


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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917 FXHW01 KWNH 260752 PMDHI Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 352 AM EDT Thu Jun 26 2025 Valid 00Z Fri 27 Jun 2025 - 00Z Fri 04 Jul 2025 Moderate to locally breezy trades are on tap for the latter part of the week for Hawaii as moisture levels dry out compared to midweek. Some passing showers over windward and mauka areas are possible. An upper ridge will drift over the eastern islands and eventually build to the west by this weekend, but by early next week an upper trough axis could develop northwest of the islands. Moisture looks to increase a bit around Sunday-Monday for possibly increased shower coverage. At the surface, the pressure gradient is forecast to weaken by around Monday-Tuesday, lessening trades through at least part of next week. Tate $$