[Tropical] Hurricane Local Statement
EMWIN Server
emwin at nashvilleweather.net
Sun Aug 29 02:20:42 CDT 2021
WTUS84 KLIX 290720
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LAZ034>037-039-046>050-056>061-063>072-075>078-MSZ068>071-077-080>082-291530-
Hurricane Ida Local Statement Intermediate Advisory Number 11A
National Weather Service New Orleans LA AL092021
220 AM CDT Sun Aug 29 2021
This product covers Southeast Louisiana and South Mississippi
**IDA FORECAST TO STRENGTHEN RAPIDLY BEFORE LANDFALL**
NEW INFORMATION
---------------
* CHANGES TO WATCHES AND WARNINGS:
- None
* CURRENT WATCHES AND WARNINGS:
- A Storm Surge Warning and Hurricane Warning are in effect for
Ascension, Assumption, Eastern Orleans, Iberville, Livingston,
Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St.
Bernard, Lower Terrebonne, Northwest St. Tammany, Southeast St.
Tammany, Southern Tangipahoa, St. Charles, St. James, St. John
The Baptist, Upper Jefferson, Upper Lafourche, Upper
Plaquemines, Upper St. Bernard, and Upper Terrebonne
- A Storm Surge Warning and Tropical Storm Warning are in effect
for Hancock, Harrison, and Jackson
- A Hurricane Warning is in effect for East Baton Rouge, East
Feliciana, Northern Tangipahoa, Pointe Coupee, St. Helena,
Washington, West Baton Rouge, West Feliciana, and Western
Orleans
- A Tropical Storm Warning is in effect for Amite, Pearl River,
Pike, Walthall, and Wilkinson
* STORM INFORMATION:
- About 190 miles south-southeast of New Orleans LA or about 190
miles south of Gulfport MS
- 27.6N 88.7W
- Storm Intensity 115 mph
- Movement Northwest or 320 degrees at 15 mph
SITUATION OVERVIEW
------------------
Hurricane Ida continues to strengthen and is now a Category 4
hurricane closing in on the Louisiana coastline. Ida is expected to
make landfall along the southeast Louisiana coast around noon today
bringing catastrophic storm surge, winds, and flash flooding to a
large portion of Southeast Louisiana and Southwest and Coastal
Mississippi. The window for evacuation is becoming very small and
all preparations should be completed. If evacuation orders have been
issued for your area and you have the means to leave, leave!
POTENTIAL IMPACTS
-----------------
* SURGE:
Protect against life-threatening surge having possible catastrophic
impacts across all of coastal southeast Louisiana and portions of
coastal Mississippi west of Biloxi. These life-threatening impacts
are expected to occur today into Monday. Potential impacts in this
area include:
- Widespread deep inundation, with storm surge flooding greatly
accentuated by powerful battering waves. Structural damage to
buildings, with many washing away. Damage greatly compounded
from considerable floating debris. Locations may be
uninhabitable for an extended period.
- Near-shore escape routes and secondary roads washed out or
severely flooded. Flood control systems and barriers may become
stressed.
- Extreme beach erosion. New shoreline cuts possible.
- Massive damage to marinas, docks, boardwalks, and piers.
Numerous small craft broken away from moorings with many lifted
onshore and stranded.
Also, protect against life-threatening surge having possible
significant to devastating impacts across portions of coastal
Mississippi east of Biloxi and along the shores of Lake Pontchartrain
outside of the hurricane levee protection and Lake Maurepas. These
life-threatening impacts are expected to occur today into Monday.
* WIND:
Protect against life-threatening wind having possible devastating
impacts across portions of Southeast Louisiana including metro New
Orleans, metro Baton Rouge, Hammond, Grand Isle, and the Houma
metropolitan area. These life-threatening wind impacts are expected
to begin overnight along the Louisiana coast and then spread inland
to the New Orleans, Houma, and Baton Rouge metro areas on today.
Potential impacts in this area include:
- Structural damage to sturdy buildings, some with complete roof
and wall failures. Complete destruction of mobile homes. Damage
greatly accentuated by large airborne projectiles. Locations
may be uninhabitable for weeks or months.
- Numerous large trees snapped or uprooted along with fences and
roadway signs blown over.
- Many roads impassable from large debris, and more within urban
or heavily wooded places. Many bridges, causeways, and access
routes impassable.
- Widespread power and communications outages.
Also, protect against life-threatening wind having possible limited
to extensive impacts across portions of Southeast Louisiana to the
east of the I-55 corridor. This includes the Northshore as well as
all of Coastal and Southwest Mississippi. These life- threatening
wind impacts are expected to occur as early as today.
* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
devastating impacts across most of Southeast Louisiana including the
Baton Rouge, New Orleans, and Houma metro areas and across portions
of Southwest Mississippi along the I-55 corridor. These
life-threatening rainfall impacts are expected to begin as early as
tonight and continue through Monday. Potential 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.
Protect against life-threatening rainfall flooding having possible
extensive impacts across the remainder of Southeast Louisiana,
Southwest Mississippi, and Coastal Mississippi. These
life-threatening impacts are expected to begin as early as tonight
and continue through Monday.
* TORNADOES:
Protect against 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
----------------------------------
* EVACUATIONS:
The time is to prepare and evacuate is coming to an end quickly. Do
so now or shelter in place. Do not enter evacuated areas until
officials have given the all clear to return.
* OTHER PREPAREDNESS INFORMATION:
Keep cell phones well charged. Cell phone chargers for automobiles
can be helpful, but be aware of your risk for deadly carbon monoxide
poisoning if your car is left idling in a garage or other poorly
ventilated area.
It is important to remain calm, informed, and focused during an
emergency. Be patient and helpful with those you encounter.
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.
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 430 AM CDT, or sooner if conditions
warrant.
$$
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