Thursday, February 19, 2009

Sunny, Breezy, and Colder

We thankfully dodged another severe weather bullet yesterday. I believe moisture return and weak convergence along the front prevented a bigger severe weather event from occurring in our area. Hopefully we'll be able to continue this trend through the remainder of the winter and the spring. However, I get the sense that we may be in store for some active weather with the current La Nina phase.

Temperatures are much colder behind yesterday's frontal passage and will remain that way through the remainder of the day. Sunny skies will dominate, but cold air advection will not allow much in the way of warming this afternoon. With afternoon 850 mb temperatures around -7 C, I don't think we'll make it out of the 40s today. In fact, I'll forecast a high of 49 for this afternoon. A tight pressure gradient and mixing will produce some gusty northwest winds throughout the day making the temperature feel even colder. Winds will subside tonight and with clear skies and dry air, the temperature should drop rather quickly once the sun sets. Given a good radiational cooling setup, I'll forecast a low of 26 tomorrow morning.

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