Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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087 FXHW01 KWNH 240658 PMDHI Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 158 AM EST Mon Nov 24 2025 Valid 00Z Tue 25 Nov 2025 - 00Z Tue 2 Dec 2025 A col will exist within the main subtropical ridge axis to the north of Hawaii through the beginning of the week as a frontal boundary reaches down to about 30 degrees north. This will aid to weaken the low level winds a little with perhaps some veering to the ESE. The typical trade wind based showers can be expected most days through Thanksgiving. Looking ahead to next weekend, the ensemble means are indicating the approach of a relatively strong cold front extending south from a well organized low pressure center near 40 degrees north. The prospects for heavier rainfall exist across the northwestern Islands by Saturday, with northerly winds for areas behind the front, and southeasterly flow ahead of it. High pressure then builds back in north of the Islands by next Monday. Hamrick $$