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Unsettled Weather Possible for Weekend

July 22, 2017, 1:40 AM HST
* Updated July 21, 10:43 PM
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Image: James Grenz

Alerts (as of 1:00 a.m.)

Special Weather Statement: Coastal flooding is possible as spring tides occur. The greatest potential for that will be in the afternoon hours when the tide is expected to be the highest. This coupled with Fernanda swell could lead to higher than usual run-up. This could last through the weekend.

High Surf Advisory: East facing shores of the Big Island through noon Monday.

Small Craft Advisory: East to northeast winds up to 25 knots through 6:00 a.m. Saturday.

Check our breaking news section for any urgent weather alerts or updates to the weather alerts listed above.


**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.**



Looking Ahead

An unsettled period is in the forecast for this weekend and into early next week as an upper level disturbance interacts with low level moisture riding in with the trades, and then with deeper tropical moisture associated with weakening and dissipating Tropical Storm Fernanda early next week. Drier weather with lower humidity and strong trades will return by midweek.



Today & Sunday

We expect variable winds up to 15 mph. High temperatures are forecast from 83° to 88°. Mostly cloudy skies with occasional scattered showers for the Hilo side and scattered leeward showers. Showers could become heavy Sunday over interior areas.

UV index at 12 (“extreme” exposure level)


Tonight & Sunday Night

Variable winds are forecast up to 15 mph. Mostly cloudy skies with occasional scattered windward showers and scattered leeward showers. Sunday heavy showers are possible. Low temperatures from 72° to 77°.


Our Big Island Now Weather homepage always includes daily: Sunrise | Sunset | Moonrise | Moonset | Moon Phase | Live Weather Cams | 5-day Forecast | Current Temperature & Conditions

**Click here for your detailed Big Island surf report.**

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

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