Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 830 AM EDT Sat May 19 2018 Valid 00Z Sun May 20 2018 - 00Z Sun May 27 2018 Amplified flow will remain confined to the mid-latitudes of the Pacific throughout the period with general subtropical ridging accompanied by intermittent breaks extending over the Hawai`ian island chain. At the surface, little change in the climatological trade wind regime is expected with occasional upticks in wind strength given tightening of synoptic-scale gradients. Sustained winds could reach the 25 knot plus range during heightend periods of trades. Otherwise, models suggest little change in this regime into much of next week. Accordingly, trade driven showers will be commonplace within an environment characterized by generally a 1 to 1.25 inch precipitable water air mass. The better moisture fluxes appear continued closer to the Intertropical Convergence Zone. Rubin-Oster