Featured Articles

Flash Flood Watch in Effect, Heavy Showers Expected

August 18, 2015, 1:50 AM HST
* Updated August 18, 1:59 PM
Listen to this Article
2 minutes
Loading Audio...
A
A
A

Alerts

A Flash Flood Watch is in effect for all Hawaiian island through tonight at 6:00 p.m. The National Weather Service says an extremely moist and unstable atmosphere could again spawn the development of slow-moving heavy downpours that could lead to flash flooding.

Any more urgent flood alerts will be posted at this link as they occur. >> CURRENT FLOOD ADVISORIES / WARNINGS

**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.**

    +
    SWIPE LEFT OR RIGHT

 

ARTICLE CONTINUES BELOW AD

Looking Ahead

ARTICLE CONTINUES BELOW AD

Winds will be rather light for the next few days. Today could be a replay of yesterday with tropical humidity and daytime sea breezes giving way to locally heavy afternoon showers and even thundershowers. There will also be the possibility for volcanic haze over the smaller islands through the middle part of the week. More stable weather and trade winds are expected to return late in the week as the disturbance moves away from the state.

 

Today

ARTICLE CONTINUES BELOW AD

Partly sunny skies are expected in the morning with scattered windward showers. Leeward spots will be mostly sunny with mostly cloudy skies building in the afternoon. Scattered to numerous showers are expected for upslope areas as clouds build. There is a chance of thunderstorms and locally heavy rainfall as well. Winds will be light and variable up to 15 mph so our high temperatures, expected from 83° to 89°, will likely feel warmer due to the humidity.

UV index at 12 (“extreme” exposure level)

 

Tonight

Variable winds are forecasted up to 15 mph. Partly cloudy skies and scattered showers are expected in windward spots. Leeward areas should gradually clear as the night goes on.  Low temperatures from 73° to 78° are expected.

 

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 / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: UHSOEST

Image: UHSOEST

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Subscribe to our Newsletter

Stay in-the-know with daily or weekly
headlines delivered straight to your inbox.
Cancel
Mahalo for Subscribing
×

Comments

This comments section is a public community forum for the purpose of free expression. Although Big Island Now encourages respectful communication only, some content may be considered offensive. Please view at your own discretion. View Comments