Coastal Flood Warnings/Watches/Statements
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
008
WHUS41 KLWX 200300
CFWLWX
Coastal Hazard Message
National Weather Service Baltimore MD/Washington DC
1100 PM EDT Tue Aug 19 2025
MDZ014-201100-
/O.CON.KLWX.CF.W.0003.000000T0000Z-250820T1200Z/
Anne Arundel-
1100 PM EDT Tue Aug 19 2025
...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 8 AM EDT
WEDNESDAY...
* WHAT...Up to one foot of inundation above ground level
expected in low lying areas due to tidal flooding.
* WHERE...Shoreline in Anne Arundel County.
* WHEN...Until 8 AM EDT Wednesday, especially around the time of
high tide.
* IMPACTS...At 3.2 feet, water begins to approach businesses on
Dock Street in Annapolis. The City Dock parking lot is
flooded. Compromise Street is flooded.
* ADDITIONAL DETAILS...Tides one and a half to two feet above
normal. The next high tide at Annapolis U.S. Naval Academy is at
3:55 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
-------- --------- --------- --------- ------- --------
20/03 AM 3.4 2.0 1.6 1.0 Moderate
20/02 PM 2.5 1.1 1.4 1.0 None
21/04 AM 2.9 1.5 1.1 1.0 Minor
21/04 PM 1.8 0.4 0.5 1.0 None
22/06 AM 2.6 1.2 0.9 0.5 Minor
22/05 PM 2.8 1.4 1.4 0.5 Minor
&&
$$
MDZ018-201100-
/O.CON.KLWX.CF.Y.0031.000000T0000Z-250820T1800Z/
Calvert-
1100 PM EDT Tue Aug 19 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT
WEDNESDAY...
* WHAT...Up to one half foot of inundation above ground level
expected in low lying areas due to tidal flooding.
* WHERE...Shoreline in Calvert County.
* WHEN...Until 2 PM EDT Wednesday, especially around the time of
high tide.
* IMPACTS...At 3.0 feet, water is expected to reach backyards
near 9th Street in North Beach, and could approach 9th Street.
At 3.0 feet, parking lots near Charles Street in Solomons
begin to flood, with several inches of water covering low-
lying portions of Charles Street and Williams Street.
* ADDITIONAL DETAILS...Tides one and a half to two feet above
normal. The next high tide at Solomons Island is at 12:30 AM and
12:23 PM. The next high tide at Chesapeake Beach is at 2:17 AM
and 2:12 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 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
-------- --------- --------- --------- ------- --------
20/03 AM 3.0 1.6 1.1 1.0 Minor
20/02 PM 2.4 1.0 1.1 0.5 None
21/04 AM 3.0 1.6 1.1 1.0 Minor
21/04 PM 2.1 0.7 0.7 0.5 None
22/05 AM 2.8 1.4 1.0 0.5 None
22/05 PM 3.1 1.7 1.6 0.5 Minor
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
-------- --------- --------- --------- ------- --------
20/12 AM 3.1 1.6 1.4 1.0 Minor
20/12 PM 3.1 1.6 1.6 1.0 Minor
21/12 AM 2.8 1.3 1.2 1.0 None
21/12 PM 2.3 0.8 0.8 1.0 None
22/02 AM 2.5 1.0 0.8 1.0 None
22/02 PM 3.1 1.6 1.5 1.0 Minor
&&
$$
MDZ016-VAZ057-200800-
/O.CON.KLWX.CF.Y.0031.000000T0000Z-250820T0800Z/
Charles-King George-
1100 PM EDT Tue Aug 19 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT
WEDNESDAY...
* WHAT...Up to one half foot of inundation above ground level
expected in low lying areas due to tidal flooding.
* WHERE...Shoreline in Charles and King George Counties.
* WHEN...Until 4 AM EDT Wednesday, 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 to one and a half feet above
normal. The next high tide at Indian Head is at 5:50 AM. The
next high tide at Goose Bay is at 1:56 AM. The next high tide at
Dahlgren is at 1:03 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
-------- --------- --------- --------- ------- --------
20/01 AM 3.6 1.7 1.5 0.5 Minor
20/01 PM 3.4 1.5 1.5 0.5 None
21/02 AM 3.2 1.3 1.1 0.5 None
21/02 PM 2.9 1.0 0.9 0.5 None
22/03 AM 3.3 1.4 1.1 0.5 None
22/03 PM 3.7 1.8 1.7 0.5 Minor
&&
$$
MDZ011-201100-
/O.CON.KLWX.CF.Y.0031.250820T0700Z-250820T1300Z/
Southern Baltimore-
1100 PM EDT Tue Aug 19 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM EDT
WEDNESDAY...
* WHAT...Up to one half foot of inundation above ground level
expected in low lying areas due to tidal flooding.
* WHERE...Shoreline in Southern Baltimore County and the city of
Baltimore.
* WHEN...From 3 AM to 9 AM EDT Wednesday, 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.
* ADDITIONAL DETAILS...Tides one to one and a half feet above
normal. The next high tide at Fort McHenry Baltimore is at 5:04
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
-------- --------- --------- --------- ------- --------
20/05 AM 3.6 1.9 1.5 0.5 Minor
20/04 PM 2.6 0.9 1.3 0.5 None
21/05 AM 2.9 1.2 0.9 0.5 None
21/05 PM 1.7 0.0 0.3 0.5 None
22/07 AM 2.5 0.8 0.5 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
-------- --------- --------- --------- ------- --------
20/05 AM 3.0 1.3 0.9 1.0 Minor
20/05 PM 2.2 0.5 0.9 1.0 None
21/06 AM 2.9 1.2 0.8 1.0 None
21/06 PM 1.5 -0.2 0.1 1.0 None
22/08 AM 2.7 1.0 0.7 1.0 None
&&
$$