[Tropical] Hurricane Local Statement

EMWIN Server emwin at nashvilleweather.net
Sun Aug 23 10:29:45 CDT 2020


WTUS84 KLCH 231529
HLSLCH
LAZ029-033-044-045-052>055-232330-

Tropical Storm Marco Local Statement Advisory Number 13
National Weather Service Lake Charles LA  AL142020
1029 AM CDT Sun Aug 23 2020

This product covers Southwest Louisiana and Southeast Texas

**MARCO EXPECTED TO BECOME A HURRICANE LATER TODAY**

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Storm Surge Watch and Hurricane Watch are in effect for
      Iberia, St. Mary, and Vermilion
    - A Tropical Storm Watch is in effect for Avoyelles, Lafayette,
      Lower St. Martin, St. Landry, and Upper St. Martin
    - A Storm Surge Watch is in effect for East Cameron and West
      Cameron

* STORM INFORMATION:
    - About 510 miles southeast of Cameron LA or about 460 miles
      southeast of Intracoastal City LA or about 420 miles southeast
      of Morgan City LA or about 480 miles southeast of Lafayette LA
    - 24.7N 87.3W
    - Storm Intensity 70 mph
    - Movement North-northwest or 340 degrees at 14 mph

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

Marco is forecast to continue moving north-northwestward across the
central Gulf of Mexico today and will approach southeastern Louisiana
on Monday. A gradual turn toward the west-northwest with a decrease in
forward speed is expected after Marco moves inland later on Monday.

Some strengthening is anticipated and Marco is forecast to become a
hurricane later today and be at hurricane strength when it approaches
the northern Gulf Coast on Monday. Rapid weakening is expected after
Marco moves inland.

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

* SURGE:
Prepare for life-threatening surge having possible significant
impacts across VERMILION BAY AND LOWER ATCHAFALAYA BASIN. Potential
impacts in this area 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.

Elsewhere across Southwest Louisiana and Southeast Texas, little to
no impact is anticipated.

* WIND:
Prepare for dangerous wind having possible significant impacts across
SOUTH CENTRAL LOUISIANA. Potential impacts in this area include:
    - Some damage to roofing and siding materials, along with damage
      to porches, awnings, carports, and sheds. A few buildings
      experiencing window, door, and garage door failures. Mobile
      homes damaged, especially if unanchored. Unsecured lightweight
      objects become dangerous projectiles.
    - Several large trees snapped or uprooted, but with greater
      numbers in places where trees are shallow rooted. Several
      fences and roadway signs blown over.
    - Some roads impassable from large debris, and more within urban
      or heavily wooded places. A few bridges and access routes
      impassable.
    - Scattered power and communications outages, but more prevalent
      in areas with above ground lines.

Also, prepare for hazardous wind having possible limited impacts
across EAST CENTRAL LOUISIANA.

* FLOODING RAIN:
Prepare for locally hazardous rainfall flooding having possible
limited impacts across Southwest Louisiana and Southeast Texas.
Potential impacts include:
    - Localized rainfall flooding may prompt a few evacuations.
    - Rivers and tributaries may quickly rise with swifter currents.
      Small streams, creeks, canals, and ditches may become swollen
      and overflow in spots.
    - Flood waters can enter a few structures, especially in usually
      vulnerable spots. A few places where rapid ponding of water
      occurs at underpasses, low-lying spots, and poor drainage
      areas. Several storm drains and retention ponds become
      near-full and begin to overflow. Some brief road and bridge
      closures.

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

* EVACUATIONS:
WATCH/WARNING PHASE - Listen to local official for recommended
preparedness actions, including possible evacuation. If ordered to
evacuate, do so immediately.

* OTHER PREPAREDNESS INFORMATION:
Now is the time to check your emergency plan and emergency supplies
kit and take necessary actions to protect your family and secure your
home or business.

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

Check on those who may not be fully aware of the situation or who are
unable to make personal preparations.

Closely monitor weather.gov, NOAA Weather Radio and 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 Lake Charles LA around 5 PM CDT, or sooner if conditions
warrant.

$$
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