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July 17, 2008: UPDATE
The upper trough I've been watching since Monday is taking a more southerly trek than anticipated. This, along with strengthening high pressure over Oklahoma and Texas, means that the vertical atmospheric moisture supply will be on the decrease; and we'll probably not see any rain this weekend.
High pressure cells aloft cause sinking air. The sinking process heat the air up. I am not expecting anything like record heat, but daily highs will range from 95 to 100. Heat Index values may approach 105 in the hottest part of the day. One blessing: slightly drier air associated with the sinking air mass should allow for decent cooling each night. Lows will range from the mid 60s to lower 70s.
Take Care,
Steve LaNore
Chief Meteorologist
KXII-TV
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