Friday, September 17, 2010

What Will the Weekend Bring?

Have you ever watched the weather and thought to yourself you could do a better job at forecasting?  I'm sure many of you have! :)
But it's not as easy as you may think.  I will admit that there are stretches that we get in where the weather is fairly quiet and it makes our job all that much easier.  There are also stretches where I think many of us leave with a little less hair (or grey ones in my case) after work.  I bring this up because this is the problem we ran into for this weekend.  There are several computer weather models we look at each day that help us forecast.  But what happens when the majority of them are all showing something different?  The big weather maker for this weekend will be the cold front that's slated to come through.  A couple of our models were actually keeping us on the south side of the front, which would have yielded 80° degree weather, while a few more were taking the front south of us keeping the clouds with temperatures in the 60s.

This morning after putting the forecast together I had a little more confidence of what was going to happen this weekend because the vast majority of the models were actually bringing the front through and keeping us cool and cloudy.  This is the set-up that looks like is going to happen.  An area of low pressure in Canada will drop a cold front through later this evening.  As it does an area of low pressure will develop in the southern Plains helping to bring in a little more moisture tonight and tomorrow.  This will cause showers, with maybe a few embedded storms, to move through.  The jetstream, however, is pretty much running from west to east, or parallel, to our cold front.  A lot of times when this happens there is no big push to move the front through which causes it to stall.  Remember that our jetstream is our steering/driving wind for our weather.  On Sunday an area of high pressure trys to move in to the north which may actually aid in pushing the front a little further south before lifting back north next week.  If that's the case then Sunday would end up dry, but still remain cloudy.  I guess we'll see if my thinking was right after this weekend! :)

    

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