[Tropical] Hurricane Local Statement

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LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-241745-

Tropical Storm Marco Local Statement Advisory Number 16
National Weather Service New Orleans LA  AL142020
439 AM CDT Mon Aug 24 2020

This product covers Southeast Louisiana and South Mississippi

**HURRICANE WARNINGS DISCONTINUED FOR MARCO BUT DANGEROUS STORM SURGE
STILL ANTICIPATED**


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

* CHANGES TO WATCHES AND WARNINGS:
    - The Tropical Storm Warning, Storm Surge Watch, and Hurricane
      Watch have been cancelled for Livingston and Southern Tangipahoa
    - The Tropical Storm Watch has been cancelled for Amite, Northern
      Tangipahoa, Pearl River, Pike, St. Helena, Walthall,
      Washington, and Wilkinson
    - The Tropical Storm Warning has been cancelled for East Baton
      Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton
      Rouge, and West Feliciana
    - The Storm Surge Watch has been cancelled for Jackson
    - The Hurricane Watch has been cancelled for Orleans, St. James,
      Upper Plaquemines, and Upper St. Bernard
    - The Storm Surge Watch and Hurricane Watch have been cancelled
      for St. Charles, St. John The Baptist, St. Tammany, and Upper
      Jefferson
    - The Hurricane Warning has been cancelled and a Tropical Storm
      Warning has been issued for Assumption, Lower Jefferson, Lower
      Lafourche, Lower Plaquemines, Lower St. Bernard, Lower
      Terrebonne, Upper Lafourche, and Upper Terrebonne
    - The Tropical Storm Warning and Hurricane Watch have been
      cancelled for Ascension

* CURRENT WATCHES AND WARNINGS:
    - A Storm Surge Warning and Tropical Storm Warning are in effect
      for Hancock, Harrison, Lower Jefferson, Lower Lafourche, Lower
      Plaquemines, Lower St. Bernard, Lower Terrebonne, Orleans,
      Upper Plaquemines, and Upper St. Bernard
    - A Tropical Storm Warning is in effect for Assumption, Jackson,
      St. Charles, St. James, St. John The Baptist, St. Tammany,
      Upper Jefferson, Upper Lafourche, and Upper Terrebonne

* STORM INFORMATION:
    - About 210 miles southeast of New Orleans LA or about 200 miles
      southeast of Houma LA
    - 27.6N 88.2W
    - Storm Intensity 60 mph
    - Movement Northwest or 325 degrees at 10 mph

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

Tropical Storm Marco will continue to approach the coast of
Southeast Louisiana today. Tropical Storm Marco is expected to turn
west and move parallel to the Louisiana coast and then gradually
weaken tonight.

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

* WIND:
Protect against dangerous wind having possible significant impacts
across coastal parishes of southeast Louisiana. Potential impacts
in this area include:
    - Some damage to roofing and siding materials, along with damage
      to porches, awnings, carports, and sheds. A few buildings
      experiencing window, door, and garage door failures. Mobile
      homes damaged, especially if unanchored. Unsecured lightweight
      objects become dangerous projectiles.
    - Several large trees snapped or uprooted, but with greater
      numbers in places where trees are shallow rooted. Several
      fences and roadway signs blown over.
    - Some roads impassable from large debris, and more within urban
      or heavily wooded places. A few bridges, causeways, and access
      routes impassable.
    - Scattered power and communications outages, but more prevalent
      in areas with above ground lines.

Also, protect against hazardous wind having possible limited impacts
across most of southwest and coastal Mississippi, and the remainder
of southeast Louisiana.

* SURGE:
Protect against life-threatening surge having possible significant
impacts across coastal portions of southeast Louisiana and coastal
portions of Mississippi west of Ocean Springs. 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 coastal portions of Mississippi east of Ocean Springs,
and areas along the shores of Lake Pontchartrain and Maurepas.

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

* FLOODING RAIN:
Protect against dangerous rainfall flooding having possible
significant impacts across portions of southeast Louisiana and
south Mississippi along and south of Interstates 10 and 12.
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 southwest Mississippi and the northern tier
of southeast Louisiana parishes.

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

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.

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

* OTHER PREPAREDNESS INFORMATION:

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.

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 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.

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 AM CDT, or sooner if conditions
warrant.

$$
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