Sunrise 5:55 AM   Sunset 7:01 PM Moonrise 5:32 AM   Moonset 7:02 PM

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PHZ114 Oahu Windward Waters- 959 Pm Hst Mon May 6 2024
Rest of tonight - East winds to 20 knots. Seas 7 to 8 feet. Wave detail: east 7 feet at 8 seconds and northwest 3 feet at 13 seconds. Scattered showers. Tuesday - East winds 15 to 20 knots. Seas 6 to 7 feet. Wave detail: east 6 feet at 7 seconds and northwest 3 feet at 12 seconds. Scattered showers, mainly in the morning. Tuesday night - East winds 15 to 20 knots. Seas 5 to 6 feet. Wave detail: east 6 feet at 8 seconds and northwest 3 feet at 11 seconds. Scattered showers. Wednesday - East winds 10 to 15 knots. Seas to 5 feet. Wave detail: east 4 feet at 7 seconds. Scattered showers. Wednesday night - East winds 10 to 15 knots. Seas 4 to 5 feet. Wave detail: east 4 feet at 7 seconds. Scattered showers. Thursday - East winds to 10 knots. Seas 4 to 5 feet. Wave detail: east 4 feet at 7 seconds. Scattered showers. Thursday night - East winds to 10 knots. Seas to 4 feet. Wave detail: east 4 feet at 7 seconds. Scattered showers. Friday - Winds variable less than 10 knots. Seas 4 to 6 feet. Wave detail: north northwest 4 feet at 9 seconds and east 3 feet at 7 seconds. Scattered showers. Saturday - East winds 10 to 15 knots. Seas 5 to 6 feet. Wave detail: east 4 feet at 5 seconds and north northwest 4 feet at 9 seconds. Scattered showers.

PHZ100 959 Pm Hst Mon May 6 2024
Synopsis for hawaiian coastal waters -
a 1030 mb high over 1000 nm north northeast of the state will drift northeastward over the next couple of days, easing trade winds. A trough developing north of the islands on Wednesday will drift near or over the area Thursday through Saturday, further easing winds.

FXHW60 PHFO 070649 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 849 PM HST Mon May 6 2024

SYNOPSIS
A low pressure system moving into the Central Pacific basin north of Hawaii will weaken the subtropical ridge and keep light to moderate trade winds in the forecast this week. An unstable environment will enhance shower activity across the Hawaii region through the weekend with the highest rainfall amounts favoring the windward and mountain areas. A developing upper level low may produce heavy showers with the potential for thunderstorms over some islands from Friday through Sunday.

DISCUSSION
The upper level low will continue to drift east away from the islands this evening. Enough upper level troughing will continue to produce enhanced trade wind showers through Tuesday. A low level cloud band, the remnants of an old East Pacific cold front, will drift through the islands on Thursday as an upper level trough moves in from the north. The surface cloud band and the upper level forcing from the approaching trough will produce increasing wet weather trends across the state from Thursday onward.

A weakening subtropical ridge north of the islands this week will keep light to moderate trade winds in the forecast through at least Sunday. A hybrid sea breeze and trade wind pattern will develop along terrain sheltered leeward areas. The wind pattern changes again by this weekend as an upper level low sets up directly over the islands producing a surface trough and light to moderate southeasterly winds.

An unsettled weather pattern develops over the Hawaiian Islands in the latest model guidance from Friday through Sunday as an upper low deepens and stalls over the state. This pattern change may bring the potential for heavy rain and thunderstorms over some islands in the state. The potential heavy rain and thunderstorm impacts will vary greatly depending upon the precise location where this upper low sets up relative to each island. If the upper low moves in north and west of the island chain then the northwest islands of Kauai and Oahu would be under a higher rainfall threat levels. If the upper low sets up more over the south and east section of the state, then Maui County and the Big Island will see higher threats for heavy rain and thunderstorms.
More island by island impacts will be revealed as the time period gets closer, and the upper low track with weather impacts evolves over time. Stay tuned.

AVIATION
The trades will gradually ease tonight, with moderate trade winds expected across the island chain on Tuesday. Clouds and showers will continue to favor windward and mauka areas, with MVFR cigs/vsbys possible as showers move through. A stray shower may spill leeward at times, but predominantly VFR conditions are expected here.

AIRMET Sierra remains in effect for most windward areas and will likely continue through the night.

MARINE
Fresh to strong trade winds will slowly ease through Wednesday as a 1030 mb high 1000 nm north northeast of the islands moves off to the northeast. A Small Craft Advisory (SCA) remains in effect for the typically windy waters around the Big Island and Maui County, and may be dropped late Tuesday as winds ease to moderate to locally strong. A surface trough will form north of the state Wednesday. As this feature drifts southward near or over the islands Thursday into Saturday, the trade winds could ease further, and chances for heavy showers will likely increase.

Buoys south of the state and guidance continue to suggest that the current south swell will remain less than 2 feet at 15 to 17 seconds in the short term, keeping south shore surf below seasonal average through Tuesday. Forerunners from a larger and longer lived south-southwest swell will arrive Wednesday, and surf is expected rise near, or to, the High Surf Advisory level during the peak of the swell Thursday and Friday. This swell will gradually decline through the weekend.

A small northwest swell of around 3 feet will continue to build through tonight, peak Tuesday, then decline Wednesday. Wind- driven waves of 6 to 7 feet at 8 to 9 seconds will maintain rough east shore surf above the May average tonight. As trade winds decline over the next few days, these seas will gradually decline to around May average by Tuesday, then drop to below average for the rest of the week.

HFO WATCHES/WARNINGS/ADVISORIES
Wind Advisory until 6 AM HST Tuesday for Big Island Summits.

Small Craft Advisory until 6 PM HST Tuesday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.

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Haleiwa
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Tue -- 01:56 AM HST     0.67 feet High Tide
Tue -- 05:31 AM HST     Moonrise
Tue -- 05:57 AM HST     Sunrise
Tue -- 06:46 AM HST     -0.36 feet Low Tide
Tue -- 03:05 PM HST     1.75 feet High Tide
Tue -- 05:24 PM HST     New Moon
Tue -- 07:00 PM HST     Sunset
Tue -- 07:02 PM HST     Moonset
Tue -- 09:03 PM HST     0.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Haleiwa, Waialua Bay, Oahu Island, Hawaii, Tide feet

Laie Bay
Click for Map
Tue -- 01:13 AM HST     0.94 feet High Tide
Tue -- 05:31 AM HST     Moonrise
Tue -- 05:56 AM HST     Sunrise
Tue -- 07:05 AM HST     -0.35 feet Low Tide
Tue -- 02:22 PM HST     2.28 feet High Tide
Tue -- 05:24 PM HST     New Moon
Tue -- 07:00 PM HST     Sunset
Tue -- 07:01 PM HST     Moonset
Tue -- 09:22 PM HST     0.17 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Laie Bay, Oahu Island, Hawaii, Tide feet

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