Therefore, it will be an early show for high ozone values. By 1 p.m., thunderstorm development, increased vertical mixing, and higher wind speeds at the surface will help to dissipate the plume. Anvils from the convection will stream to the west and west-northwest, building a broken ceiling aloft by evening. Quick Look at Tomorrow Roughly similar to today. Light winds overnight will change to east-southeasterly winds by afternoon.
Thunderstorms again are likely to develop along the sea breeze by early afternoon.
Multi-Day Outlook A ridge building over the southeastern US will bring unsettled weather with possible widespread showers. Prevailing winds will be from the east-northeast. Dirtiness of air mass will depend upon extent of upstream and local showers, but it could be quite dirty. Lighter large-scale winds than in the past few days would favor high ozone. The urban plume would be advected toward the northwest, most likely toward Austin.