HAWAII EXTENDED FORECAST DISCUSSION NWS HYDROMETEOROLOGICAL PREDICTION CENTER COLLEGE PARK MD 700 AM EST TUE FEB 26 2013 VALID 00Z WED FEB 27 2013 - 00Z WED MAR 06 2013 UPPER RIDGING TO THE WEST OF THE 50TH STATE SHOULD RETREAT WESTWARD THROUGH THE WEEKEND AS TROUGHING SETTLES IN FROM THE NORTHEAST. THE 00Z GFS WAS FARTHEST SOUTHWEST WITH LOWER HEIGHTS WHILE THE ECMWF LIED JUST TO THE NORTHEAST OF THE GEFS/ECMWF ENSEMBLE MEANS. SFC HIGH PRESSURE CELLS SHOULD PROGRESS EASTWARD ALONG 35N TO KEEP TRADES MODEST BUT LOW PW VALUES CLOSER TO A HALF INCH SHOULD LIMIT SHOWER ACTIVITY. BY NEXT WEEK BOTH THE GFS AND ECMWF FORECAST A SLIGHT SURGE IN PW VALUES OVER ONE INCH FOR AT LEAST THE CENTRAL/SOUTHEASTERN ISLANDS BUT THE ECMWF IS ABOUT A DAY EARLIER THAN THE GFS. THE GEFS MEMBERS ARE ROUGHLY IN BETWEEN AND ARE PROBABLY OFFER A BETTER TIMING AT THE MOMENT. FRACASSO