[Tropical] Hurricane Local Statement

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Tropical Storm Sally Local Statement Advisory Number 9
National Weather Service New Orleans LA  AL192020
439 PM CDT Sun Sep 13 2020

This product covers Southeast Louisiana and South Mississippi

...SALLY FORECAST TO BECOME A HURRICANE ON MONDAY...

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Storm Surge Warning, Tropical Storm Warning, and Hurricane
      Watch are in effect for Jackson
    - A Tropical Storm Warning is in effect for Amite, East Baton
      Rouge, East Feliciana, Northern Tangipahoa, Pike, St. Helena,
      and Walthall
    - A Storm Surge Warning and Hurricane Warning are in effect for
      Ascension, Hancock, Harrison, Livingston, Lower Jefferson,
      Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Orleans,
      Southern Tangipahoa, St. Charles, St. John The Baptist, St.
      Tammany, Upper Jefferson, Upper Plaquemines, and Upper St.
      Bernard
    - A Hurricane Warning is in effect for Assumption, Lower
      Terrebonne, Pearl River, St. James, Upper Lafourche, Upper
      Terrebonne, and Washington

* STORM INFORMATION:
    - About 300 miles east-southeast of New Orleans LA or about 260
      miles southeast of Gulfport MS
    - 27.8N 85.9W
    - Storm Intensity 60 mph
    - Movement West-northwest or 295 degrees at 9 mph

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

Tropical Storm Sally continues to move west northwest across the
eastern Gulf of Mexico. Sally is expected to move in this same general
direction tonight and Monday morning, and is expected to make
landfall along the Southeast Louisiana coast by Monday evening.
Tropical Storm Sally is forecast to intensify to a Category
1 hurricane prior to landfall. Storm surge, damaging winds and
torrential rainfall is expected to move into the area during the
day tomorrow and continue for the better part of Tuesday before
improving Wednesday morning.

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

* SURGE:
Protect against life-threatening surge having possible extensive
impacts across coastal areas from the mouth of the Mississippi River
to Ocean Springs outside of the federal hurrican protection system.
Potential impacts in this area include:
    - Large areas of deep inundation with storm surge flooding
      accentuated by battering waves. Structural damage to buildings,
      with several washing away. Damage compounded by floating
      debris. Locations may be uninhabitable for an extended period.
    - Large sections of near-shore escape routes and secondary roads
      washed out or severely flooded. Flood control systems and
      barriers may become stressed.
    - Severe beach erosion with significant dune loss.
    - Major damage to marinas, docks, boardwalks, and piers. Many
      small craft broken away from moorings, especially in
      unprotected anchorages with some lifted onshore and stranded.

Also, protect against life-threatening surge having possible
significant impacts across coastal areas from Ocean
Springs to the MS/AL state line, nearshore areas of Lake
Pontchartrain and Maurapas outside of the hurricane protection system,
and across coastal of areas from the mouth of the Mississippi River
to Port Fourchon.

Also, protect against locally hazardous surge having possible limited
impacts across coastal areas from Port Fourchon to Burns Point.

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

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
devastating impacts across areas of I-55 including the Northshore
and metro New Orleans and all of coastal Mississippi. Potential
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.

Protect against life-threatening rainfall flooding having possible
significant to extensive impacts across the remainder of Southeast
Louisiana and Southern Mississippi.

* WIND:
Protect against life-threatening wind having possible extensive
impacts across Southeast Louisiana and portions of coastal
Mississippi. This includes the New Orleans and Houma metro areas.
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, protect against dangerous wind having possible significant
impacts across the remainder of Southeast Louisiana and Southern
Mississippi.

* TORNADOES:
Protect against a tornado event having possible limited impacts
across portions of coastal Mississippi and extreme Southeast
Louisiana including metro New Orleans. 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.

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

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.

* OTHER PREPAREDNESS INFORMATION:
Now is the time to complete all preparations to protect life and
property in accordance with your emergency plan. Ensure you are in a
safe location before the onset of strong winds or possible flooding.

If you are relocating to safe shelter, leave as early as possible.
Allow extra time to reach your destination. Many roads and bridges
will be closed once strong winds arrive. Check the latest weather
forecast before departing and drive with caution.

If heading to a community shelter, become familiar with the shelter
rules before arrival, especially if you have special needs or have
pets. Take essential items with you from your Emergency Supplies Kit.

Failure to adequately shelter may result in serious injury or loss of
life. Always heed the advice of local officials and comply with any
orders that are issued. Remember, during the storm 9 1 1 Emergency
Services may not be able to immediately respond if conditions are
unsafe. This should be a big factor in your decision making.

Keep cell phones well charged. Cell phone chargers for automobiles
can be helpful, but be aware of your risk for deadly carbon monoxide
poisoning if your car is left idling in a garage or other poorly
ventilated area.

It is important to remain calm, informed, and focused during an
emergency. Be patient and helpful with those you encounter.

If you are a visitor, be sure to know the name of the city or town in
which you are staying and the name of the county or parish in which
it resides. Listen for these locations in local news updates. Pay
attention for instructions from local authorities.

Storm surge is the leading killer associated with tropical storms and
hurricanes! Make sure you are in a safe area away from the surge
zone. Even if you are not in a surge-prone area, you could find
yourself cutoff by flood waters during and after the storm. Heed
evacuation orders issued by the local authorities.

Rapidly rising flood waters are deadly. If you are in a flood-prone
area, consider moving to higher ground. Never drive through a flooded
roadway. Remember, turn around don't drown!

If in a place that is vulnerable to high wind, such as near large
trees, a manufactured home, upper floors of a high-rise building, or
on a boat, consider moving to a safer shelter before the onset of
strong winds or flooding.

Closely monitor weather.gov, NOAA Weather radio or local news outlets
for official storm information. Be ready to adapt to possible changes
to the forecast. Ensure you have multiple ways to receive weather
warnings.

* 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 11 PM CDT, or sooner if conditions
warrant.

$$
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