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Hawaii Extended Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 0744Z Jun 17, 2024)
 
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Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
344 AM EDT Mon Jun 17 2024

Valid 00Z Tue Jun 18 2024 - 00Z Tue Jun 25 2024

Today's models and ensembles continue to show a persistent trade
pattern with high pressure to the north (drifting incrementally
westward with time) supporting brisk winds and primarily
windward/mountain focus for showers.  Slow strengthening of the
surface high mid-late week should yield relatively stronger winds
from Wednesday into the weekend.  Guidance is fairly consistent in
depicting the moisture fluctuations that may affect the generally
light to moderate rainfall totals forecast during the period.  An
upper low initially tracking westward just south of the state will
bring a modest band of moisture through the islands from east to
west during Tuesday-Wednesday, followed by a drier band on
Thursday and a moist pocket passing through Friday-Saturday.  With
this latter moisture, the highest precipitable water values should
cross the northwestern islands.  Then expect moisture to decrease
Sunday-Monday.

Rausch