[Tropical] Hurricane Local Statement

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Tropical Storm Hanna Local Statement Advisory Number 6
National Weather Service Brownsville TX  AL082020
404 AM CDT Fri Jul 24 2020

This product covers The Rio Grande Valley and Deep South Texas

**HEAVY RAINFALL AND DANGEROUS FLASH FLOODING EXPECTED THIS WEEKEND**

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 300 miles east of South Padre Island TX or about 310
      miles east of Port Mansfield TX
    - 26.7N 92.4W
    - Storm Intensity 40 mph
    - Movement West-northwest or 290 degrees at 9 mph

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

Tropical Storm Hanna has continued to show a gradual increase in
convection and organization over the last several hours. Hanna is
expected to gradually strengthen and move west-northwestward up until
landfall on Saturday along the lower to middle Texas coast. After
making landfall, Hanna is anticipated to turn west- southwestward
across Deep South Texas before crossing the Rio Grande River and into
northern Mexico while gradually weakening with time. Heavy rainfall
along with dangerous flash flooding remains the primary impact with
rainfall amounts of 4 to 8 inches, locally 12+ inches expected.
Additionally, tropical storm winds are expected, especially near where
the center of circulation passes. Elsewhere, squalls will produce the
potential for wind gusts in excess of tropical storm force. Coastal
flooding is also a concern with 2 feet of inundation possible.

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

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
extensive impacts across the King Ranch. 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.

Protect against dangerous rainfall flooding having possible
significant impacts across the rest of Deep South Texas.

* WIND:
Protect against dangerous wind having possible significant impacts
across the northern ranchlands. 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 rest of Deep South Texas.

* 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 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.

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 10 AM CDT, or sooner if conditions
warrant.

$$
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