Today: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 85 near the shore to around 72 at 4000 feet. East winds up to 15 mph. Chance of rain 70 percent.
Tonight: Mostly cloudy. Numerous showers in the evening, then frequent showers after midnight. Lows around 68 near the shore to around 54 at 4000 feet. Northwest winds up to 10 mph. Chance of rain 80 percent.
Thursday: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 85 near the shore to around 72 at 4000 feet. West winds 10 to 15 mph shifting to the east in the afternoon. Chance of rain 70 percent.
Kona
Today: Mostly sunny in the morning, then partly sunny with scattered showers in the afternoon. Highs 83 to 88 near the shore to around 70 near 5000 feet. West winds up to 10 mph. Chance of rain 40 percent.
Tonight: Mostly cloudy in the evening then becoming partly cloudy. Isolated showers. Lows 69 to 75 near the shore to around 55 near 5000 feet. Light winds. Chance of rain 20 percent.
ARTICLE CONTINUES BELOW AD
ARTICLE CONTINUES BELOW AD
Thursday: Mostly sunny in the morning, then mostly cloudy with scattered showers in the afternoon. Highs 83 to 88 near the shore to around 70 near 5000 feet. Light winds. Chance of rain 40 percent.
Waimea
Today: Breezy. Partly sunny with scattered showers. Highs around 84 near the shore to 72 to 81 near 3000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 50 percent.
Tonight: Mostly cloudy with scattered showers. Lows around 68 near the shore to 56 to 62 near 3000 feet. East winds up to 15 mph. Chance of rain 50 percent.
Thursday: Partly sunny. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 84 near the shore to 72 to 81 near 3000 feet. East winds up to 15 mph. Chance of rain 70 percent.
Kohala
Today: Breezy. Partly sunny with scattered showers. Highs around 84 near the shore to 72 to 81 near 3000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 50 percent.
ARTICLE CONTINUES BELOW AD
Tonight: Mostly cloudy with scattered showers. Lows around 68 near the shore to 56 to 62 near 3000 feet. East winds up to 15 mph. Chance of rain 50 percent.
Thursday: Partly sunny. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 84 near the shore to 72 to 81 near 3000 feet. East winds up to 15 mph. Chance of rain 70 percent.
South Big Island
Today: Breezy. Mostly sunny in the morning, then partly sunny with isolated showers in the afternoon. Highs around 87 near the shore to around 74 near 5000 feet. East winds up to 20 mph. Chance of rain 20 percent.
Tonight: Partly cloudy. Breezy. Isolated showers in the evening. Lows around 70 near the shore to around 53 near 5000 feet. Northeast winds up to 20 mph. Chance of rain 20 percent.
Thursday: Breezy. Mostly sunny in the morning, then partly sunny with isolated showers in the afternoon. Highs around 87 near the shore to around 74 near 5000 feet. East winds up to 20 mph. Chance of rain 20 percent.
Puna
ARTICLE CONTINUES BELOW AD
Today: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 85 near the shore to around 72 at 4000 feet. East winds up to 15 mph. Chance of rain 70 percent.
Tonight: Mostly cloudy. Numerous showers in the evening, then frequent showers after midnight. Lows around 68 near the shore to around 54 at 4000 feet. Northwest winds up to 10 mph. Chance of rain 80 percent.
Thursday: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 85 near the shore to around 72 at 4000 feet. West winds 10 to 15 mph shifting to the east in the afternoon. Chance of rain 70 percent.
Waikoloa
Today: Sunny in the morning then becoming partly sunny. Breezy. Highs around 87 near the shore to 71 to 77 above 4000 feet. North winds up to 20 mph.
Tonight: Partly cloudy. Isolated showers in the evening. Lows 70 to 75 near the shore to 51 to 58 above 4000 feet. East winds up to 15 mph. Chance of rain 20 percent.
Thursday: Sunny in the morning then becoming partly sunny. Highs around 87 near the shore to 71 to 77 above 4000 feet. Southeast winds up to 15 mph shifting to the north in the afternoon.
Detailed Forecast
Synopsis
Moderate to breezy easterly trade winds will continue through early next week, with clouds and showers favoring windward and mauka locations as pockets of moisture move through. Expect some showers to carry over into leeward areas periodically due to a weak upper disturbance in the area, especially overnight through the morning periods.
Discussion
Guidance remains in good agreement through the weekend and depicts the subtropical ridge remaining anchored north of the state. Although a mostly stable summertime regime is expected, a weak upper low drifting overhead will introduce some variability to the pattern, especially as pockets of moisture move through. A combination of the added instability associated with this upper feature, bands of moisture moving through, and an elevated inversion will support periods of showery conditions. Breezy easterly trades will focus most of the shower coverage over windward and mauka locations, with some becoming briefly heavy and spilling over into our leeward areas that have become dry over the past few weeks.
Aviation
Moderate to locally breezy ENE trades will remain in place today and tonight, strongest during the late morning and afternoon hours when some gustiness can be expected. Clouds and showers will be most prevalent in windward and mauka areas this morning, with a few showers reaching leeward locales at times. Some MVFR cigs/vsbys will accompany the showers in windward areas, with VFR conditions expected in leeward locales.
AIRMET Sierra remains in effect for mountain obscuration over windward sections of Kauai, Molokai, Maui and the Big Island. Conditions may expand to windward Oahu later this morning. Improving conditions are expected in all areas by noon.
AIRMET Tango remains in effect for moderate turbulence over and downwind of the terrain of all islands. This AIRMET will likely remain in place through the day.
Marine
A surface high pressure system located far northeast of the state will maintain moderate to locally strong easterly trade winds through this weekend. A Small Craft Advisory (SCA) has been extended through Friday night for the typically windier waters adjacent to the islands of Maui County and the Big Island. The latest forecast keeps SCA conditions in these same waters this weekend.
A mix of small, long-period south and south-southwest (170-220 degrees) swells will maintain small background surf along south facing shores through this weekend. Choppy, moderate surf will persist along east facing shores due to the trade winds locally, and upstream of the islands. Expect some minor fluctuations in surf heights along east facing shores in response to small changes in trade wind speeds into early next week. The current small, short-period northwest (320 degrees) swell will linger into Friday. An out-of-season, medium-period west-northwest (300-310 degrees) swell generated by former Northwest Pacific Typhoon Guchol is forecast to arrive this weekend. This swell is expected to provide a boost to surf along exposed north and west facing shores from Sunday into early next week.
HFO Watches/Warnings/Advisories
Small Craft Advisory until 6 AM HST Saturday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.
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