Sunrise 5:50 AM   Sunset 6:44 PM Moonrise 12:31 AM   Moonset 11:38 AM

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PHZ123 Big Island Leeward Waters- 300 Am Hst Tue Apr 30 2024
Today - North northwest winds 7 to 10 knots west of the big island - .east to 20 knots near south point. Seas 4 to 6 feet. Wave detail: east southeast 5 feet at 5 seconds. Isolated showers this morning. Tonight - West of the big island, west southwest winds 7 to 10 knots, veering to northwest after midnight. NEar south point, east winds 15 to 20 knots, rising to 25 knots after midnight. Seas 3 to 5 feet. Wave detail: east southeast 5 feet at 5 seconds. Isolated showers. Wednesday - West of the big island, north northwest winds 7 to 10 knots in the morning, becoming variable less than 10 knots. NEar south point, east winds to 25 knots. Seas 4 to 6 feet. Wave detail: east 4 feet at 5 seconds. Isolated showers in the morning. Wednesday night - West of the big island, west northwest winds 7 to 10 knots. NEar south point, east winds to 25 knots, backing to east northeast after midnight. Seas 4 to 6 feet. Wave detail: east 5 feet at 6 seconds. Isolated showers. Thursday - West of the big island, winds variable less than 10 knots. NEar south point, east winds 20 to 25 knots, becoming to 25 knots in the afternoon. Seas 5 to 7 feet. Wave detail: east 5 feet at 6 seconds. Isolated showers in the morning. Thursday night - Winds variable less than 10 knots west of the big island - .east northeast to 25 knots near south point. Seas 5 to 7 feet. Wave detail: east 6 feet at 7 seconds. Isolated showers. Friday - West of the big island, winds variable less than 10 knots, becoming west 7 to 10 knots in the afternoon, then becoming variable less than 10 knots. NEar south point, east winds to 25 knots. Seas 5 to 7 feet. Wave detail: east 6 feet at 6 seconds. Isolated showers in the morning. Isolated showers through the day. Saturday - West of the big island, winds variable less than 10 knots, becoming west northwest 7 to 10 knots in the afternoon, then becoming variable less than 10 knots. NEar south point, east winds to 25 knots. Seas 5 to 7 feet. Wave detail: east 6 feet at 6 seconds. Isolated showers in the morning. Isolated showers through the day.

PHZ100 300 Am Hst Tue Apr 30 2024
Synopsis for hawaiian coastal waters - High pressure remains far northeast of the area and a trough northwest of kauai. Trade winds look to strengthen tonight into the moderate to locally strong as high pressure will build far north of the state through the rest of the week.

FXHW60 PHFO 301300 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 300 AM HST Tue Apr 30 2024

SYNOPSIS
Moderate trades will prevail over the eastern islands through mid week, while lighter trades over the western end of the state allow for some leeward land and sea breezes. Relatively dry weather will persist through Wednesday, with a few showers affecting windward areas overnight into the early morning hours and developing over interior and leeward areas each afternoon.
Moderate to locally breezy trade winds will return Wednesday night and Thursday, bringing a transition over to more typical trade wind weather. The trades will become breezy Thursday night through early next week, and the trade wind showers will likely increase in coverage and intensity as a disturbance aloft moves over the islands.

DISCUSSION
Currently at the surface, a weak trough of low pressure is located around 325 miles northwest of Kauai, while a 1030 mb high is centered 1750 miles northeast of Honolulu. Moderate trade winds prevail over the eastern islands, while lighter trades remain over the western end of the state. Infrared satellite imagery shows a mix of high and low clouds resulting in partly to mostly cloudy conditions. Radar imagery shows isolated to scattered showers moving into windward areas, with mainly dry conditions in leeward locales. Main short term focus continues to revolve around trade wind trends and rain chances.

A weak trough of low pressure northwest of the islands will remain nearly stationary today, with little change expected in the overall wind forecast. Moderate trades will hold over the eastern end of the state, while lighter trades prevail over the western islands, allowing for leeward sea and land breezes. We should see the trades start to rebound from east to west tonight and Wednesday, as the trough west of the islands begins to shift slowly westward. Moderate to locally breezy trades should overspread the island chain Wednesday night and Thursday, with breezy conditions expected Thursday night through early next week as a pair of highs consolidate to the distant north.

As for the remaining weather details, relatively dry conditions should generally prevail across the island chain through Wednesday. Brief passing showers will be possible in windward areas overnight into the early morning hours, with a few showers developing over interior and leeward areas each afternoon. We should transition over to a more typical windward and mauka focused trade wind pattern Wednesday night and Thursday, with wetter trade wind conditions looking more likely to develop Friday through early next week as upper troughing sets up over the state and gradually closes off into an upper low in the vicinity of the islands.

AVIATION
Hawaii remains wedged between surface high pressure far northeast of the state and a trough to the northwest. This pattern will allow light to moderate east to east-southeasterly flow to persist today.

Expect scattered showers along the windward portions of the islands and isolated showers elsewhere. Brief periods of MVFR ceilings and visibility may occur with this activity, though not expecting anything widespread. Land breezes are forecast to transition to sea breezes along portions of the leeward coasts by late this morning or early afternoon.

No AIRMETs are currently in effect.

MARINE
Moderate to fresh east to east-southeast trade winds will persist today as high pressure remains far northeast of the area and a trough holds in place northwest of Kauai. Trade winds look to strengthen tonight into the moderate to locally strong range as high pressure will build far north of the state through the rest of the week. A Small Craft Advisory will likely initially be issued for the typical windy waters around the Big Island and Maui tonight and may be expanded to additional waters Friday or Saturday as the high pressure north of the state strengthens.

Tiny surf will persist along north facing shores through Friday, with a small pulse of northwest swell expected this weekend. A small long period south-southwest swell will peak today, and slowly ease Wednesday. Otherwise, small background level surf on south shores for the rest of the week. Choppy surf along east facing shores will decline over the next couple of days, then gradually increase as trade winds rebuild. Rough east shore surf will likely rise above seasonal average Friday into the weekend.

HFO WATCHES/WARNINGS/ADVISORIES
None.

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Kailua Kona
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Tue -- 12:30 AM HST     Moonrise
Tue -- 05:07 AM HST     0.03 feet Low Tide
Tue -- 05:55 AM HST     Sunrise
Tue -- 09:59 AM HST     0.42 feet High Tide
Tue -- 11:37 AM HST     Moonset
Tue -- 01:33 PM HST     0.20 feet Low Tide
Tue -- 06:47 PM HST     Sunset
Tue -- 09:42 PM HST     1.90 feet High Tide
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Kailua Kona, Big Island, Hawaii (2), Tide feet

Kailua Kona
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Tue -- 12:30 AM HST     Moonrise
Tue -- 04:50 AM HST     0.15 feet Low Tide
Tue -- 05:55 AM HST     Sunrise
Tue -- 09:41 AM HST     0.50 feet High Tide
Tue -- 11:37 AM HST     Moonset
Tue -- 01:46 PM HST     0.31 feet Low Tide
Tue -- 06:47 PM HST     Sunset
Tue -- 09:42 PM HST     1.96 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Kailua Kona, Big Island, Hawaii, Tide feet

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