Marine Weather and Tide Forecast for Maunaloa, HI
May 14, 2024 5:49 PM HST (03:49 UTC) Change Location
 | Sunrise 5:51 AM Sunset 7:03 PM Moonrise 11:53 AM Moonset 12:37 AM |
PHZ116 Kaiwi Channel- 343 Pm Hst Tue May 14 2024
Tonight - South winds to 10 knots, rising to 15 knots after midnight. Seas 4 to 5 feet. Wave detail: north northwest 3 feet at 13 seconds. Scattered showers.
Wednesday - South winds 15 to 20 knots. Seas 4 to 5 feet. Wave detail: south 3 feet at 4 seconds, northwest 3 feet at 13 seconds and south southwest 3 feet at 16 seconds. Frequent heavy showers. Isolated Thunderstorms in the afternoon.
Wednesday night - South winds to 20 knots. Seas 4 to 5 feet. Wave detail: northwest 5 feet at 11 seconds, south 3 feet at 4 seconds and south southwest 3 feet at 15 seconds. Frequent heavy showers with isolated Thunderstorms.
Thursday - South winds to 15 knots. Seas 5 to 7 feet. Wave detail: north northwest 6 feet at 11 seconds, south southeast 3 feet at 5 seconds and south southwest 3 feet at 18 seconds. Frequent heavy showers with isolated Thunderstorms.
Thursday night - South winds 10 to 15 knots. Seas 5 to 8 feet. Wave detail: northwest 7 feet at 11 seconds, south southeast 3 feet at 5 seconds and south southwest 3 feet at 17 seconds. Frequent heavy showers with isolated Thunderstorms.
Friday - Southeast winds 10 to 15 knots. Seas 5 to 8 feet. Wave detail: north northwest 6 feet at 11 seconds, south southeast 4 feet at 6 seconds and south southwest 3 feet at 16 seconds. Numerous heavy showers with isolated Thunderstorms.
Friday night - Southeast winds 10 to 15 knots. Seas 5 to 7 feet. Wave detail: northwest 5 feet at 11 seconds, south southeast 4 feet at 6 seconds and south southwest 3 feet at 15 seconds. Scattered showers.
Saturday - East winds 10 to 15 knots, rising to 15 to 20 knots. Seas 4 to 6 feet. Wave detail: southeast 4 feet at 6 seconds, northwest 3 feet at 10 seconds and south southwest 3 feet at 15 seconds. Scattered showers.
Sunday - East winds 15 to 20 knots, becoming east southeast 10 to 15 knots after midnight. Seas 4 to 5 feet. Wave detail: east southeast 4 feet at 6 seconds and south southwest 3 feet at 17 seconds. Scattered showers.
winds and seas higher in and near tstms.
winds and seas higher in and near tstms.
PHZ100 343 Pm Hst Tue May 14 2024
Synopsis for hawaiian coastal waters - A cold front will approach the state from the northwest this evening, pass over kauai tomorrow night, and stall over oahu late Thursday. The front will then rapidly weaken into a trough and shift westward Friday. Slight chance of Thunderstorms starting Wednesday night and continuing into the weekend.
FXHW60 PHFO 150159 AFDHFO
Area Forecast Discussion National Weather Service Honolulu HI 359 PM HST Tue May 14 2024
SYNOPSIS
A late season kona low will develop several hundred miles north of the islands tonight, and then meander around well northwest of the islands the rest of the week. The kona low will bring an increase of southerly winds starting tonight, and eventually tap into deep tropical moisture lurking south of the islands. This will cause a slow-moving band of showers, some heavy, and a few embedded thunderstorms over some parts of the state for the second half of the week. Excessive rainfall and flash flooding will continue to be a concern especially over Oahu, Maui County and Kauai.
DISCUSSION
An upper level low northeast of the state continues to produce unstable conditions across the state this afternoon. Convection developed across many interior and mountain areas this afternoon with showers nearly stationary or drifting northward for most areas. These showers should decrease this evening. For tonight, we could see some showers move in from the south, especially around Oahu, where a plume of moisture is seen south of the islands on satellite.
A kona low developing north of the state tonight will bring a multi-day heavy rain event starting Wednesday. Unlike this past week where we had scattered heavy showers with intense rainfall rates, this week we have less instability, but a lot more moisture and the focus of the heavy rain will be over leeward areas rather than windward areas. The best way to describe this event, is like a fire hose shooting water. A steady stream of rain will be concentrated along a band and steadily move east through Wednesday night then stall somewhere around Oahu or Maui County then shift back westward towards Kauai on Friday. The most likely area for the heaviest rain would be in areas under the fire hose, especially leeward areas. A Flood Watch is in effect for the entire state starting Wednesday, but for the Wednesday and Thursday time frame, the greatest chance for flooding impacts will be over Oahu and Maui County with Big Island seeing the least chance for flooding impacts.
Wednesday and Wednesday night...
Showers increasing through the day especially over the western half of the state. By Wednesday afternoon, a frontal boundary approaching Kauai will enhance the lift and instability ahead of the front. Models are showing CAPE values of around 1400 j/kg with precipitable water values increasing to around 1.80 inches.
This will allow for heavy bands of rain to develop with embedded thunderstorms along the convergent bands starting around Wednesday afternoon over Oahu and expanding eastward towards Maui County late afternoon through the evening. Confidence for heavy rain is highest over Oahu with some uncertainty on how far eastward into Maui County the band of heavy rain will shift Wednesday afternoon.
By Wednesday night, the band of heavy rain should make its way over to Maui County. Wednesday night into Thursday looks to the time period for the potential for flash flooding is the highest.
Due to the widespread rain event, large rises should be expected over streams.
Thursday and Thursday night...
Moderate to locally breezy southerly winds will continue to pump up moisture form the south with a steady stream of rain focused over Oahu and Maui county. Instability does decrease slightly, which could help decrease the rain rates a touch. But nonetheless, a steady stream of moisture with prolonged periods of moderate to locally heavy rain will persist around Oahu and Maui County throughout the day.
Friday and Friday night...
As the kona low shifts westward, the associated convergent bands will begin to shift westward towards Kauai. Winds will pick up and become breezy out of the southeast direction over the eastern end of the state with drier air approaching the eastern half of the state. With the drier air moving in from the east, this will decrease the chance for any flooding impacts, but showers will still be possible. Over on the western half of the state, especially Kauai, moisture is expected to ramp up and a steady stream of rain will be moving in from the south impacting many leeward areas. For Oahu, with the steady stream of rain focused mainly over Kauai, the rain will likely not be as widespread, but showery weather should persist for most of the day. By Friday night, the main concern will be over Kauai.
Saturday through Sunday...
As the band of convergence shifts towards Kauai over the weekend, even more moisture (precipitable water values near or possibly even in excess of 2 inches) will be pulled northward toward Kauai and possibly Oahu. The GFS and ECMWF models continue to show differences in how much moisture will be over Oahu during this time this weekend, but confidence remains high for the potential for significant flooding impacts over Kauai this weekend. We will continue to monitor the situation and expect that details will become more clear as we get closer.
AVIATION
An unstable and moist airmass remains in place due to a upper level low northeast of the islands. In the meantime a low is developing northwest and will move closer to the islands and become a kona low tomorrow. SHRA is possible off and on through the forecast period becoming more widespread in coverage and intensity with embd TS. IFR/MVFR conds are possible in heavier SHRA/TS. Southerly winds will become light overnight before picking up tomorrow. Moderate winds are expected with gusts possible within/near heavy SHRA/TS.
AIRMET Sierra is in effect for all the smaller islands and windward Big Island for mtn obsc. Sierra may be needed for IFR conds and Tango for turb as the kona low gets closer and conds deteriorate.
MARINE
A new subtropical low will develop about 450 nm north of Kauai tonight. A cold front extending from the low will approach the state from the northwest this evening, pass over Kauai tomorrow night, and stall over Oahu late Thursday. The front will then rapidly weaken into a trough and shift westward Friday. Scattered heavy showers are possible through the week with the threat of thunderstorms developing Wednesday evening and persisting into the weekend.
A series of overlapping, long-period south swells will keep surf along south facing shores near to just below average in the short term. A second set of southerly swells will fill in late tomorrow night and could bring above average surf Thursday. Surf should remain elevated through the weekend.
A new small medium-period northwest swell will fill in this evening and peak Wednesday. Then, on Wednesday night, a new short- period northwest swell, associated with the developing low described above, is expected to build in. This swell will likely peak near to just below advisory levels Thursday into Friday.
Model guidance tends to under-forecast swell heights with sources developing at a close proximity. Therefore, there is a potential for surf to reach High Surf Advisory criteria, and we will continue to monitor all available guidance.
West facing shores will see a bump in surf through the week due to the overlapping northwest and south swells wrapping into some exposed areas. Surf along east facing shores will remain well below normal levels through the weekend.
HFO WATCHES/WARNINGS/ADVISORIES
Flood Watch from Wednesday morning through Friday evening for all Hawaii islands-
Area Forecast Discussion National Weather Service Honolulu HI 359 PM HST Tue May 14 2024
SYNOPSIS
A late season kona low will develop several hundred miles north of the islands tonight, and then meander around well northwest of the islands the rest of the week. The kona low will bring an increase of southerly winds starting tonight, and eventually tap into deep tropical moisture lurking south of the islands. This will cause a slow-moving band of showers, some heavy, and a few embedded thunderstorms over some parts of the state for the second half of the week. Excessive rainfall and flash flooding will continue to be a concern especially over Oahu, Maui County and Kauai.
DISCUSSION
An upper level low northeast of the state continues to produce unstable conditions across the state this afternoon. Convection developed across many interior and mountain areas this afternoon with showers nearly stationary or drifting northward for most areas. These showers should decrease this evening. For tonight, we could see some showers move in from the south, especially around Oahu, where a plume of moisture is seen south of the islands on satellite.
A kona low developing north of the state tonight will bring a multi-day heavy rain event starting Wednesday. Unlike this past week where we had scattered heavy showers with intense rainfall rates, this week we have less instability, but a lot more moisture and the focus of the heavy rain will be over leeward areas rather than windward areas. The best way to describe this event, is like a fire hose shooting water. A steady stream of rain will be concentrated along a band and steadily move east through Wednesday night then stall somewhere around Oahu or Maui County then shift back westward towards Kauai on Friday. The most likely area for the heaviest rain would be in areas under the fire hose, especially leeward areas. A Flood Watch is in effect for the entire state starting Wednesday, but for the Wednesday and Thursday time frame, the greatest chance for flooding impacts will be over Oahu and Maui County with Big Island seeing the least chance for flooding impacts.
Wednesday and Wednesday night...
Showers increasing through the day especially over the western half of the state. By Wednesday afternoon, a frontal boundary approaching Kauai will enhance the lift and instability ahead of the front. Models are showing CAPE values of around 1400 j/kg with precipitable water values increasing to around 1.80 inches.
This will allow for heavy bands of rain to develop with embedded thunderstorms along the convergent bands starting around Wednesday afternoon over Oahu and expanding eastward towards Maui County late afternoon through the evening. Confidence for heavy rain is highest over Oahu with some uncertainty on how far eastward into Maui County the band of heavy rain will shift Wednesday afternoon.
By Wednesday night, the band of heavy rain should make its way over to Maui County. Wednesday night into Thursday looks to the time period for the potential for flash flooding is the highest.
Due to the widespread rain event, large rises should be expected over streams.
Thursday and Thursday night...
Moderate to locally breezy southerly winds will continue to pump up moisture form the south with a steady stream of rain focused over Oahu and Maui county. Instability does decrease slightly, which could help decrease the rain rates a touch. But nonetheless, a steady stream of moisture with prolonged periods of moderate to locally heavy rain will persist around Oahu and Maui County throughout the day.
Friday and Friday night...
As the kona low shifts westward, the associated convergent bands will begin to shift westward towards Kauai. Winds will pick up and become breezy out of the southeast direction over the eastern end of the state with drier air approaching the eastern half of the state. With the drier air moving in from the east, this will decrease the chance for any flooding impacts, but showers will still be possible. Over on the western half of the state, especially Kauai, moisture is expected to ramp up and a steady stream of rain will be moving in from the south impacting many leeward areas. For Oahu, with the steady stream of rain focused mainly over Kauai, the rain will likely not be as widespread, but showery weather should persist for most of the day. By Friday night, the main concern will be over Kauai.
Saturday through Sunday...
As the band of convergence shifts towards Kauai over the weekend, even more moisture (precipitable water values near or possibly even in excess of 2 inches) will be pulled northward toward Kauai and possibly Oahu. The GFS and ECMWF models continue to show differences in how much moisture will be over Oahu during this time this weekend, but confidence remains high for the potential for significant flooding impacts over Kauai this weekend. We will continue to monitor the situation and expect that details will become more clear as we get closer.
AVIATION
An unstable and moist airmass remains in place due to a upper level low northeast of the islands. In the meantime a low is developing northwest and will move closer to the islands and become a kona low tomorrow. SHRA is possible off and on through the forecast period becoming more widespread in coverage and intensity with embd TS. IFR/MVFR conds are possible in heavier SHRA/TS. Southerly winds will become light overnight before picking up tomorrow. Moderate winds are expected with gusts possible within/near heavy SHRA/TS.
AIRMET Sierra is in effect for all the smaller islands and windward Big Island for mtn obsc. Sierra may be needed for IFR conds and Tango for turb as the kona low gets closer and conds deteriorate.
MARINE
A new subtropical low will develop about 450 nm north of Kauai tonight. A cold front extending from the low will approach the state from the northwest this evening, pass over Kauai tomorrow night, and stall over Oahu late Thursday. The front will then rapidly weaken into a trough and shift westward Friday. Scattered heavy showers are possible through the week with the threat of thunderstorms developing Wednesday evening and persisting into the weekend.
A series of overlapping, long-period south swells will keep surf along south facing shores near to just below average in the short term. A second set of southerly swells will fill in late tomorrow night and could bring above average surf Thursday. Surf should remain elevated through the weekend.
A new small medium-period northwest swell will fill in this evening and peak Wednesday. Then, on Wednesday night, a new short- period northwest swell, associated with the developing low described above, is expected to build in. This swell will likely peak near to just below advisory levels Thursday into Friday.
Model guidance tends to under-forecast swell heights with sources developing at a close proximity. Therefore, there is a potential for surf to reach High Surf Advisory criteria, and we will continue to monitor all available guidance.
West facing shores will see a bump in surf through the week due to the overlapping northwest and south swells wrapping into some exposed areas. Surf along east facing shores will remain well below normal levels through the weekend.
HFO WATCHES/WARNINGS/ADVISORIES
Flood Watch from Wednesday morning through Friday evening for all Hawaii islands-
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| 51213 | 26 mi | 54 min | 80°F | 3 ft | ||||
| 51202 - Mokapu Point, HI (098) | 34 mi | 54 min | 77°F | 4 ft | ||||
| OOUH1 - 1612340 - Honolulu, HI | 38 mi | 50 min | S 4.1G | 78°F | 80°F | 29.96 | ||
| 51207 | 39 mi | 54 min | 77°F | 4 ft | ||||
| 51210 | 39 mi | 54 min | 76°F | 4 ft | ||||
| MOKH1 - 1612480 - Mokuoloe, HI | 39 mi | 74 min | N 8.9G | 77°F | 79°F | 29.95 | ||
| 51205 | 41 mi | 54 min | 78°F | 5 ft | ||||
| KLIH1 - 1615680 - Kahului Bay, Maui, HI | 41 mi | 50 min | ENE 9.9G | 77°F | 80°F | 29.96 | ||
| 51211 | 42 mi | 50 min | 79°F | 3 ft | ||||
| PRHH1 | 44 mi | 50 min | SE 6G | 78°F | 29.96 |
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| PHMK MOLOKAI,HI | 6 sm | 55 min | S 09 | 10 sm | Partly Cloudy | 81°F | 68°F | 66% | 29.98 |
Kolo
Click for Map
Tue -- 12:37 AM HST Moonset
Tue -- 05:19 AM HST 0.01 feet Low Tide
Tue -- 05:51 AM HST Sunrise
Tue -- 11:16 AM HST 0.46 feet High Tide
Tue -- 11:53 AM HST Moonrise
Tue -- 02:07 PM HST 0.40 feet Low Tide
Tue -- 06:59 PM HST Sunset
Tue -- 10:04 PM HST 1.57 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 12:37 AM HST Moonset
Tue -- 05:19 AM HST 0.01 feet Low Tide
Tue -- 05:51 AM HST Sunrise
Tue -- 11:16 AM HST 0.46 feet High Tide
Tue -- 11:53 AM HST Moonrise
Tue -- 02:07 PM HST 0.40 feet Low Tide
Tue -- 06:59 PM HST Sunset
Tue -- 10:04 PM HST 1.57 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Kolo, Molokai Island, Hawaii, Tide feet
| 12 am |
| 1.2 |
| 1 am |
| 0.9 |
| 2 am |
| 0.6 |
| 3 am |
| 0.3 |
| 4 am |
| 0.1 |
| 5 am |
| 0 |
| 6 am |
| 0 |
| 7 am |
| 0.1 |
| 8 am |
| 0.2 |
| 9 am |
| 0.3 |
| 10 am |
| 0.4 |
| 11 am |
| 0.5 |
| 12 pm |
| 0.5 |
| 1 pm |
| 0.4 |
| 2 pm |
| 0.4 |
| 3 pm |
| 0.4 |
| 4 pm |
| 0.5 |
| 5 pm |
| 0.7 |
| 6 pm |
| 0.9 |
| 7 pm |
| 1.1 |
| 8 pm |
| 1.3 |
| 9 pm |
| 1.5 |
| 10 pm |
| 1.6 |
| 11 pm |
| 1.5 |
Kaunakakai
Click for Map
Tue -- 12:37 AM HST Moonset
Tue -- 04:56 AM HST 0.18 feet Low Tide
Tue -- 05:50 AM HST Sunrise
Tue -- 10:19 AM HST 0.60 feet High Tide
Tue -- 11:52 AM HST Moonrise
Tue -- 02:05 PM HST 0.43 feet Low Tide
Tue -- 06:58 PM HST Sunset
Tue -- 09:49 PM HST 1.76 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 12:37 AM HST Moonset
Tue -- 04:56 AM HST 0.18 feet Low Tide
Tue -- 05:50 AM HST Sunrise
Tue -- 10:19 AM HST 0.60 feet High Tide
Tue -- 11:52 AM HST Moonrise
Tue -- 02:05 PM HST 0.43 feet Low Tide
Tue -- 06:58 PM HST Sunset
Tue -- 09:49 PM HST 1.76 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Kaunakakai, Molokai (Hawaii), Tide feet
| 12 am |
| 1.3 |
| 1 am |
| 0.9 |
| 2 am |
| 0.6 |
| 3 am |
| 0.4 |
| 4 am |
| 0.2 |
| 5 am |
| 0.2 |
| 6 am |
| 0.2 |
| 7 am |
| 0.3 |
| 8 am |
| 0.4 |
| 9 am |
| 0.5 |
| 10 am |
| 0.6 |
| 11 am |
| 0.6 |
| 12 pm |
| 0.5 |
| 1 pm |
| 0.5 |
| 2 pm |
| 0.4 |
| 3 pm |
| 0.5 |
| 4 pm |
| 0.6 |
| 5 pm |
| 0.8 |
| 6 pm |
| 1 |
| 7 pm |
| 1.3 |
| 8 pm |
| 1.6 |
| 9 pm |
| 1.7 |
| 10 pm |
| 1.8 |
| 11 pm |
| 1.7 |
Molokai/Honolulu,HI
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