The National Weather Service has issued a forecast for increased humidity, heavy showers, and possible thunderstorms in Honolulu, with the western side of Hawaii most affected. A low-pressure system to the northwest is creating unstable conditions, with Kauai at the highest risk for flash flooding. The overnight report indicated thunderstorms passed northwest of Kauai, while other regions experienced lighter rain. The forecast noted, "it is the lack of a low-level forcing mechanism that has prevented more widespread heavy rain from developing around Kauai," according to the National Weather Service.
Residents of Kauai are advised to remain alert as the Flood Watch continues today. While no significant changes are expected, small movements could lead to increased instability, bringing heavy rainfall and potential flash floods. The current conditions show "instability on the order of 1500 j/kg and equilibrium levels around 40kft over Kauai," which could result in strong convection and heavy downpours, as reported by the National Weather Service.
The National Weather Service has issued a mixed aviation forecast, with mostly VFR conditions expected, but potential MVFR and IFR disruptions due to increased shower activity and thunderstorms, particularly over Kauai. The National Weather Service warns that "isolated instances of heavy rainfall will still be capable of producing IFR on a localized basis." On the maritime front, moderate southerly breezes are expected along western shores, with a chance of thunderstorms near Kauai through Thursday. Surf conditions are expected to remain mild, with a decline in the NW swell and a southern swell, while seas are likely to be rough along eastern coasts due to SE winds.
