The Rex Block
Posted by JAC on 1/7/2010, 7:14 am
I know, I have been harping about this for the past few weeks but it was significant in terms of the weather across the CONUS.

First image, with the 4 maps below, shows 500mb height anomolies from mid Dec to early Jan.

The fourth is for the average for the last week in Dec. & first week in Jan.

The big red spot over Greenland is the main High driving the Rex Block.

That in turn caused the cold air blast thru the mid CONUS.

Good news - it is forecast to move out.

Check out the 1000-500mb thickness forecast.
CONUS is on the bottom and Siberia on top.  
Its all moving to Siberia.

http://www.esrl.noaa.gov/psd/map/images/ens/mslp_nhsm_animation.html

Expect a nice warm up mid next week - see last image below.















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Global What? Widespread severe cold makes people wonder about climate - JAC, 1/7/2010, 7:01 am
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