Coastal Flood Warnings/Watches/Statements
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
504
WHUS41 KLWX 221034
CFWLWX
Coastal Hazard Message
National Weather Service Baltimore MD/Washington DC
634 AM EDT Fri Aug 22 2025
MDZ014-221845-
/O.CON.KLWX.CF.W.0004.000000T0000Z-250823T1400Z/
/O.CON.KLWX.CF.Y.0034.250823T1400Z-250824T1500Z/
Anne Arundel-
634 AM EDT Fri Aug 22 2025
...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 10 AM EDT
SATURDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY
TO 11 AM EDT SUNDAY...
* WHAT...For the Coastal Flood Warning, one to two feet of
inundation above ground level in low lying areas due to tidal
flooding. For the Coastal Flood Advisory, up to one half foot
of inundation above ground level expected in low lying areas
due to tidal flooding.
* WHERE...Shoreline in Anne Arundel County.
* WHEN...For the Coastal Flood Warning, until 10 AM EDT
Saturday, especially around the time of high tide. For the
Coastal Flood Advisory, from 10 AM Saturday to 11 AM EDT
Sunday, especially around the time of high tide.
* IMPACTS...At 3.5 feet, water reaches the floor of the Maritime
Museum in Annapolis, begins to cover Bowyer Road on the Naval
Academy campus, and numerous businesses on Dock Street are
flooded, along with the City Dock parking lot. Bayside Beach
begins to flood around Harbor Rd and Lake Dr.
* ADDITIONAL DETAILS...Tides one and a half to two feet above
normal. The next high tide at Annapolis U.S. Naval Academy is at 5:23
PM and 6:10 AM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take the necessary actions to protect flood-prone property. If
travel is required, do not drive around barricades or through
water of unknown depth.
&&
Time of high total tides are approximate to the nearest hour.
Severn River at Annapolis
MLLW Categories - Minor 2.6 ft, Moderate 3.3 ft, Major 5.0 ft
MHHW Categories - Minor 1.2 ft, Moderate 1.9 ft, Major 3.6 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
22/06 AM 3.4 2.0 1.7 0.5 Moderate
22/05 PM 3.4 2.0 2.0 0.5 Moderate
23/06 AM 3.6 2.2 1.9 0.5 Moderate
23/06 PM 3.0 1.6 1.6 1.0 Minor
24/05 AM 3.0 1.6 1.5 1.0 Minor
24/07 PM 2.7 1.3 1.2 1.0 Minor
&&
$$
MDZ508-221845-
/O.EXA.KLWX.CF.Y.0033.000000T0000Z-250824T1100Z/
Southeast Harford-
634 AM EDT Fri Aug 22 2025
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 7 AM EDT SUNDAY...
* WHAT...Up to one foot of inundation above ground level in low
lying areas due to tidal flooding.
* WHERE...Shoreline in Southeast Harford County.
* WHEN...Until 7 AM EDT Sunday, especially around the time of
high tide.
* IMPACTS...At 4.5 feet, portions of the Havre de Grace Yacht
Basin are flooded, along with Hutchins Park.
* ADDITIONAL DETAILS...Tides one and a half to two feet above
normal. The next high tide at Havre de Grace is at 9:38 AM and
10:20 PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
Chesapeake Bay at Havre de Grace MD
MLLW Categories - Minor 4.0 ft, Moderate 5.5 ft, Major 7.0 ft
MHHW Categories - Minor 2.2 ft, Moderate 3.7 ft, Major 5.2 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
22/10 AM 4.3 1.9 1.7 1.0 Minor
22/11 PM 4.3 1.9 1.8 1.0 Minor
23/11 AM 4.5 2.1 1.9 1.0 Minor
23/11 PM 4.3 1.9 1.7 1.0 Minor
24/11 AM 4.1 1.7 1.6 1.0 Minor
25/12 AM 3.9 1.5 1.3 1.0 None
&&
$$
MDZ011-018-221845-
/O.CON.KLWX.CF.Y.0033.000000T0000Z-250824T1100Z/
Southern Baltimore-Calvert-
634 AM EDT Fri Aug 22 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 AM EDT
SUNDAY...
* WHAT...Up to one foot of inundation above ground level in low
lying areas due to tidal flooding.
* WHERE...Southern Baltimore and Calvert Counties.
* WHEN...Until 7 AM EDT Sunday, especially around the time of
high tide.
* IMPACTS...At 3.5 feet, flooding is occurring at the end of
Thames Street in Baltimore. Water covers the promenade in the
Inner Harbor in multiple locations. At 3.0 feet, water begins
encroaching upon yards in the Bowleys Quarters area. At 3.0
feet, water is expected to reach backyards near 9th Street in
North Beach, and could approach 9th Street. At 3.5 feet, yards
are flooded near Charles Street and Williams Street in
Solomons. Nearby parking lots and the streets themselves are
covered by more than a half foot of water.
* ADDITIONAL DETAILS...Tides two to two and a half feet above
normal. The next high tide at Fort McHenry Baltimore is at 6:50
AM and 6:50 PM. The next high tide at Chesapeake Beach is at
4:03 PM and 4:46 AM. The next high tide at Solomons Island is at 2:15
PM and 2:56 AM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
NW Branch Patapsco River at Baltimore MD
MLLW Categories - Minor 3.4 ft, Moderate 4.6 ft, Major 6.0 ft
MHHW Categories - Minor 1.7 ft, Moderate 2.9 ft, Major 4.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
22/07 AM 3.5 1.8 1.5 0.5 Minor
22/07 PM 3.5 1.8 2.0 0.5 Minor
23/07 AM 3.8 2.1 1.9 0.5 Minor
23/07 PM 3.7 2.0 2.1 0.5 Minor
24/08 AM 3.7 2.0 1.8 0.5 Minor
24/08 PM 2.9 1.2 1.2 0.5 None
Chesapeake Bay at Bowleys Quarters
MLLW Categories - Minor 3.0 ft, Moderate 3.8 ft, Major 5.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 2.1 ft, Major 3.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
22/08 AM 3.0 1.3 1.0 0.5 Minor
22/07 PM 3.0 1.3 1.4 0.5 Minor
23/08 AM 3.5 1.8 1.5 0.5 Minor
23/08 PM 3.0 1.3 1.3 1.0 Minor
24/08 AM 3.2 1.5 1.3 1.0 Minor
24/08 PM 2.7 1.0 1.0 1.0 None
Chesapeake Bay at North Beach
MLLW Categories - Minor 3.0 ft, Moderate 4.0 ft, Major 5.0 ft
MHHW Categories - Minor 1.6 ft, Moderate 2.6 ft, Major 3.6 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
22/06 AM 3.1 1.7 1.3 0.5 Minor
22/05 PM 3.1 1.7 1.6 0.5 Minor
23/06 AM 3.4 2.0 1.6 0.5 Minor
23/05 PM 2.9 1.5 1.4 1.0 None
24/06 AM 3.1 1.7 1.4 1.0 Minor
24/07 PM 2.7 1.3 1.1 1.0 None
Patuxent River at Solomons Island
MLLW Categories - Minor 3.0 ft, Moderate 4.0 ft, Major 5.0 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 3.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
22/02 PM 3.3 1.8 1.7 1.0 Minor
23/02 AM 3.5 2.0 1.8 1.0 Minor
23/02 PM 3.2 1.7 1.6 1.0 Minor
24/04 AM 3.3 1.8 1.6 1.0 Minor
24/03 PM 2.9 1.4 1.3 1.0 None
25/04 AM 2.9 1.4 1.2 1.0 None
&&
$$
MDZ016-VAZ057-221845-
/O.CON.KLWX.CF.Y.0033.000000T0000Z-250824T1100Z/
Charles-King George-
634 AM EDT Fri Aug 22 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 AM EDT
SUNDAY...
* WHAT...Up to one foot of inundation above ground level in low
lying areas due to tidal flooding.
* WHERE...Shoreline in Charles and King George Counties.
* WHEN...Until 7 AM EDT Sunday, especially around the time of
high tide.
* IMPACTS...At 3.5 feet, water reaches yards near Cobb Island
and docks near Dahlgren.
* ADDITIONAL DETAILS...Tides one and a half to two feet above
normal. The next high tide at Goose Bay is at 4:20 PM and 4:34
AM. The next high tide at Indian Head is at 7:40 AM and 8:14 PM.
The next high tide at Dahlgren is at 3:12 PM and 3:36 AM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
Upper Machodoc Creek at Dahlgren
MLLW Categories - Minor 3.5 ft, Moderate 5.0 ft, Major 7.0 ft
MHHW Categories - Minor 1.6 ft, Moderate 3.1 ft, Major 5.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
22/03 PM 3.9 2.0 1.9 0.5 Minor
23/03 AM 4.0 2.1 1.9 0.5 Minor
23/04 PM 3.8 1.9 1.7 1.0 Minor
24/04 AM 3.8 1.9 1.6 0.5 Minor
24/05 PM 3.6 1.7 1.5 1.0 Minor
&&
$$
VAZ054-221845-
/O.CON.KLWX.CF.Y.0033.000000T0000Z-250824T1500Z/
Arlington/Falls Church/Alexandria-
634 AM EDT Fri Aug 22 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT
SUNDAY...
* WHAT...Up to one half foot of inundation above ground level in
low lying areas due to tidal flooding.
* WHERE...Shoreline in the City of Alexandria and Arlington
County.
* WHEN...Until 11 AM EDT Sunday, especially around the time of
high tide.
* IMPACTS...A Coastal Flood Advisory indicates that onshore winds
and tides will combine to generate flooding of low areas along
the shore..
* ADDITIONAL DETAILS...Tides one and a half to two feet above
normal. The next high tide at Alexandria is at 8:12 AM and 8:46
PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
$$
MDZ017-221845-
/O.CON.KLWX.CF.Y.0033.250822T1400Z-250823T1000Z/
St. Marys-
634 AM EDT Fri Aug 22 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 6 AM EDT SATURDAY...
* WHAT...Up to one half foot of inundation above ground level
expected in low lying areas due to tidal flooding.
* WHERE...Shoreline in St. Marys County.
* WHEN...From 10 AM this morning to 6 AM EDT Saturday,
especially around the time of high tide.
* IMPACTS...At 3.5 feet, water covers roads on Saint George
Island, is in yards, and is approaching structures. To the
east, inundation is occurring at multiple marinas off St.
Mary`s River, Smith Creek, and Jutland Creek.
* ADDITIONAL DETAILS...Tides two to two and a half feet above
normal. The next high tide at Point Lookout is at 1:22 PM and
2:05 AM. The next high tide at Piney Point is at 2:34 PM and
2:48 AM. The next high tide at Coltons Point is at 3:10 PM and
3:24 AM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
St Marys River at Straits Point
MLLW Categories - Minor 3.0 ft, Moderate 3.5 ft, Major 5.0 ft
MHHW Categories - Minor 1.4 ft, Moderate 1.9 ft, Major 3.4 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
22/03 PM 3.7 2.1 2.1 0.5 Minor
23/03 AM 3.8 2.2 2.1 0.5 Minor
23/03 PM 3.3 1.7 1.7 1.0 None
24/03 AM 3.2 1.6 1.6 1.0 None
24/04 PM 3.0 1.4 1.4 1.0 None
25/04 AM 3.0 1.4 1.4 1.0 None
&&
$$
BELAK