Even though the temperature in San Antonio tonight and Wednesday night is not expected to officially fall below freezing, a FREEZE WARNING is in place for the entire region until 9 AM Thursday morning, 1200 WOAI news reports.


  The National Weather Service for San Antonio and Austin says isolated regions could see temperatures as low as the middle 20s early Wednesday and Thanksgiving morning.


  A freeze warning means sub freezing temps are imminent or highly likely, according to the warning.  These conditions will  kill crops and other sensitive vegetation.


  The advisory says cold and dry air will settle over south central Texas tonight.


  "North winds will remain steady in the early morning hours Wednesday morning, allowing some locations to hover just above freezing for tonight.  The cold air will continue spilling south and by Wednesday night light winds will promote a freeze across nearly all of South Central Texas through daybreak Thursday.


  The advisory says this weather could cause 'damage to temperature sensitive plants and potential harm to unprotected pipes, pets, and livestock.'