- Coastal flood watch
-
A Coastal Flood Watch 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 possible. 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 Watch.[1]
Contents
Example
The following is an example of a Coastal Flood Watch issued by the National Weather Service office in Taunton, Massachusetts.[2]
290 WHUS41 KBOX 252110 CFWBOX URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE TAUNTON MA 410 PM EST TUE JAN 25 2011 ...MINOR TO POCKETS OF LOW END MODERATE COASTAL FLOODING POSSIBLE DURING THE EARLY THURSDAY MORNING HIGH TIDE CYLE... MAZ007-015-016-019-022-260515- /O.NEW.KBOX.CF.A.0001.110127T0600Z-110127T1300Z/ EASTERN ESSEX MA-SUFFOLK MA-EASTERN NORFOLK MA- EASTERN PLYMOUTH MA-BARNSTABLE MA- 410 PM EST TUE JAN 25 2011 ...COASTAL FLOOD WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A COASTAL FLOOD WATCH...WHICH IS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING. A COASTAL FLOOD WATCH HAS BEEN ISSUED FOR THE EASTERN MASSACHUSETTS COAST FOR THE EARLY THURSDAY MORNING HIGH TIDE CYCLE. A RAPIDLY INTENSIFYING NOREASTER WILL PASS SOUTHEAST OF NANTUCKET LATE WEDNESDAY INTO EARLY THURSDAY. STRONG NORTHEAST WINDS WILL CAUSE SEAS TO RAPIDLY BUILD WEDNESDAY NIGHT. THIS WILL LIKELY YIELD A 2 TO 2.5 FOOT STORM SURGE DURING THE EARLY THURSDAY MORNING HIGH TIDE. THIS WILL RESULT IN MINOR TO POCKETS OF LOW END MODERATE COASTAL FLOODING DURING THE EARLY THURSDAY MORNING HIGH TIDE CYCLE ACROSS THE EASTERN MASSACHUSETTS COAST. IN ADDITION...THERE IS ALSO THE POTENTIAL FOR SOME BEACH EROSION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WATCH MEANS THAT THE POTENTIAL EXISTS FOR MODERATE OR MAJOR COASTAL FLOODING. MODERATE COASTAL FLOODING PRODUCES WIDESPREAD FLOODING OF VULNERABLE SHORE ROADS AND/OR BASEMENTS DUE TO THE HEIGHT OF STORM TIDE AND/OR WAVE ACTION. NUMEROUS ROAD CLOSURES ARE NEEDED. LIVES MAY BE AT RISK FOR PEOPLE WHO PUT THEMSELVES IN HARMS WAY. ISOLATED STRUCTURAL DAMAGE MAY BE OBSERVED. MAJOR COASTAL FLOODING IS CONSIDERED SEVERE ENOUGH TO CAUSE AT LEAST SCATTERED STRUCTURAL DAMAGE ALONG WITH WIDESPREAD FLOODING OF VULNERABLE SHORE ROADS AND/OR BASEMENTS. SOME VULNERABLE HOMES WILL BE SEVERELY DAMAGED OR DESTROYED. NUMEROUS ROADS ARE IMPASSABLE...SOME WITH WASHOUTS SEVERE ENOUGH TO BE LIFE- THREATENING IF ONE ATTEMPTED TO CROSS ON FOOT OR BY VEHICLE. SOME NEIGHBORHOODS WILL BE ISOLATED. EVACUATION OF SOME NEIGHBORHOODS MAY BE NECESSARY. && ALL TIDE HEIGHTS ARE RELATIVE TO MEAN LOWER LOW WATER. TIME OF HIGH TOTAL TIDES ARE APPROXIMATE TO THE NEAREST HOUR. BOSTON HARBOR TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 9.7 25/03 PM 10.0 -0.3 1 NONE 10.6 26/04 AM 10.7 -0.1 1 NONE 9.6 26/04 PM 9.4 0.2 1 NONE 12.7 27/05 AM 10.4 2.3 2 NONE 9.3 27/06 PM 8.9 0.4 1-2 NONE 10.3 28/06 AM 10.2 0.1 1 NONE NEWBURYPORT TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 8.3 25/04 PM 8.3 0.0 1 NONE 8.7 26/04 AM 8.7 0.0 1 NONE 8.0 26/05 PM 7.8 0.2 1-2 NONE 10.6 27/05 AM 8.5 2.1 6-9 NONE 7.8 27/06 PM 7.4 0.4 4-6 NONE 8.4 28/06 AM 8.3 0.1 1-2 NONE GLOUCESTER HARBOR TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 8.9 25/03 PM 9.2 -0.3 1-2 NONE 9.7 26/04 AM 9.8 -0.1 1 NONE 8.8 26/04 PM 8.6 0.2 2 NONE 11.8 27/05 AM 9.6 2.2 7-10 MINOR 8.6 27/06 PM 8.2 0.4 5-7 NONE 9.5 28/06 AM 9.4 0.1 2 NONE REVERE TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 9.2 25/03 PM 9.5 -0.3 1 NONE 10.1 26/04 AM 10.2 -0.1 1 NONE 9.1 26/04 PM 8.9 0.2 1-2 NONE 12.2 27/05 AM 9.9 2.3 6-8 MINOR 8.9 27/06 PM 8.5 0.4 4-5 NONE 9.8 28/06 AM 9.7 0.1 1-2 NONE SANDWICH HARBOR TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 9.6 25/04 PM 9.6 0.0 1 NONE 10.2 26/04 AM 10.2 0.0 1 NONE 9.3 26/05 PM 9.0 0.3 1-2 NONE 12.2 27/05 AM 10.0 2.2 7-8 MINOR 9.1 27/06 PM 8.6 0.5 3-4 NONE 9.9 28/06 AM 9.8 0.1 1-2 NONE PROVINCETOWN HARBOR TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 9.6 25/04 PM 9.6 0.0 1 NONE 10.1 26/04 AM 10.1 0.0 1 NONE 9.3 26/05 PM 9.0 0.3 1 NONE 12.2 27/05 AM 9.9 2.3 3 MINOR 8.9 27/06 PM 8.5 0.4 2 NONE 9.8 28/06 AM 9.7 0.1 2 NONE CHATHAM - EAST COAST TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 6.7 25/04 PM 7.0 -0.3 1-2 NONE 7.3 26/04 AM 7.4 -0.1 1 NONE 6.9 26/05 PM 6.6 0.3 2-4 NONE 9.5 27/05 AM 7.2 2.3 13-15 MODERATE 6.6 27/06 PM 6.2 0.4 6-9 NONE 7.0 28/06 AM 7.0 0.0 3 NONE CHATHAM - SOUTH COAST TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 6.2 25/04 PM 6.2 0.0 1 NONE 6.4 26/04 AM 6.4 0.0 1 NONE 6.1 26/05 PM 5.8 0.3 1-2 NONE 8.3 27/05 AM 6.3 2.0 4 NONE 5.9 27/06 PM 5.5 0.4 2 NONE 6.2 28/07 AM 6.2 0.0 2 NONE BUZZARDS BAY - WOODS HOLE TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 1.9 26/01 AM 2.2 -0.3 1 NONE 1.5 26/01 PM 1.5 0.0 1 NONE 3.8 27/02 AM 2.1 1.7 2-3 NONE 2.1 27/02 PM 1.3 0.8 2-3 NONE 1.9 28/03 AM 2.0 -0.1 2 NONE SCITUATE TOTAL ASTRO TIDE DAY/TIME TIDE SURGE WAVES FLOOD /FT/ /FT/ /FT/ /FT/ CATEGORY ------- ---------- ------- ------- ------- ---------- 9.2 25/04 PM 9.5 -0.3 1 NONE 10.0 26/04 AM 10.1 -0.1 1 NONE 9.1 26/04 PM 8.9 0.2 1-2 NONE 12.2 27/05 AM 9.9 2.3 7-10 MINOR 8.8 27/06 PM 8.4 0.4 5-7 NONE 9.8 28/06 AM 9.7 0.1 2 NONE $$ FRANKSee also
References
- ^ National Weather Service. "Coastal Flood Watch". Glossary - JetStream - Online School for Weather. http://www.srh.noaa.gov/jetstream//append/glossary_c.htm#cfwatch. Retrieved 17 May 2011.
- ^ National Weather Service. "Coastal Flood Watch". Iowa Environmental Mesonet NWS Product Archive. http://mesonet.agron.iastate.edu/vtec/2011-O-NEW-KBOX-CF-S-0001.html#2011-O-NEW-KBOX-CF-A-0001. Retrieved 17 May 2011.
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