[Tropical] Hurricane Local Statement

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Hurricane Sally Local Statement Advisory Number 17
National Weather Service New Orleans LA  AL192020
1022 AM CDT Tue Sep 15 2020

This product covers Southeast Louisiana and South Mississippi

SALLY CRAWLING NORTHWESTWARD TOWARD THE NORTHERN GULF COAST

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

* CHANGES TO WATCHES AND WARNINGS:
    - The Hurricane Warning has been cancelled for Pearl River
    - The Tropical Storm Warning has been cancelled for Ascension,
      Livingston, Orleans, Southern Tangipahoa, St. Charles, St.
      James, St. John The Baptist, St. Tammany, Upper Jefferson,
      Upper Plaquemines, and Upper St. Bernard
    - The Hurricane Warning has been cancelled and a Tropical Storm
      Warning has been issued for Hancock

* CURRENT WATCHES AND WARNINGS:
    - A Storm Surge Warning and Hurricane Warning are in effect for
      Harrison and Jackson
    - A Tropical Storm Warning is in effect for Lower Jefferson
    - A Storm Surge Warning and Tropical Storm Warning are in effect
      for Hancock, Lower Plaquemines, and Lower St. Bernard
    - A Storm Surge Warning is in effect for Ascension, Livingston,
      Orleans, Southern Tangipahoa, St. Charles, St. John The
      Baptist, St. Tammany, Upper Jefferson, Upper Plaquemines, and
      Upper St. Bernard

* STORM INFORMATION:
    - About 140 miles east-southeast of New Orleans LA or about 100
      miles south-southeast of Gulfport MS
    - 29.1N 88.2W
    - Storm Intensity 85 mph
    - Movement Northwest or 315 degrees at 2 mph

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

Sally is still a and is expected to continue to slowly move northwest
towards the Mississippi/Alabama border. Sally is expected to turn move
northward and make landfall along the Alabama Gulf coast Wednesday
morning. Life-threatening storm surge, damaging winds and torrential
rainfall are expected to move into portions of the Mississippi coast.

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

* SURGE:
Potential impacts from the main surge event are now unfolding across
east facing shores of Louisiana, the tidal lakes, and coastal
Mississippi. Remain well away from life-threatening surge having
additional significant impacts. If realized, these impacts 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.

Elsewhere across Southeast Louisiana and South Mississippi, little to
no impact is anticipated.

* FLOODING RAIN:
Potential impacts from the flooding rain are still unfolding across
coastal Mississippi. Remain well guarded against life-threatening flood
waters having possible devastating impacts. If realized, these impacts
include:
    - Extreme rainfall flooding may prompt numerous evacuations and
      rescues.
    - Rivers and tributaries may overwhelmingly overflow their banks
      in many places with deep moving water. Small streams, creeks,
      canals, and ditches may become raging rivers. Flood control
      systems and barriers may become stressed.
    - Flood waters can enter numerous structures within multiple
      communities, some structures becoming uninhabitable or washed
      away. Numerous places where flood waters may cover escape
      routes. Streets and parking lots become rivers of raging water
      with underpasses submerged. Driving conditions become very
      dangerous. Numerous road and bridge closures with some weakened
      or washed out.

Elsewhere across Southeast Louisiana and South Mississippi, little to
no impact is anticipated.

* WIND:
Potential impacts from the main wind event are now unfolding across
extreme coastal Louisiana and coastal Mississippi. Remain well
sheltered from life-threatening wind having additional extensive
impacts. If realized, these impacts 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.

Elsewhere across Southeast Louisiana and South Mississippi, little to
no impact is anticipated.

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

* EVACUATIONS:
IMMINENT/ONGOING PHASE - Do not enter evacuated areas until officials
have given the all clear to return.

* OTHER PREPAREDNESS INFORMATION:
Now is the time to stay inside and away from windows. Listen for
updates and be ready in case you lose electrical power. Keep a
battery-powered radio, charged cell phone and flashlight handy.

During the peak of the storm be ready to move quickly. Keep your
shoes on and rain gear handy. Boots and athletic shoes offer the best
foot protection if you become unexpectedly exposed to the weather.

Keep your cell phone charged and in power-saving mode. If you lose
power, use it sparingly and mainly for personal emergencies and
check-ins.

Do not venture outside while in the eye of a hurricane as any
improvement in weather will only be temporary. Once the eye passes,
conditions will become life threatening as winds immediately return
to dangerous speeds, so remain safely sheltered from the storm.

Do not be a thrill seeker or risk your life for senseless photos or
videos.

If you are prone to flooding or in an area under a storm surge watch
or warning, be prepared for the possibility of a quick and dramatic
rise in water levels.

If a tornado warning is issued for your area, quickly move to the
safest place within your shelter. Protect your head and body.

* 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 Orleans LA around 5 PM CDT, or sooner if conditions
warrant.

$$
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