HAWAII EXTENDED FORECAST DISCUSSION NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD 710 AM EDT SAT MAY 12 2012 VALID 00Z SUN MAY 13 2012 - 00Z SUN MAY 20 2012 CURRENT MID LEVEL TROUGH OVER THE REGION WILL BE REINFORCED SUNDAY AND MONDAY AS PROGRESSIVE RIDGING BUILDS EASTWARD ACROSS THE CENTRAL PACIFIC. SOME DE AMPLIFICATION OF THE PACIFIC FLOW PATTERN EVOLVES MID WEEK WITH THE SRN EDGE OF THE WESTERLIES RETREATING NWD OF 30N. TRADE FLOW REMAINS DISRUPTED UNTIL MID WEEK WITH A RETURN OF LIGHT TO MODERATE TRADES WHICH SHOULD PERSIST INTO THE WEEKEND. LOWER PW VALUES PERSIST ACROSS THE REGION UNTIL MONDAY WHEN HIGHER AMOUNTS POOL ALONG A THIN NARROW FRONTAL BOUNDARY ACROSS FAR NORTHWEST PORTIONS OF THE ISLAND CHAIN WITH LIGHT SHOWERS. OTHERWISE ONLY THE POTENTIAL OF A FEW LIGHT OROGRAPHIC SHOWERS AS LIGHT TRADES RETURN. ROSENSTEIN