List,

December 1989, ranks as one of the most historic months with regard to 
temperatures across much of the eastern half of the country.  Locally, 
it was one of the coldest months on record...and coincidentally was 
followed by one of the warmest January's on record.

In recognition of the 20th Anniversary of this amazing feat by Mother 
Nature, Forecasters Pete Banacos,  Brooke Taber and Eric Evenson have 
put together an excellent in-depth analysis of the atmospheric patterns 
responsible and the resulting temperatures observed in the region. I 
thought you folks may find it interesting as well.

This writeup is posted on our Past Weather Events page on our website:
http://www.erh.noaa.gov/btv/events/recentwx.shtml   (look under the 
Historical Events section for the December 1989 Arctic Outbreak link)
-- 
Andy Nash
Meteorologist-in-Charge
NOAA/National Weather Service Burlington VT
http://weather.gov/burlington
802-862-8711 x222