jefferson and
Warren Counties.
Rappahannock River at Remington affecting Culpeper and Southern
Fauquier zones.
Opequon Creek near Martinsburg affecting Jefferson and Berkeley
Counties.
Seneca Creek at Dawsonville affecting Northwest Montgomery zone.
For the South Branch Potomac River...including Franklin, Moorefield
- SF, Petersburg, Springfield...flooding is possible.
For the Potomac River...including Paw Paw, Hancock, Dam Number Five,
Shepherdstown, Harpers Ferry, Point of Rocks, Edwards Ferry, Little
Falls...flooding is possible.
For the Shenandoah River...including Millville...flooding is
possible.
For the Rappahannock River...including Remington, Fredericksburg,
Fredericksburg...flooding is possible.
For the Wills Creek...including Cumberland...flooding is possible.
For the Opequon Creek...including Martinsburg...flooding is possible.
For the Antietam Creek...including Sharpsburg...flooding is possible.
For the Seneca Creek...including Dawsonville...flooding is possible.
For the Monocacy River...including Frederick...flooding is possible.
For the Cacapon River...including Great Cacapon...flooding is
possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
The next statement will be issued early this morning at 145 AM EDT.
&&
MDZ502-010545-
/O.CAN.KLWX.FL.A.0008.210902T0300Z-210901T0441Z/
/CWCM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch is cancelled for
the Wills Creek near Cumberland
and has been replaced with a Flood Warning.
* At 12:00 AM EDT Wednesday the stage was 2.1 feet, or 7.9 feet
below flood stage.
* Flood stage is 10.0 feet.
* Forecast...Flood stage may be reached late this evening.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Wills Creek
Cumberland 10.0 2.1 Wed 12 am 3.4 6.2 8.6 10.5 1am Thu
&&
LAT...LON 3973 7880 3973 7874 3967 7875 3965 7875
3965 7879 3967 7881 3970 7881
$$
MDZ004-010545-
/O.CAN.KLWX.FL.A.0014.210902T0400Z-210901T0441Z/
/FDKM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch is cancelled for
the Monocacy River near Frederick
and has been replaced with a Flood Warning.
* At 11:30 PM EDT Tuesday the stage was 2.2 feet, or 12.8 feet below
flood stage.
* Flood stage is 15.0 feet.
* Forecast...Flood stage may be reached just after midnight tonight.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 6AM 12PM 6PM Stg Time Date
Monocacy River
Frederick 15.0 2.2 Tue 11 pm MSG MSG MSG 20.4 2pm Thu
&&
LAT...LON 3958 7738 3955 7731 3940 7735 3924 7741
3922 7745 3926 7748 3951 7742
$$
WVZ051-011600-
/O.EXT.KLWX.FL.A.0009.210902T1000Z-210903T0913Z/
/GCPW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Cacapon River near Great Cacapon.
* From Thursday morning to early Friday morning.
* At 11:30 PM EDT Tuesday the stage was 1.9 feet, or 7.1 feet below
flood stage.
* Flood stage is 9.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow morning.
* Impact...At 12.0 feet, Running Waters Way begins to flood.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Cacapon River
Great Cacapon 9.0 1.9 Tue 11 pm 2.0 2.6 4.4 12.0 2pm Thu
&&
LAT...LON 3949 7842 3952 7840 3956 7836 3962 7832
3960 7825 3953 7830 3946 7834
$$
MDZ003-011600-
/O.EXT.KLWX.FL.A.0021.210902T1500Z-210903T0341Z/
/SACM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Antietam Creek near Sharpsburg.
* From Thursday morning to late tomorrow evening.
* At 12:00 AM EDT Wednesday the stage was 2.5 feet, or 5.5 feet
below flood stage.
* Flood stage is 8.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow morning.
* Impact...At 9.0 feet, Water approaches the lowest corner of the
Old Burnside Bridge. Burnside Bridge Road and Manor Church Road
are flooded and closed, and trails alongside the creek in Antietam
Battlefield are flooded.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Antietam Creek
Sharpsburg 8.0 2.5 Wed 12 am 2.7 3.2 4.2 8.8 2pm Thu
&&
LAT...LON 3950 7774 3950 7768 3944 7770 3940 7773
3943 7776 3945 7776 3947 7775
$$
WVZ050-055-011600-
/O.CON.KLWX.FL.A.0017.000000T0000Z-210903T0934Z/
/SPRW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the South Branch Potomac River near Springfield.
* Until early Friday morning.
* At 11:30 PM EDT Tuesday the stage was 1.7 feet, or 13.3 feet below
flood stage.
* Flood stage is 15.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow morning.
* Impact...At 17.0 feet, Water approaches camphouses downstream from
the gage.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
South Branch Potomac River
Springfield 15.0 1.7 Tue 11 pm 1.9 2.7 4.5 17.2 7pm Thu
&&
LAT...LON 3907 7900 3915 7897 3942 7877 3953 7863
3951 7854 3936 7870 3905 7894
$$
MDZ503-011600-
/O.CON.KLWX.FL.A.0016.000000T0000Z-210902T1837Z/
/DAWM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Seneca Creek at Dawsonville.
* Until early tomorrow afternoon.
* At 11:50 PM EDT Tuesday the stage was 2.1 feet, or 5.4 feet below
flood stage.
* Flood stage is 7.5 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow morning.
* Impact...At 7.5 feet, Portions of the Seneca Creek Greenway are
flooded. A small portion of Berryville Road west of Darnestown
begins to flood.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Seneca Creek
Dawsonville 7.5 2.1 Tue 11 pm 2.3 2.5 3.0 7.7 8am Thu
&&
LAT...LON 3914 7736 3914 7730 3912 7729 3909 7730
3907 7731 3907 7736 3910 7736
$$
WVZ052-053-011600-
/O.CON.KLWX.FL.A.0012.210902T0800Z-210903T0945Z/
/MBGW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Opequon Creek near Martinsburg.
* From late tonight to early Friday morning.
* At 11:30 PM EDT Tuesday the stage was 2.1 feet, or 8.0 feet below
flood stage.
* Flood stage is 10.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tonight.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Opequon Creek
Martinsburg 10.0 2.1 Tue 11 pm 2.2 2.9 5.0 13.5 2pm Thu
&&
LAT...LON 3929 7807 3932 7804 3943 7799 3955 7792
3951 7786 3938 7792 3924 7800
$$
MDZ502-WVZ050-051-011600-
/O.CON.KLWX.FL.A.0011.210902T0900Z-210903T0828Z/
/PAWW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Potomac River at Paw Paw.
* From late tonight to early Friday morning.
* At 12:15 AM EDT Wednesday the stage was 4.3 feet, or 20.7 feet
below flood stage.
* Flood stage is 25.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tonight.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Potomac River
Paw Paw 25.0 4.3 Wed 12 am 4.6 6.3 12.2 28.3 2pm Thu
&&
LAT...LON 3956 7857 3956 7850 3965 7843 3965 7832
3949 7844 3950 7856 3950 7861
$$
MDZ003-WVZ052-011600-
/O.CON.KLWX.FL.A.0013.210902T1400Z-210903T1605Z/
/PDFM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Potomac River at Dam Number Five.
* From Thursday morning to early Friday afternoon.
* At 12:10 AM EDT Wednesday the stage was 1.7 feet, or 19.3 feet
below flood stage.
* Flood stage is 21.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow morning.
* Impact...At 24.0 feet, Water reaches the first floor of the
powerhouse at Dam Number Five, with relatively widespread flooding
ongoing at River Bend.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Potomac River
Dam Number Five 21.0 1.7 Wed 12 am 1.6 2.1 3.7 24.5 8pm Thu
&&
LAT...LON 3952 7788 3956 7790 3959 7786 3958 7795
3960 7805 3963 7800 3963 7781 3956 7782
3953 7785 3952 7786
$$
VAZ051-502-011600-
/O.CON.KLWX.FL.A.0022.210902T1634Z-210903T0040Z/
/RENV2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Rappahannock River at Remington.
* From Thursday afternoon to tomorrow evening.
* At 12:15 AM EDT Wednesday the stage was 3.4 feet, or 11.7 feet
below flood stage.
* Flood stage is 15.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early tomorrow afternoon.
* Impact...At 15.0 feet, Tin Pot Run Road and Sumerduck Road near
Remington are flooded.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Rappahannock River
Remington 15.0 3.4 Wed 12 am 3.9 4.4 6.7 15.5 2pm Thu
&&
LAT...LON 3873 7789 3846 7772 3842 7762 3837 7762
3840 7777 3857 7790 3868 7795
$$
MDZ003-WVZ052-053-011600-
/O.CON.KLWX.FL.A.0020.210902T1700Z-000000T0000Z/
/SHEW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Potomac River at Shepherdstown.
* From Thursday afternoon until further notice.
* At 11:30 PM EDT Tuesday the stage was 2.5 feet, or 12.5 feet below
flood stage.
* Flood stage is 15.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early tomorrow afternoon.
* Impact...At 24.0 feet, Water begins to cover the parking lot
adjacent to the Shepherdstown boat ramp, and approaches the lowest
point of an adjacent building. Water also reaches the upper
parking area of the boat ramp adjacent to Dam Number Four on the
West Virginia side of the river.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Potomac River
Shepherdstown 15.0 2.5 Tue 11 pm 2.6 2.9 4.0 24.2 2am Fri
&&
LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
3952 7786 3954 7784 3953 7780 3950 7775
3945 7775 3942 7771
$$
MDZ003-WVZ051-011600-
/O.CON.KLWX.FL.A.0019.210902T2000Z-210903T0924Z/
/HNKM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Potomac River at Hancock.
* From Thursday afternoon to early Friday morning.
* At 12:15 AM EDT Wednesday the stage was 3.7 feet, or 21.3 feet
below flood stage.
* Flood stage is 25.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow afternoon.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Potomac River
Hancock 25.0 3.7 Wed 12 am 3.7 4.2 5.7 26.7 7pm Thu
&&
LAT...LON 3963 7835 3972 7823 3972 7813 3964 7798
3960 7805 3965 7817 3960 7825
$$
VAZ030-031-WVZ053-011600-
/O.CON.KLWX.FL.A.0023.210903T0300Z-210903T1912Z/
/MILW2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1241 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Shenandoah River at Millville.
* From Thursday evening to Friday afternoon.
* At 12:30 AM EDT Wednesday the stage was 2.8 feet, or 7.2 feet
below flood stage.
* Flood stage is 10.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow evening.
* Impact...At 11.0 feet, A small portion of Wilt Road (County Road
9/8) begins to flood. Water also begins to flow over Millville Dam.
&&
River Name Fld Observed Wed Wed Wed Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Shenandoah River
Millville 10.0 2.8 Wed 12 am 2.6 2.8 3.3 10.9 2am Fri
&&
LAT...LON 3897 7821 3905 7805 3935 7778 3932 7772
3914 7785 3895 7807 3892 7816
$$
JMG720
WGUS61 KLWX 011527
FFALWX
Flood Watch
National Weather Service Baltimore MD/Washington DC
1127 AM EDT Wed Sep 1 2021
...The Flood Watch continues for the following rivers in Maryland...
Antietam Creek near Sharpsburg affecting Washington County.
For the Antietam Creek...including Sharpsburg...flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
The next statement will be issued this evening at 730 PM EDT.
&&
MDZ003-012330-
/O.CON.KLWX.FL.A.0021.210902T1500Z-210903T0341Z/
/SACM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1127 AM EDT Wed Sep 1 2021
The Flood Watch continues for
the Antietam Creek near Sharpsburg.
* From Thursday morning to late tomorrow evening.
* At 11:15 AM EDT Wednesday the stage was 2.7 feet, or 5.3 feet
below flood stage.
* Flood stage is 8.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow morning.
* Impact...At 9.0 feet, Water approaches the lowest corner of the
Old Burnside Bridge. Burnside Bridge Road and Manor Church Road
are flooded and closed, and trails alongside the creek in Antietam
Battlefield are flooded.
&&
River Name Fld Observed Wed Thu Thu Crest
Location Stg Stg Day/Time 8PM 2AM 8AM Stg Time Date
Antietam Creek
Sharpsburg 8.0 2.7 Wed 11 am 4.1 5.7 7.1 8.8 2pm Thu
&&
LAT...LON 3950 7774 3950 7768 3944 7770 3940 7773
3943 7776 3945 7776 3947 7775
$$
BKF852
WGUS61 KLWX 011950
FFALWX
Flood Watch
National Weather Service Baltimore MD/Washington DC
350 PM EDT Wed Sep 1 2021
...The Flood Watch is replaced with a River Flood Warning for the
following rivers in Maryland...
Antietam Creek near Sharpsburg affecting Washington County.
MDZ003-012100-
/O.CAN.KLWX.FL.A.0021.210902T1500Z-210901T1950Z/
/SACM2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
350 PM EDT Wed Sep 1 2021
The Flood Watch is cancelled for
the Antietam Creek near Sharpsburg
and has been replaced with a Flood Warning.
* At 3:31 PM EDT Wednesday the stage was 3.3 feet, or 4.7 feet below
flood stage.
* Flood stage is 8.0 feet.
* Forecast...Flood stage may be reached early tomorrow afternoon.
&&
River Name Fld Observed Wed Thu Thu Crest
Location Stg Stg Day/Time 8PM 2AM 8AM Stg Time Date
Antietam Creek
Sharpsburg 8.0 3.3 Wed 3 pm 4.6 6.4 7.6 8.2 2pm Thu
&&
LAT...LON 3950 7774 3950 7768 3944 7770 3940 7773
3943 7776 3945 7776 3947 7775
$$
LFRThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 9:13 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 4 hr |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Washington | 24 hr |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Allegany | 21 days |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Washington | 21 days |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Frederick | 21 days |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Allegany | 64 hr |
| Aug 31, 11:28 AM EDT | River Flood Watch | LWX | Allegany | 21 days |
| Aug 31, 11:29 AM EDT | River Flood Watch | LWX | Montgomery | 63 hr |
| Aug 31, 11:40 AM EDT | River Flood Watch | LWX | Washington | 21 days |
| Aug 31, 11:43 AM EDT | River Flood Watch | LWX | Washington | 21 days |
Nearby
River Flood Watches in Maryland, 2021Every river flood watch 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.