A more typical trade wind pattern will become established across the island chain today, with moderate trade winds focusing clouds and showers over windward and mauka areas through Saturday. A front will move down the island chain late Sunday through Monday, bringing breezy northeasterly trades and drier air in its wake.
Shra continues to diminish to more of -SHRA/VCSH, with the exception of the windward portions of the Big Island and Maui. However, even there should be a gradually downward trend in activity through the day. Earlier TS east of the Big Island has also diminished with no TS expected this afternoon. Otherwise, conditions are largely VFR across the board with brief periods of MVFR in passing -SHRA. Trade winds return today with typical VCSH chances through the period.
AIRMET Sierra for mountain obscuration remains in effect abv 020 for north through east areas from Oahu to Big Island. Conditions may improve enough through the morning to allow for the cancellation of AIRMET Sierra, but planning to leave it in place for now.
AIRMET Tango for turbulence is no longer in effect. However, continuing to monitor the potential for low level light-mod turb state wide.
Issued at 350 AM HST Fri Oct 30 2026
A weak trough near the eastern end of the state that has been a focus for showers and thunderstorms over the past few days will slowly move southward and dissipate today. Therefore, expect shower and thunderstorm coverage to gradually reduce over the next 24 hours. Ridging to the north will gradually drive moderate to fresh easterly winds over most waters today into the weekend. A Small Craft Advisory will likely be needed late this weekend into early next week due to a combination of increasing trade winds and seas of 10 feet or greater as a result of an incoming north- northwest swell.
A small, short period north-northeast swell will fill in today and maintain small surf along north-facing shores. A larger, long- period northwest swell will begin to arrive late Saturday. This swell will likely push north and exposed west shore surf above the High Surf Advisory threshold Sunday into Monday. The swell will shift slightly more northerly and may briefly build further on Monday before dropping Tuesday. Depending on the exact direction, a Marine Weather Statement may eventually need to be issued to due the potential for harbor surges at Kahului and Hilo.
A small, medium period south swell will peak today, though surf along south-facing shores will remain below High Surf Advisory levels. This swell will then gradually decline through the weekend. During the first half of next week, south shore surf will return to below seasonal averages.
Surf along most east-facing shores will rise slightly today due to wrap from the north and southerly swells. Additionally, east- facing shorelines exposed to the larger north swell Sunday night into Monday will have the potential for advisory level surf during that time.
None.
