Hi. I'm Greg Whitworth. A cold front comes down Thursday giving northern Oklahoma thunderstorms Thursday evening. A few will likely produce hail up to the size of ping pong balls. The storms progress south Friday morning as they weaken. There will be a chance of storms Friday across the southern 2/3rds of Oklahoma. Storms may not clear southern Oklahoma by the time fireworks begin. A forecast graphic is included on our weather bar. Saturday and Sunday are looking dry with temperatures heating up. Humidity will be fairly low during the afternoon. Have a great and safe day! 07/02/08 9:33 pm