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Wind Advisories for New London County,
and Suffolk County have been cancelled.
Storm Warnings for the Ocean nearshore
waters have been discontinued, and have
been converted over to Gale Warnings.
Coastal Flood Warning is now in effect for
Tonight’s high tide cycle for Southern
Nassau and SW Suffolk.
Coastal Flood Advisories have been
extended through this evening for NJ / NY
Harbor, Southern Queens, Southern
Brooklyn, and Eastern Long Island.
Offshore Storm Briefing
What Has Changed?
Decision Support Briefing #6
As of: 6 AM Oct 11, 2019
New York, NY
Current Hazards
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Main Points
Hazard Impacts Location Timing
Coastal
Impacts
Marine
• Minor to moderate coastal
flooding.
• Inundation of 1 to 2 ft, with 2
to 3 ft across the back bays of
southern Nassau and SW
Suffolk.
• Areas of dune erosion and
localized overwashes
• Gale conditions. Seas of 9 to
15 ft on the Ocean.
• Vulnerable coastal locales
along NY/NJ Harbor, all of
LI, and SW CT.
• Greatest threat for
moderate impacts will be S
bays of LI.
• Localized moderate
impacts are possible
across the E bays of LI and
the North Fork.
Nearshore Ocean Waters
Times of high tide through
tonight
Through 2 AM Saturday
Through Today
New York, NY
Nearshore Non-Ocean
Waters• Gale conditions. Seas of 2 to
5 ft on LI Sound.
Marine
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None Limited Elevated Significant Extreme
Summary of Greatest Impacts
Coastal Impacts: South shore back bays of
southern Nassau and SW Suffolk
New York, NY
None Limited Elevated Significant Extreme
Coastal Impacts: Vulnerable locales along NY/NJ,
LI , and SW CT.
None Limited Elevated Significant Extreme
Marine: Nearshore Waters
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Marine / Coastal Hazards
Coastal Flood Hazards and Impacts: Moderate coastal flooding along the southern bays
of LI. Inundation of 2 to locally 3 ft above ground in
the most vulnerable locales.
Minor coastal flooding (inundation 1/2 to 1 ½ ft
above ground) in the most vulnerable coastal locales
of the advisory areas. Localized moderate flooding is
possible across eastern LI bays.
Several waterfront road closures expected with
minor damage to coastal properties possible.
Shoreline Hazards and Impacts: 5-9’ breaking waves along the oceanfront, 3 to 6’
along the twin forks, 3 to 5’ along northern LI
shoreline, 2 to 3’ along the north facing shoreline of
the bays.
Areas of Dune Erosion and localized overwashes
along the Atlantic ocean, Orient Point, and north
shore of LI shorefronts during times of high tide.
Minor to locally Moderate damage to shoreline/dune
structures possible
Timing: During times of high tide through tonight.
Additional minor to localized moderate flooding is
possible on Saturday, mainly across the south shore
back bays of Long Island
Coastal Flooding- Coastal Flood Warnings and Advisories in Effect
Please go to the NWS New York, NY Coastal Flooding Page for the latest coastal flood forecast and the tools to visualize the coastal impacts.https://www.weather.gov/okx/coastalflood
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Greatest threat areas for Widespread Minor to Moderate inundation through Friday night
high tides. (This inundation mapping product is experimental)
Coastal Flooding – Likely Inundation Areas
Please go to the NWS New York, NY Coastal Flooding Page for the latest coastal flood forecast and the tools to visualize the coastal impacts.https://www.weather.gov/okx/coastalflood
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Areas with potential for minor to locally moderate through Friday night high tide cycles.
(This inundation mapping product is experimental)
Coastal Flooding – Potential Inundation Areas
Please go to the NWS New York, NY Coastal Flooding Page for the latest coastal flood forecast and the tools to visualize the coastal impacts.https://www.weather.gov/okx/coastalflood
Weather Forecast Office Presentation Created
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Coastal Flooding Defintions
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Event Summary
Widespread minor to moderate coastal flood and shoreline impacts
through tonight.
Highest threat for moderate coastal impacts is along vulnerable
coastal locales along the southern bays of Nassau and SW Suffolk.
Gale conditions on the non-ocean nearshore waters through Today and
Gale conditions on the ocean nearshore waters through 2 am Saturday.
Seas of 9-15 ft on the ocean and 2 to 5 ft on LI Sound.
New York, NY