Alert archive / Maryland / River Flood Warnings in 2025
River Flood Warning 21, NWS Baltimore/Washington
NWS Baltimore/Washington issued this river flood warning at May 14, 2025, 10:37 AM EDT for Montgomery County, Maryland; Fairfax County, Virginia. It took effect at May 15, 2025, 5:25 AM EDT. It was in force for 34 hr.
The area
The outline as issued.
The facts
- Issued
- May 14, 2025, 10:37 AM EDT (14:37 UTC)
- In effect from
- May 15, 2025, 5:25 AM EDT
- Expired
- May 16, 2025, 3:04 PM EDT
- In force
- 34 hr
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Flood severity
- Minor
Counties Montgomery County, MD, Fairfax County, VA
The radar
The Sterling radar (KLWX), 23 km from the middle of the area, began a volume at 14:41 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 near Washington DC (Little Falls) (BRKM2). The gauge peaked at 11.71 ft at May 15, 2025, 11:00 PM EDT.
- Action stage
- 5 ft
- Minor stage
- 10 ft
- Moderate stage
- 12 ft
- Major stage
- 14 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01646500, 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.
522
WGUS41 KLWX 141437
FLWLWX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Baltimore MD/Washington DC
1037 AM EDT Wed May 14 2025
...The National Weather Service in Baltimore MD/Washington DC has
issued a Flood Warning for the following rivers in Maryland...West
Virginia...Virginia...
Potomac River at Hancock affecting Morgan and Washington Counties.
Potomac River at Little Falls affecting Montgomery and Fairfax
Counties.
For the Potomac River...including Paw Paw, Hancock, Shepherdstown,
Harpers Ferry, Point of Rocks, Edwards Ferry, Little Falls...
Moderate flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov/washington or
www.weather.gov/baltimore.
The next statement will be issued this evening at 1045 PM EDT.
&&
MDC043-WVC065-150245-
/O.NEW.KLWX.FL.W.0020.250514T1800Z-250515T1212Z/
/HNKM2.1.ER.250514T1800Z.250515T0000Z.250515T0611Z.NO/
1037 AM EDT Wed May 14 2025
...FLOOD WARNING IN EFFECT FROM THIS AFTERNOON TO TOMORROW MORNING...
* WHAT...Minor flooding is forecast.
* WHERE...Potomac River at Hancock.
* WHEN...From this afternoon to tomorrow morning.
* IMPACTS...At 25.0 feet, Water may begin to inundate low points of
the CSX Railroad tracks on the West Virginia side of the river due
to backwater. Additionally, access to Potomac Airpark may be
restricted due to backwater. Water reaches the top of the Hancock
boat ramp and begins to spill over into the adjacent parking lot.
* ADDITIONAL DETAILS...
- At 10:00 AM EDT Wednesday the stage was 23.0 feet, or 2.0
feet below flood stage.
- Forecast...The river is expected to rise above flood stage
this afternoon to a crest of 25.4 feet this evening. It will
then fall below flood stage just after midnight tonight.
- Flood stage is 25.0 feet.
- Flood History...This crest compares to a previous crest of
25.4 feet on 05/19/2011.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Wed Wed Thu Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Hancock 25.0 23.0 Wed 10 am 25.0 25.4 25.1 25.4 8pm Wed
&&
LAT...LON 3963 7835 3972 7823 3972 7813 3964 7798
3960 7805 3965 7817 3960 7825
$$
MDC031-VAC059-150245-
/O.NEW.KLWX.FL.W.0021.250515T1222Z-250517T0143Z/
/BRKM2.1.ER.250515T1222Z.250516T0000Z.250516T1942Z.NO/
1037 AM EDT Wed May 14 2025
...FLOOD WARNING IN EFFECT FROM THURSDAY MORNING TO LATE FRIDAY
EVENING...
...REPLACES RIVER FLOOD WATCH...
* WHAT...Minor flooding is forecast.
* WHERE...Potomac River at Little Falls.
* WHEN...From Thursday morning to late Friday evening.
* IMPACTS...At 11.5 feet, Water covers the towpath in multiple spots
between the Washington Aqueduct Dam and Pennyfield Lock, mileposts
15 to 19 on the C&O Canal.
At 12.0 feet, The C&O Canal overflows at the Great Falls Tavern.
Water covers the towpath in many areas.
* ADDITIONAL DETAILS...
- At 9:45 AM EDT Wednesday the stage was 4.7 feet, or 5.3 feet
below flood stage.
- Forecast...The river is expected to rise above flood stage
tomorrow morning to a crest of 11.8 feet tomorrow evening. It
will then fall below flood stage Friday afternoon.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
11.9 feet on 03/06/1964.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Wed Wed Thu Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Little Falls 10.0 4.7 Wed 9 am 5.1 5.5 7.4 11.8 8pm Thu
&&
LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
3891 7712 3896 7724 3903 7736
$$
CJL8 follow-up statements
849
WGUS41 KLWX 141951
FLWLWX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Baltimore MD/Washington DC
351 PM EDT Wed May 14 2025
...Forecast flooding changed from Minor to Moderate severity and
increased in duration for the following rivers in Virginia...
Maryland...
Potomac River at Little Falls affecting Fairfax and Montgomery
Counties.
For the Potomac River...including Paw Paw, Hancock, Shepherdstown,
Harpers Ferry, Point of Rocks, Edwards Ferry, Little Falls...
Moderate flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov/washington or
www.weather.gov/baltimore.
The next statement will be issued late tonight at 400 AM EDT.
&&
MDC031-VAC059-150800-
/O.EXT.KLWX.FL.W.0021.250515T0923Z-250517T0112Z/
/BRKM2.2.ER.250515T0923Z.250515T1800Z.250516T1912Z.NO/
351 PM EDT Wed May 14 2025
...FLOOD WARNING NOW IN EFFECT FROM LATE TONIGHT TO LATE FRIDAY
EVENING...
* WHAT...Moderate flooding is forecast.
* WHERE...Potomac River at Little Falls.
* WHEN...From late tonight to late Friday evening.
* IMPACTS...At 12.0 feet, The C&O Canal overflows at the Great Falls
Tavern. Water covers the towpath in many areas.
* ADDITIONAL DETAILS...
- At 2:45 PM EDT Wednesday the stage was 5.0 feet, or 5.0 feet
below flood stage.
- Forecast...The river is expected to rise above flood stage
late tonight to a crest of 12.1 feet early tomorrow
afternoon. It will then fall below flood stage Friday
afternoon.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
12.1 feet on 06/15/1952.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Wed Thu Thu Crest
Location Stg Stg Day/Time 8PM 2AM 8AM Stg Time Date
Potomac River
Little Falls 10.0 5.0 Wed 2 pm 5.6 8.7 11.0 12.1 2pm Thu
&&
LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
3891 7712 3896 7724 3903 7736
$$
Belak219
WGUS81 KLWX 150321 RRA
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
1121 PM EDT Wed May 14 2025
...The Flood Warning is extended for the following rivers in
Maryland...Virginia...
Potomac River at Little Falls affecting Fairfax and Montgomery
Counties.
For the Potomac River...including Little Falls...Moderate flooding
is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
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.
The next statement will be issued early Thursday morning.Thursday
morning at 1130 AM EDT.
&&
MDC031-VAC059-151530-
/O.EXT.KLWX.FL.W.0021.250515T1038Z-250517T0430Z/
/BRKM2.2.ER.250515T1038Z.250516T0000Z.250516T2230Z.NO/
1121 PM EDT Wed May 14 2025
...FLOOD WARNING NOW IN EFFECT FROM THURSDAY MORNING TO EARLY
SATURDAY MORNING...
* WHAT...Moderate flooding is forecast.
* WHERE...Potomac River at Little Falls.
* WHEN...From Thursday morning to early Saturday morning.
* IMPACTS...At 12.0 feet, The C&O Canal overflows at the Great Falls
Tavern. Water covers the towpath in many areas.
* ADDITIONAL DETAILS...
- At 10:45 PM EDT Wednesday the stage was 7.1 feet, or 2.9 feet
below flood stage.
- Forecast...The river is expected to rise above flood stage
tomorrow morning to a crest of 12.2 feet tomorrow evening. It
will then fall below flood stage Friday evening.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
12.2 feet on 02/27/1961.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Thu Crest
Location Stg Stg Day/Time 8AM 2PM 8PM Stg Time Date
Potomac River
Little Falls 10.0 7.1 Wed 10 pm 10.5 11.6 12.2 12.2 8pm Thu
&&
LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
3891 7712 3896 7724 3903 7736
$$
DHOF499
WGUS81 KLWX 150917
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
517 AM EDT Thu May 15 2025
...The Flood Warning is extended for the following rivers in
Maryland...West Virginia...Virginia...
Potomac River at Hancock affecting Morgan and Washington Counties.
Potomac River at Little Falls affecting Montgomery and Fairfax
Counties.
...The Flood Warning continues for the following rivers in
Maryland...West Virginia...Virginia...
Potomac River at Shepherdstown affecting Berkeley, Jefferson and
Washington Counties.
Potomac River at Harpers Ferry affecting Jefferson and Washington
Counties.
Potomac River at Edwards Ferry affecting Montgomery and Loudoun
Counties.
Potomac River at Point of Rocks affecting Frederick and Loudoun
Counties.
For the Potomac River...including Paw Paw, Hancock, Shepherdstown,
Harpers Ferry, Point of Rocks, Edwards Ferry, Little Falls...
Moderate flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov/washington or
www.weather.gov/baltimore.
The next statement will be issued this afternoon at 130 PM EDT.
&&
MDC043-WVC065-151730-
/O.EXT.KLWX.FL.W.0020.000000T0000Z-250515T1717Z/
/HNKM2.1.ER.250514T1817Z.250515T0300Z.250515T1117Z.NO/
517 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL THIS AFTERNOON...
* WHAT...Minor flooding is occurring.
* WHERE...Potomac River at Hancock.
* WHEN...Until this afternoon.
* IMPACTS...At 25.0 feet, Water may begin to inundate low points of
the CSX Railroad tracks on the West Virginia side of the river due
to backwater. Additionally, access to Potomac Airpark may be
restricted due to backwater. Water reaches the top of the Hancock
boat ramp and begins to spill over into the adjacent parking lot.
* ADDITIONAL DETAILS...
- At 4:45 AM EDT Thursday the stage was 25.7 feet, or 0.7 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 4:45 AM EDT Thursday was 26.3 feet.
- Forecast...The river is expected to fall below flood stage
this morning and continue falling to 14.0 feet early Sunday
morning.
- Flood stage is 25.0 feet.
- Flood History...This crest compares to a previous crest of
25.6 feet on 02/15/1984.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Hancock 25.0 25.7 Thu 4 am 22.7 20.8 18.5 15.7 8am Sat
&&
LAT...LON 3963 7835 3972 7823 3972 7813 3964 7798
3960 7805 3965 7817 3960 7825
$$
MDC043-WVC003-037-152130-
/O.EXT.KLWX.FL.W.0010.000000T0000Z-250517T0138Z/
/SHEW2.2.ER.000000T0000Z.250515T1200Z.250516T1938Z.NO/
517 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL LATE TOMORROW EVENING...
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Potomac River at Shepherdstown.
* WHEN...Until late tomorrow evening.
* IMPACTS...At 22.0 feet, Water approaches homes on the West
Virginia side of the river near Shepherdstown, and impacts are
also observed on the Maryland side, not just to the C&O Canal
towpath, but also to roads and structures.
* ADDITIONAL DETAILS...
- At 4:45 AM EDT Thursday the stage was 22.7 feet, or 7.7 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 4:45 AM EDT Thursday was 22.7 feet.
- Forecast...The river is expected to rise to a crest of 22.9
feet this morning. It will then fall below flood stage Friday
afternoon.
- Flood stage is 15.0 feet.
- Flood History...This crest compares to a previous crest of
23.0 feet on 06/04/2018.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Shepherdstow 15.0 22.7 Thu 4 am 22.3 20.9 18.9 22.9 8am Thu
&&
LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
3952 7786 3954 7784 3953 7780 3950 7775
3945 7775 3942 7771
$$
MDC031-VAC059-152130-
/O.EXT.KLWX.FL.W.0021.250515T0925Z-250517T0430Z/
/BRKM2.2.ER.250515T0925Z.250516T0000Z.250516T2230Z.NO/
517 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SATURDAY MORNING...
* WHAT...Moderate flooding is forecast.
* WHERE...Potomac River at Little Falls.
* WHEN...Until early Saturday morning.
* IMPACTS...At 12.0 feet, The C&O Canal overflows at the Great Falls
Tavern. Water covers the towpath in many areas.
* ADDITIONAL DETAILS...
- At 4:45 AM EDT Thursday the stage was 9.9 feet, or 0.1 feet
below flood stage.
- Forecast...The river is expected to rise above flood stage
early this morning to a crest of 12.2 feet this evening. It
will then fall below flood stage Friday evening.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
12.2 feet on 02/27/1961.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Little Falls 10.0 9.9 Thu 4 am 11.6 12.2 11.9 12.2 8pm Thu
&&
LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
3891 7712 3896 7724 3903 7736
$$
MDC043-WVC037-152130-
/O.CON.KLWX.FL.W.0017.000000T0000Z-250516T0117Z/
/HFEW2.1.ER.250515T0310Z.250515T1200Z.250515T1917Z.NO/
517 AM EDT Thu May 15 2025
...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE THIS EVENING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Potomac River at Harpers Ferry.
* WHEN...Until late this evening.
* IMPACTS...At 19.5 feet, Floodwaters begin to cover the old federal
armory site at historic Harpers Ferry. Backwater from the
Shenandoah covers most areas between the normal river channel and
the elevated Winchester & Potomac Railroad tracks.
* ADDITIONAL DETAILS...
- At 4:45 AM EDT Thursday the stage was 19.1 feet, or 1.1 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 4:45 AM EDT Thursday was 19.1 feet.
- Forecast...The river is expected to rise to a crest of 19.1
feet this morning. It will then fall below flood stage late
this afternoon.
- Flood stage is 18.0 feet.
- Flood History...This crest compares to a previous crest of
19.1 feet on 05/19/2011.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Harpers Ferr 18.0 19.1 Thu 4 am 18.3 16.9 15.3 19.1 8am Thu
&&
LAT...LON 3934 7767 3931 7769 3931 7776 3941 7779
3942 7771 3938 7771 3935 7770
$$
MDC031-VAC107-152130-
/O.CON.KLWX.FL.W.0016.000000T0000Z-250517T1700Z/
/EDFM2.2.ER.250515T0048Z.250515T1800Z.250517T1100Z.UU/
517 AM EDT Thu May 15 2025
...FLOOD WARNING REMAINS IN EFFECT UNTIL EARLY SATURDAY AFTERNOON...
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Potomac River at Edwards Ferry.
* WHEN...Until early Saturday afternoon.
* IMPACTS...At 20.0 feet, The basements of the Edwards Ferry
Lockhouse and Rileys Lockhouse are flooded. Backwater flooding may
affect homes on the Loudoun County side of the river near Broad
Run in Sterling.
* ADDITIONAL DETAILS...
- At 4:45 AM EDT Thursday the stage was 19.1 feet, or 4.1 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 4:45 AM EDT Thursday was 19.1 feet.
- Forecast...The river is expected to rise to a crest of 21.4
feet this afternoon. It will then fall below flood stage
Saturday morning.
- Flood stage is 15.0 feet.
- Flood History...This crest compares to a previous crest of
21.1 feet on 05/17/2014.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Edwards Ferr 15.0 19.1 Thu 4 am 21.4 21.1 20.2 21.4 2pm Thu
&&
LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
3905 7745 3911 7755 3920 7754
$$
MDC021-VAC107-152130-
/O.CON.KLWX.FL.W.0015.000000T0000Z-250517T0237Z/
/PORM2.2.ER.000000T0000Z.250515T1200Z.250516T2037Z.NO/
517 AM EDT Thu May 15 2025
...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE TOMORROW EVENING...
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Potomac River at Point of Rocks.
* WHEN...Until late Friday evening.
* IMPACTS...At 23.0 feet, Floodwaters completely cover the comfort
station at the Brunswick boat ramp, and reach the comfort station
at the Point of Rocks boat ramp. The upper parking lot at the
Point of Rocks boat ramp begins to flood.
* ADDITIONAL DETAILS...
- At 4:45 AM EDT Thursday the stage was 21.5 feet, or 5.5 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 4:45 AM EDT Thursday was 21.5 feet.
- Forecast...The river is expected to rise to a crest of 23.6
feet this morning. It will then fall below flood stage Friday
afternoon.
- Flood stage is 16.0 feet.
- Flood History...This crest compares to a previous crest of
23.5 feet on 06/18/1910.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Point of Rocks 16.0 21.5 Thu 4 am 23.6 22.6 20.8 23.6 8am Thu
&&
LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
3920 7754 3927 7760 3930 7770
$$
ADS305
WGUS81 KLWX 151437
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
1037 AM EDT Thu May 15 2025
...The Flood Warning is extended for the following rivers in
Maryland...Virginia...West Virginia...
Potomac River at Little Falls affecting Montgomery and Fairfax
Counties.
Potomac River at Hancock affecting Washington and Morgan Counties.
Potomac River at Harpers Ferry affecting Washington and Jefferson
Counties.
Potomac River at Edwards Ferry affecting Loudoun and Montgomery
Counties.
Potomac River at Point of Rocks affecting Loudoun and Frederick
Counties.
Shenandoah River at Millville affecting Jefferson, Warren and
Clarke Counties.
Conococheague Creek at Fairview affecting Washington County.
Cacapon River near Great Cacapon affecting Morgan County.
...The Flood Warning continues for the following rivers in West
Virginia...Maryland...Virginia...
Potomac River at Shepherdstown affecting Washington, Berkeley and
Jefferson Counties.
Rappahannock River at Remington affecting Culpeper and Fauquier
Counties.
...The Flood Warning is cancelled for the following rivers in
Virginia...
Rappahannock River at Fredericksburg affecting Stafford, City of
Fredericksburg and Spotsylvania independent cities.
For the Potomac River...including Paw Paw, Hancock, Shepherdstown,
Harpers Ferry, Point of Rocks, Edwards Ferry, Little Falls...
Moderate flooding is forecast.
For the Shenandoah River...including Millville...Minor flooding is
forecast.
For the Rappahannock River...including Remington, Fredericksburg,
Fredericksburg...Minor flooding is forecast.
For the Cacapon River...including Great Cacapon...Minor flooding is
forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
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.
The next statement will be issued this morning at 1145 AM EDT.
&&
VAC177-179-630-151545-
/O.CAN.KLWX.FL.W.0018.000000T0000Z-250515T1437Z/
/FEDV2.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING IS CANCELLED...
The Flood Warning is cancelled for
the Rappahannock River at Fredericksburg.
* ADDITIONAL DETAILS...
- There is no current observed data.
- Forecast...The river is expected to fall to 4.8 feet Saturday
evening.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time
Date
Rappahannock River
Fredericksburg 13.0 MSG unknown 12.2 11.1 10.8 MSG
unknown
&&
LAT...LON 3828 7750 3835 7745 3834 7743 3831 7741
3829 7741 3826 7742 3827 7747
$$
MDC031-VAC059-160245-
/O.EXT.KLWX.FL.W.0021.000000T0000Z-250517T0508Z/
/BRKM2.2.ER.000000T0000Z.250516T0000Z.250516T2308Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SATURDAY MORNING...
* WHAT...Minor flooding is occurring and moderate flooding is
forecast.
* WHERE...Potomac River at Little Falls.
* WHEN...Until early Saturday morning.
* IMPACTS...At 12.0 feet, The C&O Canal overflows at the Great Falls
Tavern. Water covers the towpath in many areas.
* ADDITIONAL DETAILS...
- At 9:45 AM EDT Thursday the stage was 10.7 feet, or 0.7 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:45 AM EDT Thursday was 10.7 feet.
- Forecast...The river is expected to rise to a crest of 12.1
feet this evening. It will then fall below flood stage
tomorrow evening.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
12.1 feet on 06/15/1952.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Little Falls 10.0 10.7 Thu 9 am 11.4 12.1 12.0 12.1 8pm Thu
&&
LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
3891 7712 3896 7724 3903 7736
$$
MDC043-WVC065-151730-
/O.EXT.KLWX.FL.W.0020.000000T0000Z-250515T1718Z/
/HNKM2.1.ER.250514T1817Z.250515T0300Z.250515T1053Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL THIS AFTERNOON...
* WHAT...No flooding is currently forecast.
* WHERE...Potomac River at Hancock.
* WHEN...Until this afternoon.
* IMPACTS...At 24.0 feet, Water begins to overflow into low lying
areas.
* ADDITIONAL DETAILS...
- At 10:15 AM EDT Thursday the stage was 23.1 feet, or 1.9 feet
below flood stage.
- Forecast...The river is expected to fall to 14.1 feet Sunday
morning.
- Flood stage is 25.0 feet.
- Flood History...This crest compares to a previous crest of
23.1 feet on 04/21/1933.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Hancock 25.0 23.1 Thu 10 am 20.3 19.2 17.8 16.3 8am Sat
&&
LAT...LON 3963 7835 3972 7823 3972 7813 3964 7798
3960 7805 3965 7817 3960 7825
$$
MDC043-152245-
/O.EXT.KLWX.FL.W.0019.000000T0000Z-250515T2231Z/
/FAVM2.1.ER.250514T1318Z.250514T2200Z.250515T1631Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL THIS EVENING...
* WHAT...Minor flooding is occurring.
* WHERE...Conococheague Creek at Fairview.
* WHEN...Until this evening.
* IMPACTS...At 11.0 feet, Several roads, including Wishard Road,
Kemps Mill Road, Independence Road, Cress Pond Road, and Walnut
Point Road, are flooded north of Williamsport.
* ADDITIONAL DETAILS...
- At 9:45 AM EDT Thursday the stage was 10.6 feet, or 0.6 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:45 AM EDT Thursday was 10.8 feet.
- Forecast...The river is expected to fall below flood stage
this afternoon and continue falling to 5.8 feet Sunday
morning.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
10.6 feet on 05/19/1988.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time
Date
Conococheague Creek
Fairview 10.0 10.6 Thu 9 am 9.7 9.0 8.2 7.3 2am Sat
&&
LAT...LON 3972 7786 3972 7776 3966 7778 3958 7781
3961 7784 3963 7786 3965 7787
$$
MDC043-WVC037-160245-
/O.EXT.KLWX.FL.W.0017.000000T0000Z-250516T0331Z/
/HFEW2.1.ER.250515T0310Z.250515T1300Z.250515T2131Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL LATE THIS EVENING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Potomac River at Harpers Ferry.
* WHEN...Until late this evening.
* IMPACTS...At 19.5 feet, Floodwaters begin to cover the old federal
armory site at historic Harpers Ferry. Backwater from the
Shenandoah covers most areas between the normal river channel and
the elevated Winchester & Potomac Railroad tracks.
* ADDITIONAL DETAILS...
- At 9:45 AM EDT Thursday the stage was 19.5 feet, or 1.5 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:45 AM EDT Thursday was 19.6 feet.
- Forecast...The river is expected to fall below flood stage
late this afternoon and continue falling to 10.4 feet Sunday
morning.
- Flood stage is 18.0 feet.
- Flood History...This crest compares to a previous crest of
19.5 feet on 08/11/1898.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Harpers Ferr 18.0 19.5 Thu 9 am 19.0 17.3 15.5 11.7 2pm Sat
&&
LAT...LON 3934 7767 3931 7769 3931 7776 3941 7779
3942 7771 3938 7771 3935 7770
$$
MDC031-VAC107-160245-
/O.EXT.KLWX.FL.W.0016.000000T0000Z-250517T1930Z/
/EDFM2.2.ER.250515T0048Z.250516T0000Z.250517T1330Z.UU/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY AFTERNOON...
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Potomac River at Edwards Ferry.
* WHEN...Until Saturday afternoon.
* IMPACTS...At 20 feet, the basements of the Edwards Ferry and
Rileys Lockhouse are flooded. Backwater flooding may affect homes
on the Loudoun County side of the river near Broad Run in Sterling.
* ADDITIONAL DETAILS...
- At 10:15 AM EDT Thursday the stage was 20.3 feet, or 5.3 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 10:15 AM EDT Thursday was 20.3 feet.
- Forecast...The river will rise to 21.0 feet this evening. It
will then fall below flood stage late Saturday morning to
14.7 feet early Saturday afternoon. It will rise to 14.8 feet
early Sunday morning. It will then fall again and remain
below flood stage.
- Flood stage is 15.0 feet.
- Flood History...This crest compares to a previous crest of
21.1 feet on 05/17/2014.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information.
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Edwards Ferr 15.0 20.3 Thu 10 am 20.9 21.0 20.1 21.0 8pm Thu
&&
LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
3905 7745 3911 7755 3920 7754
$$
MDC021-VAC107-160245-
/O.EXT.KLWX.FL.W.0015.000000T0000Z-250517T0430Z/
/PORM2.2.ER.000000T0000Z.250515T1800Z.250516T2230Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SATURDAY MORNING...
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Potomac River at Point of Rocks.
* WHEN...Until early Saturday morning.
* IMPACTS...At 23.0 feet, Floodwaters completely cover the comfort
station at the Brunswick boat ramp, and reach the comfort station
at the Point of Rocks boat ramp. The upper parking lot at the
Point of Rocks boat ramp begins to flood.
* ADDITIONAL DETAILS...
- At 10:00 AM EDT Thursday the stage was 23.0 feet, or 6.9 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 10:00 AM EDT Thursday was 23.0 feet.
- Forecast...The river is expected to rise to a crest of 23.7
feet this afternoon. It will then fall below flood stage
tomorrow evening.
- Flood stage is 16.0 feet.
- Flood History...This crest compares to a previous crest of
23.5 feet on 06/18/1910.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information.
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Point of Rocks 16.0 23.0 Thu 10 am 23.7 22.6 20.8 23.7 2pm Thu
&&
LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
3920 7754 3927 7760 3930 7770
$$
VAC043-187-WVC037-160245-
/O.EXT.KLWX.FL.W.0014.000000T0000Z-250517T0345Z/
/MILW2.1.ER.000000T0000Z.250515T1800Z.250516T2145Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL LATE TOMORROW EVENING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Shenandoah River at Millville.
* WHEN...Until late tomorrow evening.
* IMPACTS...At 14.0 feet, Several roads along the river in Jefferson
and Clarke Counties are flooded and closed. Most of Watermelon
Park is flooded, along with a significant portion of the Cool
Spring Battlefield property.
* ADDITIONAL DETAILS...
- At 9:30 AM EDT Thursday the stage was 13.3 feet, or 3.2 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:30 AM EDT Thursday was 13.3 feet.
- Forecast...The river is expected to rise to a crest of 13.3
feet this afternoon. It will then fall below flood stage
tomorrow afternoon.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
13.4 feet on 05/10/1960.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Shenandoah River
Millville 10.0 13.3 Thu 9 am 13.3 13.0 12.3 13.3 2pm Thu
&&
LAT...LON 3897 7821 3905 7805 3935 7778 3932 7772
3914 7785 3895 7807 3892 7816
$$
VAC047-061-160245-
/O.EXT.KLWX.FL.W.0012.000000T0000Z-250516T1200Z/
/RENV2.1.ER.250514T1552Z.250515T0215Z.250516T0600Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL TOMORROW MORNING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Rappahannock River at Remington.
* WHEN...Until tomorrow morning.
* ADDITIONAL DETAILS...
- At 9:15 AM EDT Thursday the stage was 16.4 feet, or 1.4 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:15 AM EDT Thursday was 16.6 feet.
- Forecast...The river is expected to fall below flood stage
just after midnight tonight and continue falling to 7.2 feet
Sunday morning.
- Flood stage is 15.0 feet.
- Flood History...This crest compares to a previous crest of
16.4 feet on 05/06/1989.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time
Date
Rappahannock River
Remington 15.0 16.4 Thu 9 am 15.7 15.6 15.0 MSG
unknown
&&
LAT...LON 3873 7789 3846 7772 3842 7762 3837 7762
3840 7777 3857 7790 3868 7795
$$
MDC043-WVC003-037-160245-
/O.EXT.KLWX.FL.W.0010.000000T0000Z-250517T0032Z/
/SHEW2.2.ER.000000T0000Z.250515T1145Z.250516T1832Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL TOMORROW EVENING...
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Potomac River at Shepherdstown.
* WHEN...Until tomorrow evening.
* IMPACTS...At 24.0 feet, Water begins to cover the parking lot
adjacent to the Shepherdstown boat ramp, and approaches the lowest
point of an adjacent building. Water also reaches the upper
parking area of the boat ramp adjacent to Dam Number Four on the
West Virginia side of the river.
* ADDITIONAL DETAILS...
- At 10:00 AM EDT Thursday the stage was 23.2 feet, or 8.2 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 10:00 AM EDT Thursday was 23.2 feet.
- Forecast...The river is expected to fall below flood stage
early tomorrow afternoon and continue falling to 12.4 feet
Sunday morning.
- Flood stage is 15.0 feet.
- Flood History...This crest compares to a previous crest of
23.0 feet on 06/04/2018.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Shepherdstow 15.0 23.2 Thu 10 am 22.1 19.8 17.4 13.8 2pm Sat
&&
LAT...LON 3941 7779 3944 7782 3947 7782 3952 7788
3952 7786 3954 7784 3953 7780 3950 7775
3945 7775 3942 7771
$$
WVC065-160245-
/O.EXT.KLWX.FL.W.0008.000000T0000Z-250516T1251Z/
/GCPW2.1.ER.250514T0740Z.250514T1315Z.250516T0651Z.NO/
1037 AM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL TOMORROW MORNING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Cacapon River near Great Cacapon.
* WHEN...Until tomorrow morning.
* IMPACTS...At 11.0 feet, Kilgore Road is flooded in multiple spots.
* ADDITIONAL DETAILS...
- At 9:30 AM EDT Thursday the stage was 10.3 feet, or 1.3 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:30 AM EDT Thursday was 14.0 feet.
- Forecast...The river will rise to 10.6 feet this afternoon.
It will then fall below flood stage just after midnight
tonight to 7.8 feet early tomorrow afternoon. It will rise to
8.0 feet early Saturday morning. It will then fall again and
remain below flood stage.
- Flood stage is 9.0 feet.
- Flood History...This crest compares to a previous crest of
10.6 feet on 03/01/2021.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Thu Fri Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Cacapon River
Great Cacapo 9.0 10.3 Thu 9 am 10.6 9.8 9.1 10.6 2pm Thu
&&
LAT...LON 3949 7842 3952 7840 3956 7836 3962 7832
3960 7825 3953 7830 3946 7834
$$
KR286
WGUS81 KLWX 152016
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
416 PM EDT Thu May 15 2025
...The Flood Warning continues for the following rivers in
Maryland...Virginia...
Potomac River at Little Falls affecting Fairfax and Montgomery
Counties.
For the Potomac River...including Paw Paw, Hancock, Shepherdstown,
Harpers Ferry, Point of Rocks, Edwards Ferry, Little Falls...
Moderate flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov/washington or
www.weather.gov/baltimore.
The next statement will be issued late tonight at 430 AM EDT.
&&
MDC031-VAC059-160830-
/O.EXT.KLWX.FL.W.0021.000000T0000Z-250517T0430Z/
/BRKM2.2.ER.000000T0000Z.250516T0000Z.250516T2230Z.NO/
416 PM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SATURDAY MORNING...
* WHAT...Minor flooding is occurring and moderate flooding is
forecast.
* WHERE...Potomac River at Little Falls.
* WHEN...Until early Saturday morning.
* IMPACTS...At 12.0 feet, The C&O Canal overflows at the Great Falls
Tavern. Water covers the towpath in many areas.
* ADDITIONAL DETAILS...
- At 3:45 PM EDT Thursday the stage was 11.4 feet, or 1.4 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 3:45 PM EDT Thursday was 11.4 feet.
- Forecast...The river is expected to rise to a crest of 12.2
feet this evening. It will then fall below flood stage
tomorrow evening.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
12.2 feet on 02/27/1961.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Thu Fri Fri Crest
Location Stg Stg Day/Time 8PM 2AM 8AM Stg Time Date
Potomac River
Little Falls 10.0 11.4 Thu 3 pm 12.2 11.9 11.3 12.2 8pm Thu
&&
LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
3891 7712 3896 7724 3903 7736
$$
LFR509
WGUS81 KLWX 160156 RRA
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
956 PM EDT Thu May 15 2025
...The Flood Warning continues for the following rivers in
Maryland...Virginia...
Potomac River at Little Falls affecting Fairfax and Montgomery
Counties.
For the Potomac River...including Paw Paw, Hancock, Shepherdstown,
Harpers Ferry, Point of Rocks, Edwards Ferry, Little Falls...
Moderate flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov/washington or
www.weather.gov/baltimore.
The next statement will be issued Friday morning at 1000 AM EDT.
&&
MDC031-VAC059-161400-
/O.EXT.KLWX.FL.W.0021.000000T0000Z-250517T0300Z/
/BRKM2.1.ER.000000T0000Z.250516T0600Z.250516T2100Z.NO/
956 PM EDT Thu May 15 2025
...FLOOD WARNING NOW IN EFFECT UNTIL LATE TOMORROW EVENING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Potomac River at Little Falls.
* WHEN...Until late tomorrow evening.
* IMPACTS...At 11.5 feet, Water covers the towpath in multiple spots
between the Washington Aqueduct Dam and Pennyfield Lock, mileposts
15 to 19 on the C&O Canal.
* ADDITIONAL DETAILS...
- At 8:45 PM EDT Thursday the stage was 11.7 feet, or 1.7 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:45 PM EDT Thursday was 11.7 feet.
- Forecast...The river is expected to rise to a crest of 11.7
feet just after midnight tonight. It will then fall below
flood stage tomorrow afternoon.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
11.7 feet on 04/14/1961.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Fri Fri Fri Crest
Location Stg Stg Day/Time 2AM 8AM 2PM Stg Time Date
Potomac River
Little Falls 10.0 11.7 Thu 8 pm 11.7 11.4 10.5 11.7 2am Fri
&&
LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
3891 7712 3896 7724 3903 7736
$$
LFR580
WGUS81 KLWX 161410
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
1010 AM EDT Fri May 16 2025
...The Flood Warning continues for the following rivers in
Virginia...Maryland...
Potomac River at Little Falls affecting Montgomery and Fairfax
Counties.
Potomac River at Edwards Ferry affecting Loudoun and Montgomery
Counties.
Potomac River at Point of Rocks affecting Loudoun and Frederick
Counties.
For the Potomac River...including Paw Paw, Hancock, Shepherdstown,
Harpers Ferry, Point of Rocks, Edwards Ferry, Little Falls...Minor
flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov/washington or
www.weather.gov/baltimore.
The next statement will be issued this afternoon at 100 PM EDT.
&&
MDC031-VAC059-162000-
/O.EXT.KLWX.FL.W.0021.000000T0000Z-250516T2000Z/
/BRKM2.1.ER.000000T0000Z.250516T1015Z.250516T1840Z.NO/
1010 AM EDT Fri May 16 2025
...FLOOD WARNING NOW IN EFFECT UNTIL LATE THIS AFTERNOON...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Potomac River at Little Falls.
* WHEN...Until late this afternoon.
* IMPACTS...At 11.0 feet, Water covers the towpath between Swains
Lock and Pennyfield Lock, mileposts 17 to 19 on the C&O Canal.
* ADDITIONAL DETAILS...
- At 9:45 AM EDT Friday the stage was 10.8 feet, or 0.8 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:45 AM EDT Friday was 11.3 feet.
- Forecast...The river is expected to fall below flood stage
this afternoon and continue falling to 5.9 feet Monday
morning.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
10.8 feet on 03/22/1998.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Fri Fri Sat Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Little Falls 10.0 10.8 Fri 9 am 10.1 9.2 8.6 MSG unknown
&&
LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
3891 7712 3896 7724 3903 7736
$$
MDC031-VAC107-170215-
/O.EXT.KLWX.FL.W.0016.000000T0000Z-250517T0900Z/
/EDFM2.2.ER.250515T0048Z.250516T0015Z.250517T0400Z.UU/
1010 AM EDT Fri May 16 2025
...FLOOD WARNING NOW IN EFFECT UNTIL LATE TONIGHT...
* WHAT...Moderate flooding is occurring and minor flooding is
forecast.
* WHERE...Potomac River at Edwards Ferry.
* WHEN...Until late tonight.
* IMPACTS...At 18.5 feet, The parking lot at Edwards Ferry is
completely covered by water. The parking lot at Seneca is
partially flooded.
* ADDITIONAL DETAILS...
- At 9:45 AM EDT Friday the stage was 18.5 feet, or 3.5 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:45 AM EDT Friday was 19.6 feet.
- Forecast...The river is expected to fall below flood stage
just after midnight tonight and continue falling to 9.8 feet
Monday morning.
- Flood stage is 15.0 feet.
- Flood History...No available flood history.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Fri Fri Sat Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Edwards Ferr 15.0 18.5 Fri 9 am 16.9 15.6 14.7 MSG unknown
&&
LAT...LON 3923 7744 3913 7745 3908 7730 3903 7736
3905 7745 3911 7755 3920 7754
$$
MDC021-VAC107-161700-
/O.EXT.KLWX.FL.W.0015.000000T0000Z-250516T1700Z/
/PORM2.2.ER.000000T0000Z.250515T1945Z.250516T1609Z.NO/
1010 AM EDT Fri May 16 2025
...FLOOD WARNING NOW IN EFFECT UNTIL THIS AFTERNOON...
* WHAT...Minor flooding is occurring.
* WHERE...Potomac River at Point of Rocks.
* WHEN...Until this afternoon.
* IMPACTS...At 17.0 feet, Water enters the comfort station at the
Brunswick boat ramp parking area.
* ADDITIONAL DETAILS...
- At 9:45 AM EDT Friday the stage was 16.9 feet, or 0.9 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:45 AM EDT Friday was 18.7 feet.
- Forecast...The river is expected to fall below flood stage
this afternoon and continue falling to 7.1 feet Monday
morning.
- Flood stage is 16.0 feet.
- Flood History...This crest compares to a previous crest of
17.0 feet on 05/20/1988.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Fri Fri Sat Crest
Location Stg Stg Day/Time 2PM 8PM 2AM Stg Time Date
Potomac River
Point of Rocks 16.0 16.9 Fri 9 am 15.3 13.7 12.4 MSG unknown
&&
LAT...LON 3936 7766 3934 7757 3926 7747 3923 7744
3920 7754 3927 7760 3930 7770
$$
BRO024
WGUS81 KLWX 161904
FLSLWX
Flood Statement
National Weather Service Baltimore MD/Washington DC
304 PM EDT Fri May 16 2025
...The Flood Warning is cancelled for the following rivers in
Virginia...Maryland...
Potomac River at Little Falls affecting Fairfax and Montgomery
Counties.
MDC031-VAC059-162015-
/O.CAN.KLWX.FL.W.0021.000000T0000Z-250516T1904Z/
/BRKM2.1.ER.000000T0000Z.250516T1015Z.250516T1822Z.NO/
304 PM EDT Fri May 16 2025
...FLOOD WARNING IS CANCELLED...
The Flood Warning is cancelled for
the Potomac River at Little Falls.
* ADDITIONAL DETAILS...
- At 2:45 PM EDT Friday the stage was 10.0 feet, or 0.1 feet
below flood stage.
- Forecast...The river is expected to fall to 5.9 feet Monday
morning.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information
&&
River Name Fld Observed Fri Sat Sat Crest
Location Stg Stg Day/Time 8PM 2AM 8AM Stg Time Date
Potomac River
Little Falls 10.0 10.0 Fri 2 pm 9.2 8.6 8.1 MSG unknown
&&
LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
3891 7712 3896 7724 3903 7736
$$
BROWhat forecasters said that day
The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this river flood warning went out at May 14, 9:32 AM EDT, 1 hour 5 minutes earlier.
Area forecast discussion, May 14, 9:32 AM EDT, 1 hour 5 minutes before
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
932 AM EDT Wed May 14 2025
.SYNOPSIS...
An upper low will slowly drift northeastward toward the area
today, before shearing out into an open wave and lifting to our
northeast on Thursday. An area of low pressure will track
toward the Upper Midwest and Western Great Lakes by Friday,
before tracking eastward across Quebec and Ontario this weekend.
&&
.NEAR TERM /THROUGH TONIGHT/...
Latest water vapor satellite imagery continues to depict a
potent upper-low spinning across the lower Ohio Valley into the
southern Appalachains. Showers are pivoting to the northeast
concurrently with the low level jet associated with this system,
which is pushing further to our east with each passing hour.
A few showers are lingering across northeastern Maryland, and
will likely do so for the next hour or two. Thankfully, have
seen a downward trend in intensity in the last hour, so not
expecting to see any sort of flooding threat develop from this
feature.
After this departs, all that is left is some light
drizzle/showers, which should decrease in coverage by around
noon or so. This break in the rain has allowed most of our
small streams to recede. However, mainstem river flooding will
continue to be an issue for at least the next 24 to 48 hours.
PREVIOUS DISCUSSION: The upper-low will begin opening as it
continues northeast today. While cloud breaks might be limited,
especially across the northern half of the area, some low level
drying may begin to take place, allowing instability to build,
especially over the southern half of the area. A vort max will
approach during peak heating, and with little inhibition,
widespread showers and scattered thunderstorms are expected to
develop by afternoon. This activity should gradually spread
northeastward through the remainder of the afternoon and
evening. Shear will be marginal, around 20-30 kt, but this could
support a few stronger storms. Lowering freezing levels suggest
a hail threat, but the marginal shear combined with moist
profiles will likely limit the threat for severe winds and hail.
00Z CAMs suggest the strongest storms will be over southeastern
Virginia, perhaps making a run toward the lower Potomac area.
The severe threat will lessen with northward extent due to
decreasing instability. Renewed flooding will also be a concern.
Heavy rain will not be as widespread as Tuesday with average
rainfall amounts less than an inch expected. Precipitable water
values are also lower, and the forcing should be somewhat
progressive. However, slow storm motions less than 20 kt could
pose an issue in any storms that could produce rain rates of
1-1.5 inches in an hour or two. At the moment, the threat for
flooding seems to be isolated. However, given many sensitive
areas and high streams across the area, this will continue to be
evaluated. Temperatures should push into the 70s for most
areas, warmest in the southwest.
Remnant showers will gradually lift to the northeast tonight
with low clouds and fog possible again. Lows will be in the mid
50s to mid 60s.
&&
.SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/...
The weakening trough axis and possible weak surface low will be
near the Chesapeake Bay Thursday morning. This means any
remaining showers northeast of the Potomac should pivot away
during the morning hours. More breaks of sun are likely, which
will allow temperatures to rise toward 80. Not a lot of
confidence in the precipitation forecast thereafter. Advection
of a high theta-e airmass will be approaching from the west.
Other than possible terrain lift, forcing is otherwise nebulous
through the day. However, CAMs suggest some storms may develop
over the central Appalachians at a minimum. Given steepening
lapse rates and increasing shear, some storms could be severe.
However rising heights could limit storm strength. SPC has added
a Marginal Risk for severe for now.
The uncertainty theme continues Thursday night through Friday
night as possible upstream convection moves toward the area. The
airmass will be characterized by steep lapse rates and strong
shear, so storms may be able to maintain themselves. Depending
on how the airmass is modified by upstream convection, Friday
in particular could have a high end CAPE/shear parameter space
across the area. However, the atmosphere may remain capped with
little to no storm development. Hopefully this becomes clearer
with time. What's more certain is that it will turn hot and
humid Friday, with highs well into the 80s and dew points in the
mid 60s to lower 70s.
&&
.LONG TERM /SATURDAY THROUGH TUESDAY/...
A low pressure system will bring a cold front across the region
on Saturday. Showers and thunderstorms will develop ahead of
and along this front Saturday afternoon. Temperatures will be on
the warm side with highs in the middle 80s.
A drier day in store for the region Sunday through Tuesday with high
pressure building across the region. Highs in the upper 70s to lower
80s with lower humidity.
The next chance for showers or thunderstorms could come with a front
late Tuesday into Tuesday night.
&&
.AVIATION /13Z WEDNESDAY THROUGH SUNDAY/...
Light rain and drizzle continue across all terminals at this
time, accompanied by IFR to LIFR CIGs. This should gradually
start to improve to some extent through mid-late morning as
drier air starts to push into the region from the SW. Starting
to see some evidence of improvement at CHO already in terms of
VSBYS, but not expecting CIGs to improve substantially until
probably close to noon.
Ceilings will gradually lift to MVFR and potentially even VFR
during the afternoon hours. Showers and thunderstorms will form
during the afternoon, generally progressing southwest to
northeast. Thunderstorms are most likely at CHO, but may be more
scattered once they reach the metro terminals (thus PROB30
groups for now). Showers may linger at BWI/MTN into the night.
Otherwise, expect a return to IFR to perhaps LIFR ceilings.
Light E to S winds are expected through the TAF period.
Conditions improve to VFR on Thursday. The highest chance for an
afternoon/evening thunderstorm appears to be at CHO, but this is
highly uncertain. Sub-VFR conditions (ceilings or fog) may
return to mainly MRB/BWI/MTN Thursday night. There is also
potential for one or more rounds of showers and thunderstorms
late Thursday night through Friday night, but details are very
uncertain at this time.
MVFR conditions could arise with showers and thunderstorms Saturday
afternoon into early evening. Winds will be southerly before
shifting to southwesterly by Friday. Winds southwest becoming west 5
to 10 knots Saturday and Saturday night. Winds west becoming
northwest 5 to 10 knots Sunday and Sunday night.
&&
.MARINE...
With the latest forecast package this morning, SCAs were
cancelled in the northern Chesapeake Bay, so no marine hazards
are in effect at this time. Winds will generally diminish today
as the low-level jet continues its departure north and east.
For the remainder of the day, light east to south winds are
expected through Thursday. Strong thunderstorms could approach
from the south later this afternoon into the evening, which
could warrant Special Marine Warnings.
South to southwest winds should remain sub-SCA Thursday night through
Friday night . The main concern will come from thunderstorms,
although the timing, coverage, and strength of any storms is
very uncertain at this time.
Showers and thunderstorms that develop Saturday afternoon over or
near the waters could pose for a Special Marine Warning in places.
Otherwise, no marine hazards expected Saturday night through Sunday
night. Winds southwest to west 10 knots Saturday and Saturday night.
Winds becoming northwest 10 knots Sunday.
&&
.TIDES/COASTAL FLOODING...
Tidal anomalies have really fallen off this morning, down to
around 1-1.25 feet above normal at this time. Many of the
Coastal Flood Advisories that were in effect have either come
and gone, or never quite reached minor flood stage to begin
with. General improvement is expected for most in the coming
days, but a generally light southerly flow will continue to
bring the more sensitive tidal sites near/into action stage.
However, Georgetown will likely have some freshwater related
flooding by Thursday, and a Coastal Flood Watch remains in
effect for this threat. Current forecast brings Georgetown to
Moderate for much of the day on Thursday as a result of the
freshwater influence flowing down from the west.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...Coastal Flood Watch from Thursday morning through Friday
afternoon for DCZ001.
MD...Coastal Flood Advisory until 10 AM EDT this morning for MDZ011-
014.
Coastal Flood Advisory until 3 PM EDT this afternoon for
MDZ508.
VA...None.
WV...None.
MARINE...None.
&&
SYNOPSIS...ADS
NEAR TERM...ADS/CJL
SHORT TERM...ADS
LONG TERM...KLW
AVIATION...ADS/KLW/CJL
MARINE...ADS/KLW/CJL
TIDES/COASTAL FLOODING...CJLHazardous weather outlook, May 14, 4:58 AM EDT, 5 hours 39 minutes before
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 458 AM EDT Wed May 14 2025 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ053>057-527-150900- 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-Fairfax-Arlington/Falls Church/Alexandria- Stafford-Spotsylvania-King George- Central and Southeast Prince William/Manassas/Manassas Park- 458 AM EDT Wed May 14 2025 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 While heavy rain will not be as widespread as Tuesday, isolated instances of flash flooding are possible this afternoon and evening as showers and thunderstorms move across the area. Strong thunderstorms may require Special Marine Warnings for the tidal waters this afternoon and evening. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday A River Flood Watch is in effect for the Potomac River upstream of Washington DC Thursday into Friday. A Coastal Flood Watch for this freshwater flooding is also in effect for Georgetown. Severe thunderstorms capable of producing damaging winds and hail are possible Friday, but confidence is low at this time. .SPOTTER INFORMATION STATEMENT... Spotters are requested to report flooding and rainfall measurements to the National Weather Service. MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508- 526-WVZ050>053-055-150900- 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-Northwest Prince William-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 458 AM EDT Wed May 14 2025 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 Small stream flooding will continue in some areas through this morning. Visit weather.gov for the latest warnings. River Flood Watches and Warnings are also in effect for portions of the Potomac, Shenandoah, and Rappahannock basins. While heavy rain will not be as widespread as Tuesday, isolated instances of flash flooding are possible this afternoon and evening as showers and thunderstorms move across the area. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday River Flood Watches and Warnings continue through early Friday. Severe thunderstorms capable of producing damaging winds and hail are possible Friday, but confidence is low at this time. .SPOTTER INFORMATION STATEMENT... Spotters are requested to report flooding and rainfall measurements to the National Weather Service. MDZ501-502-509-510-VAZ503-504-WVZ501>506-150900- Extreme Western Allegany-Central and Eastern Allegany- Western Garrett-Eastern Garrett-Western Highland-Eastern Highland- Western Grant-Eastern Grant-Western Mineral-Eastern Mineral- Western Pendleton-Eastern Pendleton- 458 AM EDT Wed May 14 2025 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 Small stream flooding will continue in some areas through this morning. Visit weather.gov for the latest warnings. River Flood Warnings are also in effect for portions of the North Branch Potomac basin. While heavy rain will not be as widespread as Tuesday, isolated instances of flash flooding are possible this afternoon and evening as showers and thunderstorms move across the area. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Severe thunderstorms capable of producing damaging winds and hail are possible Friday, but confidence is low at this time. .SPOTTER INFORMATION STATEMENT... Spotters are requested to report flooding and rainfall measurements to the National Weather Service.
In the hours before
Local storm report, May 14, 10:07 AM EDT, 30 minutes before
Preliminary Local Storm Report
National Weather Service Baltimore MD/Washington DC
1007 AM EDT Wed May 14 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0705 AM Flood 4 NNE Everona 38.36N 77.95W
05/14/2025 Orange VA Emergency Mngr
Raccoon Ford Road closed due to flooding near the
Rapidan River.
&&
Event Number LWX2504768
JMGLocal storm report, May 14, 10:10 AM EDT, 27 minutes before
Preliminary Local Storm Report
National Weather Service Baltimore MD/Washington DC
1010 AM EDT Wed May 14 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM Flood 1 NNE Old Somerset 38.23N 78.22W
05/14/2025 Orange VA Emergency Mngr
Liberty Mills Road closed due to flooding near Blue
Ridge Turnpike.
&&
Event Number LWX2504769
JMGLocal storm report, May 14, 10:14 AM EDT, 23 minutes before
Preliminary Local Storm Report
National Weather Service Baltimore MD/Washington DC
1014 AM EDT Wed May 14 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM Flood 3 NNE Verdiersville 38.31N 77.88W
05/14/2025 Orange VA Emergency Mngr
Old Office Road closed due to flooding near Black
Walnut Drive and Holman Drive.
&&
Event Number LWX2504770
JMGThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 8:25 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Harford, City of Baltimore | 18 hr |
| May 13, 8:35 PM EDT | Areal Flood Warning | LWX | Allegany, Washington | 5 hr |
| May 13, 9:29 PM EDT | River Flood Warning | LWX | Washington | 61 hr |
| May 13, 10:01 PM EDT | Areal Flood Warning | LWX | Washington | 31 hr |
| May 14, 4:35 AM EDT | River Flood Watch | LWX | Washington | 5 hr |
| May 14, 4:35 AM EDT | River Flood Warning | LWX | Frederick | 56 hr |
| May 14, 4:35 AM EDT | River Flood Warning | LWX | Montgomery | 67 hr |
| May 14, 4:35 AM EDT | River Flood Warning | LWX | Washington | 42 hr |
| May 14, 5:26 AM EDT | Areal Flood Warning | LWX | Allegany, Washington | 9 hr |
| May 14, 6:37 AM EDT | Areal Flood Warning | LWX | Washington | 6 hr |
| May 14, 9:29 AM EDT | River Flood Warning | LWX | Washington | 31 hr |
| May 14, 10:37 AM EDT | River Flood Warning | LWX | Washington | 27 hr |
| May 14, 11:38 AM EDT | Flood Watch | LWX | Allegany, Garrett | 12 hr |
| May 14, 12:29 PM EDT | Areal Flood Warning | LWX | Allegany | 6 hr |
| May 13, 9:11 PM EDT | Areal Flood Warning | LWX | Nelson | 3 hr |
| May 13, 9:35 PM EDT | Flash Flood Warning | LWX | Greene | 3 hr |
| May 13, 10:07 PM EDT | Flash Flood Warning | LWX | Madison | 2 hr |
| May 13, 10:59 PM EDT | Flash Flood Warning | LWX | Frederick, Shenandoah, Warren | 102 min |
| May 14, 12:45 AM EDT | Areal Flood Warning | LWX | Albemarle, Greene, Madison, Orange | 12 hr |
| May 14, 1:00 AM EDT | River Flood Warning | LWX | Culpeper, Orange, Spotsylvania | 28 hr |
| May 14, 1:43 AM EDT | Areal Flood Warning | LWX | Culpeper | 19 hr |
| May 14, 4:35 AM EDT | River Flood Warning | LWX | Culpeper, Fauquier | 41 hr |
| May 14, 4:35 AM EDT | River Flood Warning | LWX | Clarke, Warren | 53 hr |
| May 14, 4:35 AM EDT | River Flood Warning | LWX | Spotsylvania, Stafford, City of Fredericksburg | 30 hr |
| May 14, 6:54 AM EDT | Areal Flood Warning | LWX | Warren | 8 hr |
| May 14, 7:43 PM EDT | Flash Flood Warning | LWX | Albemarle, Greene, Madison, Orange | 2 hr |
| May 14, 7:59 PM EDT | Flash Flood Warning | LWX | Frederick, Greene, Madison, Page, Rappahannock, Rockingham and 2 more | 109 min |
Nearby
River Flood Warnings in Maryland, 2025River Flood Warnings in Virginia, 2025Every river flood warning in 2025
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.