[Tropical] Hurricane Local Statement

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Tropical Storm Sally Local Statement Advisory Number 6
National Weather Service New Orleans LA  AL192020
1020 PM CDT Sat Sep 12 2020

This product covers Southeast Louisiana and South Mississippi

...SALLY EXPECTED TO STRENGTHEN OVER THE GULF OF MEXICO...

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Hurricane Watch is in effect for Ascension, Lower Jefferson,
      Pearl River, St. James, and Washington
    - A Storm Surge Watch and Hurricane Watch are in effect for
      Hancock, Harrison, Jackson, Livingston, 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 Tropical Storm Watch is in effect for Northern Tangipahoa,
      Pike, St. Helena, and Walthall

* STORM INFORMATION:
    - About 510 miles east-southeast of New Orleans LA or about 470
      miles southeast of Gulfport MS
    - 26.3N 82.9W
    - Storm Intensity 40 mph
    - Movement West-northwest or 285 degrees at 8 mph

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

Tropical Storm Sally continues to pull away from the lower Florida
coast into the open eastern Gulf of Mexico. Sally is expected to move
in a general northwesterly direction through Monday night, making
landfall somewhere in the north-central gulf coast region Tuesday.
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 late Monday
night and continue for the better part of Tuesday before improving
Wednesday morning.

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

* WIND:
Prepare for life-threatening wind having possible extensive impacts
across coastal Mississippi west of Biloxi, eastern portions of
St. Tammany and Orleans Parishes, and much of Lower St. Benard Parish
and Plaquemines Parish. 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 dangerous wind having possible limited to
significant impacts across the remainder of coastal Mississippi
and portions of Southeast Louisiana mainly along and to the east of
a Grosse Tete, LA to McComb, MS line.

* SURGE:
Prepare for life-threatening surge having possible extensive impacts
across coastal areas of Mississippi mainly to the west of Ocean
Springs, portions of eastern St. Tammany Parish near Slidell, the Lake
Catherine and Venetian Isles areas of Orleans Parish, all of lower St.
Bernard outside of the hurricane protection levees, and all
of the eastbank of Plauqemines Parish including areas not
protected by the federal hurricane protection levees. 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, prepare for life-threatening surge having possible significant
impacts across coastal areas of Mississippi to the east of Ocean
Springs and areas along the shores of Lake Pontchartrain on the
Northshore and the River Parishes that are outside of the hurricane
protection system.

Also, prepare for locally hazardous surge having possible limited
impacts across coastal areas of Southeast Louisiana to the west
of the Mississippi River.

* FLOODING RAIN:
Prepare for dangerous rainfall flooding having possible significant
impacts across coastal Mississippi and portions of Southeast
Louisiana to the east of a Slidell to Kenner to Port Fourchon line.
Potential impacts include:
    - Moderate rainfall flooding may prompt several evacuations and
      rescues.
    - Rivers and tributaries may quickly become swollen with swifter
      currents and overspill their banks in a few places, especially
      in usually vulnerable spots. Small streams, creeks, canals, and
      ditches 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 the remainder of the Northshore to the north
and west of Slidell, the River Parishes, and the Bayou region of
Houma and Thibodaux.

* TORNADOES:
Prepare for a tornado event having possible limited impacts across
portion of coastal Mississippi. 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.


* 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 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, plan to move to safe shelter.

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.

Always heed the advice of local officials and comply with orders that
are issued. Do not needlessly jeopardize your life or the lives of
others.

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

Be sure to let friends and family members know of your intentions for
weathering the storm and your whereabouts. Have someone located away
from the threatened area serve as your point of contact. Share vital
contact information with others. Keep cell phones handy and charged.

Check on those who may not be fully aware of the situation or who are
unable to make personal preparations.

If you are a visitor, know the name of the county or parish 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 New Orleans LA around 5 AM CDT, or sooner if conditions
warrant.

$$
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