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PHZ124 Big Island Southeast Waters- 934 Am Hst Mon Dec 4 2023
.small craft advisory in effect through Wednesday afternoon...
Rest of today..Northeast winds 20 knots. Wind waves to 5 feet. Northwest swell 5 feet. Isolated showers.
Tonight..Northeast winds to 30 knots. Wind waves to 5 feet, building to 8 feet after midnight. Northwest swell 6 feet. Isolated showers in the evening, then scattered showers after midnight.
Tuesday..Northeast winds to 30 knots. Wind waves to 10 feet. Northwest swell 10 feet. Scattered showers, mainly in the morning.
Tuesday night..Northeast winds to 30 knots. Wind waves to 10 feet. Northwest swell 10 feet. Isolated showers in the evening, then scattered showers after midnight.
Wednesday..East winds to 30 knots. Wind waves to 9 feet. Northwest swell 8 feet. Scattered showers, mainly in the morning.
Wednesday night..East winds to 30 knots. Wind waves to 8 feet. Northwest swell 7 feet. Isolated showers in the evening, then scattered showers after midnight.
Thursday..East winds to 25 knots. Wind waves around 6 feet. Northwest swell 6 to 7 feet. Scattered showers.
Friday..East winds 20 knots. Wind waves 4 to 5 feet. Northwest swell 3 to 4 feet. Isolated showers.

PHZ100 934 Am Hst Mon Dec 4 2023
Synopsis for hawaiian coastal waters.. High pressure building in from the northwest will strengthen trades through mid week. A large northwest swell may result in warning level surf along smaller island north and west facing shores tonight into Tuesday.

FXHW60 PHFO 041953 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 953 AM HST Mon Dec 4 2023

SYNOPSIS
Dry and stable trade wind conditions are expected through the first half of the week, with the best rainfall chances favoring our windward and mauka locations overnight through the morning periods. A few showers could make it into our leeward areas, especially as the trades become gusty tonight through Tuesday. A return of light winds and increasing moisture associated with an approaching front could bring the rainfall chances up late Thursday through the weekend, especially over the western end of the state as the front begins to weaken and stall.

DISCUSSION
High pressure systems are centered far northeast and northwest of Hawaii driving moderate trade winds. A slow moving and weak cold front 325 miles north of Kauai separates the highs. While mostly dry and stable conditions will prevail over the next couple days, trades will carry in low clouds and showers that will favor windward and mauka locations, with the best chances being overnight through the early morning hours. Although the tail-end of the passing front should stall and dissipate nearby to the north Tuesday through Wednesday, the leading edge of the moisture axis could make it as far south as Kauai late Tuesday into Tuesday night, which would support better windward shower coverage.
Elsewhere, dry and stable conditions will limit rainfall accumulations. The trades are expected to peak in the breezy category Tuesday as the high to the northwest moves eastward and may bring a few of those incoming showers onto leeward sides of the smaller islands.

Despite some model differences in timing, a general consensus supports the ridge to the north weakening and shifting southward beginning Thursday as a shortwave trough and surface cold front approach from the northwest. Surface winds will respond and become light out of the southeast Thursday. A combination of light winds, increasing moisture, and lowering upper heights will support better rainfall coverage over the western end of the state where the front will weaken and begin to stall. Light winds may linger into the weekend before trades gradually return Sunday into next week.

AVIATION
High pressure north of the state will drive moderate to locally breezy trade winds through Tuesday. Dry and stable conditions will keep clouds and showers over mainly windward and mauka area with periods of MVFR possible under passing showers. Otherwise, expect mainly VFR conditions across the state.

No SIGMETs are in effect nor expected through Tuesday.

MARINE
A high far northwest of the main Hawaiian Islands will tighten the pressure gradient across the region and strengthen trade winds into the fresh to strong category by Tuesday morning. After Wednesday, a weak front approaching from the northwest will cause winds to weaken again. This front may reach far northwest waters by the weekend. A large swell created by a hurricane force low far north of the islands will begin arriving tonight. A Small Craft Advisory (SCA) for seas remains in effect for all waters through Wednesday afternoon.

A High Surf Advisory (HSA) remains in effect for most north and west-facing shores of the smaller islands through Tuesday afternoon. The current north-northwest (320-340 degrees) swell will be reinforced by the next one generated by the hurricane force low beginning tonight. This large, long-period swell will peak Tuesday and boost surf heights along north and west-facing shores to High Surf Warning (HSW) levels Tuesday morning. This swell will slowly decline Tuesday night through the remainder of the week. Strengthening trades over the next couple of days will increase east-facing shore surf and lead to rough conditions from Tuesday into the middle of the week.



HFO WATCHES/WARNINGS/ADVISORIES
High Surf Advisory until 6 PM HST Tuesday for north and west facing shores of Niihau, Kauai, Oahu, Molokai and north facing shores of Maui.

Small Craft Advisory until 6 PM HST Wednesday for all Hawaiian waters-

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Honuapo
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Mon -- 01:23 AM HST     0.79 feet Low Tide
Mon -- 06:40 AM HST     Sunrise
Mon -- 08:53 AM HST     2.23 feet High Tide
Mon -- 12:32 PM HST     Moonset
Mon -- 04:53 PM HST     0.33 feet Low Tide
Mon -- 05:43 PM HST     Sunset
Mon -- 07:51 PM HST     Last Quarter
Mon -- 11:17 PM HST     1.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Honuapo, Hawaii Island, Hawaii, Tide feet

Napoopoo
Click for Map
Mon -- 01:27 AM HST     0.69 feet Low Tide
Mon -- 06:43 AM HST     Sunrise
Mon -- 09:03 AM HST     1.83 feet High Tide
Mon -- 12:34 PM HST     Moonset
Mon -- 04:57 PM HST     0.23 feet Low Tide
Mon -- 05:44 PM HST     Sunset
Mon -- 07:51 PM HST     Last Quarter
Mon -- 11:27 PM HST     1.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Napoopoo, Kealakekua Bay, Hawaii Island, Hawaii, Tide feet

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