258  
WHUS41 KLWX 191521  
CFWLWX  
 
URGENT - IMMEDIATE BROADCAST REQUESTED  
COASTAL HAZARD MESSAGE  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1121 AM EDT FRI APR 19 2024  
 
MDZ014-192330-  
/O.UPG.KLWX.CF.Y.0047.000000T0000Z-240420T1200Z/  
/O.NEW.KLWX.CF.W.0012.240419T1521Z-240420T1200Z/  
ANNE ARUNDEL-  
1121 AM EDT FRI APR 19 2024  
 
...COASTAL FLOOD WARNING IN EFFECT UNTIL 8 AM EDT SATURDAY...  
 
* WHAT...UP TO ONE FOOT OF INUNDATION ABOVE GROUND LEVEL IN LOW  
LYING AREAS DUE TO TIDAL FLOODING.  
 
* WHERE...SHORELINE IN ANNE ARUNDEL COUNTY.  
 
* WHEN...UNTIL 8 AM EDT SATURDAY, 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 TWO TO TWO AND A HALF FEET ABOVE  
NORMAL. THE NEXT HIGH TIDE AT ANNAPOLIS U.S. NAVAL ACADEMY IS AT  
3:27 PM AND 3:49 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 6.0 FT  
MHHW CATEGORIES - MINOR 1.2 FT, MODERATE 1.9 FT, MAJOR 4.6 FT  
 
TOTAL TOTAL DEPARTURE  
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD  
FT MLLW FT MHHW FT FT IMPACT  
-------- --------- --------- --------- ------- --------  
19/04 PM 3.3 1.9 2.2 1.0 MODERATE  
20/03 AM 3.3 1.9 2.1 1.0 MODERATE  
20/03 PM 2.1 0.7 1.1 0.5 NONE  
21/04 AM 2.1 0.7 0.8 0.5 NONE  
21/04 PM 1.9 0.5 0.9 0.5 NONE  
22/05 AM 2.4 1.0 1.0 0.5 NONE  
 

 
 

 
 
MDZ017-192330-  
/O.UPG.KLWX.CF.Y.0047.000000T0000Z-240420T0800Z/  
/O.NEW.KLWX.CF.W.0012.240419T1521Z-240420T0800Z/  
ST. MARYS-  
1121 AM EDT FRI APR 19 2024  
   
..COASTAL FLOOD WARNING IN EFFECT UNTIL 4 AM EDT SATURDAY
 
 
* WHAT...UP TO ONE FOOT OF INUNDATION ABOVE GROUND LEVEL IN LOW  
LYING AREAS DUE TO TIDAL FLOODING.  
 
* WHERE...SHORELINE IN ST. MARYS COUNTY.  
 
* WHEN...UNTIL 4 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 PINEY POINT IS AT 12:23 PM AND  
12:51 AM. THE NEXT HIGH TIDE AT COLTONS POINT IS AT 12:59 PM AND  
1:27 AM. THE NEXT HIGH TIDE AT POINT LOOKOUT IS AT 11:37 AM AND  
11:43 PM.  
 
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.  
 
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  
-------- --------- --------- --------- ------- --------  
19/12 PM 3.7 2.1 2.3 1.0 MODERATE  
20/12 AM 3.5 1.9 2.0 1.0 MODERATE  
20/12 PM 2.8 1.2 1.5 1.0 NONE  
21/01 AM 2.6 1.0 1.1 1.0 NONE  
21/01 PM 2.4 0.8 1.0 0.5 NONE  
22/02 AM 2.8 1.2 1.2 1.0 NONE  
 

 
 

 
 
MDZ011-192330-  
/O.EXB.KLWX.CF.Y.0047.240419T1800Z-240420T0100Z/  
SOUTHERN BALTIMORE-  
1121 AM EDT FRI APR 19 2024  
   
..COASTAL FLOOD ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING
 
 
* 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...UNTIL 9 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 TWO TO TWO AND A HALF FEET ABOVE  
NORMAL. THE NEXT HIGH TIDE AT FORT MCHENRY BALTIMORE IS AT 5:05  
PM AND 5:11 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 3.0 FT, MODERATE 5.0 FT, MAJOR 6.0 FT  
MHHW CATEGORIES - MINOR 1.3 FT, MODERATE 3.3 FT, MAJOR 4.3 FT  
 
TOTAL TOTAL DEPARTURE  
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD  
FT MLLW FT MHHW FT FT IMPACT  
-------- --------- --------- --------- ------- --------  
19/05 PM 3.6 1.9 2.3 0.5 MINOR  
20/05 AM 3.2 1.5 1.8 0.5 NONE  
20/05 PM 2.1 0.4 0.9 1.0 NONE  
21/06 AM 2.3 0.6 0.8 0.5 NONE  
21/06 PM 1.9 0.2 0.7 1.0 NONE  
22/07 AM 2.5 0.8 0.9 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 3.4 1.7 2.2 1.0 MINOR  
20/05 AM 2.9 1.2 1.6 0.5 NONE  
20/05 PM 2.1 0.4 1.0 1.0 NONE  
21/08 AM 2.2 0.5 0.8 1.0 NONE  
21/06 PM 1.9 0.2 0.8 1.0 NONE  
22/06 AM 2.3 0.6 0.9 1.0 NONE  
 

 
 

 
 
MDZ018-192330-  
/O.EXT.KLWX.CF.Y.0047.000000T0000Z-240420T0800Z/  
CALVERT-  
1121 AM EDT FRI APR 19 2024  
   
..COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 4 AM EDT SATURDAY
 
 
* WHAT...UP TO ONE HALF FOOT OF INUNDATION ABOVE GROUND LEVEL IN  
LOW LYING AREAS DUE TO TIDAL FLOODING.  
 
* WHERE...SHORELINE IN CALVERT COUNTY.  
 
* WHEN...UNTIL 4 AM EDT SATURDAY, 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 CHESAPEAKE BEACH IS AT 2:18 PM AND  
2:24 AM. THE NEXT HIGH TIDE AT SOLOMONS ISLAND IS AT 12:16 PM  
AND 12:46 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.  
 
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  
-------- --------- --------- --------- ------- --------  
19/02 PM 3.1 1.7 2.0 1.0 MINOR  
20/01 AM 2.8 1.4 1.7 1.0 NONE  
20/02 PM 2.2 0.8 1.2 0.5 NONE  
21/03 AM 2.2 0.8 0.9 0.5 NONE  
21/03 PM 2.0 0.6 0.9 0.5 NONE  
22/04 AM 2.4 1.0 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  
-------- --------- --------- --------- ------- --------  
19/12 PM 3.3 1.8 2.0 1.0 MINOR  
20/12 AM 3.1 1.6 1.7 1.0 MINOR  
20/12 PM 2.5 1.0 1.3 1.0 NONE  
21/01 AM 2.5 1.0 1.0 1.0 NONE  
21/02 PM 2.2 0.7 0.9 1.0 NONE  
22/02 AM 2.5 1.0 1.0 1.0 NONE  
 

 
 

 
 
MDZ016-VAZ057-192330-  
/O.EXT.KLWX.CF.Y.0047.000000T0000Z-240420T0700Z/  
CHARLES-KING GEORGE-  
1121 AM EDT FRI APR 19 2024  
   
..COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 3 AM EDT SATURDAY
 
 
* WHAT...UP TO ONE HALF FOOT OF INUNDATION ABOVE GROUND LEVEL IN  
LOW LYING AREAS DUE TO TIDAL FLOODING.  
 
* WHERE...SHORELINE IN CHARLES AND KING GEORGE COUNTIES.  
 
* WHEN...UNTIL 3 AM EDT SATURDAY, 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 TWO TO TWO AND A HALF FEET ABOVE  
NORMAL. THE NEXT HIGH TIDE AT DAHLGREN IS AT 1:02 PM AND 1:30  
AM. THE NEXT HIGH TIDE AT INDIAN HEAD IS AT 6:03 PM AND 6:31 AM.  
THE NEXT HIGH TIDE AT GOOSE BAY IS AT 2:09 PM AND 2:37 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  
-------- --------- --------- --------- ------- --------  
19/01 PM 3.8 1.9 2.2 1.0 MINOR  
20/12 AM 3.6 1.7 2.1 1.0 MINOR  
20/01 PM 2.8 0.9 1.2 0.5 NONE  
21/02 AM 2.9 1.0 1.1 0.5 NONE  
21/02 PM 2.6 0.7 0.9 0.5 NONE  
22/02 AM 2.9 1.0 1.1 0.5 NONE  
 

 
 

 
 
DCZ001-VAZ054-192330-  
/O.CON.KLWX.CF.Y.0047.240419T1900Z-240420T0100Z/  
DISTRICT OF COLUMBIA-ARLINGTON/FALLS CHURCH/ALEXANDRIA-  
1121 AM EDT FRI APR 19 2024  
 
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 3 PM THIS  
AFTERNOON TO 9 PM EDT THIS EVENING...  
 
* WHAT...ONE TO TWO FEET OF INUNDATION ABOVE GROUND LEVEL  
EXPECTED IN LOW LYING AREAS DUE TO TIDAL FLOODING.  
 
* WHERE...SHORELINE IN THE DISTRICT OF COLUMBIA, ARLINGTON  
COUNTY, AND THE CITY OF ALEXANDRIA.  
 
* WHEN...FROM 3 PM THIS AFTERNOON TO 9 PM EDT THIS EVENING,  
ESPECIALLY AROUND THE TIME OF HIGH TIDE.  
 
* IMPACTS...SHORELINE INUNDATION IS EXPECTED ALONG PORTIONS OF THE  
SEAWALL ADJACENT TO OHIO DRIVE AND THE HAINS POINT LOOP ROAD AND  
NEAR THE TIDAL BASIN. WATER IS EXPECTED TO APPROACH THE CURB  
NEAR THE INTERSECTION OF KING STREET AND STRAND STREET IN  
ALEXANDRIA.  
 
* ADDITIONAL DETAILS...TIDES TWO TO TWO AND A HALF FEET ABOVE  
NORMAL. THE NEXT HIGH TIDE AT WASHINGTON CHANNEL IS AT 6:17 PM  
AND 6:45 AM. THE NEXT HIGH TIDE AT ALEXANDRIA IS AT 6:35 PM AND  
7:03 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.  
 

 
 

 
 
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