Coastal Flood Warnings/Watches/Statements
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
631
WHUS41 KLWX 191751
CFWLWX
URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Baltimore MD/Washington DC
151 PM EDT Tue Aug 19 2025
MDZ014-200300-
/O.NEW.KLWX.CF.W.0003.250820T0300Z-250820T1200Z/
Anne Arundel-
151 PM EDT Tue Aug 19 2025
...COASTAL FLOOD WARNING IN EFFECT FROM 11 PM THIS EVENING TO
8 AM EDT WEDNESDAY...
* WHAT...One to two feet of inundation above ground level
expected in low lying areas due to tidal flooding.
* WHERE...Shoreline in Anne Arundel County.
* WHEN...From 11 PM this evening to 8 AM EDT Wednesday,
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
2:13 PM and 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
-------- --------- --------- --------- ------- --------
19/03 PM 2.5 1.1 1.4 1.0 None
20/03 AM 3.6 2.2 1.8 1.0 Moderate
20/03 PM 2.7 1.3 1.5 1.0 Minor
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
&&
$$
MDZ018-200300-
/O.NEW.KLWX.CF.Y.0031.250820T0300Z-250820T1800Z/
Calvert-
151 PM EDT Tue Aug 19 2025
...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
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...From 11 PM this evening to 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
-------- --------- --------- --------- ------- --------
19/01 PM 2.4 1.0 1.1 1.0 None
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
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
21/01 AM 2.9 1.4 1.2 1.0 None
21/01 PM 2.3 0.8 0.7 1.0 None
22/02 AM 2.5 1.0 0.8 1.0 None
&&
$$
MDZ016-VAZ057-200300-
/O.NEW.KLWX.CF.Y.0031.250820T0300Z-250820T0800Z/
Charles-King George-
151 PM EDT Tue Aug 19 2025
...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
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...From 11 PM this evening to 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 and a half to two feet above
normal. The next high tide at Indian Head is at 5:33 PM and 5:50
AM. The next high tide at Dahlgren is at 1:03 AM and 1:27 PM.
The next high tide at Goose Bay is at 1:56 AM and 2:38 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.
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
-------- --------- --------- --------- ------- --------
19/01 PM 3.3 1.4 1.5 0.5 None
20/01 AM 3.7 1.8 1.6 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
&&
$$
MDZ011-200300-
/O.NEW.KLWX.CF.Y.0031.250820T0700Z-250820T1300Z/
Southern Baltimore-
151 PM EDT Tue Aug 19 2025
...COASTAL FLOOD ADVISORY 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 and a half to two feet above
normal. The next high tide at Fort McHenry Baltimore is at 3:53
PM and 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
-------- --------- --------- --------- ------- --------
19/04 PM 2.4 0.7 1.1 0.5 None
20/05 AM 3.7 2.0 1.6 0.5 Minor
20/05 PM 2.8 1.1 1.5 0.5 None
21/05 AM 3.0 1.3 1.0 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
-------- --------- --------- --------- ------- --------
19/05 PM 1.8 0.1 0.6 1.0 None
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
&&
$$