[Tropical] Hurricane Local Statement
EMWIN Server
emwin at nashvilleweather.net
Sun Aug 23 04:50:28 CDT 2020
WTUS84 KLIX 230950
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LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-231800-
Tropical Storm Marco Local Statement Advisory Number 12
National Weather Service New Orleans LA AL142020
450 AM CDT Sun Aug 23 2020
This product covers Southeast Louisiana and South Mississippi
**HURRICANE AND STORM SURGE WARNINGS ISSUED FOR PORTIONS OF THE
NORTHERN GULF COAST**
NEW INFORMATION
---------------
* CHANGES TO WATCHES AND WARNINGS:
- A Tropical Storm Warning has been issued for Ascension,
Livingston, Orleans, Southern Tangipahoa, St. Charles, St.
James, St. John The Baptist, St. Tammany, Upper Jefferson,
Upper Plaquemines, and Upper St. Bernard
- The Hurricane Watch has been upgraded to a Tropical Storm
Warning for Hancock, Harrison, and Jackson
- The Hurricane Watch has been upgraded to a Hurricane Warning
for Assumption, Lower Jefferson, Lower Lafourche, Lower
Plaquemines, Lower St. Bernard, Lower Terrebonne, Upper
Lafourche, and Upper Terrebonne
* CURRENT WATCHES AND WARNINGS:
- A Tropical Storm Watch is in effect for Amite, East Baton
Rouge, East Feliciana, Iberville, Northern Tangipahoa, Pearl
River, Pike, Pointe Coupee, St. Helena, Walthall, Washington,
West Baton Rouge, West Feliciana, and Wilkinson
- A Hurricane Warning and Storm Surge Watch are in effect for
Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St.
Bernard, and Lower Terrebonne
- A Tropical Storm Warning and Hurricane Watch are in effect for
Ascension and St. James
- A Hurricane Warning is in effect for Assumption, Upper
Lafourche, and Upper Terrebonne
- A Tropical Storm Warning and Storm Surge Watch are in effect
for Hancock, Harrison, and Jackson
- A Tropical Storm Warning, Storm Surge Watch, and Hurricane
Watch are in effect for Livingston, Orleans, Southern
Tangipahoa, St. Charles, St. John The Baptist, St. Tammany,
Upper Jefferson, Upper Plaquemines, and Upper St. Bernard
* STORM INFORMATION:
- About 480 miles south-southeast of New Orleans LA or about 470
miles south-southeast of Houma LA
- 23.7N 87.0W
- Storm Intensity 70 mph
- Movement North-northwest or 335 degrees at 13 mph
SITUATION OVERVIEW
------------------
Tropical Storm Marco is forecast to strengthen to a hurricane as it
moves across the Gulf of Mexico today and approach southeast
Louisiana and southern Mississippi tonight and Monday.
POTENTIAL IMPACTS
-----------------
* WIND:
Protect against life-threatening wind having possible extensive
impacts along the southeast Louisiana coastal parishes.
Potential impacts in this area include:
- Considerable roof damage to sturdy buildings, with some having
window, door, and garage door failures leading to structural
damage. Mobile homes severely damaged, with some destroyed.
Damage accentuated by airborne projectiles. Locations may be
uninhabitable for weeks.
- Many large trees snapped or uprooted along with fences and
roadway signs blown over.
- Some roads impassable from large debris, and more within urban
or heavily wooded places. Several bridges, causeways, and
access routes impassable.
- Large areas with power and communications outages.
Also, protect against dangerous wind having possible limited to
significant impacts across Metro New Orleans, Metro Baton Rouge,
Northshore and portions of coastal Mississippi.
* SURGE:
Protect against life-threatening surge having possible significant
impacts across coastal areas of southeast Louisiana. Potential
impacts in this area 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.
Also, protect against locally hazardous surge having possible limited
impacts across coastal areas of Mississippi and areas along the
shores of Lakes Pontchartrain and Maurepas.
Elsewhere across Southeast Louisiana and South Mississippi, little to
no impact is anticipated.
* FLOODING RAIN:
Protect against dangerous rainfall flooding having possible
significant impacts across portions of southeast Louisiana, southwest
Mississippi and coastal Mississippi. 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.
Protect against locally hazardous rainfall flooding having possible
limited impacts across the remainder of southwest Mississippi and
southeast Louisiana.
* TORNADOES:
Protect against a tornado event having possible limited impacts
across Southeast Louisiana and South Mississippi, mainly to the
south of Interstate 10. 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
----------------------------------
* EVACUATIONS:
WATCH/WARNING PHASE - Listen to local official for recommended
preparedness actions, including possible evacuation. If ordered to
evacuate, do so immediately.
WATCH/WARNING PHASE - If evacuating, leave with a destination in mind
and allow extra time to get there. Take your emergency supplies kit.
Gas up your vehicle ahead of time.
WATCH/WARNING PHASE - Let others know where you are going prior to
departure. Secure loose items and pets in the car, and avoid
distracted driving.
WATCH/WARNING PHASE - If evacuating, follow designated evacuation
routes. Seek traffic information on roadway signs, the radio, and
from official sources.
* OTHER PREPAREDNESS INFORMATION:
Now is the time to complete all preparations to protect life and
property in accordance with your emergency plan. Ensure you are in a
safe location before the onset of strong winds or possible flooding.
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.
When securing your property, outside preparations should be concluded
as soon as possible before conditions deteriorate. The onset of
strong gusty winds or flooding can cause certain preparedness
activities to become unsafe.
Be sure to let friends and family members know of your intentions for
weathering the storm and your whereabouts. Have someone located away
from the threatened area serve as your point of contact. Share vital
contact information with others. Keep cell phones handy and charged.
Check on those who may not be fully aware of the situation or who are
unable to make personal preparations.
If you are a visitor, know the name of the county or parish in which
you are located and where it is relative to current watches and
warnings. If staying at a hotel, ask the management staff about their
onsite disaster plan. Listen for evacuation orders, especially
pertaining to area visitors.
Storm surge is the leading killer associated with tropical storms and
hurricanes! Make sure you are in a safe area away from the surge
zone. Even if you are not in a surge-prone area, you could find
yourself cutoff by flood waters during and after the storm. Heed
evacuation orders issued by the local authorities.
Rapidly rising flood waters are deadly. If you are in a flood-prone
area, consider moving to higher ground. Never drive through a flooded
roadway. Remember, turn around don't drown!
If a Tornado Warning is issued for your area, be ready to shelter
quickly, preferably away from windows and in an interior room not
prone to flooding. If driving, scan the roadside for quick shelter
options.
If in a place that is vulnerable to high wind, such as near large
trees, a manufactured home, upper floors of a high-rise building, or
on a boat, consider moving to a safer shelter before the onset of
strong winds or flooding.
Closely monitor weather.gov, NOAA Weather radio or local news outlets
for official storm information. Be ready to adapt to possible changes
to the forecast. Ensure you have multiple ways to receive weather
warnings.
* 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 11 AM CDT, or sooner if conditions
warrant.
$$
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