Coastal Flood Watch (9/21/24, 9/22/24)

 
Note: The Coastal Flood Watch has been upgraded for the DC region. The most recent watch issuances before the upgrade are below.
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A Coastal Flood Watch remains in effect from 6 pm Saturday, September 21 to 10 pm Sunday, September 22, 2024 including the following Washington, DC region jurisdictions.

MARYLAND: Anne Arundel.

Excerpted from the National Weather Service:

…COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT SATURDAY…
…COASTAL FLOOD WATCH REMAINS IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY EVENING…

* WHAT…For the Coastal Flood Advisory, up to one half foot of inundation above ground level in low lying areas due to tidal flooding. For the Coastal Flood Watch, up to one foot of inundation above ground level possible in low lying areas due to tidal flooding.

* WHERE…Shoreline in Anne Arundel County.

* WHEN…For the Coastal Flood Advisory, until 6 PM EDT Saturday, especially around the time of high tide. For the Coastal Flood Watch, from Saturday evening through Sunday evening, 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 two to two and a half feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 7:52 AM and 9:06 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.

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
——– ——— ——— ——— ——- ——–
20/08 PM 3.0 1.6 1.2 1.0 Minor
21/07 AM 2.8 1.4 1.5 0.5 Minor
21/09 PM 3.5 2.1 1.7 1.0 Moderate
22/08 AM 3.3 1.9 2.1 1.0 Moderate
22/10 PM 3.7 2.3 1.9 1.0 Moderate
23/09 AM 3.0 1.6 1.9 1.0 Minor

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A Coastal Flood Watch remains in effect from 12 pm Saturday, September 21 through Sunday, September 22, 2024 to 12 am including the following Washington, DC region jurisdictions.

VIRGINIA: Westmoreland.

Excerpted from the National Weather Service:

…COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY…
…COASTAL FLOOD WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING…

* WHAT…For the Coastal Flood Advisory, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the Coastal Flood Watch, one to two feet of inundation above ground level possible in low-lying areas near shorelines and tidal waterways.

* WHERE…Westmoreland and Northumberland Counties.

* WHEN…For the Coastal Flood Advisory, until 8 AM EDT Saturday. For the Coastal Flood Watch, from Saturday afternoon through Sunday evening.

* IMPACTS…Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure may be inundated. Some shoreline erosion may occur.

* ADDITIONAL DETAILS…Additional flooding is likely through Monday.

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.

LEWISETTA VA
MLLW CATEGORIES – MINOR 3.0 FT, MODERATE 3.5 FT, MAJOR 4.0 FT
MHHW CATEGORIES – MINOR 1.5 FT, MODERATE 2.0 FT, MAJOR 2.5 FT

TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
——– ——— ——— ——— ——- ——–
20/03 PM 3.2 1.7 1.3 1 MINOR
21/04 AM 3.4 1.9 1.6 1 MINOR
21/04 PM 3.6 2.1 1.7 1 MODERATE
22/05 AM 3.6 2.1 1.9 1 MODERATE
22/06 PM 3.8 2.3 1.9 2 MODERATE
23/06 AM 3.5 2.0 1.9 1-2 MINOR

DAHLGREN/COLONIAL BEACH VA
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
——– ——— ——— ——— ——- ——–
20/05 PM 3.8 1.9 1.4 1 MINOR
21/06 AM 3.7 1.8 1.5 1 MINOR
21/06 PM 4.1 2.2 1.7 1 MODERATE
22/07 AM 3.9 2.0 1.8 1 MINOR
22/07 PM 4.2 2.3 1.9 1 MODERATE
23/07 AM 3.7 1.8 1.8 1 MINOR

WINDMILL POINT VA
MLLW CATEGORIES – MINOR 3.0 FT, MODERATE 3.5 FT, MAJOR 4.0 FT
MHHW CATEGORIES – MINOR 1.6 FT, MODERATE 2.1 FT, MAJOR 2.6 FT

TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
——– ——— ——— ——— ——- ——–
20/02 PM 3.2 1.8 1.3 1 MINOR
21/01 AM 3.1 1.7 1.5 1 MINOR
21/01 PM 3.5 2.1 1.6 1 MINOR
22/01 AM 3.2 1.8 1.8 1 MINOR
22/03 PM 3.7 2.3 1.8 1 MODERATE
23/03 AM 3.4 2.0 1.9 1 MINOR
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A Coastal Flood Watch remains in effect from 2 pm Saturday, September 21 through Sunday, September 22, 2024 to 12 am including the following Washington, DC region jurisdictions.

MARYLAND: Dorchester, Wicomico, Somerset.

Excerpted from the National Weather Service:

…COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT SATURDAY…
…COASTAL FLOOD WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING…

* WHAT…For the Coastal Flood Advisory, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the Coastal Flood Watch, one to two feet of inundation above ground level possible in low-lying areas near shorelines and tidal waterways.

* WHERE…Dorchester, Wicomico and Somerset Counties.

* WHEN…For the Coastal Flood Advisory, until 10 AM EDT Saturday. For the Coastal Flood Watch, from Saturday afternoon through Sunday evening.

* IMPACTS…Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure may be inundated. Some shoreline erosion may occur.

* ADDITIONAL DETAILS…Additional flooding is likely through Monday.

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.

CAMBRIDGE MD
MLLW CATEGORIES – MINOR 3.5 FT, MODERATE 4.0 FT, MAJOR 4.5 FT
MHHW CATEGORIES – MINOR 1.5 FT, MODERATE 2.0 FT, MAJOR 2.5 FT

TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
——– ——— ——— ——— ——- ——–
20/06 PM 3.6 1.6 1.1 1 MINOR
21/07 AM 3.7 1.7 1.5 1 MINOR
21/07 PM 4.0 2.0 1.5 1 MINOR
22/07 AM 3.8 1.8 1.7 1 MINOR
22/08 PM 4.1 2.1 1.7 2 MODERATE
23/08 AM 3.7 1.7 1.7 2 MINOR

BISHOPS HEAD MD
MLLW CATEGORIES – MINOR 3.2 FT, MODERATE 3.7 FT, MAJOR 4.2 FT
MHHW CATEGORIES – MINOR 1.1 FT, MODERATE 1.6 FT, MAJOR 2.1 FT

TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
——– ——— ——— ——— ——- ——–
20/04 PM 3.8 1.7 1.1 1 MODERATE
21/04 AM 3.9 1.8 1.5 1 MODERATE
21/04 PM 4.1 2.0 1.5 1 MODERATE
22/05 AM 3.9 1.8 1.6 1 MODERATE
22/05 PM 4.2 2.1 1.7 1-2 MODERATE
23/06 AM 3.9 1.8 1.8 1 MODERATE

CRISFIELD MD
MLLW CATEGORIES – MINOR 3.5 FT, MODERATE 4.0 FT, MAJOR 5.0 FT
MHHW CATEGORIES – MINOR 1.3 FT, MODERATE 1.8 FT, MAJOR 2.8 FT

TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
——– ——— ——— ——— ——- ——–
20/03 PM 3.9 1.7 1.5 1 MINOR
21/03 AM 3.7 1.5 1.8 1 MINOR
21/04 PM 4.2 2.0 1.8 1 MODERATE
22/04 AM 3.7 1.5 1.9 1 MINOR
22/04 PM 4.3 2.1 2.0 1 MODERATE
23/05 AM 3.7 1.5 2.1 1 MINOR