[Tropical] Hurricane Local Statement

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Tropical Storm Harvey Local Statement Advisory Number 38
National Weather Service New Orleans LA  AL092017
430 PM CDT Tue Aug 29 2017

This product covers Southeast Louisiana and South Mississippi

...HARVEY CONTINUES TO BRING THREAT OF HEAVY RAIN AND FLASH
FLOODING TO SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI...

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Watch is in effect for Assumption, Lower
      Jefferson, Lower Lafourche, Lower Terrebonne, Upper Lafourche,
      and Upper Terrebonne

* STORM INFORMATION:
    - About 220 miles west of Houma LA or about 260 miles west of
      Grand Isle LA
    - 29.2N 94.3W
    - Storm Intensity 50 mph
    - Movement North-northeast or 30 degrees at 6 mph

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

At 400 PM CDT, Tropical Storm Harvey is moving toward the north-
northeast near 6 mph and is expected to continue on this general
heading through tomorrow. Harvey is expected to move inland over the
northwestern Gulf coast later tonight or early Wednesday. The main
impact across southeast Louisiana and south Mississippi will be heavy
rain and the potential for flash flooding.

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

* FLOODING RAIN:
Prepare for dangerous rainfall flooding having possible significant
impacts across areas generally along and south of the interstate 10
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,
      bayous, 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.

Prepare for locally hazardous rainfall flooding having possible
limited impacts across areas generally north of the interstate 10
corridor.

* WIND:
Prepare for hazardous wind having possible limited impacts across
areas from Baton Rouge south and southeast toward Grand Isle.
Potential impacts in this area 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:
Prepare for locally hazardous surge having possible limited impacts
across immediate coastal areas of Terrebonne, Lafourche, and Jefferson
Parishes, including Grand Isle. Potential impacts in this area
include:
    - Localized inundation with storm surge flooding mainly along
      immediate shorelines and in low-lying spots, or in areas
      farther inland near where higher surge waters move ashore.
    - Sections of near-shore roads and parking lots become overspread
      with surge water. Driving conditions dangerous in places where
      surge water covers the road.
    - Moderate beach erosion. Heavy surf also breaching dunes, mainly
      in usually vulnerable locations. Strong rip currents.
    - Minor to locally moderate damage to marinas, docks, boardwalks,
      and piers. A few small craft broken away from moorings.

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

* TORNADOES:
Prepare for 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
----------------------------------

* OTHER PREPAREDNESS INFORMATION:
Now is the time to check your emergency plan and take necessary
actions to secure your home or business. Deliberate efforts should be
underway to protect life and property. Ensure that your Emergency
Supplies Kit is stocked and ready.

Always heed the advice of local officials and comply with any orders
that are issued. Do not needlessly jeopardize your life or the lives
of others.

Closely monitor NOAA Weather Radio or other local news outlets for
official storm information. Listen for possible changes to the
forecast.

* 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 8 PM CDT, or sooner if conditions
warrant.

$$

95/DM
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