Honolulu is bracing for a wetter end to the week as a frontal boundary approaches Kauai, bringing with it a notable increase in rain chances, particularly over the state’s western regions. According to NWS Honolulu, the weather shift is due in part to a weakening high pressure system to the northwest, and the impending front that’s expected to stall near Oahu between Thursday and Friday. The forecast indicates that this could potentially cause localized nuisance flooding or ponding, particularly on north Kauai as the front moves in and winds weaken.
The weakening high pressure is currently generating milder south to southeasterly winds but will lead to lighter breezes and potential seabreezes that could drive clouds and showers to develop over leeward and interior spots. Nighttime land breezes may clear away clouds and showers, especially over the eastern half of the state. Nevertheless, the influx of volcanic air pollution, more commonly known as vog, will likely become more widespread in the same period.
Moving into the weekend, a return of breezy to locally strong trade winds is on the horizon, which should help clear out the vog to the southwest of the state. A showery trade wind pattern is also anticipated, with the most significant moisture expected to hit the islands’ western reaches…