HAWAII EXTENDED FORECAST DISCUSSION NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD 725 AM EDT SUN JUL 31 2011 VALID 00Z MON AUG 01 2011 - 00Z MON AUG 08 2011 31/00Z UPPER-AIR NETWORK SUPPORTS MORE OF A ECMWF SOLUTION FROM 24 HOURS AGO WITH RESPECT TO LINGERING MID-TO UPPER-LEVEL SYSTEM/ENERGY MIGRATING NORTHWEST INVOF KAUAI. WITH UNSTABLE ATMOSPHERE IN PLACE...SHORT-TERM SENSIBLE WEATHER FOCUS WILL BE ON KAUAI WITH POCKET OF INSTABILITY DRIFTING IN A NORTHERLY DIRECTION TO A LOCATION INVOF 30N 160W BY TUESDAY. THERE IS DECENT MODEL AGREEMENT FROM TUESDAY ONWARD WITH THE PREVAILING UPPER-LEVEL HIGH/RIDGE FORMING IN THE CENTRAL PACIFIC...BUT THE DETAILS ARE MIXED ON BOTH THE WESTERN AND EASTERN FLANKS OF THIS RIDGE AXIS. FOR CONTINUITY...THE ECMWF SEEMS A BETTER CHOICE...EMPHASIZING A CLOSED 594DM HIGH CENTER ALONG 30N DURING THE LATTER HALF OF THIS FORECAST PERIOD AND WITH THE WEAK H5 WAVE EMBEDDED IN THE EASTERLIES ALONG 20N 140W. VOJTESAK