...A HEAT ADVISORY CONTINUES THROUGH AT LEAST TODAY FOR MOST OF THE PERMIAN BASIN...TRANS PECOS...DAVIS MOUNTAINS...BIG BEND AND PRESIDIO VALLEY FOR VERY HOT TEMPERATURES... .The combination of increasing high pressure aloft and very dry air will combine to produce abnormally high heat today. Expect temperatures across portions of the Permian Basin to climb to 107 degrees...around 100 degrees in the Davis Mountains...and 110 degrees or higher along the Rio Grande. ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * TEMPERATURE...Highs from 105 in the Permian Basin to 115 Big Bend. * IMPACTS...If you plan to be outside, avoid prolonged exposure or strenuous physical activity. Drink plenty of non-alcoholic or non- caffeinated beverages. Wear lightweight, light-colored, loose- fitting clothing, a hat to shield yourself from the sun, and use a sunscreen to reduce possible sunburn. The elderly, very young, sick and persons with heart conditions are most at risk in extreme heat.