[Tropical] Hurricane Local Statement

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Hurricane Delta Local Statement Advisory Number 15
National Weather Service New Orleans LA  AL262020
411 AM CDT Thu Oct 8 2020

This product covers Southeast Louisiana and South Mississippi

**DELTA MOVING NORTHWESTWARD OVER THE GULF OF MEXICO**

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

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

* STORM INFORMATION:
    - About 460 miles south-southwest of New Orleans LA or about 430
      miles south of Houma LA
    - 23.4N 91.8W
    - Storm Intensity 100 mph
    - Movement Northwest or 305 degrees at 15 mph

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

At 400 AM CDT, Hurricane Delta was located near latitude
23.4 North, longitude 91.8 West. Delta is moving
toward the northwest near 15 mph, and this motion with a
a reduction in forward speed is expected today. A turn to the north
is forecast to occur by late tonight, followed by a north-
northeastward motion by Friday night. On the forecast track, the
center of Delta will move over the central Gulf of Mexico today, and
move inland within the hurricane warning area Friday afternoon or
Friday night.

Maximum sustained winds are near 100 mph with higher gusts.
Strengthening is forecast, and Delta is expected to become
a major hurricane again by tonight.  Some weakening is forecast
when Delta approaches the northern Gulf coast on Friday.

The main concerns will be storm surge along the coast and tidal lakes,
strong and gusty winds, a few tornadoes, and heavy rainfall.

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

* SURGE:
Protect against life-threatening surge having possible devastating
impacts across coastal areas of Lower Terrebonne Parish. Potential
impacts in this area include:
    - Widespread deep inundation, with storm surge flooding greatly
      accentuated by powerful battering waves. Structural damage to
      buildings, with many washing away. Damage greatly compounded
      from considerable floating debris. Locations may be
      uninhabitable for an extended period.
    - Near-shore escape routes and secondary roads washed out or
      severely flooded. Flood control systems and barriers may become
      stressed.
    - Extreme beach erosion. New shoreline cuts possible.
    - Massive damage to marinas, docks, boardwalks, and piers.
      Numerous small craft broken away from moorings with many lifted
      onshore and stranded.

Also, protect against life-threatening surge having possible
significant to extensive impacts across coastal areas outside of the
levee protection system in Lower Lafourche, Lower Jefferson, Lower
Plaquemines, Lower St. Bernard, Orleans, St. Tammany, and Tangipahoa
Parishes in Louisiana and coastal areas of Hancock and Harrison
Counties in Mississippi.

Also, protect against locally hazardous surge having possible limited
impacts across coastal areas of Jackson County in Mississippi, and
nearshore areas of Lake Pontchartrain and Lake Maurepas in Livingston,
St. John the Baptist, St. Charles, Upper Jefferson, and Orleans
Parishes.

* WIND:
Protect against life-threatening wind having possible extensive
impacts across portions of Pointe Coupee 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, protect against dangerous wind having possible limited to
significant impacts across the remainder of Southeast Louisiana
and Southern Mississippi.

* FLOODING RAIN:
Protect against dangerous rainfall flooding having possible
significant impacts across portions of Southeast Louisiana and
Southwest Mississippi generally along and to the west of the I-55
corridor. 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 the remainder of Southeast Louisiana and
Southern 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.

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 10 AM CDT, or sooner if conditions
warrant.

$$
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