[Tropical] Hurricane Local Statement

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Tropical Storm Hanna Local Statement Advisory Number 8
National Weather Service Brownsville TX  AL082020
417 PM CDT Fri Jul 24 2020

This product covers The Rio Grande Valley and Deep South Texas

 **HANNA STRENGTHENING AND EXPECTED TO PRODUCE DANGEROUS FLOODING**

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Warning is in effect for Brooks, Coastal
      Cameron, Coastal Kenedy, Coastal Willacy, Inland Kenedy, Inland
      Willacy, Jim Hogg, and Northern Hidalgo

* STORM INFORMATION:
    - About 200 miles east-northeast of South Padre Island TX or
      about 190 miles east of the Mouth of Baffin Bay
    - 27.3N 94.3W
    - Storm Intensity 50 mph
    - Movement West or 275 degrees at 10 mph

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


Tropical Storm Hanna continues to track steadily westward towards the
middle/Lower Texas coast. Slight strengthening has taken place today
with peak winds near the center at 50 mph. Convection continues to
favor the southern and eastern sides of the cyclone with some increase
recently seen around the center. Gradual strengthening is still
expected up to landfall early Saturday afternoon near Baffin Bay or
extreme northern Kenedy County. Hanna is still expected turn
west-southwestward across Deep South Texas before crossing the Rio
Grande River and into northern Mexico later Sunday steadily weakening
with time. A Flash Flood watch remains in effect for all of Deep South
Texas and the Rio Grande Valley this weekend. Total rainfall
accumulations from late tonight through Monday morning may range from
5 to 10 inches with local amounts up to 15 inches or greater.

Additionally, tropical storm winds are expected, especially near or
just south of the center of circulation passes. Elsewhere, squalls
will produce the potential for wind gusts in excess of tropical storm
force. Coastal flooding is also expected concern with 2 feet of
inundation possible on either side of Padre Island including near the
city of South Padre Island.

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

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
extensive impacts across The Rio Grande Valley and Deep South Texas.

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, arroyos, and
      ditches may become dangerous rivers. In mountain areas,
      destructive runoff may run quickly down valleys while
      increasing susceptibility to rockslides and mudslides. 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.

* WIND:
Protect against dangerous wind having possible significant impacts
across across Kenedy and Brooks Counties.

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, protect against hazardous wind having possible limited impacts
across the remainder of Deep South Texas.

* SURGE:
Prepare for locally hazardous surge having possible limited impacts
across the Lower Texas coast including the west side of the Laguna
Madre this includes the city of South Padre Island.

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 parking lots become overspread
      with 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 to locally moderate 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.

* TORNADOES:
Prepare for a tornado event having possible limited impacts across The
coastal counties of Deep South Texas and the Rio Grande Valley.

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, isolated
tornadoes are possible.

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.

It is important to remain calm, informed, and focused during an
emergency. Be patient and helpful with those you encounter.

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 1030 PM CDT, or sooner if conditions
warrant.

$$
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