Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
340 AM EDT Thu Mar 13 2025

Valid 00Z Fri 14 Mar 2025 - 00Z Fri 21 Mar 2025


Windy trades are likely to persist through Thursday with a strong
surface high to the north. Some moisture in place will produce 
showers favoring windward and mauka areas, with some spilling into
leeward areas. By late week though, the surface high should 
weaken and drift southeastward, allowing for winds to gradually 
lessen to more moderate levels by Saturday. Winds may raise 
somewhat to more breezy levels into next week. Meanwhile, an upper
trough axis is forecast to approach from the west with some 
lowering heights over Hawaii. This plus a front stalling to the 
west will draw higher moisture northward across the state as mean 
flow turns southeasterly. Thus more shower coverage and higher 
rain totals are likely over the weekend into early next week for
all islands, but there could be a particular focus over the 
western islands that are closer to the front. More typical trade 
winds may return around midweek while moisture levels gradually 
fall as the trough pulls away.


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