[Tropical] Hurricane Local Statement

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WTUS84 KEWX 261810
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TXZ173-189>194-205>209-220>225-270215-

Tropical Storm Harvey Local Statement Intermediate Advisory Number 25A
National Weather Service Austin/San Antonio TX  AL092017
110 PM CDT Sat Aug 26 2017

This product covers SOUTH CENTRAL TEXAS

**Hurricane Harvey expected to bring a life-threatening and
 catastrophic heavy rainfall event east of Interstate 35 and Interstate
 37**

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

* CHANGES TO WATCHES AND WARNINGS:
    - The Hurricane Warning has been cancelled and a Tropical Storm
      Warning has been issued for De Witt and Karnes

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Warning is in effect for Atascosa, Bastrop,
      Bexar, Caldwell, Comal, De Witt, Fayette, Gonzales, Guadalupe,
      Hays, Karnes, Lavaca, and Wilson

* STORM INFORMATION:
    - About 80 miles south of Austin TX or about 20 miles west of
      Cuero TX
    - 29.1N 97.6W
    - Storm Intensity 70 mph
    - Movement North-northwest or 340 degrees at 2 mph

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

The center of Harvey has moved into DeWitt County, and it has weakened
to tropical storm strength. The forward motion remains slow.
Confidence remains high in a life-threatening, catastrophic rainfall
event taking place across much of South Central Texas along and east of
Interstates 35 and 37.

Only minor changes have been made to the rainfall forecast with this
update. A range of 5 to 15 inches is possible along the Interstate
35 corridor due to the large drop off in rainfall amounts on the west
side of Harvey. The upper end of that estimate will likely be farther
north, including the city of Austin. East of the Interstate
35 corridor, we are still anticipating 10-20 inches with isolated
30 inch amounts in some locations.

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

* FLOODING RAIN:
Potential impacts from the flooding rain are still unfolding across
areas along and east of I-35 and I-37. Remain well guarded against
life-threatening flood waters having possible devastating impacts. If
realized, these 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, arroyos, and ditches may become raging rivers. In
      mountain areas, deadly runoff may rage down valleys while
      increasing susceptibility to rockslides and mudslides. 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.

* WIND:
Potential impacts from the main wind event are now unfolding across the
tropical storm warned area. Remain well sheltered from life-
threatening wind having possible extensive impacts. If realized, these
impacts include:
    - Considerable roof damage to sturdy buildings, with some having
      window, door, and garage door failures leading to structural
      damage. Mobile homes severely damaged, with some destroyed.
      Damage accentuated by airborne projectiles. Locations may be
      uninhabitable for weeks.
    - Many large trees snapped or uprooted along with fences and
      roadway signs blown over.
    - Some roads impassable from large debris, and more within urban
      or heavily wooded places. Several bridges, causeways, and
      access routes impassable.
    - Large areas with power and communications outages.

* TORNADOES:
Potential impacts from tornadoes are still unfolding east of I-35.
Remain well braced against a tornado event having possible limited
impacts. If realized, these 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 SOUTH CENTRAL TEXAS, little to no impact is
anticipated.

PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------

* OTHER PREPAREDNESS INFORMATION:
Now is the time to remain safely sheltered from the storm. Stay inside
and away from windows. Listen for updates and be ready in case you
lose electrical power. Locate your battery powered radio and flashlight
from your Emergency Supplies Kit. Keep these items close.

Continue to keep your cell phone well charged for as long as possible.
If you lose power, use it more sparingly and mainly for personal
emergencies and check-ins. Do not overload communications systems with
idle chatter.

Do not be a thrill seeker or risk your life for senseless photos or
videos. Be wise and avoid becoming another statistic.

Be ready to move to the identified safe room if your home or shelter
begins to fail. Quickly move to an interior room on the lowest floor.
Put as many sturdy walls between you and the storm as you can.
Protect your head and body.

* 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 Austin/San Antonio TX around 4 PM CDT, or sooner if
conditions warrant.

$$
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