[Tropical] Hurricane Local Statement

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WTUS84 KEWX 270922
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TXZ173-189>194-205>209-220>225-271730-

Tropical Storm Harvey Local Statement Advisory Number 28
National Weather Service Austin/San Antonio TX  AL092017
422 AM CDT Sun Aug 27 2017

This product covers SOUTH CENTRAL TEXAS

**Tropical storm Harvey continues to bring a life-threatening and
catastrophic heavy rainfall event east of I-35 and I-37**


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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* 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 50 miles
      east-southeast of San Antonio TX
    - 29.2N 97.7W
    - Storm Intensity 45 mph
    - Movement South-southwest or 200 degrees at 1 mph

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

The center of Harvey has moved very little over the last 6 hours.
Currently, the center of the circulation is located just south of the
Interstate 10 corridor in Gonzales county. The center was analyzed to
be moving south-southwest at 1 mph.

Our long anticipated life-threatening flood event has begun east of
the Interstate 35 corridor as Flash Flood Warnings have been issued.
Over a foot of rain has fallen from Bastrop and Caldwell counties,
southeast to Bay City over the last 48 hours. Multiple water rescues,
road closures, evacuated homes, and stalled vehicles have been
reported across both Bastrop and Caldwell counties.

Additional rainfall totals of 10-15 inches with isolated areas of 20+
inches are still anticipated in these areas, which will likely worsen
the flooding in these already impacted areas. Across Travis County,
including the city of Austin, 2 to 8 inches of rain has fallen in the
last 48 hours with an additional 5 to 10 anticipated through
Wednesday. The city of San Antonio has been bisected by the heavy
rainfall, being on the western extent of the rain shield. Eastern
areas have seen a little over 3 inches of rainfall where western areas
have seen less than an inch. Three to six inches of additional
rainfall is forecast for the city through Wednesday.

Winds will gust to 40-50 mph this morning in the area under the
tropical storm warning. Elsewhere wind gusts will be 30-40 mph.

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

* FLOODING RAIN:
Potential impacts from the flooding rain are still unfolding across
flash flood watch area. Remain well guarded against life-threatening
flood waters having additional catastrophic 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.

Elsewhere across SOUTH CENTRAL TEXAS, little to no impact is
anticipated.

* WIND:
Potential impacts from the main wind event are now unfolding across
area. Remain well sheltered from hazardous wind having possible
limited impacts. If realized, these impacts 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 SOUTH CENTRAL TEXAS, little to no impact is
anticipated.

* TORNADOES:
Potential impacts from tornadoes are still unfolding across the most
eastern counties. 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.


* 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 11 AM CDT, or sooner if
conditions warrant.

$$
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