[Tropical] Hurricane Local Statement

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WTUS84 KLCH 222248
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LAZ029-033-044-045-052>055-230700-

Tropical Storm Marco Local Statement Advisory Number 10
National Weather Service Lake Charles LA  AL142020
548 PM CDT Sat Aug 22 2020

This product covers Southwest Louisiana and Southeast Texas

...BIG CHANGES TO THIS AFTERNOON'S FORECAST FOR MARCO...
...STORM SURGE AND HURRICANE WATCHES ISSUED FOR THE NORTHERN GULF
COAST...

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

* CHANGES TO WATCHES AND WARNINGS:
    - A Storm Surge Watch and Hurricane Watch have been issued for
      Iberia, St. Mary, and Vermilion
    - A Tropical Storm Watch has been issued for Avoyelles,
      Lafayette, Lower St. Martin, St. Landry, and Upper St. Martin
    - A Storm Surge Watch has been issued for East Cameron and West
      Cameron

* 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 670 miles southeast of Intracoastal City LA or about 640
      miles south-southeast of Morgan City LA
    - 21.9N 85.7W
    - Storm Intensity 65 mph
    - Movement North-northwest or 340 degrees at 13 mph

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

At 400 PM CDT, the center of Tropical Storm Marco was located near
latitude 21.9 North, longitude 85.7 West. Marco is moving toward the
north-northwest near 13 mph. Marco is expected to continue moving
toward the north-northwest across the central Gulf of Mexico on Sunday
and is forecast to reach the northern Gulf coast on Monday. After
moving inland, Marco is expected to slow down and turn toward the
northwest and west-northwest Monday night and Tuesday, moving across
southern Louisiana into east Texas.

Maximum sustained winds are near 65 mph with higher gusts. Strengthening
is forecast during the next day or two, and Marco is expected to
become a hurricane tonight or on Sunday. Marco is likely to still be at
or near hurricane strength when it reaches the northern Gulf coast on
Monday. Weakening is forecast to occur while the center moves farther
inland Monday night and Tuesday.

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

* 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 Central Louisiana.

* SURGE:
Prepare for life-threatening surge having possible significant
impacts across South Central Louisiana. 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.

* FLOODING RAIN:
Prepare for dangerous rainfall flooding having possible significant
impacts across Central and South Central Louisiana. 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.

Prepare for locally hazardous rainfall flooding having possible
limited impacts across Southeast Texas.

* TORNADOES:
Little to no impacts are anticipated at this time across Southwest
Louisiana and Southeast Texas.

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.

* 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.

When making safety and preparedness decisions, do not focus on the
exact forecast track since hazards such as flooding rain, damaging
wind gusts, storm surge, and tornadoes extend well away from the
center of the storm.


NEXT UPDATE
-----------

The next local statement will be issued by the National Weather
Service in Lake Charles LA around 11 PM, or sooner if conditions
warrant.

$$
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