* WHAT...Flooding caused by excessive rainfall is possible.

* WHERE...Portions of south central 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 Wharton.

* WHEN...Through Wednesday morning.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS... - Rounds of showers and thunderstorms are expected, with period of heavy rain. Rainfall totals through Wednesday morning are between 2 to 4 inches, with isolated higher amounts of 6-8 inches. Rainfall rates are expected to range from 2-4 inches per hour at times. - http://www.weather.gov/safety/flood