The National Weather Service in Honolulu has updated its forecast, signaling moderate to brisk trade winds to persist into next week with the presence of a high-pressure system well to the north of Hawaii. Showers are expected to continue in windward and mauka regions through the upcoming weekend. "Somewhat active showers will continue across windward and mauka areas into the weekend," the National Weather Service reported. Despite minimal rainfall accumulation so far, the gusty trade winds could ferry brief showers to some leeward areas, particularly through tomorrow, with inversion heights remaining elevated.
According to the National Weather Service's morning observations, cloud coverage and scattered showers have been more prominent on the windward side, while leeward areas have experienced intermittent spillover. A high surface pressure northwest of the state is projected to move eastward, sustaining moderate to locally strong trade winds. The forecast indicates potentially heavier rain in windward locations and occasional showers crossing over into leeward areas, "with some showers occasionally making it over the island terrain into leeward areas as inversion heights remain elevated."
Weather conditions for aviation are likely to feature moderate to locally strong trade winds over the next several days, primarily affecting windward areas during nighttime and early morning periods. Flight conditions in these parts face potential reductions in visibility and ceilings, although VFR conditions are expected to prevail during daylight hours. AIRMET warnings for turbulence and mountain obscuration are currently in effect due to the windy conditions and could persist into the coming days, as reported by the National Weather Service.
Marine activity will also be influenced by the weather pattern, as fresh to strong easterly trades continue through the early part of next week, thanks to a surface ridge anchored north of Hawaii. The National Weather Service has extended a Small Craft Advisory for certain waters around Maui County, and the Big Island, highlighting potential risks for mariners in windier waters and channels, "A Small Craft Advisory will persist each day for the typical windier waters and channels around Maui County and the Big Island." Swells affecting south-facing shores are forecasted to bring above-average surf this weekend, with indicators suggesting advisory-level conditions may materialize.
Residents and visitors along east-facing shores can expect rough, choppy surf as average-height waves continue. Meanwhile, north and west-facing shores should see average surf conditions today, with a shift in swell direction from northwest to north-northeast over the next couple of days, as per the National Weather Service. These changes in surf patterns and persistent advisories should be taken into account by beachgoers and marine operators alike as the week progresses.
