Marine Weather and Tide Forecast for Princeville, HI
March 18, 2024 7:40 PM HST (05:40 UTC) Change Location
Sunrise 6:36 AM Sunset 6:44 PM Moonrise 1:31 PM Moonset 2:45 AM |
PHZ111 Kauai Windward Waters- 330 Pm Hst Mon Mar 18 2024
Tonight - East winds 15 knots. Wind waves to 3 feet. Northwest swell 5 feet. Isolated showers.
Tuesday - East winds 15 knots. Wind waves to 3 feet. Northwest swell 6 feet. Isolated showers in the morning.
Tuesday night - East winds 15 knots. Wind waves to 4 feet. Northwest swell 8 feet. Isolated showers after midnight.
Wednesday - East winds 15 knots. Wind waves to 4 feet. Northwest swell 8 feet.
Wednesday night - East winds 15 knots. Wind waves to 4 feet. Northwest swell 7 feet. Isolated showers after midnight.
Thursday - East winds 15 knots. Wind waves to 4 feet. Northwest swell 6 feet. Isolated showers.
Thursday night - Northeast winds 20 knots. Wind waves to 5 feet. Northwest swell 5 feet. Isolated showers in the evening, then scattered showers after midnight.
Friday - Northeast winds 20 knots. Wind waves around 5 feet. Northwest swell 5 to 7 feet. Isolated showers.
Saturday - East winds 20 knots. Wind waves around 6 feet. Northwest swell 6 to 7 feet. Isolated showers.
PHZ100 330 Pm Hst Mon Mar 18 2024
Synopsis for hawaiian coastal waters - Weak high pressure to the north slowly drifts east through Wednesday. A new high will build north of the state on Thursday and Friday, as trades will increase to fresh to locally strong levels.
Area Discussion for - Honolulu, HI
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FXHW60 PHFO 190205 AFDHFO
Area Forecast Discussion National Weather Service Honolulu HI 405 PM HST Mon Mar 18 2024
SYNOPSIS
Moderate easterly trades will continue through the first half of the week, with clouds and light showers favoring windward and mauka locations during the nights and mornings. A return of breezy easterly trades and increasing rainfall chances is possible for the second half of the week, as an upper disturbance moves into the area.
DISCUSSION
Current visible satellite imagery shows scattered to broken low clouds built up over the windward slopes, as well as most leeward areas where local sea breezes have set up in the moderate trade wind flow. Little in the way of cloud cover is being observed upstream at this time. The afternoon soundings from Hilo and Lihue continue to show a very stable and dry atmosphere, with temperature inversions between 4500-6000 ft, and precipitable water values of only 1.01" and 0.80", respectively. This is reflected in the overall lack of showers indicated on radar imagery, aside from a few light sprinkles being carried into windward areas of Kauai, Maui, and the Big Island. Any rainfall has been light, with only a few hundredths of an inch reported.
Guidance remains in good agreement on stable and relatively dry conditions continuing for the next couple of days as mid and upper heights rise over the region. This will create a more suppressed environment with precipitable water values around an inch or less and a strong subsidence inversion hovering around 5-6 kft. The best chances for a few, mostly light, showers will be over windward and mauka locations during the nights and early mornings with moderate easterly trades continuing. Any leeward showers are more likely to occur in the afternoons where localized sea breezes form.
Rainfall accumulations will be minimal with the stable conditions in place.
A gradual strengthening and destabilization of the trade wind flow is expected through the second half of the week. Model consistency is good, giving greater confidence that trades will likely increase as a deeper surface high sets up far north of the state, potentially resulting in breezy conditions by Friday. An upper-level trough will slowly pass over the region during this time, bringing 500 mb temperatures as low as -15C Wednesday through Friday. While there could be some increase in shower coverage in response to the added instability, persistent ridging around 700 mb may be able to maintain enough stability to limit the chances of locally heavy rainfall.
However, guidance is in decent agreement in the upper trough closing off into a low over the far eastern portion of the state by Friday evening and moving back westward to the south of the islands. Meanwhile, a surface high northwest of the state will strengthen as it moves eastward through the second half of this week. If this collective pattern materializes, the already breezy trade wind pattern could become wetter (depending how close the upper low stays to the islands)
with stronger winds through the weekend and into early next week.
AVIATION
Light to moderate east-northeast trade winds will persist through midweek. In this pattern, clouds and showers will favor windward and mauka areas, especially during the late night and morning hours. Overall, shower activity will be limited in coverage and intensity due to a shallow layer of moisture being trapped underneath a strongly stable air mass overhead.
Tonight, with a slight uptick in low clouds and showers, AIRMET Sierra may once again be needed for tempo mountain obscuration across windward portions of the Big Island...and perhaps along other windward areas. Otherwise and elsewhere, VFR conditions will continue to prevail.
MARINE
Moderate to locally fresh trade winds will persist through Thursday as weak high pressure to the north slowly drifts east.
A new high will build north of the state on Thursday and Friday, as trades increase to fresh to locally strong levels. A Small Craft Advisory (SCA) will be needed for at least the typically windy waters around the Big Island and Maui. The stronger trades look to hold into the weekend.
Surf along north and west facing shores will slowly decline through Tuesday as the current northwest (310-320 degree) swell fades. A slightly larger reinforcement from the northwest (310-330 degree) will build in Tuesday night with long period forerunners expected Tuesday afternoon. A High Surf Advisory (HSA) is expected with this swell Wednesday into Thursday for exposed north and west facing shores. The swell will decline later Thursday and Friday with another moderate long period northwest swell expected this weekend.
South facing shores will remain slightly elevated with the fading southwest swell through Wednesday. Short period trade wind swell will be below seasonal average through Thursday and will likely pick up Friday through the weekend as trade winds increase.
HFO WATCHES/WARNINGS/ADVISORIES
None.
Area Forecast Discussion National Weather Service Honolulu HI 405 PM HST Mon Mar 18 2024
SYNOPSIS
Moderate easterly trades will continue through the first half of the week, with clouds and light showers favoring windward and mauka locations during the nights and mornings. A return of breezy easterly trades and increasing rainfall chances is possible for the second half of the week, as an upper disturbance moves into the area.
DISCUSSION
Current visible satellite imagery shows scattered to broken low clouds built up over the windward slopes, as well as most leeward areas where local sea breezes have set up in the moderate trade wind flow. Little in the way of cloud cover is being observed upstream at this time. The afternoon soundings from Hilo and Lihue continue to show a very stable and dry atmosphere, with temperature inversions between 4500-6000 ft, and precipitable water values of only 1.01" and 0.80", respectively. This is reflected in the overall lack of showers indicated on radar imagery, aside from a few light sprinkles being carried into windward areas of Kauai, Maui, and the Big Island. Any rainfall has been light, with only a few hundredths of an inch reported.
Guidance remains in good agreement on stable and relatively dry conditions continuing for the next couple of days as mid and upper heights rise over the region. This will create a more suppressed environment with precipitable water values around an inch or less and a strong subsidence inversion hovering around 5-6 kft. The best chances for a few, mostly light, showers will be over windward and mauka locations during the nights and early mornings with moderate easterly trades continuing. Any leeward showers are more likely to occur in the afternoons where localized sea breezes form.
Rainfall accumulations will be minimal with the stable conditions in place.
A gradual strengthening and destabilization of the trade wind flow is expected through the second half of the week. Model consistency is good, giving greater confidence that trades will likely increase as a deeper surface high sets up far north of the state, potentially resulting in breezy conditions by Friday. An upper-level trough will slowly pass over the region during this time, bringing 500 mb temperatures as low as -15C Wednesday through Friday. While there could be some increase in shower coverage in response to the added instability, persistent ridging around 700 mb may be able to maintain enough stability to limit the chances of locally heavy rainfall.
However, guidance is in decent agreement in the upper trough closing off into a low over the far eastern portion of the state by Friday evening and moving back westward to the south of the islands. Meanwhile, a surface high northwest of the state will strengthen as it moves eastward through the second half of this week. If this collective pattern materializes, the already breezy trade wind pattern could become wetter (depending how close the upper low stays to the islands)
with stronger winds through the weekend and into early next week.
AVIATION
Light to moderate east-northeast trade winds will persist through midweek. In this pattern, clouds and showers will favor windward and mauka areas, especially during the late night and morning hours. Overall, shower activity will be limited in coverage and intensity due to a shallow layer of moisture being trapped underneath a strongly stable air mass overhead.
Tonight, with a slight uptick in low clouds and showers, AIRMET Sierra may once again be needed for tempo mountain obscuration across windward portions of the Big Island...and perhaps along other windward areas. Otherwise and elsewhere, VFR conditions will continue to prevail.
MARINE
Moderate to locally fresh trade winds will persist through Thursday as weak high pressure to the north slowly drifts east.
A new high will build north of the state on Thursday and Friday, as trades increase to fresh to locally strong levels. A Small Craft Advisory (SCA) will be needed for at least the typically windy waters around the Big Island and Maui. The stronger trades look to hold into the weekend.
Surf along north and west facing shores will slowly decline through Tuesday as the current northwest (310-320 degree) swell fades. A slightly larger reinforcement from the northwest (310-330 degree) will build in Tuesday night with long period forerunners expected Tuesday afternoon. A High Surf Advisory (HSA) is expected with this swell Wednesday into Thursday for exposed north and west facing shores. The swell will decline later Thursday and Friday with another moderate long period northwest swell expected this weekend.
South facing shores will remain slightly elevated with the fading southwest swell through Wednesday. Short period trade wind swell will be below seasonal average through Thursday and will likely pick up Friday through the weekend as trade winds increase.
HFO WATCHES/WARNINGS/ADVISORIES
None.
Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
NWWH1 - 1611400 - Nawiliwili, HI | 20 mi | 53 min | NE 7G | 72°F | 75°F | 30.06 |
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Airport Reports
EDIT (hide/show)  Help Click EDIT to display multiple airports. Follow links for more data.Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
PHLI LIHUE,HI | 18 sm | 47 min | ENE 10 | 10 sm | Mostly Cloudy | 68°F | 61°F | 78% | 30.06 | |
PHBK BARKING SANDS PMRF,HI | 21 sm | 49 min | W 03 | 10 sm | Clear | 75°F | 59°F | 57% | 30.02 |
Tide / Current for Hanalei Bay, Kauai Island, Hawaii
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Hanalei Bay
Click for Map
Mon -- 02:45 AM HST Moonset
Mon -- 06:20 AM HST 0.16 feet Low Tide
Mon -- 06:43 AM HST Sunrise
Mon -- 11:27 AM HST 0.47 feet High Tide
Mon -- 01:30 PM HST Moonrise
Mon -- 03:19 PM HST 0.25 feet Low Tide
Mon -- 06:48 PM HST Sunset
Mon -- 11:27 PM HST 1.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 02:45 AM HST Moonset
Mon -- 06:20 AM HST 0.16 feet Low Tide
Mon -- 06:43 AM HST Sunrise
Mon -- 11:27 AM HST 0.47 feet High Tide
Mon -- 01:30 PM HST Moonrise
Mon -- 03:19 PM HST 0.25 feet Low Tide
Mon -- 06:48 PM HST Sunset
Mon -- 11:27 PM HST 1.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Hanalei Bay, Kauai Island, Hawaii, Tide feet
12 am |
1.6 |
1 am |
1.4 |
2 am |
1.1 |
3 am |
0.7 |
4 am |
0.4 |
5 am |
0.2 |
6 am |
0.2 |
7 am |
0.2 |
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 |
0.3 |
3 pm |
0.3 |
4 pm |
0.3 |
5 pm |
0.4 |
6 pm |
0.6 |
7 pm |
0.8 |
8 pm |
1.1 |
9 pm |
1.4 |
10 pm |
1.7 |
11 pm |
1.8 |
Hanamaulu Bay
Click for Map
Mon -- 02:44 AM HST Moonset
Mon -- 06:42 AM HST Sunrise
Mon -- 07:46 AM HST 0.16 feet Low Tide
Mon -- 12:38 PM HST 0.37 feet High Tide
Mon -- 01:30 PM HST Moonrise
Mon -- 04:45 PM HST 0.25 feet Low Tide
Mon -- 06:48 PM HST Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 02:44 AM HST Moonset
Mon -- 06:42 AM HST Sunrise
Mon -- 07:46 AM HST 0.16 feet Low Tide
Mon -- 12:38 PM HST 0.37 feet High Tide
Mon -- 01:30 PM HST Moonrise
Mon -- 04:45 PM HST 0.25 feet Low Tide
Mon -- 06:48 PM HST Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Hanamaulu Bay, Kauai Island, Hawaii, Tide feet
12 am |
1.7 |
1 am |
1.6 |
2 am |
1.4 |
3 am |
1.1 |
4 am |
0.8 |
5 am |
0.5 |
6 am |
0.3 |
7 am |
0.2 |
8 am |
0.2 |
9 am |
0.2 |
10 am |
0.3 |
11 am |
0.3 |
12 pm |
0.4 |
1 pm |
0.4 |
2 pm |
0.3 |
3 pm |
0.3 |
4 pm |
0.3 |
5 pm |
0.2 |
6 pm |
0.3 |
7 pm |
0.5 |
8 pm |
0.7 |
9 pm |
1 |
10 pm |
1.3 |
11 pm |
1.5 |
South,Kauai/Honolulu,HI
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