Marine Weather and Tide Forecast for Kahaluu-Keauhou, HI
May 7, 2024 7:18 AM HST (17:18 UTC) Change Location
 | Sunrise 5:46 AM Sunset 6:47 PM Moonrise 5:26 AM Moonset 6:50 PM |
PHZ123 Big Island Leeward Waters- 331 Am Hst Tue May 7 2024
.small craft advisory in effect through late this afternoon - .
Today - West of the big island, winds variable less than 10 knots, becoming west northwest 7 to 10 knots this afternoon. NEar south point, east winds to 25 knots. Seas 5 to 7 feet. Wave detail: east 5 feet at 5 seconds.
Tonight - West of the big island, west winds 7 to 10 knots. NEar south point, east winds 15 to 20 knots, becoming to 20 knots after midnight. Seas 4 to 6 feet. Wave detail: east 5 feet at 6 seconds. Isolated showers.
Wednesday - West of the big island, winds variable less than 10 knots, becoming northwest 7 to 10 knots in the afternoon. NEar south point, east winds 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 southeast 3 feet at 4 seconds. Isolated showers.
Thursday night - West of the big island, winds variable less than 10 knots. NEar south point, east winds 10 to 15 knots, backing to east northeast after midnight. Seas 3 to 5 feet. Isolated showers in the evening, then scattered showers after midnight.
Friday - West of the big island, winds variable less than 10 knots. NEar south point, east northeast winds to 10 knots, veering to east southeast in the afternoon, then becoming variable less than 10 knots in the evening, becoming east northeast 7 to 10 knots after midnight. Seas 3 to 4 feet. Scattered showers through the night. Isolated Thunderstorms. Numerous showers through the day.
Saturday - Winds variable less than 10 knots west of the big island - .east 10 to 15 knots near south point. Seas 3 to 5 feet. Numerous showers with isolated Thunderstorms.
winds and seas higher in and near tstms.
winds and seas higher in and near tstms.
PHZ100 331 Am Hst Tue May 7 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 071350 AFDHFO
Area Forecast Discussion National Weather Service Honolulu HI 350 AM HST Tue May 7 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. The potential for slow moving heavy showers and thunderstorms are growing from Friday into the weekend as a developing upper level low stalls out over the islands.
DISCUSSION
Weak upper level troughing will continue to enhance trade wind showers today. 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 digs into the Hawaii region from the north.
A combination of the low level cloud band and upper level forcing from the upper 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. Stronger winds aloft are creating warning level wind speeds over the Big Island summits of Mauna Loa and Mauna Kea this morning, these strong winds may continue above advisory levels through tonight. A High Wind Warning was issued this morning for the highest summits on the Big Island. Elsewhere in the lower elevation areas, 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 reflection over the islands and light to moderate east to southeasterly winds.
A rather unstable weather pattern develops over the Hawaiian Islands in the latest model guidance from Friday through Sunday as the upper low deepens and stalls over the state. This pattern change may bring the potential for slow moving heavy rain showers and thunderstorms over some islands in the state. The heavy rain and thunderstorm impacts with this upper low will vary greatly depending upon the precise location where the low center 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. Rainfall coverage was increased and isolated thunderstorms were added to the forecast for this end of this week to account for more consistency in the run to run medium range forecast guidance. The threat for flash flooding over all islands is growing with time, however it remains too early to pin down the highest flood threat areas with a Flood Watch product.
More island by island impacts will be revealed as the forecast time period grows shorter, and the upper low track with weather impacts evolve over time. Stay tuned.
AVIATION
Moderate trade winds will prevail across the island chain today, then ease up a bit tonight especially over the western islands.
Low 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 windward sections of Kauai and Oahu. Conditions should improve here later this morning.
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 through this afternoon and continues to look like it may be dropped by this evening as winds ease to moderate to locally fresh. 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.
Near shore buoys are showing signs of fading energy in the 12 to 16 sec range suggesting the current south swell is slowly beginning to fade today into Wednesday. 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 peak today, then decline Wednesday. Wind- driven waves will gradually decline to around May average today, then drop to below average for the rest of the week.
HFO WATCHES/WARNINGS/ADVISORIES
High Wind Warning until 6 PM HST this evening for Big Island Summits.
Small Craft Advisory until 6 PM HST this evening for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.
Area Forecast Discussion National Weather Service Honolulu HI 350 AM HST Tue May 7 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. The potential for slow moving heavy showers and thunderstorms are growing from Friday into the weekend as a developing upper level low stalls out over the islands.
DISCUSSION
Weak upper level troughing will continue to enhance trade wind showers today. 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 digs into the Hawaii region from the north.
A combination of the low level cloud band and upper level forcing from the upper 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. Stronger winds aloft are creating warning level wind speeds over the Big Island summits of Mauna Loa and Mauna Kea this morning, these strong winds may continue above advisory levels through tonight. A High Wind Warning was issued this morning for the highest summits on the Big Island. Elsewhere in the lower elevation areas, 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 reflection over the islands and light to moderate east to southeasterly winds.
A rather unstable weather pattern develops over the Hawaiian Islands in the latest model guidance from Friday through Sunday as the upper low deepens and stalls over the state. This pattern change may bring the potential for slow moving heavy rain showers and thunderstorms over some islands in the state. The heavy rain and thunderstorm impacts with this upper low will vary greatly depending upon the precise location where the low center 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. Rainfall coverage was increased and isolated thunderstorms were added to the forecast for this end of this week to account for more consistency in the run to run medium range forecast guidance. The threat for flash flooding over all islands is growing with time, however it remains too early to pin down the highest flood threat areas with a Flood Watch product.
More island by island impacts will be revealed as the forecast time period grows shorter, and the upper low track with weather impacts evolve over time. Stay tuned.
AVIATION
Moderate trade winds will prevail across the island chain today, then ease up a bit tonight especially over the western islands.
Low 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 windward sections of Kauai and Oahu. Conditions should improve here later this morning.
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 through this afternoon and continues to look like it may be dropped by this evening as winds ease to moderate to locally fresh. 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.
Near shore buoys are showing signs of fading energy in the 12 to 16 sec range suggesting the current south swell is slowly beginning to fade today into Wednesday. 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 peak today, then decline Wednesday. Wind- driven waves will gradually decline to around May average today, then drop to below average for the rest of the week.
HFO WATCHES/WARNINGS/ADVISORIES
High Wind Warning until 6 PM HST this evening for Big Island Summits.
Small Craft Advisory until 6 PM HST this evening for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| KWHH1 | 30 mi | 49 min | NNE 1G | 75°F | 78°F | 29.97 | ||
| ILOH1 - 1617760 - Hilo, HI | 49 mi | 49 min | SSW 1.9G | 68°F | 76°F | 30.00 | ||
| KLIH1 - 1615680 - Kahului Bay, Maui, HI | 93 mi | 49 min | NNE 8G | 73°F | 75°F | 30.02 |
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| PHKO ELLISON ONIZUKA KONA INTL AT KEAHOLE,HI | 10 sm | 25 min | ENE 06 | 10 sm | Clear | 75°F | 63°F | 65% | 29.99 |
Kailua Kona
Click for Map
Tue -- 02:42 AM HST 1.03 feet High Tide
Tue -- 05:26 AM HST Moonrise
Tue -- 05:51 AM HST Sunrise
Tue -- 08:36 AM HST -0.32 feet Low Tide
Tue -- 03:45 PM HST 2.33 feet High Tide
Tue -- 05:24 PM HST New Moon
Tue -- 06:49 PM HST Sunset
Tue -- 06:49 PM HST Moonset
Tue -- 10:43 PM HST 0.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 02:42 AM HST 1.03 feet High Tide
Tue -- 05:26 AM HST Moonrise
Tue -- 05:51 AM HST Sunrise
Tue -- 08:36 AM HST -0.32 feet Low Tide
Tue -- 03:45 PM HST 2.33 feet High Tide
Tue -- 05:24 PM HST New Moon
Tue -- 06:49 PM HST Sunset
Tue -- 06:49 PM HST Moonset
Tue -- 10:43 PM HST 0.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Kailua Kona, Big Island, Hawaii, Tide feet
| 12 am |
| 0.5 |
| 1 am |
| 0.8 |
| 2 am |
| 1 |
| 3 am |
| 1 |
| 4 am |
| 0.9 |
| 5 am |
| 0.6 |
| 6 am |
| 0.3 |
| 7 am |
| -0.1 |
| 8 am |
| -0.3 |
| 9 am |
| -0.3 |
| 10 am |
| -0.1 |
| 11 am |
| 0.3 |
| 12 pm |
| 0.9 |
| 1 pm |
| 1.5 |
| 2 pm |
| 1.9 |
| 3 pm |
| 2.3 |
| 4 pm |
| 2.3 |
| 5 pm |
| 2.1 |
| 6 pm |
| 1.8 |
| 7 pm |
| 1.3 |
| 8 pm |
| 0.8 |
| 9 pm |
| 0.4 |
| 10 pm |
| 0.2 |
| 11 pm |
| 0.2 |
Kawaihae
Click for Map
Tue -- 03:06 AM HST 1.28 feet High Tide
Tue -- 05:24 AM HST Moonrise
Tue -- 05:50 AM HST Sunrise
Tue -- 08:58 AM HST -0.29 feet Low Tide
Tue -- 04:05 PM HST 2.68 feet High Tide
Tue -- 05:24 PM HST New Moon
Tue -- 06:49 PM HST Sunset
Tue -- 06:49 PM HST Moonset
Tue -- 10:57 PM HST 0.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 03:06 AM HST 1.28 feet High Tide
Tue -- 05:24 AM HST Moonrise
Tue -- 05:50 AM HST Sunrise
Tue -- 08:58 AM HST -0.29 feet Low Tide
Tue -- 04:05 PM HST 2.68 feet High Tide
Tue -- 05:24 PM HST New Moon
Tue -- 06:49 PM HST Sunset
Tue -- 06:49 PM HST Moonset
Tue -- 10:57 PM HST 0.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Kawaihae, Big Island, Hawaii, Tide feet
| 12 am |
| 0.6 |
| 1 am |
| 0.9 |
| 2 am |
| 1.2 |
| 3 am |
| 1.3 |
| 4 am |
| 1.2 |
| 5 am |
| 0.9 |
| 6 am |
| 0.5 |
| 7 am |
| 0.1 |
| 8 am |
| -0.2 |
| 9 am |
| -0.3 |
| 10 am |
| -0.1 |
| 11 am |
| 0.2 |
| 12 pm |
| 0.8 |
| 1 pm |
| 1.5 |
| 2 pm |
| 2.1 |
| 3 pm |
| 2.5 |
| 4 pm |
| 2.7 |
| 5 pm |
| 2.6 |
| 6 pm |
| 2.2 |
| 7 pm |
| 1.7 |
| 8 pm |
| 1.1 |
| 9 pm |
| 0.6 |
| 10 pm |
| 0.3 |
| 11 pm |
| 0.2 |
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