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Flash Flood Watch

Flood Watch
National Weather Service Houston/Galveston TX
332 PM CDT Tue May 18 2021

Houston-Trinity-Madison-Walker-San Jacinto-Polk-Burleson-Brazos-
Washington-Grimes-Montgomery-Northern Liberty-Colorado-Austin-Waller-
Inland Harris-Chambers-Wharton-Fort Bend-Inland Jackson-Inland
Matagorda-Inland Brazoria-Inland Galveston-Southern Liberty-Coastal
Harris-Coastal Jackson-Coastal Matagorda-Coastal Brazoria-Coastal
Galveston-Matagorda Islands-Brazoria Islands-Galveston Island-
Bolivar Peninsula-
Including the cities of Brookshire, Pearland, Caldwell, Stowell,
Liberty, The Woodlands, Dickinson, Devers, Anahuac, Coldspring,
Bellville, Bay City, Trinity, Shepherd, Columbus, Sugar Land,
College Station, Surfside Beach, Hempstead, Dayton, Huntsville,
Baytown, Crockett, Wharton, Conroe, Missouri City, Pecan Grove,
Palacios, League City, La Marque, Bryan, Lake Jackson, Mont Belvieu,
Old River-Winfree, Pasadena, Freeport, First Colony, Clute,
Navasota, Livingston, Texas City, Brenham, Waller, Eagle Lake,
Galveston, Houston, Prairie View, Groveton, Sealy, Rosenberg,
Friendswood, Winnie, Alvin, Ganado, Corrigan, El Campo, Mission
Bend, Edna, Cleveland, Angleton, Somerville, Weimar, and Madisonville
332 PM CDT Tue May 18 2021


The Flash Flood Watch continues for

* Portions of south central Texas and southeast Texas, including the
  following areas, in south central Texas, Coastal Jackson and
  Inland Jackson. In southeast Texas, Austin, Bolivar Peninsula,
  Brazoria Islands, Brazos, Burleson, Chambers, Coastal Brazoria,
  Coastal Galveston, Coastal Harris, Coastal Matagorda, Colorado,
  Fort Bend, Galveston Island, Grimes, Houston, Inland Brazoria,
  Inland Galveston, Inland Harris, Inland Matagorda, Madison,
  Matagorda Islands, Montgomery, Northern Liberty, Polk, San
  Jacinto, Southern Liberty, Trinity, Walker, Waller, Washington and

* Through Thursday morning

* An upper level disturbance over Central Texas and an outflow
  boundary will move into Southeast Texas this evening. An
  additional 1 to 3 inches of rain with locally higher totals will
  be possible tonight. A stronger upper level disturbance will bring
  yet another round of heavy rain on Wednesday into Thursday with
  additional rainfall totals of 2 to 4 inches of rain with again
  locally higher totals possible. Storm total rainfall by Thursday
  morning will average between 4 and 8 inches with isolated totals
  possibly exceeding 10 inches. The flood threat will be strongly
  dependent on where the rain falls and how quickly it falls.


A Flash Flood Watch means that conditions may develop that lead to
Flash Flooding. Flash Flooding is a very dangerous situation. You
should monitor later forecasts and be prepared to take action should
Flash Flood Warnings be issued.




Flood Warning

Flood Statement
National Weather Service Houston/Galveston TX
252 AM CDT Tue May 18 2021

...The Flood Warning is extended for the following rivers in Texas...

  Tres Palacios River near Midfield affecting Wharton and Matagorda

...The Flood Warning continues for the following rivers in Texas...

  Trinity River at Liberty affecting Liberty County.

  Trinity River near Moss Bluff affecting Chambers and Liberty

For the Trinity River...including Crockett, Riverside, Romayor,
Goodrich, Liberty, Moss Bluff...Moderate flooding is forecast.
For the Tres Palacios River...including Midfield...Minor flooding is


Persons with interests along these streams should keep alert to
rising water and take all precautions to protect their property. Do
not drive or walk into flooded areas the depth and water velocity
could be too great for you to cross safely. Motorists should avoid
any water covered roads and find an alternate route. Livestock and
equipment should be removed from the flood plain immediately. Stay
tuned to NOAA Weather radio or other news sources for further

Motorists should not attempt to drive around barricades or drive
cars through flooded areas.

Additional information is available at

The next statement will be issued this afternoon at 300 PM CDT.


252 AM CDT Tue May 18 2021

...The Flood Warning is now in effect until late this evening...

The Flood Warning continues for
  the Tres Palacios River near Midfield.
* Until this evening.
* At 2:30 AM CDT Tuesday the stage was 25.7 feet.
* Flood stage is 24.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
  at 2:30 AM CDT Tuesday was 27.8 feet.
* Forecast...The river is expected to fall below flood stage late
  this morning and continue falling to 5.6 feet early Sunday
  morning. However, additional rainfall over the next several days
  could produce new rises or longer duration flooding.
* Impact...At 26.0 feet, Moderate lowland flooding begins with water
  well into the flood plain on the right upstream bank and within
  inches of spilling over the east approach to the bridge at FM
  456.  The river will be almost one quarter mile wide in the
  vicinity of the gage.
* Flood History...This crest compares to a previous crest of 25.6
  feet on 07/03/2007.


                   Fld   Observed           Forecasts (1 am CDT)
Location           Stg   Stg   Day/Time     Wed   Thu   Fri

Tres Palacios River
Midfield           24.0  25.7  Tue 2 am CDT 18.6  11.8  7.8


LAT...LON 2905 9609 2892 9612 2884 9610 2884 9620
      2892 9622 2905 9620


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