[Tropical] Hurricane Local Statement
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Sun Sep 12 22:25:44 CDT 2021
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Tropical Storm Nicholas Local Statement Advisory Number 3
National Weather Service Houston/Galveston TX AL142021
1025 PM CDT Sun Sep 12 2021
This product covers Southeast Texas
**TROPICAL STORM NICHOLAS CONTINUES MOVING TOWARDS THE TEXAS GULF COAST...
WATCHES AND WARNINGS EXTENDED NORTHEASTWARD**
NEW INFORMATION
---------------
* CHANGES TO WATCHES AND WARNINGS:
- A Hurricane Watch has been issued for Brazoria Islands and
Coastal Brazoria
- A Tropical Storm Watch has been issued for Northern Liberty
- The Tropical Storm Watch has been upgraded to a Tropical Storm
Warning for Bolivar Peninsula, Chambers, Coastal Galveston,
Coastal Harris, Galveston Island, Inland Galveston, and
Southern Liberty
* CURRENT WATCHES AND WARNINGS:
- A Tropical Storm Watch is in effect for Austin, Colorado, Fort
Bend, Inland Harris, Northern Liberty, Waller, and Wharton
- A Tropical Storm Warning is in effect for Inland Brazoria,
Inland Galveston, and Southern Liberty
- A Storm Surge Warning, Tropical Storm Warning, and Hurricane
Watch are in effect for Brazoria Islands, Coastal Brazoria,
Coastal Jackson, Coastal Matagorda, and Matagorda Islands
- A Tropical Storm Warning and Storm Surge Watch are in effect
for Bolivar Peninsula, Chambers, Coastal Galveston, Coastal
Harris, and Galveston Island
- A Tropical Storm Warning and Hurricane Watch are in effect for
Inland Jackson and Inland Matagorda
* STORM INFORMATION:
- About 470 miles south of Galveston TX or about 420 miles south
of Matagorda TX
- 22.5N 95.5W
- Storm Intensity 40 mph
- Movement North or 360 degrees at 2 mph
SITUATION OVERVIEW
------------------
Tropical Storm Nicholas continues to track north-northwestward
in the southwestern Gulf of Mexico. It is expected to continue
this motion as it approaches the Texas coast over the next 12-24
hours. Further strengthening is expected. It is currently forecast
to make landfall along the middle Texas coast as a tropical storm
late Monday night, though possible intensification to hurricane
strength is not out of the question. As a result, a Hurricane Watch
is now in effect from Port Aransas to San Luis Pass. A Tropical Storm
Warning is now in effect for these areas, as well as further north to High
Island. The Tropical Storm Watch has been expanded to include Northern
Liberty County, as a change in track has increased the potential for
tropical storm winds to impact these locations.
This system has the potential to bring widespread and significant
heavy rainfall to portions of Southeast Texas, particularly along the
coast. Rainfall amounts in excess of 10-15 inches with isolated
higher totals are expected through the end of the day on Tuesday in
some locations. This will result in flash flooding. A Flash Flood
Watch is now in effect along and south of the I-10 corridor.
Additionally, a Storm Surge Watch is now in effect along the SE Texas
Coast. 2-4 feet of storm surge is expected as the system approaches
the coastline early on Tuesday. This will result in areas of coastal
flooding, particularly during high tide. Gusty winds in excess of
50 mph will be possible along the coast as the storm
approaches early on Tuesday, especially around Matagorda Bay.
POTENTIAL IMPACTS
-----------------
* FLOODING RAIN:
Prepare for life-threatening rainfall flooding having possible
extensive impacts across SE TX, particularly along the coast.
Potential impacts include:
- Major rainfall flooding may prompt many evacuations and rescues.
- Rivers and tributaries may rapidly overflow their banks in
multiple places. Small streams, creeks, canals, and ditches may
become dangerous rivers. Flood control systems and barriers may
become stressed.
- Flood waters can enter many structures within multiple
communities, some structures becoming uninhabitable or washed
away. Many places where flood waters may cover escape routes.
Streets and parking lots become rivers of moving water with
underpasses submerged. Driving conditions become dangerous.
Many road and bridge closures with some weakened or washed out.
Prepare for dangerous rainfall flooding having possible limited to
significant impacts across areas further inland.
* SURGE:
Prepare for life-threatening surge having possible significant
impacts along the SE Texas coast. 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.
Elsewhere across Southeast Texas, little to no impact is anticipated.
* WIND:
Prepare for dangerous wind having possible significant impacts along
the SE Texas Coast. 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, causeways, 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 areas further inland.
* TORNADOES:
Prepare for a tornado event having possible limited impacts around
Matagorda Bay. 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.
Elsewhere across Southeast Texas, little to no impact is anticipated.
PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------
* EVACUATIONS:
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 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.
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!
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 Houston/Galveston TX around 4 AM CDT, or sooner if
conditions warrant.
$$
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