Tuesday, April 22, 2008

Don't be lulled into summer yet!

With these warm temperatures it's very easy to be lulled into summer. There are a couple of pattern changes which could really get your attention over the next 5 to 7 days. The first of these pattern changes comes Friday. You can see the warmer temperatures out ahead of this system. The 850 mb temperatures are about +15! That's very warm but with the clouds and storms temperatures will still probably be in the middle 70s.

Sunday will see cooler temperatures, but I'm more interesting in what's happening to the west. Take a look at the cool air which has been pooling over Montana over the last week or so. This cold air is finally taken out of the picture by a huge system moving out of the Gulf of Alaska.
We get to Monday and it really begins to look different. Cold air is really moving around a low pressure system and it could take temperatures down into the 40s by Monday. This is really the first look we have at this colder air on the move and it's a huge pattern change so it will be fun to track over the next few days. Stay tuned!

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