Sunrise 5:47 AM   Sunset 6:46 PM Moonrise 4:42 AM   Moonset 5:45 PM

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PHZ123 Big Island Leeward Waters- 935 Am Hst Mon May 6 2024
.small craft advisory in effect through early Tuesday morning - .
Rest of today - West of the big island, north northwest winds 7 to 10 knots, backing to southwest this afternoon. NEar south point, east winds 25 to 30 knots. Seas 5 to 7 feet. Wave detail: east 6 feet at 6 seconds and south 3 feet at 15 seconds. Scattered showers late this morning, then isolated showers and Thunderstorms this afternoon. Tonight - West of the big island, west northwest winds 7 to 10 knots. NEar south point, east winds to 30 knots, becoming 25 to 30 knots after midnight. Seas 5 to 7 feet. Wave detail: east 7 feet at 6 seconds. Isolated showers. Tuesday - West of the big island, northwest winds 7 to 10 knots. NEar south point, east northeast winds to 25 knots, veering to east in the afternoon. Seas 5 to 7 feet. Wave detail: east 6 feet at 6 seconds. Isolated showers. Tuesday night - West of the big island, northwest winds 7 to 10 knots in the evening, becoming variable less than 10 knots. NEar south point, east winds 15 to 20 knots. Seas 4 to 6 feet. Wave detail: east northeast 4 feet at 5 seconds. Isolated showers in the evening, then scattered showers after midnight. Wednesday - North northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave detail: east southeast 4 feet at 5 seconds. Scattered showers. Wednesday night - Winds variable less than 10 knots west of the big island - .east to 15 knots near south point. Seas 3 to 5 feet. Wave detail: east 3 feet at 4 seconds. Scattered showers. Thursday - 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 10 to 15 knots. Seas 3 to 5 feet. Wave detail: east 3 feet at 4 seconds. Scattered showers in the morning. Isolated showers through the night, then scattered showers after midnight. Friday - Winds variable less than 10 knots west of the big island - .east northeast 10 to 15 knots near south point. Seas 3 to 5 feet. Wave detail: east 3 feet at 4 seconds. Isolated showers. Scattered showers after midnight.
winds and seas higher in and near tstms.

PHZ100 935 Am Hst Mon May 6 2024
Synopsis for hawaiian coastal waters - A 1029 mb high nearly 850 nm north of the state will drift northeastward over the next couple of days, leading to a decline in trade winds. A trough will develop north of the islands Wednesday and linger through Friday.

FXHW60 PHFO 061947 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 947 AM HST Mon May 6 2024

SYNOPSIS
Breezy easterly trade winds will decrease to moderate levels by this afternoon. A weak upper-level disturbance will drift over the islands today, enhancing passing showers with a few thunderstorms possible over the Big Island. An unstable band of clouds and showers from an old front, followed by another, potentially stronger, upper trough moving into the region, will keep wet weather in the forecast lasting into the weekend.

DISCUSSION
Current radar imagery shows scattered to numerous showers riding into the windward and mountain slopes of all islands this morning.
Some of the stronger showers are drifting over into the drier leeward areas. Water vapor satellite imagery continues to show a weakening upper-level low slowly drifting from west to east across the island chain. This feature will produce enough instability to keep wet trade winds in the forecast today with isolated thunderstorms over the Big Island this afternoon/evening as it tracks eastward across the state.

At the surface, a 1030 mb high remains far north of the island chain and will continue to produce breezy easterly trade winds across the state through the morning hours. Wind speeds will taper down through the day, becoming more moderate by this afternoon, as the high pressure system drifts eastward away from the state.
Expect light to moderate easterly trade winds to continue through the rest of the week with a hybrid pattern of trade winds and sea/land breezes over terrain-sheltered leeward areas.

Wetter than normal conditions remain in the forecast for all islands through the majority of this week. While Tuesday will trend a bit drier, wetter weather will return for Wednesday and Thursday as the remnants of an old East Pacific cold front drift into the islands on the trade winds. Global models continue to show an upper-level trough diving down over the state on Thursday and Friday, along with a surface trough reflection. The models still differ on the details, but this would keep enhanced showers in the forecast into the weekend, with the potential for some heavy downpours and chance of thunderstorms. Will continue to see how this scenario evolves over the next couple of days and refine the forecast as needed.

AVIATION
Breezy easterly trade winds will persist through today, with clouds and showers favoring windward and mauka locations. MVFR conditions will be possible in any heavier showers. VFR conditions will prevail elsewhere. Although confidence is low, instability associated with an upper level low passing overhead could lead to an isolated thunderstorm or two over the Big Island this afternoon.

AIRMET Tango is in effect for moderate turbulence aloft (FL280-FL380)
as the tail end of an upper level jet streak stretches overhead.
Conditions should improve by this evening as the upper level jet moves off to the east of the state.

AIRMET Sierra may be needed this evening if shower and low level cloud coverage increase sufficiently.

MARINE
Fresh to strong trade winds will slowly ease through Wednesday as a 1029 mb high nearly 850 nm north of the islands moves off to the northeast. A Small Craft Advisory (SCA) is in effect for the typically windy waters around the Big Island and Maui County, while borderline winds will remain in place elsewhere today. As winds decline to moderate to locally fresh strength late Tuesday, the SCA will be dropped entirely. A surface trough will form north of the state on Wednesday, and this feature may drift southward over the islands, leading to a disruption or further decrease in trade winds.

Pulses of south to southwest swell are due this week, with High Surf Advisory (HSA) conditions expected by Thursday. The PacIOOS buoy off of Lanai is still showing some inconsistent energy in the 16 to 18 second range, but recent surf observations prompted a lowering of forecast surf on south shores through Wednesday.
Forerunners from a larger and longer lived south-southwest swell will arrive Wednesday, and surf is expected rise to the HSA level during the peak of the swell Thursday and Friday.

A small northwest swell will build today and persist through midweek. The NOAA buoys to the northwest are showing a swell of around 3 feet, while the swell at the Hanalei PacIOOS buoy has risen to over 2 feet at 15 seconds this morning. Expect this swell to continue to spread down the island chain today, peak Tuesday, and decline late Tuesday and Wednesday. Wind-driven waves of 7 to 8 feet at 8 to 9 seconds will maintain rough east shore surf above the May average today. 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
Small Craft Advisory until 6 AM HST Tuesday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.

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Napoopoo
Click for Map
Mon -- 02:00 AM HST     1.15 feet High Tide
Mon -- 04:43 AM HST     Moonrise
Mon -- 05:51 AM HST     Sunrise
Mon -- 08:10 AM HST     -0.44 feet Low Tide
Mon -- 03:09 PM HST     2.12 feet High Tide
Mon -- 05:45 PM HST     Moonset
Mon -- 06:48 PM HST     Sunset
Mon -- 09:54 PM HST     0.09 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

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

Kailua Kona
Click for Map
Mon -- 01:59 AM HST     1.24 feet High Tide
Mon -- 04:43 AM HST     Moonrise
Mon -- 05:51 AM HST     Sunrise
Mon -- 08:06 AM HST     -0.31 feet Low Tide
Mon -- 03:03 PM HST     2.16 feet High Tide
Mon -- 05:45 PM HST     Moonset
Mon -- 06:49 PM HST     Sunset
Mon -- 09:44 PM HST     0.17 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Kailua Kona, Big Island, Hawaii, Tide feet

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