EXTENDED FORECAST DISCUSSION NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 1051 AM EST MON JAN 20 2014 VALID 12Z THU JAN 23 2014 - 12Z MON JAN 27 2014 WITH SUBSTANTIAL DOUBTS IN THE LAST FEW RUNS OF THE DETERMINISTIC ECMWF AND GFS WITH VARIOUS KEY SYNOPTIC FEATURES, CHOSE TO RELY UPON THE MOST RECENT EUROPEAN CENTRE ENSEMBLE MEAN THIS FORECAST FOR THE FRONT AND PRESSURES. THE HIGH-AMPLITUDE PATTERN CONTINUES ACROSS NORTH AMERICA, WITH A FULL-LATITUDE RIDGE OVER THE WEST AND A BROAD, DEEP TROUGH IN THE EAST. MOST OF THE PRECIPITATION THIS PERIOD WILL BE CONFINED TO THE COASTLINES AND ACROSS THE GREAT LAKES REGION. THE BIG NEWS WILL CONTINUE TO BE THE FRIGID TRANSPORT OF AIR FROM THE ARCTIC INTO THE EASTERN UNITED STATES. CISCO