Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
356 AM EDT Sun Jun 18 2023

Valid 00Z Mon Jun 19 2023 - 00Z Mon Jun 26 2023

Trade winds look to stay at around moderate levels for the next
couple of days, as the Pacific surface high stays well to the
northeast of Hawaii. Meanwhile, a small upper low is expected to
drift south atop the state. This may allow for a lessening
inversion aloft, which along with a band of moisture coming in
could produce some shower enhancement on Monday in particular.
Given the trades, showers should favor windward and mauka areas.
Shower coverage is likely to lessen by Tuesday and beyond as the
upper low weakens and moves away. The surface high is forecast to
press south and west closer to the state by midweek and beyond,
which should further strengthen trades to widespread breezy to
windy levels. Slightly above average moisture levels may be seen
at times but no major surges of tropical moisture are expected all
week, with the deepest moisture confined to the ITCZ. 


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