Sunrise 5:44 AM   Sunset 7:10 PM Moonrise 4:29 PM   Moonset 2:57 AM

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PHZ118 Maui County Leeward Waters- 316 Am Hst Tue Jun 18 2024
Today - East winds 15 to 20 knots. Seas 4 to 6 feet. Wave detail: east 5 feet at 7 seconds. Isolated showers this morning. Tonight - East winds 15 to 20 knots. Seas 4 to 6 feet. Wave detail: east 6 feet at 6 seconds. Isolated showers after midnight. Wednesday - East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave detail: east southeast 6 feet at 7 seconds. Wednesday night - East northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave detail: east southeast 6 feet at 7 seconds. Isolated showers after midnight. Thursday - East northeast winds 15 to 20 knots, rising to 20 to 25 knots in the afternoon. Seas 4 to 6 feet. Wave detail: east 6 feet at 7 seconds. Thursday night - East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave detail: east 6 feet at 7 seconds. Isolated showers. Friday - East northeast winds 15 to 20 knots, rising to 20 to 25 knots. Seas 5 to 7 feet. Wave detail: east 6 feet at 7 seconds. Isolated showers through the night. Saturday - East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave detail: east 6 feet at 6 seconds. Isolated showers through the night. Scattered showers in the evening, then isolated showers after midnight.

PHZ100 316 Am Hst Tue Jun 18 2024
Synopsis for hawaiian coastal waters - A surface ridge will strengthen north of the area through midweek, then remain in place through the weekend.

FXHW60 PHFO 181342 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 342 AM HST Tue Jun 18 2024

SYNOPSIS
Surface high pressure north of the state will maintain breezy trade winds through tonight, with trades strengthening into the breezy to strong range Wednesday through the weekend. Fairly typical windward and mauka-focused shower activity is expected through much of the week. Remnants of an old frontal boundary could increase windward shower activity late Friday into Saturday.

DISCUSSION
A weak upper-level low, centered a couple hundred miles southeast of Oahu, continues to sending high clouds northward across the eastern half of the state this morning. Expecting a fairly typical trade weather pattern through Tuesday night, with breezy wind speeds and passing showers focused on the windward and mauka areas. Shower activity will be slightly higher than usual, due to the upper low, with some moderate showers possible over windward areas at times, mainly during the overnight and early morning hours.

As the upper-level low gradually moves westward and weakens over the next few days, we should see inversions lowering, with drier conditions around mid-week. Beginning Wednesday into Thursday, the surface high centered far north of the state will strengthen, increasing the trade wind speeds into the breezy to strong range during the second half of the week and into the weekend. The global models are showing an area of enhanced moisture, associated with an old frontal boundary, riding in on the trades toward the end of this week. This could produce enhanced windward showers late Friday into Saturday.

AVIATION
Breezy trades will continue, with SHRA and low cigs favoring windward and mauka locations. Periods of MVFR conds are possible in any SHRA. Otherwise, VFR conds should prevail.

AIRMET Sierra is in effect for mtn obsc for windward portions of all islands.

AIRMET Tango is in effect for mod turb between 140 and FL300 from the Big Island up through Molokai.

MARINE
Fresh to strong easterly trades will strengthen later today through the second half of the week as the surface ridge builds north of the state. This has resulted in the Small Craft Advisory expanding up the island chain from the typically windier waters around Maui County and the Big Island. Additional marine zones may need to be added in later packages. Seas will quickly respond and build to the advisory level across the Alenuihaha Channel and waters near South Point beginning around Wednesday.

Surf along south-facing shores continues to ease this morning, and that trend will persist today. Expect mainly background south to south-southwest pulses moving through until Friday. A slight upward trend is possible by the end of the weekend from a small, long-period south swell. Guidance shows this arriving Saturday night into Sunday, then lingering into early next week.

Surf along east-facing shores will hold around average today, then gradually trend up through the second half of the week due to the aforementioned trades strengthening locally and upstream of the islands over the eastern Pacific.

Surf along north-facing shores will return to the typical summertime (flat) levels later today through midweek as a small northwest swell moves out. As the trades increase, some northern exposures could see a gradual increase later this week.

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

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Kaumalapau
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Tue -- 12:41 AM HST     0.88 feet High Tide
Tue -- 02:57 AM HST     Moonset
Tue -- 05:47 AM HST     Sunrise
Tue -- 06:47 AM HST     -0.13 feet Low Tide
Tue -- 02:29 PM HST     2.17 feet High Tide
Tue -- 04:28 PM HST     Moonrise
Tue -- 07:11 PM HST     Sunset
Tue -- 09:52 PM HST     0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Kaumalapau, Lanai Island, Hawaii, Tide feet

Lahaina
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Tue -- 12:04 AM HST     0.88 feet High Tide
Tue -- 02:55 AM HST     Moonset
Tue -- 05:46 AM HST     Sunrise
Tue -- 06:04 AM HST     -0.03 feet Low Tide
Tue -- 01:52 PM HST     2.17 feet High Tide
Tue -- 04:27 PM HST     Moonrise
Tue -- 07:10 PM HST     Sunset
Tue -- 09:09 PM HST     0.48 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Lahaina, Maui Island, Hawaii, Tide feet

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