[Tropical] Hurricane Local Statement

EMWIN Server emwin at nashvilleweather.net
Tue Aug 29 16:48:50 CDT 2017


WTUS84 KLCH 292148
HLSLCH
LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-300600-

Tropical Storm Harvey Local Statement Advisory Number 38
National Weather Service Lake Charles LA  AL092017
448 PM CDT Tue Aug 29 2017

This product covers SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS

**HARVEY CRAWLING TOWARD THE COAST DUMPING CATASTROPHIC RAINS OVER
SOUTHEASTERN TEXAS AND SOUTHWESTERN LOUISIANA**

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

* CHANGES TO WATCHES AND WARNINGS:
    - A Tropical Storm Warning has been issued for Calcasieu,
      Jefferson Davis, and Orange
    - The Storm Surge Watch has been upgraded to a Storm Surge
      Warning for East Cameron, Iberia, St. Mary, Vermilion, and West
      Cameron

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Warning is in effect for Calcasieu, Jefferson
      Davis, Lower St. Martin, and Orange
    - A Tropical Storm Warning and Storm Surge Watch are in effect
      for Jefferson
    - A Storm Surge Warning and Tropical Storm Warning are in effect
      for East Cameron, Iberia, St. Mary, Vermilion, and West Cameron

* STORM INFORMATION:
    - About 70 miles southwest of Cameron LA or about 190 miles west
      of Morgan City LA
    - 29.2N 94.3W
    - Storm Intensity 50 mph
    - Movement North-northeast or 30 degrees at 6 mph

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

As of 4 PM CDT, Tropical Storm Harvey continues to slowly meander off
the upper Texas coast near Galveston. Harvey is expected to continue
slowly moving toward the north-northeast tonight, and is forecast to
move inland near Sabine Pass late this evening into overnight.

Widespread catastrophic flooding will continue across southeast Texas
with the potential for flash flooding to increase across portions of
southwest and south central Louisiana through Wednesday. Areas of rain
with embedded heavier showers and thunderstorms north and northeast of
the center will continue to develop and track northward across the
area today. Isolated tornadoes are also possible, especially over the
coastal counties and parishes.

Tropical storm force winds will continue to spread across coastal
Southeast Texas and Southwest Louisiana during the evening and
overnight as the center nears the coast.

Storm surge of 2 to 4 feet above ground level can be expected along the
coast from Holly Beach east to Morgan City, with surge of 1 to 3 feet
above ground level expected west of Holly Beach through Wednesday.
Surge will be highest around the times of astronomical high tides.

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

* FLOODING RAIN:
Potential impacts from the flooding rain are still unfolding across
Southeast Texas and Southwest Louisiana. Remain well guarded against
life-threatening flood waters having additional catastrophic impacts.
If realized, these impacts include:
    - Extreme rainfall flooding may prompt numerous evacuations and
      rescues.
    - Rivers and tributaries may overwhelmingly overflow their banks
      in many places with deep moving water. Small streams, creeks,
      canals, and ditches may become raging rivers. Flood control
      systems and barriers may become stressed.
    - Flood waters can enter numerous structures within multiple
      communities, some structures becoming uninhabitable or washed
      away. Numerous places where flood waters may cover escape
      routes. Streets and parking lots become rivers of raging water
      with underpasses submerged. Driving conditions become very
      dangerous. Numerous road and bridge closures with some weakened
      or washed out.

Potential impacts from the flooding rain are still unfolding across
Central and South Central Louisiana. Remain well guarded against life-
threatening flood waters having possible limited to devastating
impacts.

* SURGE:
Potential impacts from the main surge event are now unfolding across
southwest and south central Louisiana. Remain well away from life-
threatening surge having additional significant impacts. If realized,
these impacts include:
    - Areas of inundation with storm surge flooding accentuated by
      waves. Damage to non-elevated structures is possible.
    - Sections of 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, 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 southeast Texas. Remain well away from locally hazardous surge
having additional limited impacts.

* WIND:
Potential impacts from the main wind event are now unfolding across
southwest Louisiana and southeast Texas. Remain well sheltered from
hazardous wind having additional 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.

* TORNADOES:
Potential impacts from tornadoes are still unfolding across southwest
Louisiana and southeast Texas. Remain well braced against a tornado
event having additional 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.

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

* EVACUATIONS:
Do not return to evacuated areas until hazardous winds diminish and
flood waters abate.

* OTHER PREPAREDNESS INFORMATION:
Check-in with your emergency points of contact among family, friends,
and workmates. Inform them of your status and well-being. Let them
know how you intend to ride out the storm and when you plan to
check-in again.

Keep cell phones well charged and handy. Also, cell phone chargers
for automobiles can be helpful after the storm. Locate your chargers
and keep them with your cell phone.

* 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 Lake Charles LA around 7 PM CDT, or sooner if conditions
warrant.

$$
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