EXTENDED FORECAST DISCUSSION NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 1227 AM EST TUE JAN 14 2014 VALID 12Z FRI JAN 17 2014 - 12Z TUE JAN 21 2014 USED THE 12Z/13 ECMWF FOR THE FRONTS AND PRESSURES FOR DAYS 3 THROUGH 7, AND THE 12Z/13 ECENS MEAN FOR THE TEMPERATURES AND POPS. LOOKING AT A SERIES OF THE LAST FOUR GEFS AND ECENS MEANS FROM THE MAJOR MODEL CYCLES, THE LONGWAVE SIGNAL FALLS OUT FINE--A COUPLE AMPLIFICATIONS OF THE WESTERN RIDGE/EASTERN TROUGH. THE 12Z/13 DETERMINISTIC ECMWF WAS CLOSE ENOUGH TO THE MULTI-DAY MEANS TO SERVE AS A REALISTIC TEMPLATE FOR THE FRONTS AND PRESSURES. THE MEAN--BY NATURE--OFFERS A PROBABILISTIC SPREAD FOR THE OTHER MASS FIELDS. THE GFS/GEFS ARE TOO WASHED OUT WITH THE SURFACE INVERSIONS OVER THE WEST TO BE OF MUCH USE. MOST OF THE PRECIPITATION THIS PERIOD WILL BE OVER THE EAST ON THE FRONT SIDE OF THE LONGWAVE TROUGH, WITH SNOW INDICATED ALONG AND JUST EAST OF THE APPALACHIANS. ALL IN ALL, THE PATTERN IS NOT PARTICULARLY COLD. CISCO