NWS - Coastal Flood Advisory [updated]

Coastal Hazard Message
National Weather Service New York NY
604 AM EDT Tue Mar 20 2018

...MINOR TO MODERATE COASTAL FLOODING EXPECTED OVER MULTIPLE HIGH
TIDE CYCLES TONIGHT THROUGH WEDNESDAY NIGHT...

NYZ178-201815-
/O.NEW.KOKX.CF.Y.0018.180321T1400Z-180321T1800Z/
/O.EXT.KOKX.CF.S.0010.180321T0100Z-180321T0500Z/
Southern Queens-
604 AM EDT Tue Mar 20 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 10 AM TO 2 PM EDT
WEDNESDAY...

* LOCATIONS...Vulnerable locales along Jamaica bay, as well as
  along the ocean beachfront.

* TIDAL DEPARTURE...1 1/2 to 2 ft tonight, and around 2 1/2 feet
  on on Wednesday.

* TIMING...Localized minor coastal flooding possible with the high
  tide cycle tonight. More widespread coastal flooding expected
  with the high tide cycle on Wednesday. Minor to locally moderate
  coastal flooding possible Wednesday night.

* COASTAL FLOOD IMPACTS...Around 1 foot of inundation above ground
  level in low lying, vulnerable areas during the high tide cycle
  tonight, and 1 to 2 feet on Wednesday. Some roads and low lying
  property including parking lots, parks, lawns and
  homes/businesses with basements near the waterfront will
  experience shallow flooding.

* SHORELINE IMPACTS...Breaking waves will result in beach erosion,
  with minor damage to dune structures possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.

Time of high total tides are approximate to the nearest hour.

Jamaica Bay NY
MLLW CATEGORIES - MINOR 7.5 FT, MODERATE 8.2 FT, MAJOR 9.0 FT
MHHW CATEGORIES - MINOR 1.6 FT, MODERATE 2.3 FT, MAJOR 3.1 FT

             Total      Total    Departure
 Day/Time    Tide       Tide     from Norm   Waves    Flood
            ft MLLW    ft MHHW       ft       ft      Impact
 --------  ---------  ---------  ---------  -------  --------
 20/11 AM   5.9/ 6.4   0.0/ 0.5   0.1/ 0.6    1-2      None
 20/11 PM   7.0/ 7.5   1.1/ 1.6   0.9/ 1.4    2-3      None
 21/12 PM   7.4/ 7.9   1.5/ 2.0   1.9/ 2.3     3      Minor
 22/12 AM   8.0/ 8.5   2.1/ 2.6   1.9/ 2.3    2-3    Moderate
 22/01 PM   6.5/ 7.0   0.6/ 1.1   1.2/ 1.7     2       None
 23/01 AM   6.7/ 7.2   0.8/ 1.3   0.7/ 1.1     1       None