...HEAT ADVISORY IN EFFECT FROM 11 AM CDT /10 AM MDT/ TO 9 PM CDT /8 PM MDT/ SATURDAY FOR SOUTHERN LEA COUNTY AND MOST OF WEST TEXAS... ..A strengthening upper ridge and drier airmass will result in strong heating across this weekend. Very hot temperatures will result in hazardous conditions, especially for those who have to be outdoors. Take precautions to protect yourself from heat related illness. ...HEAT ADVISORY IN EFFECT FROM 11 AM CDT /10 AM MDT/ TO 9 PM CDT /8 PM MDT/ SATURDAY... * TEMPERATURE...105 to 113 degrees in the Pecos River and Rio Grande Valleys and adjacent plains. 100 to 104 degrees in the Davis and Apache Mountains. * IMPACTS...A period of hot temperatures is expected and will create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.