HONOLULU (KHON2) - High pressure centered far northeast of the state will maintain moderate to locally strong trade winds across the state over the next several days.
With the breezy trades, some of those showers could reach leeward areas at times.
As the high shifts westward and strengthens north of the state, trade winds will strengthen to fresh to near gales during the second half of next week.
A Small Craft Advisory (SCA) remains in effect for the windier channels and waters around Maui County and the Big Island through the weekend.
This SCA for the windier waters will likely continue and expand in coverage during the second half of next week.
Afternoon soundings from Lihue and Hilo had the trade wind inversion between 7000 and 8000 feet, and precipitable water (PW) of 1.15 inches.
Models suggest little change in the inversion height through the upcoming week, while an increase in PW is expected.
The ECMWF shows an increase in PW by Monday morning persisting through Wednesday, a brief decrease Thursday and then another increase Friday.
The GFS shows an increase by Tuesday morning through Wednesday, decrease Thursday, and then not as much of an increase Friday.
In any event, the additional PW corresponds with a mid to upper level low forming over the islands and then drifting to the west.
As such there could be some additional showers Monday through Wednesday.
High Surf Advisory until 6 AM HST Sunday for Niihau, Kauai Leeward, Waianae Coast, Kahoolawe, Maui Leeward West, Kona, Kauai South, East Honolulu, Honolulu Metro, Ewa Plain, Molokai Leeward South, Lanai Leeward, Lanai South, Maui Central Valley South, South Maui/Upcountry, South Haleakala, Big Island South, Big Island Southeast.
Small Craft Advisory until 6 PM HST Monday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.
