- Coastal flood advisory
-
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, 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.[1]
Contents
Example
The following is an example of a Coastal Flood Advisory issued by the National Weather Service office in Taunton, Massachusetts.[2]
753 WHUS41 KBOX 012026 CFWBOX COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE TAUNTON MA 326 PM EST FRI JAN 1 2010 ...WIDESPREAD MINOR COASTAL FLOODING LIKELY SATURDAY... MAZ007-015-016-019-022-024-020430- /O.NEW.KBOX.CF.Y.0001.100102T1600Z-100102T1900Z/ EASTERN ESSEX MA-SUFFOLK MA-EASTERN NORFOLK MA- EASTERN PLYMOUTH MA-BARNSTABLE MA-NANTUCKET MA- 326 PM EST FRI JAN 1 2010 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 AM TO 2 PM EST SATURDAY... THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A COASTAL FLOOD ADVISORY FOR THE EASTERN MASSACHUSETTS COASTLINE...WHICH IS IN EFFECT FROM 11 AM TO 2 PM EST SATURDAY. THE ADVISORY INCLUDES THE CITIES AND TOWNS OF SALISBURY...NEWBURYPORT... ALL OF CAPE ANN...COASTLINE OF BOSTON...HULL...COHASSET AND SCITUATE. LOW PRESSURE WILL RAPIDLY INTENSIFY INTO A POWERFUL STORM SATURDAY WELL EAST OF CAPE COD. DESPITE ITS DISTANCE OFFSHORE NORTH TO NORTHEAST WINDS WILL INCREASE TO 20 TO 30 MPH LATE TONIGHT AND CONTINUE INTO SATURDAY. THESE WINDS WILL YIELD A STORM SURGE OF 1.5 FT TO PERHAPS AS MUCH AS 2.0 FT. THESE SURGE VALUES WILL COMBINE WITH VERY HIGH ASTRONOMICAL TIDES TO PRODUCE STORM TIDES AT OR ABOVE FLOOD STAGE ACROSS MUCH OF THE EASTERN MASSACHUSETTS SHORELINE. IN ADDITION...MODEST SEAS JUST OFFSHORE OF 5 TO 8 FEET WILL RESULT IN BREAKING WAVES OVER SEAWALLS AND OTHER COASTAL BARRIERS. THIS WILL ALSO YIELD SOME BEACH EROSION. THIS WILL RESULT IN WIDESPREAD MINOR COASTAL FLOODING WITH POCKETS OF MODERATE COASTAL FLOODING. THIS WILL TRANSLATE TO MANY SHORE ROADS PARTIALLY FLOODED ALONG WITH A FEW ROAD CLOSURES. THE MOST VULNERABLE LOCATIONS WILL BE NORTHEAST FACING SHORELINES. WE ARE NOT EXPECTING MAJOR STRUCTURAL DAMAGE GIVEN THE LACK LARGE WAVE ACTION OFFSHORE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD ADVISORY IS ISSUED FOR MINOR COASTAL FLOODING OF THE MOST VULNERABLE SHORE ROADS AND/OR BASEMENTS DUE TO THE HEIGHT OF STORM TIDE OR WAVE SPLASHOVER. THE MAJORITY OF ROADS REMAIN PASSABLE WITH ONLY ISOLATED CLOSURES. THERE IS NO SIGNIFICANT THREAT TO LIFE AND ANY IMPACT ON PROPERTY IS MINIMAL. && && ALL TIDE HEIGHTS ARE RELATIVE TO MEAN LOWER LOW WATER. TIME OF HIGH TOTAL TIDES ARE APPROXIMATE TO THE NEAREST HOUR. SCITUATE TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 11.0 02/12 AM 9.7 1.3 4-5 NONE 13.3 02/12 PM 11.4 1.9 8-9 MODERATE 10.3 03/01 AM 9.9 0.4 11 NONE 11.5 03/01 PM 11.2 0.3 9-10 MINOR 11.1 04/01 AM 10.0 1.1 6-7 NONE BOSTON HARBOR TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 11.5 02/12 AM 10.2 1.3 1 NONE 13.9 02/12 PM 12.0 1.9 2 MODERATE 10.7 03/01 AM 10.4 0.3 2 NONE 12.0 03/01 PM 11.8 0.2 3 NONE 11.6 04/01 AM 10.5 1.1 2 NONE NEWBURYPORT TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 9.8 02/12 AM 8.5 1.3 5 NONE 11.6 02/12 PM 9.9 1.7 6-7 MINOR 9.2 03/01 AM 8.7 0.5 8 NONE 10.3 03/01 PM 9.8 0.5 6-7 NONE 9.9 04/02 AM 8.8 1.1 4-5 NONE GLOUCESTER HARBOR TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 10.7 02/12 AM 9.4 1.3 5 NONE 12.8 02/12 PM 11.0 1.8 8-9 MINOR 10.1 03/12 AM 9.5 0.6 10-11 NONE 11.2 03/01 PM 10.9 0.3 8-10 MINOR 10.8 04/01 AM 9.7 1.1 6 NONE SANDWICH HARBOR TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 11.0 02/12 AM 9.8 1.2 2 NONE 13.2 02/12 PM 11.5 1.7 5-6 MODERATE 10.7 03/01 AM 10.0 0.7 8 NONE 11.9 03/01 PM 11.4 0.5 8 MINOR 11.2 04/02 AM 10.1 1.1 4-5 NONE PROVINCETOWN HARBOR TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 9.7 02/12 AM 9.7 0.0 2 NONE 11.4 02/12 PM 11.4 0.0 4-5 NONE 10.0 03/01 AM 10.0 0.0 8 NONE 11.3 03/01 PM 11.3 0.0 7 NONE 10.1 04/02 AM 10.1 0.0 3-4 NONE CHATHAM - EAST COAST TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 8.4 02/12 AM 7.1 1.3 3-4 NONE 10.0 02/12 PM 8.2 1.8 7-9 MODERATE 7.8 03/01 AM 7.3 0.5 11-12 NONE 8.4 03/01 PM 8.2 0.2 10-12 MINOR 8.6 04/02 AM 7.5 1.1 6-7 NONE CHATHAM - SOUTH COAST TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 7.5 02/12 AM 6.2 1.3 1 NONE 9.0 02/12 PM 7.2 1.8 3-4 NONE 7.0 03/01 AM 6.4 0.6 5-6 NONE 7.8 03/01 PM 7.2 0.6 4 NONE 7.5 04/02 AM 6.5 1.0 3 NONE BUZZARDS BAY - WOODS HOLE TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 2.8 01/08 PM 1.9 0.9 1 NONE 4.0 02/09 AM 2.8 1.2 1-3 NONE 3.1 02/09 PM 2.0 1.1 4 NONE 1.9 03/10 AM 2.6 -0.7 3-4 NONE 1.9 03/10 PM 2.1 -0.2 2-3 NONE 3.2 04/11 AM 2.4 0.8 2 NONE NANTUCKET TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 3.0 01/06 PM 2.0 1.0 3 NONE 4.5 02/01 AM 3.2 1.3 3 NONE 5.9 02/01 PM 4.2 1.7 5-7 MINOR 3.8 03/01 AM 3.3 0.5 10 NONE 3.5 03/02 PM 4.0 -0.5 9 NONE 4.5 04/03 AM 3.4 1.1 6 NONE $$ NOCERASee also
References
- ^ Baltimore/Washington National Weather Service Forecast Office. "Coastal Flood Advisory". http://www.erh.noaa.gov/lwx/Defined/index.htm. http://www.erh.noaa.gov/lwx/Defined/index.htm. Retrieved 17 May 2011.
- ^ National Weather Service. "Coastal Flood Advisory". Iowa Environmental Mesonet NWS Product Archive. http://mesonet.agron.iastate.edu/vtec/2010-O-NEW-KBOX-CF-S-0001.html#2010-O-NEW-KBOX-CF-Y-0001. Retrieved 17 May 2011.
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