What a difference a day makes.  While high pressure is still the dominant effect over the southeastern United States, the low pressure over the upper peninsula of Michigan has already moved further north than forecasted yesterday, now centered over central Quebec.  This, along with the front not developing as sharply as the models had anticipated, has allowed for the southeastern high pressure to persist longer, even just over the last day, than anticipated.  This is a good sign for race fans. 

The lack of development with this front is looking to limit the atmospheric instability, or likelihood for thunderstorms, over the Homestead region for saturday.  This is the primary factor leading to the current race day format.  With the stabilization of the atmosphere, as well as slightly lower dew point temperature in the models, I’m decreasing my probability of precipitation. 

Thus, the official iiMy green flag forecast:

• Approx. Scheduled Green Flag:  8:00 EDT
• Temperature:  72°F
• Dew Point:  62°F
• Relative Humidity: 71%
• Winds:  Easterly (from the East) at 5 mph
• Chance of Rain:  10%
• Will we race?  Yes.
  

This entry was posted on Wednesday, March 26th, 2008 at 7:46 pm and is filed under ICS. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.