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Potential Tropical Cyclone Nine Local Statement Advisory Number 1
National Weather Service Brownsville TX AL092023
1012 AM CDT Mon Aug 21 2023
This product covers The Rio Grande Valley and Deep South Texas
**TROPICAL STORM WARNING ISSUED FOR PORTIONS OF SOUTH TEXAS**
NEW INFORMATION
---------------
* CHANGES TO WATCHES AND WARNINGS:
- A Tropical Storm Warning has been issued for Cameron Island,
Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland
Kenedy, Inland Willacy, Kenedy Island, and Willacy Island
* CURRENT WATCHES AND WARNINGS:
- A Tropical Storm Warning is in effect for Cameron Island,
Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland
Kenedy, Inland Willacy, Kenedy Island, and Willacy Island
* STORM INFORMATION:
- About 460 miles east of South Padre Island TX or about 480
miles east of Port Mansfield TX
- 25.0N 89.9W
- Storm Intensity 30 mph
- Movement West or 275 degrees at 16 mph
SITUATION OVERVIEW
------------------
At 10 AM CDT, Potential Tropical Cyclone Nine continues to move
westward across the Gulf of Mexico towards the lower Texas coast. This
system could become a Tropical Storm by early Tuesday morning.
Tropical Storm conditions will be possible along the Islands, Coastal
Cameron and into Willacy and Kenedy counties beginning tonight into
Tuesday. Isolated to scattered heavy rainfall and gusty winds will be
possible in any rain band. Isolated tornadoes, especially across the
northern Ranchlands are possible. Minor coastal flooding or run-up to
the dunes is likely, especially around high tide at 5:38 AM Tuesday.
POTENTIAL IMPACTS
-----------------
* FLOODING RAIN:
Protect against dangerous rainfall flooding having possible
significant impacts across The Rio Grande Valley and Deep South
Texas. Potential impacts include:
- Moderate rainfall flooding may prompt several evacuations and
rescues.
- Arroyos and larger creeks may quickly become swollen with swift
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.
* WIND:
Protect against hazardous wind having possible limited impacts across
all coastal zones into inland Willacy and inland Kenedy counties.
Potential impacts in this area include:
- Damage to porches, awnings, carports, sheds, and unanchored
mobile homes. Unsecured lightweight objects blown about.
- Many large tree limbs broken off. A few trees snapped or
uprooted, but with greater numbers in places where trees are
shallow rooted. Some fences and roadway signs blown over.
- A few roads impassable from debris, particularly within urban
or heavily wooded places. Hazardous driving conditions on
bridges and other elevated roadways.
- Scattered power and communications outages.
Elsewhere across The Rio Grande Valley and Deep South Texas, little
to no impact is anticipated.
* TORNADOES:
Protect against a tornado event having possible limited impacts across
the northern Ranchlands. 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 The Rio Grande Valley and Deep South Texas, little
to no impact is anticipated.
* SURGE:
Protect against locally hazardous surge having possible limited impacts
along the lower Texas coast. Potential impacts in this area include:
- Localized inundation with storm surge flooding mainly along
immediate shorelines and in low-lying spots, or in areas
farther inland near where higher surge waters move ashore.
- Sections of near-shore roads and exposed parking lots could
become covered with some surge water. Driving conditions
dangerous in places where surge water covers the road.
- Moderate beach erosion. Heavy surf also breaching dunes, mainly
in usually vulnerable locations. Strong rip currents.
- Minor damage to marinas, docks, boardwalks, and piers. A few
small craft broken away from moorings.
Elsewhere across The Rio Grande Valley and Deep South Texas, little
to no impact is anticipated.
PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------
* 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.
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.
If you are a visitor, be sure to know the name of the city or town in
which you are staying and the name of the county in which it resides.
Listen for these locations in local news updates. Pay attention for
instructions from 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!
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 Brownsville TX around 4 PM CDT, or sooner if conditions
warrant.
$$
AM
