GaWx link said:[quote author=GaStorm link=topic=60.msg4034#msg4034 date=1482972161]
The AO is going negative in the 10-14 day forecast which is a huge drop from the 4+ value it was at not long ago. So we have a chance at a -NAO, -AO and nice -EPO to boot. This should be interesting!
http://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/ao_index_ensm.shtml
That's what happened in Jan 2014 after the strongly +AO of Dec 2013.
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Definitely a very cold period in Jan 2014 with the notorious snowjam. One of the few storms to hit with 20s during the day as well.