From Surf Wiki (app.surf) — the open knowledge base

Coastal flood advisory

Flood advisory in the United States

Flood advisory in the United States

A coastal flood advisory is issued by the National Weather Service of the United States when coastal flooding along the coast of the Atlantic Ocean, Pacific Ocean, Arctic Ocean, or the Gulf of Mexico is occurring or imminent, but does not pose a serious threat to lives or property, but rather will simply pose a nuisance to people in the affected area. The flooding must be due to water being forced from the nearby body of water onto land, and not from rainfall. Nor'easters, hurricanes, tropical storms, and thunderstorms can all lead to the issuance of a coastal flood advisory.

Example

The following is an example of a coastal flood advisory issued by the National Weather Service office in Taunton, Massachusetts.

062 WHUS41 KBOX 030838 CFWBOX

Coastal Hazard Message National Weather Service Boston/Norton MA 338 AM EST Mon Jan 3 2022

MAZ007-015-016-019-022024-031900- /O.CAN.KBOX.CF.S.0001.220103T1400Z-220103T1900Z/ /O.NEW.KBOX.CF.Y.0001.220103T1400Z-220103T1900Z/ Eastern Essex MA-Suffolk MA-Eastern Norfolk MA- Eastern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA- 338 AM EST Mon Jan 3 2022

...COASTAL FLOOD ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 2 PM EST THIS AFTERNOON...

WHAT...One to two feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (3.3 to 13.0 feet Mean Lower Low Water).
WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA, Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA Counties.
WHEN...From 9 AM this morning to 2 PM EST this afternoon.
IMPACTS...Coastal flooding is expected along the North Shore from Marblehead northward along the coast to Newburyport. The combination of high tides and a modest storm surge will result in flooding of some immediate coastal roads and some road closures are anticipated. Minor coastal flooding begins on Easy Street in Nantucket. Minor coastal flooding occurs along Morrissey Boulevard in Boston.

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.

Merrimack River near Newburyport MA MLLW Categories - Minor 11.0 ft, Moderate 12.0 ft, Major 13.5 ft MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 4.0 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/11 AM 11.0/11.5 1.5/ 2.0 1.0/ 1.5 1 Minor 04/12 AM 9.4/ 9.9 -0.2/ 0.3 1.2/ 1.7 1 None 04/12 PM 10.7/11.2 1.2/ 1.7 0.8/ 1.3 1 Minor 05/01 AM 8.5/ 9.0 -1.1/-0.6 0.2/ 0.7 3 None

Gloucester Harbor MLLW Categories - Minor 11.5 ft, Moderate 13.0 ft, Major 15.0 ft MHHW Categories - Minor 2.0 ft, Moderate 3.5 ft, Major 5.5 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/11 AM 12.3/12.8 2.7/ 3.2 1.0/ 1.5 3-5 Minor 04/12 AM 10.7/11.2 1.2/ 1.7 1.2/ 1.7 6-7 None 04/12 PM 11.9/12.4 2.3/ 2.8 0.7/ 1.1 4 Minor 05/01 AM 9.8/10.3 0.2/ 0.8 0.2/ 0.7 3-4 None

Revere MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft MHHW Categories - Minor 2.6 ft, Moderate 4.6 ft, Major 6.1 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/11 AM 13.0/13.5 3.1/ 3.6 1.2/ 1.7 1 Minor 04/12 AM 11.3/11.8 1.4/ 1.9 1.3/ 1.8 1 None 04/12 PM 12.7/13.2 2.7/ 3.2 0.9/ 1.4 1 Minor 05/01 AM 10.3/10.8 0.4/ 0.9 0.2/ 0.8 2 None

Boston Harbor MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft MHHW Categories - Minor 2.4 ft, Moderate 4.4 ft, Major 5.9 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/11 AM 13.0/13.5 2.8/ 3.4 1.2/ 1.7 2-4 Minor 04/12 AM 11.2/11.7 1.1/ 1.6 1.2/ 1.7 4 None 04/12 PM 12.6/13.1 2.5/ 3.0 0.9/ 1.4 3 Minor 05/01 AM 10.4/10.9 0.2/ 0.8 0.4/ 0.9 2 None

Scituate MA MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft MHHW Categories - Minor 1.8 ft, Moderate 3.8 ft, Major 5.8 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/11 AM 12.5/13.0 2.7/ 3.2 1.1/ 1.6 3-5 Minor 04/12 AM 10.8/11.3 1.1/ 1.6 1.3/ 1.8 6-7 None 04/12 PM 12.1/12.6 2.3/ 2.8 0.8/ 1.3 4 Minor 05/01 AM 9.9/10.4 0.2/ 0.7 0.2/ 0.8 3 None

Chatham - South side MLLW Categories - Minor 9.0 ft, Moderate 10.5 ft, Major 11.5 ft MHHW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/12 PM 6.2/ 6.7 1.7/ 2.2 1.1/ 1.6 4 None 04/01 AM 4.9/ 5.4 0.4/ 0.9 1.2/ 1.7 6-7 None 04/01 PM 5.9/ 6.4 1.4/ 1.9 0.9/ 1.4 3-4 None

Wings Neck MLLW Categories - Minor 6.5 ft, Moderate 9.0 ft, Major 11.5 ft MHHW Categories - Minor 2.1 ft, Moderate 4.6 ft, Major 7.1 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/08 AM 5.9/ 6.4 1.5/ 2.0 0.8/ 1.3 1-2 None 03/08 PM 4.7/ 5.2 0.4/ 0.9 0.6/ 1.1 4-5 None 04/09 AM 5.7/ 6.2 1.4/ 1.9 0.8/ 1.3 2-3 None 04/09 PM 4.9/ 5.4 0.5/ 1.0 0.6/ 1.1 1 None

Provincetown Harbor MLLW Categories - Minor 13.0 ft, Moderate 14.0 ft, Major 15.0 ft MHHW Categories - Minor 2.9 ft, Moderate 3.9 ft, Major 4.9 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/11 AM 12.6/13.1 2.5/ 3.0 1.0/ 1.5 4 Minor 04/12 AM 11.0/11.5 0.9/ 1.4 1.2/ 1.7 7 None 04/12 PM 12.1/12.6 2.0/ 2.5 0.6/ 1.1 4-5 None 05/01 AM 10.1/10.6 0.0/ 0.5 0.2/ 0.7 3 None

Buzzards Bay at Woods Hole MLLW Categories - Minor 5.5 ft, Moderate 7.0 ft, Major 8.5 ft MHHW Categories - Minor 3.5 ft, Moderate 5.0 ft, Major 6.5 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/08 AM 3.9/ 4.4 1.9/ 2.3 0.8/ 1.3 2 None 03/09 PM 3.5/ 4.0 1.5/ 2.0 1.0/ 1.5 5 None 04/09 AM 3.7/ 4.2 1.8/ 2.2 0.8/ 1.3 2-3 None 04/10 PM 3.0/ 3.5 1.0/ 1.5 0.6/ 1.1 1 None

Dennis - Sesuit Harbor MLLW Categories - Minor 13.0 ft, Moderate 14.5 ft, Major 16.0 ft MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.5 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/11 AM 13.4/13.9 2.8/ 3.4 1.2/ 1.7 3 Minor 04/12 AM 11.9/12.4 1.4/ 1.9 1.5/ 2.0 6 None 04/12 PM 12.8/13.3 2.2/ 2.7 0.7/ 1.1 3-4 Minor 05/01 AM 10.7/11.2 0.2/ 0.7 0.2/ 0.8 1-2 None

Chatham MA - East Coast MLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ft MHHW Categories - Minor 1.3 ft, Moderate 3.8 ft, Major 5.3 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/12 PM 7.1/ 7.6 -0.7/-0.2 1.2/ 1.7 5 None 04/01 AM 6.0/ 6.5 -1.8/-1.3 1.4/ 1.9 7-8 None 04/01 PM 6.7/ 7.2 -1.1/-0.6 0.8/ 1.3 5-6 None

Sandwich Harbor MLLW Categories - Minor 12.0 ft, Moderate 14.0 ft, Major 15.0 ft MHHW Categories - Minor 1.7 ft, Moderate 3.7 ft, Major 4.7 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/11 AM 11.9/12.4 1.6/ 2.0 1.2/ 1.7 3-4 Minor 04/12 AM 10.4/10.9 0.1/ 0.6 1.4/ 1.9 6-7 None 04/12 PM 11.3/11.8 1.0/ 1.5 0.7/ 1.1 3-4 None 05/01 AM 9.3/ 9.8 -1.1/-0.6 0.2/ 0.8 2 None

Vineyard Haven MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.5 ft MHHW Categories - Minor 3.0 ft, Moderate 4.5 ft, Major 6.5 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/12 PM 3.1/ 3.6 1.1/ 1.6 1.1/ 1.6 2-3 None 04/12 AM 3.2/ 3.7 1.2/ 1.7 1.5/ 2.0 4-5 None 04/12 PM 2.7/ 3.2 0.8/ 1.3 0.9/ 1.4 2 None 05/01 AM 2.1/ 2.6 0.1/ 0.6 0.4/ 0.9 1 None

Nantucket Harbor MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.0 ft MHHW Categories - Minor 1.4 ft, Moderate 2.9 ft, Major 4.4 ft

Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact

03/12 PM 5.2/ 5.7 1.6/ 2.0 1.2/ 1.7 3-4 Minor 04/01 AM 4.5/ 5.0 0.9/ 1.4 1.6/ 2.0 5-7 None 04/01 PM 4.7/ 5.2 1.2/ 1.7 0.8/ 1.3 3-4 Minor

&&

$$

Nocera

References

References

Baltimore/Washington National Weather Service Forecast Office. "Coastal Flood Advisory". erh.noaa.gov.
"IEM::Valid Time Event Code". Iowa Environmental Mesonet.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

weather-warnings-and-advisories

Want to explore this topic further?

Ask Mako anything about Coastal flood advisory — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.