HAWAII EXTENDED FORECAST DISCUSSION NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD 738 AM EDT SAT MAR 31 2012 VALID 00Z SUN APR 01 2012 - 00Z SUN APR 08 2012 MID LEVEL RIDGING WILL PERSIST OVER THE REGION THRU THE WEEKEND. GUIDANCE INDICATES WEAK MID LEVEL TROF DEVELOPMENT WEST OF THE REGION BY SUNDAY WITH A GRADUAL SHIFT EASTWARD WHILE WEAKENING. BY MID WEEK ALL MODELS INDICATE THE DEVELOPMENT OF ANOTHER TROF AND INCREASING POSSIBLITY OF A CLOSED TO CUT OFF MID LEVEL LOW WEST OF THE ISLANDS NEAR AND EAST OF THE DATELINE. TRADES FLOW SHOULD INCREASE TODAY AS HIGH PRESSURE MOVES EAST NORTH OF THE ISLANDS THEN WEAKENING AND REMAINING WEAK AND MORE SERLY INTO NEXT WEEK. POTENTIAL FOR HEAVY PROLONGED RAINFALL BEGINNING MID WEEK AND LONGER WITH UNCERTAIN DETAILS BUT INCREASING MODEL AND ENSEMBLE CONSENSUS. ROSENSTEIN