927
WHUS41 KLWX 210357
CFWLWX

Coastal Hazard Message
National Weather Service Baltimore MD/Washington DC
1157 PM EDT Wed Aug 20 2025

MDZ016-VAZ057-210700-
/O.EXB.KLWX.CF.Y.0032.250821T0500Z-250821T0700Z/
Charles-King George-
1157 PM EDT Wed Aug 20 2025

...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 3 AM EDT THURSDAY...

* 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 3 AM EDT Thursday, 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 Goose Bay is at 2:54 AM. The next
  high tide at Dahlgren is at 2:00 AM. The next high tide at
  Indian Head is at 6:48 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
 --------  ---------  ---------  ---------  -------  --------
 21/02 AM     3.6        1.7        1.5       0.5     Minor
 21/02 PM     3.2        1.3        1.2       0.5      None
 22/03 AM     3.5        1.6        1.3       0.5     Minor
 22/03 PM     4.0        2.1        2.0       0.5     Minor
 23/04 AM     4.3        2.4        2.1       0.5     Minor
 23/03 PM     3.9        2.0        1.9       1.0     Minor

&&

$$

MDZ014-211200-
/O.CON.KLWX.CF.Y.0032.250821T0500Z-250821T1200Z/
Anne Arundel-
1157 PM EDT Wed Aug 20 2025

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT
THURSDAY...

* WHAT...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...Until 8 AM EDT Thursday, especially around the time of
  high tide.

* IMPACTS...At 3.0 feet, Compromise Street begins to flood in
  Annapolis. Flooding of much of the City Dock parking lot is
  occurring.

* ADDITIONAL DETAILS...Tides one to one and a half feet above
  normal. The next high tide at Annapolis U.S. Naval Academy is at
  4:46 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.

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
 --------  ---------  ---------  ---------  -------  --------
 21/04 AM     3.0        1.6        1.2       1.0     Minor
 21/03 PM     2.0        0.6        0.8       1.0      None
 22/05 AM     3.0        1.6        1.3       0.5     Minor
 22/05 PM     3.2        1.8        1.8       0.5     Minor
 23/06 AM     3.7        2.3        2.0       0.5    Moderate
 23/05 PM     3.1        1.7        1.7       1.0     Minor

&&

$$