HAWAII EXTENDED FORECAST DISCUSSION NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD 630 AM EST SUN DEC 11 2011 VALID 00Z MON DEC 12 2011 - 00Z MON DEC 19 2011 STRONG HIGH PRESSURE NE OF THE ISLANDS SHOULD SUPPORT NEAR MODERATE AND INCREASINGLY MOIST ESERLY ISLAND TRADES INTO MIDWEEK. THIS SEEMS CONSISTENT WITH LATEST SATELLITE IMAGERY. MODELS AND ENSEMBLES ALSO LINGER A MID-UPPER LEVEL TROF/LOW OVER THE ISLANDS INTO EARLY WED....FOLLOWED BY GRADUAL WEAKENING OF THAT FEATURE. INVERTED TROFFING...DEEPENING MOISTURE...AND DESTABILIZING SUPPORT ALOFT SHOULD COMBINE FOR A PATTERN WITH A THREAT FOR LOCALLY HEAVY RAINFALL OVER THE STATE. PROGRESSIVE MID-UPPER LEVEL TROF PASSAGE TO THE NORTH OF THE STATE MAY ALSO GIVE ENOUGH UMPH TO FORCE A TRAILING COLD FRONT SEWD TOWARD THE ISLANDS FRI INTO THE WEEKEND...WITH DRIER FLOW IN THE WAKE OF THE FEATURE. RECENT GFS/ECMWF AND ASSOCIATED ENSEMBLES STILL BEST SUPPORT THIS SCENARIO. SCHICHTEL