As always, the weather is a big factor here
In 2005, the weather was so unseasonably cold that we all froze during the night matches. In 2006, a tornado hit the stadium the second day of qualifying. Last year, the sudden onset of humidity during Patty's first match caused her to lose because the balls became so heavy. Then tornados tore up part of Daniel Island the day of the finals, and the finals were almost cancelled. Jankovic's ability to play in high wind and ever-changing wind was very impressive.
Yesterday was moderately windy, on and off. Today, winds are supposed to get as high as 25 mph., out of the north, there could be a little rain, and it is going to get very cold (in the 40s) tonight. It's kind of strange when you are cold, your hat is blowing off, and you are getting sunburned--all at the same time.
Anyway, there is a LOT of weather here, as always. We're off soon to watch the Krajicek-Cornet match, and I want to be sure to watch Chakvetadze play Cirstea. And of course, we'll be watching Dulko and Serena.