276
WHUS41 KLWX 120031
CFWLWX
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
831 PM EDT SUN OCT 11 2026
MDZ508-120500-
/O.EXB.KLWX.CF.Y.0051.000000T0000Z-261012T0500Z/
SOUTHEAST HARFORD-
831 PM EDT SUN OCT 11 2026
..COASTAL FLOOD ADVISORY IN EFFECT UNTIL 1 AM EDT MONDAY
* WHAT...UP TO ONE HALF FOOT OF INUNDATION ABOVE GROUND LEVEL IN
LOW LYING AREAS DUE TO TIDAL FLOODING.
* WHERE...SHORELINE IN SOUTHEAST HARFORD COUNTY.
* WHEN...UNTIL 1 AM EDT MONDAY, ESPECIALLY AROUND THE TIME OF
HIGH TIDE.
* IMPACTS...AT 4.0 FEET, WATER BEGINS TO GO OVER THE BULKHEAD AT
THE HAVRE DE GRACE YACHT BASIN IN MULTIPLE LOCATIONS.
* ADDITIONAL DETAILS...TIDES ONE AND A HALF TO TWO FEET ABOVE
NORMAL. THE NEXT HIGH TIDE AT HAVRE DE GRACE IS AT 11:03 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
-------- --------- --------- --------- ------- --------
11/11 PM 4.1 1.7 1.5 1.0 MINOR
12/12 PM 2.5 0.1 0.6 1.0 NONE
13/01 AM 2.9 0.5 0.4 0.5 NONE
13/12 PM 2.9 0.5 1.1 1.0 NONE
14/12 AM 3.8 1.4 1.2 1.0 NONE
14/01 PM 2.7 0.3 0.9 1.0 NONE
MDZ011-120200-
/O.CON.KLWX.CF.Y.0051.000000T0000Z-261012T0200Z/
SOUTHERN BALTIMORE-
831 PM EDT SUN OCT 11 2026
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
* WHAT...UP TO ONE HALF FOOT OF INUNDATION ABOVE GROUND LEVEL IN
LOW LYING AREAS DUE TO TIDAL FLOODING.
* WHERE...SHORELINE IN SOUTHERN BALTIMORE COUNTY AND THE CITY OF
BALTIMORE.
* WHEN...UNTIL 10 PM EDT THIS EVENING, 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 BOWLEY BAR IS 8:51 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.
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
-------- --------- --------- --------- ------- --------
11/08 PM 3.5 1.8 1.5 0.5 MINOR
12/08 AM 2.0 0.3 0.6 0.5 NONE
12/09 PM 1.9 0.2 -0.1 0.5 NONE
13/09 AM 2.2 0.5 0.8 0.5 NONE
13/10 PM 2.8 1.1 0.9 0.5 NONE
14/09 AM 2.1 0.4 0.8 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
-------- --------- --------- --------- ------- --------
11/08 PM 3.3 1.6 1.3 1.0 MINOR
12/08 AM 2.1 0.4 0.7 1.0 NONE
12/09 PM 2.0 0.3 0.0 0.5 NONE
13/09 AM 2.2 0.5 0.9 0.5 NONE
13/09 PM 2.9 1.2 1.0 1.0 NONE
14/10 AM 2.1 0.4 0.8 1.0 NONE
VAZ054-120300-
/O.CON.KLWX.CF.Y.0051.000000T0000Z-261012T0300Z/
ARLINGTON/FALLS CHURCH/ALEXANDRIA-
831 PM EDT SUN OCT 11 2026
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...
* 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 PM EDT THIS EVENING, ESPECIALLY AROUND THE
TIME OF HIGH TIDE.
* IMPACTS...WATER IS EXPECTED TO APPROACH THE CURB NEAR THE
INTERSECTION OF KING STREET AND STRAND STREET IN ALEXANDRIA..
* ADDITIONAL DETAILS...TIDES ONE AND A HALF TO TWO FEET ABOVE
NORMAL. THE NEXT HIGH TIDE AT ALEXANDRIA IS AT 9:44 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.
MDZ014-120300-
/O.CON.KLWX.CF.Y.0051.000000T0000Z-261012T0300Z/
ANNE ARUNDEL-
831 PM EDT SUN OCT 11 2026
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...
* WHAT...UP TO ONE HALF FOOT OF INUNDATION ABOVE GROUND LEVEL IN
LOW LYING AREAS DUE TO TIDAL FLOODING.
* WHERE...SHORELINE IN ANNE ARUNDEL COUNTY.
* WHEN...ONGOING THROUGH 11 PM EDT THIS EVENING.
* 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.
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
-------- --------- --------- --------- ------- --------
12/06 AM 2.4 1.0 1.1 0.5 NONE
12/07 PM 1.7 0.3 0.0 0.5 NONE
13/07 AM 2.1 0.7 0.8 0.5 NONE
13/08 PM 2.6 1.2 0.9 1.0 MINOR
14/07 AM 2.0 0.6 0.8 0.5 NONE
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