


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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059 FXHW01 KWNH 230707 PMDHI Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 307 AM EDT Sat Aug 23 2025 Valid 00Z Sun 24 Aug 2025 - 00Z Sun 31 Aug 2025 A typical trade wind pattern, moderately breezy at times, will prevail with upper ridging waxing and waning near Hawaii for the next week. Upper troughing digs into the Papahanaumokuakea Marine National Monument Sunday and Monday before ridging builds back in aloft to the northwest. While a couple easterly waves are noted over the next couple of days that could brush by the Island of Hawai`i, the ITCZ remains safely south of the main Hawaiian Islands. The overall pattern supports a typical pattern with drier conditions and not much in the way of rainfall except for typical windward and mauka areas. Guidance shows good agreement on the overall setup through the period. Roth $$