[Tropical] Hurricane Local Statement

EMWIN Server emwin at nashvilleweather.net
Fri Aug 20 16:28:05 CDT 2021 

WTUS81 KOKX 202127
HLSOKX
CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-210530-

Tropical Storm Henri Local Statement Advisory Number 20
National Weather Service New York NY  AL082021
527 PM EDT Fri Aug 20 2021

This product covers Southeast New York, Northeast New Jersey, and Southern Connecticut

**HURRICANE CONDITIONS EXPECTED ACROSS PORTIONS OF LONG ISLAND AND
SOUTHERN CONNECTICUT**

NEW INFORMATION
---------------

* CHANGES TO WATCHES AND WARNINGS:
    - The Hurricane Watch has been upgraded to a Hurricane Warning
      for Southwest Suffolk
    - The Tropical Storm Watch has been upgraded to a Tropical Storm
      Warning for Northern Nassau, Southern Nassau, and Southern
      Westchester
    - The Storm Surge Watch has been upgraded to a Storm Surge
      Warning and the Tropical Storm Watch has been upgraded to a
      Tropical Storm Warning for Southern Fairfield
    - A Tropical Storm Watch has been issued for Bronx, Eastern
      Bergen, Eastern Essex, Eastern Union, Hudson, Kings (Brooklyn),
      New York (Manhattan), Northern Queens, Northern Westchester,
      Richmond (Staten Island), and Southern Queens
    - The Hurricane Watch has been upgraded to a Hurricane Warning
      and the Storm Surge Watch has been upgraded to a Storm Surge
      Warning for Northeast Suffolk, Northwest Suffolk, Southeast
      Suffolk, Southern Middlesex, Southern New Haven, and Southern
      New London

* CURRENT WATCHES AND WARNINGS:
    - A Hurricane Warning and Storm Surge Watch are in effect for
      Southwest Suffolk
    - A Storm Surge Warning and Tropical Storm Warning are in effect
      for Southern Fairfield
    - A Tropical Storm Watch is in effect for Eastern Bergen, Eastern
      Essex, Eastern Union, Hudson, Kings (Brooklyn), New York
      (Manhattan), Northern Fairfield, Northern Westchester, Richmond
      (Staten Island), and Southern Queens
    - A Storm Surge Watch and Tropical Storm Watch are in effect for
      Bronx and Northern Queens
    - A Hurricane Watch is in effect for Northern Middlesex, Northern
      New Haven, and Northern New London
    - A Tropical Storm Warning and Storm Surge Watch are in effect
      for Northern Nassau, Southern Nassau, and Southern Westchester
    - A Storm Surge Warning and Hurricane Warning are in effect for
      Northeast Suffolk, Northwest Suffolk, Southeast Suffolk,
      Southern Middlesex, Southern New Haven, and Southern New London

* STORM INFORMATION:
    - About 660 miles south of New York City NY or about 690 miles
      south of Montauk Point NY
    - 31.2N 73.9W
    - Storm Intensity 70 mph
    - Movement North-northwest or 340 degrees at 7 mph

SITUATION OVERVIEW
------------------

Tropical Storm Henri is currently 660 miles south of New York City NY or
about 690 miles south of Montauk Point NY. Henri will likely track north
nearing eastern Long Island and southern New England Sunday as a Category 1
Hurricane.

The main threats from Henri are potentially life-threatening storm
surge, heavy rain capable of producing flash flooding, tropical storm
or hurricane force winds across Long Island and across southern Connecticut.
Tropical storm conditions are also possible as far west as the New York
City Metro. There will also be associated marine and coastal hazards, including
very rough seas and dangerous rip currents.

A widespread rainfall of 3 to 6 inches is forecast in the path of
Henri with localized higher amounts possible Sunday through Sunday
night. The highest amounts are forecast to be along and west of the
center of Henri. This will present a likelihood for areas of flash
flooding.

Dangerous marine conditions are likely on the waters surrounding Long
Island, including the Long Island Bays. Severe beach erosion is also possible.
Dangerous rip currents are expected at ocean beaches.


POTENTIAL IMPACTS
-----------------

* WIND:
Prepare for life-threatening wind having possible extensive impacts
across eastern Long Island and southern Connecticut. Potential impacts
in this area include:
    - Considerable roof damage to sturdy buildings, with some having
      window, door, and garage door failures leading to structural
      damage. Mobile homes severely damaged, with some destroyed.
      Damage accentuated by airborne projectiles. Locations may be
      uninhabitable for weeks.
    - Many large trees snapped or uprooted along with fences and
      roadway signs blown over.
    - Some roads impassable from large debris, and more within urban
      or heavily wooded places. Several bridges, causeways, and
      access routes impassable.
    - Large areas with power and communications outages.

Also, prepare for significant impacts from wind across the New York City
metro, portions of the Lower Hudson Valley, and northeast New Jersey.

* SURGE:
Prepare for life-threatening surge having possible significant
impacts across all coastal areas of Long Island Sound, and much of
the Great South Bay and southeast coast of Long Island.
Potential impacts in this area include:
    - Areas of inundation with storm surge flooding accentuated by
      waves. Damage to several buildings, mainly near the coast.
    - Sections of near shore escape routes and secondary roads become
      weakened or washed out, especially in usually vulnerable low
      spots. Flood control systems and barriers may become stressed.
    - Major beach erosion with heavy surf breaching dunes. Very
      dangerous surf and rip currents.
    - Moderate damage to marinas, docks, boardwalks, and piers.
      Several small craft broken away from moorings, especially in
      unprotected anchorages.

Also, prepare for locally hazardous surge having limited
impacts across Jamaica Bay, New York Harbor, and north facing locations
of Jones Beach and Fire Island.

* FLOODING RAIN:
Prepare for life-threatening rainfall flooding having possible
extensive impacts across Long Island and southern Connecticut. Potential
impacts include:
    - Major rainfall flooding may prompt many evacuations and rescues.
    - Rivers and streams may rapidly overflow their banks in multiple
      places. Small streams, creeks, canals, and ditches may become
      dangerous rivers. Flood control systems and barriers may become
      stressed.
    - In hilly terrain of Connecticut, destructive runoff may run quickly
      down valleys, and increase susceptibility to rockslides and
      mudslides.
    - Flood waters can enter many structures within multiple
      communities, some structures becoming uninhabitable or washed
      away. Many places where flood waters may cover escape routes.
      Streets and parking lots become rivers of moving water with
      underpasses submerged. Driving conditions become dangerous.
      Many road and bridge closures with some weakened or washed out.

Prepare for rainfall flooding having possible significant
impacts across the rest of the area.

* TORNADOES:
Little to no impacts are anticipated at this time across Southeast New
York, Northeast New Jersey, and Southern Connecticut.

PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------

* EVACUATIONS:
Listen to local officials for recommended preparedness actions, including
possible evacuation. If ordered to evacuate, do so immediately.

If evacuating, follow designated evacuation routes. Seek traffic information
on roadway signs, on the radio, and from official sources.

* OTHER PREPAREDNESS INFORMATION:
Now is the time to check your emergency plan and emergency supplies
kit and take necessary actions to protect your family and secure your
home or business.

When making safety and preparedness decisions, do not focus on the
exact forecast track, since hazards such as flooding rain, damaging
wind gusts, storm surge, and tornadoes can extend well away from the
center of the storm.

If you live in a place particularly vulnerable to flooding, such as
near the ocean, in a low lying or poor drainage area, in a valley, or
near a river, plan to move to safe shelter on higher ground.

When securing your property, outside preparations should be completed
as soon as possible before conditions deteriorate. The onset of
strong winds or flooding can cause certain preparedness activities to
become unsafe.

Closely monitor http://weather.gov, NOAA Weather Radio, and local
news outlets for official storm information. Listen for possible
changes to the forecast.


* ADDITIONAL SOURCES OF INFORMATION:
- For information on appropriate preparations see http://ready.gov
- For information on creating an emergency plan see
http://getagameplan.org
- For additional disaster preparedness information see
http://redcross.org

NEXT UPDATE
-----------

The next local statement will be issued by the National Weather
Service in New York NY around 12 AM EDT, or sooner if conditions
warrant.

$$
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