The National Weather Service issued the watch for 'Bandera, Bexar, Blanco, Burnet, Comal, Edwards, Gillespie, Hays, Kendall, Kerr, Kinney, Llano, Medina, Real, Travis, Uvalde, Val Verde and Williamson [counties].

Life-threatening flash flooding was expected along creeks and streams, urban areas with poor drainage, highways, low-lying streets and underpasses.

"A very slow-moving thunderstorm over Comal County is producing extremely heavy rainfall of 3 to 5 inches per hour. Additional storms may continue to move over the same areas and may cause additional flooding. Stay clear of any flooded roadways: Turn around, don't drown," forecasters with NWS said.

Officials balked at the cost for installing a siren warning system and the potential for sirens to blare in the middle of the night and wake up

The early warnings and alerts from the National Weather Service didn’t indicate a catastrophic flood was on its way.

Experts said warnings issued in the run-up to this weekend’s flooding were as timely and accurate as possible, but questions about whether the alerts reached people most at risk remain.

An addition 2 inches of rain may cause river levels to rise by 2-3 feet Sunday afternoon and evening. Travel is not recommended.

Michael Karlis is a Staff Writer at the San Antonio Current. He is a graduate of American University in Washington, D.C., whose work has been featured in Salon, Alternet, Creative Loafing Tampa Bay, Orlando Weekly, NewsBreak, 420 Magazine and Mexico Travel Today. He reports primarily on breaking news, politics...