[Tropical] Hurricane Local Statement

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Hurricane Delta Local Statement Advisory Number 20
National Weather Service New Orleans LA  AL262020
1055 AM CDT Fri Oct 9 2020

This product covers Southeast Louisiana and South Mississippi

...CENTER OF DELTA MOVING NORTHWARD TOWARD THE SOUTHWEST LOUISIANA
COAST...

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

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

* STORM INFORMATION:
    - About 250 miles west-southwest of New Orleans LA or about 330
      miles west-southwest of Gulfport MS
    - 28.0N 93.8W
    - Storm Intensity 115 mph
    - Movement North or 0 degrees at 13 mph

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

At 1000 AM CDT, the center of Hurricane Delta was located near
latitude 28.0 North, longitude 93.8 West. Delta is moving toward
the north near 13 mph (20 km/h). A turn toward the north-northeast is
expected this afternoon, followed by a northeastward motion during the
day Saturday. On the forecast track, the center of Delta should make
landfall along the coast of southwestern Louisiana later this afternoon
or this evening, and then move across central and northeastern
Louisiana tonight and Saturday morning.

Maximum sustained winds are near 115 mph (185 km/h) with higher
gusts.  Delta is a category 3 hurricane on the Saffir-Simpson
Hurricane Wind Scale.  Slow weakening is expected before landfall,
with rapid weakening expected after the center moves inland.

Hurricane-force winds extend outward up to 40 miles (65 km) from the
center and tropical-storm-force winds extend outward up to 160 miles
(260 km).   NOAA buoy 42019 located west of the center of Delta
recently reported sustained winds of 49 mph (79 km/h) and a wind
gust of 60 mph (97 km/h).

The latest minimum central pressure reported by a NOAA Hurricane
Hunter aircraft is 962 mb (28.41 inches).

The main concerns will be storm surge or minor coastal flooding along
the coast and tidal lakes, strong and gusty winds, and heavy rainfall.

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

* SURGE:
Protect against life-threatening surge having possible extensive
impacts across lower Terrebonne Parish. 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 outside of the levee
protection system in Lower Lafourche, Lower Jefferson, and western
Lower Plaquemines.

Also, protect against locally hazardous surge having possible limited
impacts across eastern Lower Plaquemines, Lower St. Bernard, eastern
Orleans, lower Livingston, St. John, lower Tangipahoa, St. Tammany,
Hancock, Harrison and Jackson.

* WIND:
Protect against life-threatening wind having possible extensive impacts
across northern Pointe Coupee. 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 most of the remainder of southeast Louisiana
and much of south Mississippi.

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
extensive impacts across areas west of Interstate 55 and along and
north of Interstate 10. Potential impacts include:
    - Major rainfall flooding may prompt many evacuations and rescues.
    - Rivers and tributaries may rapidly overflow their banks in
      multiple places. Small streams, creeks, canals, and ditches may
      become dangerous rivers. Flood control systems and barriers may
      become stressed.
    - Flood waters can enter many structures within multiple
      communities, some structures becoming uninhabitable or washed
      away. Many places where flood waters may cover escape routes.
      Streets and parking lots become rivers of moving water with
      underpasses submerged. Driving conditions become dangerous.
      Many road and bridge closures with some weakened or washed out.

Protect against dangerous rainfall flooding having possible limited
to significant impacts across the remainder of southeast Louisiana and
south 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:

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.

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.

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 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 5 PM CDT, or sooner if conditions
warrant.

$$
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