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Hawaii Extended Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 0749Z Jun 20, 2025)
 
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Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
348 AM EDT Fri Jun 20 2025

Valid 00Z Sat 21 Jun 2025 - 00Z Sat 28 Jun 2025


On Friday, moderate trades with a few showers in windward/mauka 
areas are likely. But this weekend, a surface high is forecast to 
strengthen and edge closer to the state, which will increase winds
as the pressure gradient tightens. Drier air will also be in 
place and limit shower coverage, so conditions favorable for fires
may be a concern.

Early next week, trades should return to moderate to locally 
breezy levels. Meanwhile a weak low aloft may allow for a raised 
inversion while waves of higher moisture move through. This should
lead to a somewhat wetter trade wind pattern next week. Moisture 
levels look to peak around Tuesday-Wednesday. Widespread heavy 
rain is not expected though.


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