ALASKA EXTENDED FORECAST DISCUSSION NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 208 PM EDT SAT JUN 13 2015 VALID 12Z WED JUN 17 2015 - 12Z SUN JUN 21 2015 STILL LITTLE CHANGE IN BOTH THE OUTLOOK FOR THE GENERAL FLOW PATTERN ACROSS THE ALASKA REGION AT THE MEDIUM RANGE AND MODEL CONSISTENCY/BEHAVIOR. IN GENERAL, THE EUROPEAN AND CANADIAN CENTRE GUIDANCE HAS CLUSTERED, WITH GREATER STABILITY THAN THE GFS/GEFS. THERE HAS BEEN ENOUGH RUN-TO-RUN VARIABILITY AROUND THE EDGES OF THE BLOCKING HIGH IN THE OPERATIONAL ECMWF TO MERIT BLENDING IT WITH ITS ATTENDANT ECENS MEAN--AGAIN THE CASE TODAY. THE MOST CONTENTION THIS FORECAST PACKAGE IS ALONG THE CENTRAL AND OUTER ALEUTIAN CHAIN. THE EUROPEAN AND CANADIAN CENTRE GUIDANCE GRAZES THOSE ISLANDS WITH THE NORTHERN FRINGES OF A LARGE CYCLONE LATE NEXT WEEK. THE 06Z/13 GEFS MEAN COMPLETELY SUPPRESSES THE CIRCULATION SOUTH OF THE ISLANDS. THE 00Z/13 ECMWF IS BLENDABLE WITH ITS MEAN THROUGH ABOUT 168 HOURS, THEN BECOMES SPECIOUS BY POPPING A NEW--ALBEIT WEAK--LOW NORTH OF THE ALEUTIANS OVER THE WESTERN BERING NEXT WEEKEND. SWITCHING TO THE ECENS MEAN DURING DAY 7 WOULD MITIGATE THE 00Z/13 ECMWF'S OUTLYING SOLUTION AT THAT TIME RANGE. CISCO