Areas affected...Pecos and Concho Valleys of Texas north into the South Plains/Big Country Concerning...Severe potential...Watch likely Valid 180253Z - 180500Z Probability of Watch Issuance...95 percent SUMMARY...Severe-weather risk will gradually increase over the next several hours. Damaging wind gusts should be the primary risk initially, before tornado threat ramps up later tonight. An initial, Severe Thunderstorm Watch will likely be required in the next 1 to 2 hours.