


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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214 FXHW01 KWNH 180654 PMDHI Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 254 AM EDT Fri Jul 18 2025 Valid 00Z Sat 19 Jul 2025 - 00Z Sat 26 Jul 2025 Surface high pressure well to the north of the state will result in a fairly typical easterly trade wind pattern for at least the next week or so. This pattern keeps clouds and showers generally favoring the typical windward locations. A broad upper trough/low nearby may bring a slight uptick in showery activity this weekend, but no major rainfall events are currently expected as the ITCZ remains well to the south and no major frontal zones affect the state. More stable conditions are expected to return by next week as an upper ridge builds back over Hawaii. Hamrick $$