Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
300 AM EDT Thu May 15 2025

Valid 00Z Fri 16 May 2025 - 00Z Fri 23 May 2025

The main subtropical high will be centered to the northeast of
Hawaii through early next week. A col developing in the
subtropical ridge axis on Friday near 170 degrees west will then
evolve into an inverted surface trough situated well west of the
state over the weekend. This trough should steadily move westward
with time into early-mid next week with no noticeable effects on
the Islands. The ensemble means are in relatively good agreement.

Low level trade wind flow should generally be easterly most days,
with perhaps some ESE component over the weekend. With the surface
high likely rebuilding north of the state by the middle of next
week, winds should become more ENE. The normal trade wind showers
can be expected through the next 7 days, with no major rainfall 
events expected.


Hamrick