Dec 132010
 
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It looks like the persistent high pressure system off the coast of California and the Baja Peninsula is going to move south as a major low pressure system stations itself in the Gulf of Alaska. The opposite rotations of the two systems is going to open up a storm door that current looks to project out through Christmas. The high and low pressure systems will become a storm pump as their flows coincide in an easterly direction.

A series of troughs will be pushed through this door. Many of these will cross Northern Arizona. Each wave will bring cool temperatures and a chance for precipitation. Currently, the first wave will pass through our area from Wednesday evening to Friday morning. It looks to have only light moisture amounts with it. Looking longer, the start of next week could see over half an inch of water for the Northland.

How can you tell a change is on the way? You have an amazingly beautiful day like today is going to be. We all know it just can last. Enjoy it while you can.

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 Posted by at 6:48 am

  One Response to “High pressure to move to the south”

  1. man, the models are all over the place on this scenario. gfs dropped the first frontal sys for a couple days over the weekend… now it’s back. and, at least for today, nogaps seems to have abandoned it altogether… but yesterday it was showing something light moving thru our region.

    i always wonder what’s up when models vary so much, run-to-run. regardless, i hope your scenario’s right. i’d like to put my skis on!

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