[Tropical] Hurricane Local Statement

Sun Aug 23 13:40:47 CDT 2020

WTUS84 KLIX 231840
HLSLIX
LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-240245-

Hurricane Marco Local Statement Intermediate Advisory Number 13A
National Weather Service New Orleans LA  AL142020
140 PM CDT Sun Aug 23 2020

This product covers Southeast Louisiana and South Mississippi

**HURRICANE MARCO CROSSING THE CENTRAL GULF**

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

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

* STORM INFORMATION:
    - About 370 miles south-southeast of New Orleans LA or about 370
      miles south-southeast of Gulfport MS or about 360 miles
      southeast of Houma LA
    - 25.3N 87.4W
    - Storm Intensity 75 mph
    - Movement North-northwest or 340 degrees at 14 mph

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

Marco has strengthened to a hurricane as it moves across the
central Gulf of Mexico today.  Hurricane Marco is forecast to
approach southeast Louisiana and southern Mississippi tonight
and make landfall along the Southeast Louisiana coastline during
the day tomorrow.

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

* WIND:
Protect against life-threatening wind having possible extensive
impacts across coastal Southeast Louisiana. 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 limited to
significant impacts across the remainder of Southeast Louisiana and
Southern Mississippi.

* SURGE:
Protect against life-threatening surge having possible significant
impacts across coastal areas of Southeast Louisiana and southern
Mississippi. 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.

* FLOODING RAIN:
Protect against dangerous rainfall flooding having possible
significant impacts across coastal Mississippi, coastal Southeast
Louisiana, and metro New Orleans. 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.

Protect against locally hazardous rainfall flooding having possible
limited impacts across metro Baton Rouge and Southwest Mississippi.

* TORNADOES:
Protect against a tornado event having possible limited impacts
across Southeast Louisiana and South 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.

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

* EVACUATIONS:

WATCH/WARNING PHASE - Listen to local official for recommended
preparedness actions, including possible evacuation. If ordered to
evacuate, do so immediately.

WATCH/WARNING PHASE - 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.

WATCH/WARNING PHASE - 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.

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

WATCH/WARNING PHASE - If evacuating, follow designated evacuation
routes. Seek traffic information on roadway signs, the radio, and
from official sources.

* 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.

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.

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.

If a Tornado Warning is issued for your area, be ready to shelter
quickly, preferably away from windows and in an interior room not
prone to flooding. If driving, scan the roadside for quick shelter
options.

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 5 PM CDT, or sooner if conditions
warrant.

$$
This weather bulletin was brought to you by:
www.nashvilleweather.net