Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 815 AM EDT Sat Jun 08 2019 Valid 00Z Sun Jun 09 2019 - 00Z Sun Jun 16 2019 An upper-level weakness will slowly dissipate over the next several days which will support enhancement of shower activity across windward areas. Next week, models/ensembles show rising upper-level heights and a drier air mass as precipitable water values decrease to hover between 1.0-1.25 inches in the early to middle portions of next week. Surface high pressure will build north of the area early next week which will increase the pressure gradient and the trades. Generally light windward showers are expected next week, as precipitable water values remain below normal most of the time. Trades are expected to persistent as moderate to briefly strong as high pressure remains north of the islands trough the end of next week. Petersen