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Hawaii Extended Forecast Discussion
(Caution: Version displayed is not the latest version. - Issued 1225Z Nov 17, 2014)
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Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
725 AM EST Mon Nov 17 2014

Valid 00Z Tue Nov 18 2014 - 00Z Tue Nov 25 2014

The global numerical guidance continues to indicate a switch from
polar westerlies to tropical easterlies in the flow across Hawai'i
during the next week. The energetic trough sharpening to the east
of the islands has turned the surface winds to the north--bringing
an abrupt end to the focused, baroclinically-driven showers of
late. By early Friday, the first return-flow, tropical moisture
should begin to lift across the Big Island, with the entire state
in the thick of the humid air by Saturday. Before then, preciously
few showers are anticipated--likely into the middle of next week
even once warm advection begins. Next Saturday and Sunday look
showery statewide, with many locations receiving a half-inch to
one inch of rainfall.