Tuesday, January 12, 2010

GFS changes things up...

This blog is based just off the 00z run of the GFS because it has a completely different look then the previous runs. And it's not looking good.

First let's take a look at the surface. You can see a nice amount of precipitation moving in but cold air is not far and thickness values are low:

Now Let's look at the 850 temperatures, since they are above freezing that means it can't snow. But that doesn't mean the precipitation won't be frozen once it hits the ground :

And here is a look at the sounding. This confirms that temperature are below freezing at the surface for the majority of the storm and this could lead to freezing rain and sleet build up, and lots of it. What we need to do is get those 850 temps to cool down a bit and then it will support snow, if you like snow that is:

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