ALASKA EXTENDED FORECAST DISCUSSION NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 125 PM EST SAT DEC 20 2014 VALID 12Z WED DEC 24 2014 - 12Z SUN DEC 28 2014 A STORMY PATTERN CONTINUES TO BE INDICATED FOR THE BERING SEA AND ALEUTIANS AT THE MEDIUM RANGE--THOUGH GLEANING ANY SOLID DETAILS FROM ANY GIVEN OPERATIONAL MODEL ON THE INDIVIDUAL SYNOPTIC SYSTEMS THAT MAY AFFECT THE ALASKA REGION IS MORE ART THAN SCIENCE IN LIGHT OF THE CHAOTIC RANGE THAT PRESENTS. PREFERRED THE EUROPEAN CENTRE ENSEMBLE MEAN AS AN ANCHOR POINT AS OPPOSED TO THE GEFS MEAN--WHICH CENTERED THE HEART OF THE SURFACE LOW ACTIVITY ODDLY FAR TO THE EAST AND SOUTH OF CONTINUITY AND THE WHOLE OF THE MODEL GUIDANCE. KEPT AT LEAST SOME OF THE 00Z/20 OPERATIONAL ECMWF IN THE BLEND TO ADD FIBER, SO TO SPEAK, TO THE DIFFUSE MASS FIELDS THAT CHARACTERIZE THE ARITHMETICALLY-AVERAGED ENSEMBLE MEANS--PARTICULARLY EARLIER IN THE FORECAST WHEN THE BEST CORRELATION BETWEEN THE OPERATIONAL SOLUTION AND ITS ATTENDANT MEAN EXISTS. CISCO