Today: Occasional showers in the morning, then occasional showers and slight chance of thunderstorms in the afternoon. Highs 73 to 79 near the shore to 57 to 62 at 4000 feet. North winds up to 15 mph. Chance of rain near 100 percent.
Tonight: Cloudy with occasional showers. Lows 61 to 67 near the shore to around 55 at 4000 feet. Northwest winds up to 10 mph. Chance of rain 90 percent.
Friday: Cloudy with showers likely. Highs 74 to 80 near the shore to around 61 at 4000 feet. Northeast winds around 10 mph. Chance of rain 70 percent.
Kona
Today: Mostly cloudy. Scattered showers and slight chance of thunderstorms in the afternoon. Highs around 82 near the shore to around 63 near 5000 feet. Light winds. Chance of rain 50 percent.
Tonight: Cloudy with scattered showers. Lows around 69 near the shore to 45 to 52 near 5000 feet. Light winds. Chance of rain 50 percent.
ARTICLE CONTINUES BELOW AD
ARTICLE CONTINUES BELOW AD
Friday: Cloudy with scattered showers. Highs 79 to 84 near the shore to around 62 near 5000 feet. East winds around 10 mph shifting to the northwest in the afternoon. Chance of rain 50 percent.
Waimea
Today: Breezy. Occasional showers in the morning, then occasional showers and slight chance of thunderstorms in the afternoon. Highs around 74 near the shore to 61 to 71 near 3000 feet. East winds 10 to 25 mph with gusts to 45 mph. Chance of rain near 100 percent.
Tonight: Cloudy and breezy. Occasional showers in the evening, then showers likely after midnight. Lows 61 to 69 near the shore to 52 to 60 near 3000 feet. East winds up to 25 mph decreasing to up to 15 mph after midnight. Chance of rain 90 percent.
Friday: Cloudy. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 75 near the shore to 62 to 71 near 3000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.
Kohala
Today: Breezy. Occasional showers in the morning, then occasional showers and slight chance of thunderstorms in the afternoon. Highs around 74 near the shore to 61 to 71 near 3000 feet. East winds 10 to 25 mph with gusts to 45 mph. Chance of rain near 100 percent.
ARTICLE CONTINUES BELOW AD
Tonight: Cloudy and breezy. Occasional showers in the evening, then showers likely after midnight. Lows 61 to 69 near the shore to 52 to 60 near 3000 feet. East winds up to 25 mph decreasing to up to 15 mph after midnight. Chance of rain 90 percent.
Friday: Cloudy. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 75 near the shore to 62 to 71 near 3000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.
South Big Island
Today: Mostly cloudy. Breezy. Scattered showers and slight chance of thunderstorms in the afternoon. Highs around 81 near the shore to around 63 near 5000 feet. East winds up to 25 mph. Chance of rain 50 percent.
Tonight: Breezy. Cloudy with scattered showers. Lows around 71 near the shore to around 49 near 5000 feet. Northeast winds up to 20 mph. Chance of rain 40 percent.
Friday: Cloudy with scattered showers. Highs around 80 near the shore to around 62 near 5000 feet. East winds 10 to 15 mph. Chance of rain 40 percent.
Puna
ARTICLE CONTINUES BELOW AD
Today: Occasional showers in the morning, then occasional showers and slight chance of thunderstorms in the afternoon. Highs 73 to 79 near the shore to 57 to 62 at 4000 feet. North winds up to 15 mph. Chance of rain near 100 percent.
Tonight: Cloudy with occasional showers. Lows 61 to 67 near the shore to around 55 at 4000 feet. Northwest winds up to 10 mph. Chance of rain 90 percent.
Friday: Cloudy with showers likely. Highs 74 to 80 near the shore to around 61 at 4000 feet. Northeast winds around 10 mph. Chance of rain 70 percent.
Waikoloa
Today: Mostly cloudy. Windy. Scattered showers in the morning, then scattered showers and slight chance of thunderstorms in the afternoon. Highs 79 to 84 near the shore to around 63 above 4000 feet. Northeast winds up to 30 mph. Chance of rain 50 percent.
Tonight: Breezy. Cloudy with scattered showers. Lows around 71 near the shore to 49 to 54 above 4000 feet. Southeast winds up to 25 mph shifting to the east up to 15 mph after midnight. Chance of rain 50 percent.
Friday: Cloudy. Scattered showers in the morning. Highs 79 to 84 near the shore to around 62 above 4000 feet. Northeast winds 10 to 15 mph. Chance of rain 40 percent.
Detailed Forecast
Synopsis
A wet and breezy trade wind pattern will persist through Friday, with rainfall favoring windward and mauka areas. Expect clearer skies and drier conditions over the holiday weekend, with winds trending lighter Sunday and Monday.
Discussion
High pressure far north of the islands will drive breezy trade winds into the weekend. Wind speeds will diminish and become fairly light Sunday and Monday as this high moves eastward. A new high building northwest of the area will then bring increasing northeast trade winds early next week. A developing upper low north of Kauai enhanced showers and kept high cloud cover across the state overnight. Rainfall was been especially heavy on Kauai and Oahu, but this activity has decreased this morning. Models show available moisture will decrease over the next 24 hours, easing flooding concerns. However, lingering instability keeps a chance for thunderstorms in the forecast for the Big Island interior this afternoon.
The upper low will move east of the islands Friday night and Saturday, allowing upper ridging to build over the area from the west. Expect a much drier trade wind weather pattern this weekend. The high building northwest of the area early next week may push a weak front across the islands around Tuesday, bringing a brief increase in windward showers. Otherwise, rainfall will be limited, favoring windward areas.
Aviation
The wet and breezy trade wind pattern will persist through the 24-Hr forecast period due to moisture being drawn into the area as an upper trough moves through. MVFR conditions with periods of IFR CIGS/VSBYS in showers will continue, especially for windward and mauka areas.
AIRMET SIERRA remains in effect due to mountain obscuration above 2000 feet for north through east sections of all islands.
AIRMET TANGO remains in effect below 8000 feet over and immediately south through west of mountains due to tempo moderate turbulence. AIRMET TANGO also remains in effect between FL180 and FL320 for tempo moderate turbulence.
Marine
Fresh to strong trades will continue over local waters through Thursday before weakening slightly over the weekend. The Small Craft Advisory is out for all waters through today and likely scaled back to the typical windy zones around Maui County and the Big Island on Friday.
A moderate, medium period northwest swell will fill in slowly today and peak Friday. Early long period forerunners continue to build in on the offshore buoys (NDBC 51101/51001) through the early morning hours in the 17 to 19 second bands. This northwest swell event should peak near or under High Surf Advisory (HSA) criteria before declining Saturday. A moderate to large long- period northwest swell is expected to fill in Sunday, peaking Sunday evening well into the HSA criteria, and slowly drop Monday. Indications from forecast models is a large to extra large long- period northwest swell expected next week Tuesday into Wednesday above High Surf Warning levels.
Surf along south facing shores will see a series of small long period background energy keeping the south shore from going completely flat over the next few days. Surf along east facing shores has continued to decline but its compounded by short period wind waves from ongoing trades.
HFO Watches/Warnings/Advisories
Small Craft Advisory until 6 PM HST this evening for all Hawaiian waters,
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