Flood Risk Remains Due to High Moisture, Instability
Alerts (as of 1:00 a.m.)
A Flash Flood Watch is posted for the island of Hawaii through this afternoon.
**Click directly on the images below to make them larger. Charts include: Big Island high/low forecasted temperatures, projected winds, chance of cloud cover, projected localized weather conditions, vog/SO2 forecast and expected wave heights.**
Flood advisories have been posted for the Hilo side through the night and into early this morning. High moisture and unstable conditions mean the unsettled weather pattern will continue today, with the potential for locally heavy rainfall on Maui and the Big Island. A drier and more stable trade wind weather regime is expected to gradually become established across the Aloha State by late Thursday, and will continue into early next week. A disturbance forecast to pass south of the islands early next week could boost trade wind speeds.
Mostly cloudy with windward showers likely. Mostly clear in the morning for the Kona side with partly cloudy skies and scattered showers in the afternoon. A slight chance of thunderstorms exists for the afternoon and evening. Locally heavy rainfall is possible and hazy skies are expected. High temperatures from 82° to 87°. Winds will be east around 15 mph.
UV index at 9 (“very high” exposure level)
Winds will be variable around 5 to 15 mph. Mostly cloudy with windward showers likely. Kona side should be mostly cloudy to start with clearing as the night goes on. Low temperatures from 73° to 78°.
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