ALASKA EXTENDED FORECAST DISCUSSION NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 208 PM EDT SAT MAY 24 2014 VALID 12Z WED MAY 28 2014 - 12Z SUN JUN 01 2014 THE 00Z/24 EUROPEAN CENTRE ENSEMBLE MEAN DIFFERED ENOUGH FROM THE 12Z/23 VERSION ACROSS THE ALASKA REGION AT THE MEDIUM RANGE TO DENOTE A REAL TREND IN THE MODEL SOLUTIONS. IT APPEARS THAT THE HERETOFORE-INTEGRATED WAVE APPROACHING THE GULF FROM THE SOUTHWEST MID-PERIOD MAY WELL SPLIT, WITH MUCH LESS IMPACT FOR THE MAINLAND IN TERMS OF SENSIBLE WEATHER. THE SPLIT MAY BE A SIGN THAT YET ANOTHER ITERATION OF THE HIGH-LATITUDE MAY BE UNFOLDING. REAL TRENDS IN THE MODEL GUIDANCE ALMOST ALWAYS PRECLUDE THE INCORPORATION OF ANY ONE OPERATIONAL RUN, WITH THE HIGHLY DISPARATE, BACK-TO-BACK RUNS OF THE 12Z/23 AND 00Z/24 ECMWF THE PROOF IN THE PUDDING. UNFORTUNATELY, SOME BREAK IN CONTINUITY WAS NECESSARY TO HONOR THE TREND IN THE MEAN. CISCO