A high pressure system will linger north of the Hawaiian Islands producing moderate to breezy trades through the middle of next week with minor fluctuations in speed. Brief pulses of enhanced showers will roll through on the trades during this time period, with showers favoring windward mountain areas in the overnight to early morning hours.
Va SIGMET November in effect for Mt. Kilauea eruption in the south-central portions of Big Island. SEE VA SIGMET November for more detailed information. Expect this to continue until the eruption subsides, but based on overall wind trajectory, no ash threat near terminals is expected.
Otherwise, breezy trades will continue with isolated MVFR ceilings and visibility in any passing shower, mainly windward and mountain areas.
AIRMET Sierra was cancelled this morning as visibility has improved.
AIRMET Tango will continue today for tempo moderate turbulence downwind of terrain below 9000 ft.
High pressure north of the islands maintains fresh to strong trades well into next week. The Small Craft Advisory (SCA) remains in effect for the typically windy waters around Maui County and the Big Island and the Kaiwi Channel. The SCA will likely be further expanded in areal coverage later today as trades undergo modest strengthening.
A short period NNW swell peaked at the outer buoys early this morning, and could provide a small boost to north shore surf this afternoon. This swell is also combined with gradually declining mid- long period swell (12 to 16 seconds) and will keep small surf in place through tomorrow. Both of these swells drop off by Monday, allowing surf to drop to tiny levels through much of the week before a small northwest arrives Thursday.
A mid to long period south-southwest swell (15 seconds) will keep above average surf in place today over south shores, then decline tomorrow and remain small through much of the week with background south swells. A small long period swell is possible next weekend.
Rough trade wind swell will produce above average surf for E shores through Tuesday before declining with weakening trades mid- week. Expect some wrap of NNW swell for exposed shorelines through at least today
Small Craft Advisory until 6 AM HST Monday for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Kaiwi Channel-Maalaea Bay-Maui County Leeward Waters-Pailolo Channel.
