Hilo

Today: Partly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 82 to 88 near the shore to around 73 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 50 percent.

Tonight: Mostly cloudy with scattered showers. Lows around 69 near the shore to around 54 at 4000 feet. Northwest winds up to 15 mph. Chance of rain 50 percent.

Friday: Partly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 82 to 88 near the shore to around 73 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 50 percent.

Kona

Today: Mostly sunny in the morning then becoming partly sunny. Isolated showers. Highs 83 to 88 near the shore to around 70 near 5000 feet. Southwest winds up to 10 mph shifting to the west in the afternoon. Chance of rain 20 percent.

Tonight: Mostly cloudy in the evening then becoming partly cloudy. Isolated showers. Lows 72 to 77 near the shore to around 55 near 5000 feet. Light winds. Chance of rain 20 percent.

Friday: Mostly sunny in the morning then becoming partly sunny. Isolated showers. Highs 83 to 88 near the shore to around 70 near 5000 feet. Southwest winds up to 10 mph. Chance of rain 20 percent.

Waimea

Today: Breezy. Partly sunny with isolated showers. Highs around 82 near the shore to 76 to 81 near 3000 feet. East winds 10 to 25 mph with gusts to 45 mph. Chance of rain 20 percent.

Tonight: Breezy. Mostly cloudy with isolated showers. Lows around 69 near the shore to 57 to 62 near 3000 feet. East winds 10 to 25 mph decreasing to up to 25 mph after midnight. Gusts up to 45 mph. Chance of rain 20 percent.

Friday: Breezy. Partly sunny with isolated showers. Highs around 82 near the shore to 76 to 81 near 3000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 20 percent.

Kohala

Today: Breezy. Partly sunny with isolated showers. Highs around 82 near the shore to 76 to 81 near 3000 feet. East winds 10 to 25 mph with gusts to 45 mph. Chance of rain 20 percent.

Tonight: Breezy. Mostly cloudy with isolated showers. Lows around 69 near the shore to 57 to 62 near 3000 feet. East winds 10 to 25 mph decreasing to up to 25 mph after midnight. Gusts up to 45 mph. Chance of rain 20 percent.

Friday: Breezy. Partly sunny with isolated showers. Highs around 82 near the shore to 76 to 81 near 3000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 20 percent.

South Big Island

Today: Mostly sunny in the morning then becoming partly sunny. Breezy. Highs around 86 near the shore to around 71 near 5000 feet. East winds up to 25 mph.

Tonight: Partly cloudy. Breezy. Lows 68 to 74 near the shore to around 53 near 5000 feet. Northeast winds up to 25 mph decreasing to up to 15 mph after midnight.

Friday: Mostly sunny in the morning then becoming partly sunny. Breezy. Highs around 86 near the shore to around 71 near 5000 feet. East winds up to 25 mph.

Puna

Today: Partly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 82 to 88 near the shore to around 73 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 50 percent.

Tonight: Mostly cloudy with scattered showers. Lows around 69 near the shore to around 54 at 4000 feet. Northwest winds up to 15 mph. Chance of rain 50 percent.

Friday: Partly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 82 to 88 near the shore to around 73 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 50 percent.

Waikoloa

Today: Sunny in the morning then becoming partly sunny. Windy. Highs 84 to 89 near the shore to 70 to 76 above 4000 feet. Northeast winds up to 30 mph.

Tonight: Mostly clear. Windy. Lows 72 to 77 near the shore to 51 to 58 above 4000 feet. East winds up to 30 mph shifting to the southeast up to 20 mph after midnight.

Friday: Sunny in the morning then becoming partly sunny. Breezy. Highs 84 to 89 near the shore to 70 to 76 above 4000 feet. Northeast winds up to 20 mph.

Detailed Forecast

Synopsis

Breezy easterly trade winds will continue through early next week, with clouds and showers favoring windward and mauka areas.

Discussion

Guidance remains in good agreement and depicts a return of a more typical trade wind pattern today, which will persist into next week as strong high pressure remains anchored to the north. Pockets of low-level moisture moving through from east to west will enhance shower coverage periodically over windward areas, mostly overnight through the morning periods. Rainfall accumulations will be minimal through the period, with little to no rain expected over most leeward areas.

Aviation

A vast field of broken to overcast stable low clouds extends east from the islands and will likely create MVFR ceilings across windward shores and slopes through today. Windward TAF sites may see MVFR ceilings from time to time. Our airmass is rather stable, so showers will not be heavy enough to impact visibilities significantly. Blustery trade winds will continue for the next day or so.
AIRMET Tango remains in effect for tempo moderate turbulence below 9000 feet over and immediately south through west of mountains on all islands. AIRMET Sierra remains in effect for tempo mountain obscuration for Maui, Molokai, Oahu, and Kauai, and the Big Island.

Marine

A high pressure system building in the Central Pacific basin over the next few days will keep fresh to strong trade winds blowing across the region through next week Wednesday. The Small Craft Advisory has decreased in coverage this morning, back to the windier waters around Maui and the Big Island.
No significant swells are expected over the next seven days with only small surf heights forecast into early next week. Surf along east facing shores will remain small and choppy, driven by trade wind wave energy. A small long period south-southwest (200 degree) background swell will move into the islands from Sunday through Tuesday with only a small increase in the surf heights along south facing shores.

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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Data Courtesy of NOAA.gov