Area forecast discussion National Weather Service Austin/San Antonio Texas 302 PM CDT Thursday may 23 2013 Short term (tonight through Friday night)... convection will develop over the Mexican mountains this evening and move toward the east. There is a slight chance for these storms to move into Val Verde County. Forecast cape is around 2000 j/kg...so potential is for some storms to be severe. We have issued a Severe Thunderstorm Watch for Val Verde County until 10 PM. The rest of the County Warning Area will be rain free as the upper level ridge continues to build over the Southern Plains. The surface high pressure is centered over the Gulf with southeasterly flow from the Gulf. This will keep moist air in place. Skies will become cloudy overnight. Friday an upper level short wave will move through the ridge and there will be another slight chance for thunderstorms over the western part of the region Friday and Friday night. && Long term (saturday through thursday)... Saturday the slight chance will spread to the east as far as i10/i37. By Saturday night the upper short wave will move away ending rain chances for the area. Then the entire County Warning Area will be in the repeating pattern of overnight/morning clouds and clearing afternoons. Temperatures will warm and be mostly above normal. The next change will come Wednesday/Thursday of next week as an upper level trough will move into West Texas and bring a chance for thunderstorms to our County Warning Area. && Preliminary point temps/pops... Austin Camp Mabry 74 93 73 94 71 / 10 10 10 10 - Austin Bergstrom international Airport 73 91 72 93 69 / 10 10 10 10 - New Braunfels Muni Airport 73 92 71 93 70 / 10 10 10 10 - Burnet Muni Airport 71 89 70 90 68 / 10 10 10 10 10 del Rio International Airport 77 94 76 94 73 / 20 20 20 20 10 Georgetown Muni Airport 72 89 71 91 69 / 10 10 10 10 - Hondo Muni Airport 75 94 74 93 71 / 10 10 10 20 10 San Marcos Muni Airport 74 91 73 92 70 / 10 10 10 10 - La Grange - Fayette regional 75 91 74 91 71 / 10 10 10 10 - San Antonio International Airport 75 92 74 92 72 / 10 10 10 20 - Stinson Muni Airport 75 92 74 92 71 / 10 10 10 20 - && Ewx watches/warnings/advisories... none. && $$ Mesoscale/aviation...01 synoptic/grids...05 public service/data collection...30