* WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of south central Texas, including the following counties, Bexar, Comal and Kendall. * WHEN...Until 330 AM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Dangerous flows over low-water crossings. * ADDITIONAL DETAILS... - At 1220 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Up to 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... San Antonio, Boerne, Canyon Lake, Helotes, Fair Oaks Ranch, Bulverde, Garden Ridge, Shavano Park, Hollywood Park, Cross Mountain, Bergheim, Timberwood Park, Guadalupe River State Park, The Dominion, Leon Springs, Kreutzberg, Spring Branch, Smithson Valley, Walnut Grove and Nelson City. - http://www.weather.gov/safety/flood