[Tropical] Hurricane Local Statement

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LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-272315-

Hurricane Laura Local Statement Advisory Number 31
National Weather Service New Orleans LA  AL132020
1010 AM CDT Thu Aug 27 2020

This product covers Southeast Louisiana and South Mississippi

**LAURA CONTINUES TO BRING MINOR TO MODERATE IMPACTS TO SOUTHEAST
LOUISIANA AND SOUTHERN MISSISSIPPI**

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

* CHANGES TO WATCHES AND WARNINGS:
    - The Storm Surge Warning has been cancelled for Assumption,
      Lower Jefferson, Lower Plaquemines, Upper Lafourche, and Upper
      Terrebonne

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Warning is in effect for Assumption,
      Iberville, Lower Jefferson, Lower Plaquemines, Pointe Coupee,
      Upper Lafourche, Upper Terrebonne, and West Baton Rouge
    - A Storm Surge Warning and Tropical Storm Warning are in effect
      for Lower Lafourche and Lower Terrebonne

* STORM INFORMATION:
    - About 210 miles northwest of New Orleans LA or about 260 miles
      west-northwest of Gulfport MS
    - 31.9N 93.1W
    - Storm Intensity 75 mph
    - Movement North or 5 degrees at 16 mph

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

Hurricane Laura is currently moving north across north central
Louisiana at 15 mph. This motion will continue today, and Laura will
move over Arkansas tonight, and across the middle Mississippi River
Valley on Friday. Rapid weakening is expected today with Laura
becoming a tropical storm later today.

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

* FLOODING RAIN:
Potential impacts from the flooding rain are still possible across
most of the area. Remain well guarded against life-threatening flood
waters having possible extensive impacts. If realized, these 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.

The flash flooding threat will be greatest wherever trailing bands from
Laura result in prolonged periods of heavy rainfall.

* TORNADOES:
Potential impacts from tornadoes are still unfolding across Southeast
Louisiana and South Mississippi. Remain well braced against a tornado
event having possible limited impacts. If
realized, these 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.

* WIND:
Potential impacts from the main wind event remain possible across
areas generally northwest of Baton Rouge. Remain well sheltered from
hazardous wind having possible limited impacts. If realized,
these impacts include:
    - Damage to porches, awnings, carports, sheds, and unanchored
      mobile homes. Unsecured lightweight objects blown about.
    - Many large tree limbs broken off. A few trees snapped or
      uprooted, but with greater numbers in places where trees are
      shallow rooted. Some fences and roadway signs blown over.
    - A few roads impassable from debris, particularly within urban
      or heavily wooded places. Hazardous driving conditions on
      bridges and other elevated roadways.
    - Scattered power and communications outages.

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

* SURGE:
Potential impacts from the main surge event are now unfolding across
coastal areas mainly west of Port Fourchon. Remain well away from
life-threatening surge having possible significant impacts. If
realized, these impacts 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.

Potential impacts from the main surge event are also now unfolding
across the remainder of coastal southeast Louisiana and Mississippi.
Remain well away from locally hazardous surge having possible
limited impacts.

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

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

* EVACUATIONS:
Do not enter evacuated areas until officials have given the all clear
to return.

* OTHER PREPAREDNESS INFORMATION:
If a tornado warning is issued for your area, quickly move to the
safest place within your shelter. Protect your head and body.

* 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 1 PM CDT, or sooner if conditions
warrant.

$$
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