South Carolina Ground-Level Ozone Forecast Discussion
SC DHEC/BUREAU OF AIR QUALITY/SPARE-THE-AIR
GROUND-LEVEL OZONE FORECAST PUBLIC DISCUSSION
VALID: 3:27PM EDT TUE 19-AUG-2008
***CODE ORANGE ACTION DAY FOR THE UPSTATE*** Surface high pressure currently over the Great Lakes will build into the mid-Atlantic states on Wednesday. This feature, along with the slow northward progression of Tropical Storm Fay, will increase the pressure gradient between these two systems. Therefore, winds will be from the east and they will be stronger than today. The air will be very dry over the Upstate and transport winds will bring more ozone concentrations to that zone. Thus, the Upstate will be in the Orange category and Catawba will be in the Yellow category. Skies will be mostly sunny and convection will be very limited. Maritime air will move into the Midlands and all other zones will be in the Green category. **behrenwr