Sunrise 5:57 AM   Sunset 6:40 PM Moonrise 3:36 PM   Moonset 3:40 AM

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PHZ124 Big Island Southeast Waters- 902 Pm Hst Thu Apr 18 2024
.small craft advisory in effect through Friday afternoon - .
Rest of tonight - East northeast winds 20 to 25 knots. Seas 5 to 6 feet. Wave detail: east 6 feet at 5 seconds. Friday - East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave detail: east 6 feet at 5 seconds. Friday night - East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave detail: east 5 feet at 5 seconds. Isolated showers after midnight. Saturday - East northeast winds 15 to 20 knots. Seas to 5 feet. Wave detail: east 5 feet at 5 seconds. Isolated showers in the morning. Saturday night - East northeast winds to 15 knots. Seas 4 to 5 feet. Wave detail: east 4 feet at 6 seconds. Isolated showers after midnight. Sunday - East northeast winds to 15 knots. Seas 4 to 5 feet. Wave detail: east 5 feet at 7 seconds. Isolated showers. Sunday night - East northeast winds to 20 knots. Seas 5 to 6 feet. Wave detail: east 5 feet at 7 seconds. Isolated showers. Monday - East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave detail: east 6 feet at 7 seconds. Isolated showers. Scattered showers after midnight. Tuesday - East northeast winds 20 to 25 knots. Seas 6 to 8 feet. Wave detail: east 7 feet at 7 seconds. Isolated showers through the night. Scattered showers through the day.

PHZ100 902 Pm Hst Thu Apr 18 2024
Synopsis for hawaiian coastal waters - A series of surface highs will build and pass north of the waters through early next week.

FXHW60 PHFO 190647 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 847 PM HST Thu Apr 18 2024

SYNOPSIS
Mostly dry trade wind conditions will prevail through next week.
Breezy northeast trade winds will briefly weaken over the weekend, then become breezy again out of the east early next week. Clouds and brief showers will favor windward and mauka locations, mainly during the overnight through early morning hours, as areas of moisture move through periodically.



DISCUSSION
No changes to the forecast this evening, and not expecting any significant changes with the morning package. High pressure far to the north-northwest of the state will be drifting to the east, with a ridge of high pressure remaining north of the region. This will maintain a trade wind pattern into the middle to end of next week.

Lingering moisture from an old frontal system, and enhanced by an upper level trough moving east away from the region, is moving down the island chain this evening. High resolution models show this band sagging southward overnight, bringing some additional showers to windward Maui County, before diminishing Friday.

Expect a return to a drier trade wind pattern behind this band.
Mid and upper level ridging will help to maintain that drier trade wind pattern into next week. Clouds and showers will be riding in on the trade wind flow, and remain focused over the typical windward sides of the islands. Those showers will be concentrated during the overnight and morning hours. Clouds and limited showers are also expected over the west slopes of the Big Island mainly during the afternoon and evening hours.

The breezy trades will hold Friday, then ease into the light to moderate range over the weekend as a weakness forms in the surface ridge due to a low passing far to the north. The southern extent of a mid- to upper-level trough associated with this system will pass near the islands to the north late Friday into the weekend, which could support a slight increase in windward shower coverage during the overnight/early mornings. Rising upper heights along with a strengthening surface ridge to the north will support dry conditions prevailing early next week with breezy easterly trades returning.



AVIATION
Moderate trade winds will remain in place through tomorrow as high pressure remains north of the islands. A band of low clouds and showers will continue bringing MVFR clouds and showers to Kauai and Oahu tonight and will likely spread down the island chain and affect Maui County later tonight into tomorrow morning. An improvement in conditions can then be expected tomorrow by late morning.
Trade wind showers could then increase again by tomorrow evening.

AIRMET Sierra for tempo mountain obscuration remains in effect for Kauai and Oahu due to the cloud band.



MARINE
A series of surface highs will build and pass north of the state through early next week. Moderate to fresh trades will persist through Friday weakening slightly over the weekend. A Small Craft Advisory (SCA) is in effect through the day Friday for the typical windy zones around Maui County and the Big Island. Trades will become fresh to locally strong early next week.

Moderate surf along south facing shores will hold through tonight than slightly decline Friday. A series of small, medium period swells will persist through the weekend keeping south facing shores from going flat. Small, short- period north swell will continue into into the weekend. A larger moderate medium period north swell reinforcement will arrive early Sunday. Surf along east facing shores will remain small but can expect a minor boost as winds pick up Monday.



HFO WATCHES/WARNINGS/ADVISORIES
Small Craft Advisory until 6 PM HST Friday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.

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Honuapo
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Fri -- 12:56 AM HST     1.94 feet High Tide
Fri -- 03:39 AM HST     Moonset
Fri -- 06:01 AM HST     Sunrise
Fri -- 07:49 AM HST     0.06 feet Low Tide
Fri -- 01:49 PM HST     1.62 feet High Tide
Fri -- 03:35 PM HST     Moonrise
Fri -- 06:41 PM HST     Sunset
Fri -- 07:36 PM HST     0.34 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Honuapo, Hawaii Island, Hawaii, Tide feet

Napoopoo
Click for Map
Fri -- 01:06 AM HST     1.54 feet High Tide
Fri -- 03:41 AM HST     Moonset
Fri -- 06:02 AM HST     Sunrise
Fri -- 07:53 AM HST     -0.04 feet Low Tide
Fri -- 01:59 PM HST     1.22 feet High Tide
Fri -- 03:36 PM HST     Moonrise
Fri -- 06:43 PM HST     Sunset
Fri -- 07:40 PM HST     0.24 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

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

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