Prognostic Meteorological Discussion
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FXHW01 KWNH 250710
PMDHI

Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
309 AM EDT Thu Apr 25 2024

Valid 00Z Fri Apr 26 2024 - 00Z Fri May 3 2024

The subtropical high that will initially to the north of the state
around 30-35N will shift to the northeast by this weekend.
East-northeasterly trade winds are expected to veer more to the
east or east-southeast as the high retreats and a col develops
within the subtropical ridge axis.  The ensemble guidance has
trended stronger with an inverted trough and potential closed low
in the vicinity of the far northwestern Islands by Monday.

This pattern will favor precipitation chances each day for the
favored east-facing terrain, and conditions will remain mainly dry
for southwestern portions of the Islands. The aforementioned
trough over the far northwestern Islands and its accompanying
surface front will likely be blocked by the subtropical ridge and
remain northwest of the state, keeping the most impactful weather
well offshore through at least the middle of next week.

Hamrick

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