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Forecast: Kauai under a Flood Watch as a front approaches

Rain for the western end of the state and sporadic showers for the rest of us
Tracking light winds and then trades pick up
Published: Mar. 21, 2022 at 3:11 AM HST|Updated: 17 hours ago
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HONOLULU (HawaiiNewsNow) - A wall of humidity has taken over the state! With the muggy south winds, we will be seeing passing showers - the intensity has really backed down. Now more spotty. All due to a dissipating front near Kauai.

Moisture along a weakening front will maintain higher shower chances for Kauai through tomorrow. The rest of the state will experience mainly spotty showers under decreasing southeast to south winds. High clouds will gradually diminish as humid conditions persist through Friday. Moderate trade winds will build during the weekend and will hold into next week.

A humid and slightly unstable southerly flow remains in place this afternoon. Showers have been active along a slow moving front just northwest of the state, though Kauai has measured less than a half of an inch of rain today. As an upper level trough moves eastward away from the islands, high clouds are gradually thinning and stability is slowly returning. We have observed brief thunderstorms along the high elevations of the Big Island, but elsewhere, sea breezes have produced scant shower activity. With dew points hovering in the low to mid 70s, humidity remains high.

Tonight and Friday, a humid land and sea breeze regime will prevail from Oahu to the Big Island, while a band of moisture along the dissipated front stalls over Kauai. Upper level ridging will be slowly building, but a lingering mid level trough will maintain some instability. As a result, expect clouds and spotty showers, some briefly heavy, to develop over most islands in the afternoon and diminish during the overnight hours. Cloud cover and shower chances will remain highest over Kauai. There does not appear to much of a flood threat on Kauai tonight and Friday morning, but heavier rainfall will be possible Friday afternoon. Since the flood threat has greatly diminished, the Flash Flood Watch for Kauai has been cancelled.

Surf heights along south facing shores will remain elevated into the weekend as the current south swell becomes reinforced. In the long range, models show quite a bit of activity in the southern hemisphere, which could translate to a few south shore surf events over the next week or so.

Wishing you blue skies and much aloha. Have a wonderful rest of your week and enjoy this Spring weather. Hard to believe how fast this year is going by! So make sure to soak in the beauty of the islands and enjoy times with those you love!

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