National Weather Service Raw Text Product

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CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-201800-

Tropical Storm Henri Local Statement Advisory Number 18
National Weather Service New York NY  AL082021
559 AM EDT Fri Aug 20 2021

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

**HENRI IS FORECAST TO IMPACT LONG ISLAND AND SOUTHERN CONNECTICUT SUNDAY AND MONDAY**

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

* CHANGES TO WATCHES AND WARNINGS:
    - A Storm Surge Watch and Tropical Storm Watch have been issued 
      for Northern Nassau, Southern Fairfield, Southern Nassau, and 
      Southern Westchester
    - A Storm Surge Watch and Hurricane Watch have been issued for 
      Northeast Suffolk, Northwest Suffolk, Southeast Suffolk, 
      Southern Middlesex, Southern New Haven, Southern New London, 
      and Southwest Suffolk

* CURRENT WATCHES AND WARNINGS:
    - A Storm Surge Watch and Tropical Storm Watch are in effect for 
      Northern Nassau, Southern Fairfield, Southern Nassau, and 
      Southern Westchester
    - A Storm Surge Watch and Hurricane Watch are in effect for 
      Northeast Suffolk, Northwest Suffolk, Southeast Suffolk, 
      Southern Middlesex, Southern New Haven, Southern New London, 
      and Southwest Suffolk

* STORM INFORMATION:
    - About 730 miles south of New York City NY or about 750 miles 
      south of Montauk Point NY
    - 30.2N 73.1W
    - Storm Intensity 65 mph
    - Movement West-northwest or 300 degrees at 9 mph

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

Tropical Storm Henri is currently due east of the South Carolina
coastline and will likely track north nearing eastern Long Island and
into southern New England Sunday. 

The main threats from Henri are heavy rain capable of producing flash
flooding, tropical storm force winds along the south shore and east
end of Long Island and across southeast Connecticut, and associated
marine and coastal hazards, including very rough seas and dangerous
rip currents. 

A widespread rainfall of 1 to 3 inches is forecast with the potential
of 2 to 4 inches locally higher amounts are possible Saturday through
Sunday evening. The highest amounts are forecast to be across eastern
Long Island and much of southeastern Connecticut. This will present a
likelihood for scattered areas of flash flooding, particularly for
areas that could see heavy rain Saturday leading into Sunday.

Dangerous marine conditions are likely on the ocean waters south of
Long Island, as well as on Long Island Sound, and the south shore and
eastern bays of Long Island. Tropical storm force winds will be most
likely in those areas, near the south shores and east end of Long
Island and southeast Connecticut, and in some higher elevations away
from the coastline. Dangerous rip currents and high surf are expected
along the ocean beaches of Long Island beginning Friday. 

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

* WIND:
Prepare for dangerous wind having possible significant impacts across 
eastern Long Island and Southern Connecticut. Potential impacts in 
this area include:
    - Some damage to roofing and siding materials, along with damage 
      to porches, awnings, carports, and sheds. A few buildings 
      experiencing window, door, and garage door failures. Mobile 
      homes damaged, especially if unanchored. Unsecured lightweight 
      objects become dangerous projectiles.
    - Several large trees snapped or uprooted, but with greater 
      numbers in places where trees are shallow rooted. Several 
      fences and roadway signs blown over.
    - Some roads impassable from large debris, and more within urban 
      or heavily wooded places. A few bridges, causeways, and access 
      routes impassable.
    - Scattered power and communications outages, but more prevalent 
      in areas with above ground lines.

Also, prepare for hazardous wind having possible limited impacts 
across southern New York and northeast new Jersey.

* SURGE:
Prepare for locally hazardous surge having possible limited impacts 
across coastal Long Island Connecticut. Potential impacts in this area 
include:
    - Localized inundation with storm surge flooding mainly along 
      immediate shorelines and in low lying spots, or in areas 
      farther inland near where higher surge waters move ashore.
    - Sections of near shore roads and parking lots become overspread 
      with surge water. Driving conditions dangerous in places where 
      surge water covers the road.
    - Moderate beach erosion. Heavy surf also breaching dunes, mainly 
      in usually vulnerable locations. Strong and frequent rip 
      currents.
    - Minor to locally moderate damage to marinas, docks, boardwalks, 
      and piers. A few small craft broken away from moorings.

Elsewhere across Southeast New York, Northeast New Jersey, and 
Southern Connecticut, little to no impact is anticipated.

* FLOODING RAIN:
Prepare for dangerous rainfall flooding having possible significant 
impacts across eastern Long Island and Southern Connecticut. Potential
impacts include:
    - Rivers and streams may quickly become swollen with swifter 
      currents and may overspill their banks in a few places, 
      especially in usually vulnerable spots. Small streams, creeks, 
      canals, and ditches may overflow.
    - Flood waters can enter some structures or weaken foundations. 
      Several places may experience expanded areas of rapid 
      inundation at underpasses, low lying spots, and poor drainage 
      areas. Some streets and parking lots take on moving water as 
      storm drains and retention ponds overflow. Driving conditions 
      become hazardous. Some road and bridge closures.

Prepare for locally hazardous rainfall flooding having possible 
limited impacts across southern New York and northeast new Jersey.

* 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 official for recommended preparedness actions, 
including possible evacuation. If ordered to evacuate, do so 
immediately.

For those not under evacuation orders, assess the risk from wind,
 falling trees, and flooding at your location. If you decide to 
move, relocate to a safer location nearby. If you do not relocate, 
help keep roadways open for those under evacuation orders.

If evacuating, leave with a destination in mind and allow extra 
time to get there. Take your emergency supplies kit. Gas up your 
vehicle ahead of time.

Let others know where you are going prior to departure. Secure 
loose items and pets in the car, and avoid distracted driving.

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 extend well away from the 
center of the storm. 

If you are a visitor, know the name of the county in which you are 
located and where it is relative to current watches and warnings. If 
staying at a hotel, ask the management staff about their onsite 
disaster plan. Listen for evacuation orders, especially pertaining to 
area visitors.

Closely monitor 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 ready.gov
- For information on creating an emergency plan see getagameplan.org
- For additional disaster preparedness information see redcross.org

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

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

$$