Friday, January 23, 2009

Warm, Rain Arrives Late

A few high clouds and southerly winds kept the temperature from dropping too far last night. We're currently sitting at 43 and will be headed up to near 70 later this afternoon. Our warmth will be short lived, however, as a cold front is currently entering Northwest Arkansas. The upper air flow is not particularly conducive for a fast moving frontal passage, and in fact, the front likely won't pass until late tonight. The GFS and NAM are still in slight disagreement with the timing of the front. I like the NAM's later arrival due to the upper air pattern. High clouds will be dominant for most of the day, but with warm air aloft, I think we can reach 70 this afternoon.

Since I prefer the NAM's timing, rain will likely begin after 9 p.m. The rain should last for a few hours but should end a little after midnight when the front sweeps through. Colder air behind the front will drop temperatures to 41 tomorrow morning. Saturday looks mostly cloudy with highs in the upper 40s. Sunday will feature mostly cloudy skies with highs near 50. Moderating temperatures will return next week.

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