[Tropical] Hurricane Local Statement

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Hurricane Henri Local Statement Advisory Number 24
National Weather Service Boston/Norton MA  AL082021
527 PM EDT Sat Aug 21 2021

This product covers Southern New England

**HENRI WILL IMPACT SOUTHERN NEW ENGLAND SUNDAY INTO MONDAY**

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Storm Surge Warning and Hurricane Warning are in effect for
      Block Island RI, Newport RI, and Washington RI
    - A Tropical Storm Warning is in effect for Hartford CT,
      Northwest Providence RI, Southeast Providence RI, Tolland CT,
      Western Kent RI, and Windham CT
    - A Storm Surge Warning and Tropical Storm Warning are in effect
      for Barnstable MA, Bristol RI, Dukes MA, Eastern Kent RI,
      Nantucket MA, Southern Bristol MA, and Southern Plymouth MA

* STORM INFORMATION:
    - About 350 miles south-southwest of Nantucket MA or about 380
      miles south of Providence RI
    - 36.3N 71.4W
    - Storm Intensity 75 mph
    - Movement North-northeast or 20 degrees at 18 mph

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

Hurricane Henri will continue moving northward tonight. Henri is
expected to make landfall near eastern Long Island or southern New
England early Sunday afternoon as either a strong tropical storm or a
lower end Category 1 hurricane. Henri should weaken rapidly as it heads
into Connecticut Sunday evening and slowly exits the region Monday.
The main hazards include damaging winds, flooding rain, storm surge
flooding, and possibly a tornado.

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

* WIND:
Protect against life-threatening wind having possible extensive impacts
across Connecticut, Rhode Island, Cape Cod and the Islands. Potential
impacts in this area include:
    - Roof damage to sturdy buildings, with some having window, door,
      and garage door failures leading to structural damage.
    - Many large trees snapped or uprooted.
    - Some roads impassable from large debris, and more within urban or
      heavily wooded places.
    - Power and communications outages.

Also, protect against dangerous wind having possible significant
impacts across the rest of southern New England.

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
extensive impacts across western Massachusetts and much of Connecticut.
Potential impacts include:
    - Major rainfall flooding may prompt many evacuations and rescues.
    - Rivers and tributaries may rapidly overflow their banks in
      multiple places. Small streams, creeks, and ditches may become
      dangerous rivers. In mountain areas, destructive runoff may run
      quickly down valleys while increasing susceptibility to
      rockslides and mudslides. Flood control systems and barriers
      may become stressed.
    - 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.

Protect against dangerous rainfall flooding having possible limited
to significant impacts across central Massachusetts and Rhode Island.

* SURGE:
Protect against life-threatening surge having possible significant
impacts across the south coast of Rhode Island and Massachusetts. This
includes Block Island, Nantucket and Marthas Vineyard. 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.
    - Major beach erosion with heavy surf breaching dunes. Strong and
      numerous rip currents.
    - Moderate damage to marinas, docks, boardwalks, and piers.
      Several small craft broken away from moorings, especially in
      unprotected anchorages.

Also, protect against locally hazardous surge having possible limited
impacts across eastern coastal Massachusetts.

* TORNADOES:
Protect against a tornado event having possible limited impacts
across Southern New England. Potential impacts include:
    - The occurrence of isolated tornadoes can hinder the execution
      of emergency plans during tropical events.
    - A few places may experience tornado damage, along with power
      and communications disruptions.
    - Locations could realize roofs peeled off buildings, chimneys
      toppled, mobile homes pushed off foundations or overturned,
      large tree tops and branches snapped off, shallow-rooted trees
      knocked over, moving vehicles blown off roads, and small boats
      pulled from moorings.

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

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

* 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. Plan to have your preparations completed today.

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 live in a place particularly vulnerable to flooding, such as
near the ocean or a large inland lake, in a low-lying or poor
drainage area, in a valley, or near an already swollen river, plan to
move to safe shelter on higher ground.

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.

There is a threat from tornadoes with this storm. Have multiple ways
to receive Tornado Warnings. Be ready to shelter quickly.

* 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 Boston/Norton MA around 11 PM EDT, or sooner if conditions
warrant.

$$
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