HAWAII EXTENDED FORECAST DISCUSSION NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 752 AM EDT MON AUG 26 2013 VALID 00Z TUE AUG 27 2013 - 00Z TUE SEP 03 2013 LATEST GUIDANCE SHOWS AN UPPER LEVEL TROUGH WITH A WEAK SFC-700 MB REFLECTION PASSING FROM EAST TO WEST MID WEEK. SURFACE TRADES WEAKEN AS THE LOW LEVEL TROUGH APPROACHES AND PASSES THROUGH. EXPECT AN INCREASE PRECIPITABLE WATER VALUES AS THE DEEP LAYER TROUGH CROSSES MID WEEK WITH AN UPTICK IN SHOWERS OVER THE REGION. AS THE DEEP LAYER TROUGH MOVES WEST OF THE ISLANDS...PRECIPITABLE WATER VALUES DECLINE AGAIN AND TRADES SHOULD REGAIN SOME STRENGTH FRI-SUN. CONSEQUENTLY SHWRS WILL LIKELY REDUCE IN COVERAGE/INTENSITY AND BE MORE TERRAIN FOCUSED AS A MODEST UPR RIDGE APPROACHES FROM THE EAST OVER THE WEEKEND INTO EARLY NEXT WEEK. PETERSEN