Big Changes this Weekend

December 7, 2007 at 3:45 am | Posted in Uncategorized | Leave a comment

A warm front moved through north Texas Thursday afternoon. After a low of 40 Thursday morning, we climbed to 67 by late afternoon. But that’s nothing compared to what we will see on Friday and Saturday.

Friday’s high should reach 80 degrees, and Saturday 79. In fact, it could be even warmer on Saturday, depending on how much cloud cover persists through the afternoon.

But we will see a big change on Sunday. And that could pose problems for runners in the White Rock Marathon in Dallas that morning. It really depends on just when the cold front arrives, and right now I am thinking it will be before noon. But as we get closer, that could be adjusted by 4 to 6 hours either way.

At the moment, I am forecasting a warm, humid, breezy morning, with cloudy skies, temperatures in the 60’s, high humidity, and south winds 10-15 mph. Not the best weather for long distance running. But once the cold front arrives, temperatures will drop rapidly, into the 50’s and maybe 40’s by late afternoon, with gusty north winds of 15 to 20 mph, and the possibility of thunderstorms.

If the front arrives earlier than expected, it will be cold, windy and wet for the entire race. If the front arrives later than expected, it will be very warm and humid for the entire race. And if it arrives before noon, as expected, you will get some of each type of weather.

Sorry I can’t do better this far out. You will really need to watch Steve MacLaughlin’s Saturday night weather forecast, and James Aydelott Sunday morning, to get the latest forecast timing for the front, before deciding what to wear, if you are running the Rock.

But we know for sure that it will be much colder Sunday night into next week. In fact, a major ice storm is expected in Oklahoma. But at the moment, it appears that we will just see a cold miserable rain here in north Texas, with temperatures generally in the 40’s both Monday and Tuesday.

Chief Meteorologist David Finfrock

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