By Doug Schneider
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The main change to today's forecast update is to add a small chance of showers on Thursday afternoon. Yesterday, I mentioned that showers and thunderstorms are likely on Wednesday night. That is still expected, but the low pressure system is trending slower, which will keep some moisture and instability over the Finger Lakes area into Thursday afternoon. I do not expect that this will be a heavy rain, and I don't expect lightning either, so impacts should be low. But since there are practice sessions on Thursday, and amount of rain may lead to a stoppage.
High pressure builds over the area on Thursday night, and will shift east through Friday and Saturday. This will provide nice weather with plenty of sunshine and a warming trend to temperatures as a southerly flow develops.
The high pressure ridge weakens on Sunday, and a cold front will approach from the west. The timing of this front still looks like it will be moving through on Sunday night. However, I can't rule out some isolated showers and thunderstorms popping up in the afternoon, ahead of the front. So I will keep the 20% chance of rain in the forecast, but I still think that most of the rain will arrive after the race ends, and impacts on the race are low.
High pressure builds over the area on Thursday night, and will shift east through Friday and Saturday. This will provide nice weather with plenty of sunshine and a warming trend to temperatures as a southerly flow develops.
The high pressure ridge weakens on Sunday, and a cold front will approach from the west. The timing of this front still looks like it will be moving through on Sunday night. However, I can't rule out some isolated showers and thunderstorms popping up in the afternoon, ahead of the front. So I will keep the 20% chance of rain in the forecast, but I still think that most of the rain will arrive after the race ends, and impacts on the race are low.
