Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
755 AM EDT Mon Apr 15 2019

Valid 00Z Tue Apr 16 2019 - 00Z Tue Apr 23 2019

An elongated mid/upper-level weakness will gradually move eastward
away from Hawaii over the next several days, with little to no
impacts on Hawaii in terms of sensible weather. By the weekend,
models/ensembles show broad consensus that upper ridging should
expand across Hawaii from the west central Pacific. An active
frontal zone across the north central Pacific is expected to
remain well north of Hawaii, keeping the state in a trade wind
pattern. Trades should weaken slightly by mid-week as a surface
high north of the state moves away, but moderate trades should
return by late in the week as another surface high builds north of
the state. The pattern will promote a relatively dry air mass
across Hawaii, with relatively low PWs (near or below 1 inch),
keeping shower activity fairly isolated and primarily confined to
windward locations.


Ryan