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Marine Weather and Tides
Version 3.4 |
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17. 1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support. |
Sunrise 5:55AM | Sunset 6:41PM | Thursday April 22, 2021 5:01 PM HST (03:01 UTC) | Moonrise 2:40PM | Moonset 3:00AM | Illumination 85% | ![]() |
PHZ123 Big Island Leeward Waters- 332 Pm Hst Thu Apr 22 2021
.small craft advisory in effect through early Sunday morning...
Tonight..Northwest winds 10 knots west of the big island...east to 25 knots near south point. Wind waves 8 feet. Northwest swell 3 feet. Isolated showers.
Friday..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 8 feet. Northwest swell 3 feet. Isolated showers in the morning.
Friday night..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers.
Saturday..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers in the morning.
Saturday night..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers.
Sunday..West of the big island, southeast winds 10 knots backing northwest in the afternoon. NEar south point, east winds to 25 knots. Wind waves 8 feet. Isolated showers in the morning.
Sunday night..West of the big island, southeast winds 10 knots in the evening becoming variable less than 10 knots. NEar south point, east winds to 25 knots. Wind waves 8 feet. Isolated showers through the night.
Monday..West of the big island, winds variable less than 10 knots. NEar south point, east winds to 25 knots easing to 15 knots. Wind waves 5 to 7 feet. Isolated showers.
Tuesday..Winds variable less than 10 knots west of the big island...east 10 knots near south point. Wind waves 4 feet. West swell 3 feet. Isolated showers.
.small craft advisory in effect through early Sunday morning...
Tonight..Northwest winds 10 knots west of the big island...east to 25 knots near south point. Wind waves 8 feet. Northwest swell 3 feet. Isolated showers.
Friday..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 8 feet. Northwest swell 3 feet. Isolated showers in the morning.
Friday night..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers.
Saturday..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers in the morning.
Saturday night..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers.
Sunday..West of the big island, southeast winds 10 knots backing northwest in the afternoon. NEar south point, east winds to 25 knots. Wind waves 8 feet. Isolated showers in the morning.
Sunday night..West of the big island, southeast winds 10 knots in the evening becoming variable less than 10 knots. NEar south point, east winds to 25 knots. Wind waves 8 feet. Isolated showers through the night.
Monday..West of the big island, winds variable less than 10 knots. NEar south point, east winds to 25 knots easing to 15 knots. Wind waves 5 to 7 feet. Isolated showers.
Tuesday..Winds variable less than 10 knots west of the big island...east 10 knots near south point. Wind waves 4 feet. West swell 3 feet. Isolated showers.
PHZ100 332 Pm Hst Thu Apr 22 2021
Synopsis for hawaiian coastal waters.. A surface trough north of kauai will dissipate tonight. High pressure north of the islands will maintain breezy trade winds through the weekend. Winds will trend down Monday and turn southeast.
Synopsis for hawaiian coastal waters.. A surface trough north of kauai will dissipate tonight. High pressure north of the islands will maintain breezy trade winds through the weekend. Winds will trend down Monday and turn southeast.
7 Day Forecast for Marine Location Near Kalaoa, HI
Hourly EDIT Help
location: 19.75, -156.05 debug
Area Discussion for -
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFXHW60 PHFO 230135 AFDHFO
Area Forecast Discussion National Weather Service Honolulu HI 335 PM HST Thu Apr 22 2021
SYNOPSIS. Moderate to breezy easterly trade winds will persist through the weekend, with clouds and showers favoring windward and mountain locations. Windward shower coverage could increase late Friday through Saturday night as an upper low moves through from north to south. Warm and humid conditions may return early next week as the trade winds diminish in response to a front passing far to the north.
DISCUSSION. The surface trough near Kauai that disrupted trade winds through the first half of the week will continue retreating westward away from the area through Friday. Easterly trade winds will continue to fill in from east to west as high pressure builds to the north, establishing a stable trade wind regime into Friday. Showers will favor windward and mountain locations, with the best coverage likely through the overnight and early morning periods.
Windward showers may increase late Friday through Saturday night as an upper low drops southward into the area. Some showers could reach leeward locations as the inversion weakens and the trades become breezy. In addition to the increasing shower coverage, a thunderstorm or two can't be ruled out over the Big Island slopes through the afternoon hours Friday and Saturday.
Models show the upper low briefly drifting south of the state Sunday through Sunday night, then lifting back through the area and merging with an upper trough passing to the north Monday through Tuesday. The subtropical ridge will weaken once again as a front passes to the north. If this scenario evolves, a land and sea breeze regime, with warm and humid conditions, will return and continue through the first half of next week. Clouds and showers will shift back over interior and leeward locations through the afternoon hours.
AVIATION. Trade winds will strengthen across the state through Friday. VFR conditions will prevail through midnight with brief/isolated mountain obscurations over the windward slopes. Increasing clouds and showers is anticipated for the windward side of the Big Island after midnight as upstream moisture tracks in with the trade wind flow. No AIRMETs are in effect, but may be needed for the Big Island later on tonight.
An upper low will move south over Hawaii on Friday and may boost clouds and showers around the state.
MARINE. A surface high passing north of the islands will boost trade winds into the fresh to locally strong range through the weekend. A small craft advisory is in effect for the windier waters around Maui County and the Big Island. Winds are expected to trend down next week as the high weakens.
A northwest swell is bringing moderate surf along north and west facing shores. This swell will decline through Friday. A small west northwest swell is possible next week with a source from a long lived distant typhoon. A small short period northwest pulse may arrive next Thursday.
Small, long period swell from the southern hemisphere will maintain small surf along south facing shores. Expect east shore surf to build to small to moderate heights over the weekend, and then diminish Monday.
HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 AM HST Sunday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.
DISCUSSION . Powell AVIATION . Foster MARINE . Morrison
Weather Reporting Stations
EDIT (on/off)  Help NOTE: Click on distance to see the station location on a mapStations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
KWHH1 | 23 mi | 44 min | WSW 8.9 G 12 | 78°F | 80°F | 1014.6 hPa | ||
ILOH1 - 1617760 - Hilo, HI | 53 mi | 44 min | ENE 6 G 9.9 | 77°F | 77°F | 1015 hPa | ||
KLIH1 - 1615680 - Kahului Bay, Maui, HI | 82 mi | 44 min | ENE 15 G 22 | 76°F | 80°F | 1015.1 hPa |
Wind History for Kawaihae, HI
(wind in knots) EDIT (on/off)  Help5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | |
Last 24hr | SW | SW G10 | SW G12 | SW G12 | W | NW | W | W | N G5 | NE | NE | NE | NE | NE | N | NW G8 | NW G12 | W | NW | W | W | W | SW | W |
1 day ago | W | SW | SE | S | S | SE | SE | SW G13 | SW | E | NE | E | -- | NE | NE | S | W | W | W | W | SW | SW | SW | SW |
2 days ago | S | W | S | S | SE | S | NE | E | NE | E | E | NE | NE | N | N | NW | W | W | W | NW | W | W | W | W |
Airport Reports
EDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
Kailua / Kona, Keahole Airport, HI | 7 mi | 69 min | SSW 10 | 10.00 mi | Mostly Cloudy | 82°F | 67°F | 60% | 1014.4 hPa |
Link to 5 minute data for PHKO
Wind History from HKO (wind in knots)
5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | |
Last 24hr | SE | SE | SE | E | W | Calm | NE | N | SE | E | NE | E | SE | Calm | W | W | W | SW | W | SW | SW | S | ||
1 day ago | W | W | NW | NW | SW | SW | SE | SE | SE | SE | SE | SE | Calm | Calm | Calm | Calm | SW | SW | SW | SW | SW | SW | SW | S |
2 days ago | W | SW | SW | SW | SW | SE | SE | SE | SE | SE | SE | SE | E | SE | SE | SE | S | S | SW | W | W | W | W | W |
Tide / Current Tables for Kailua Kona, Big Island, Hawaii (2)
EDIT Weekend mode (on/off) (on/off)  Help One Week of DataKailua Kona
Click for Map
Thu -- 12:00 AM HST 1.76 feet High Tide
Thu -- 02:59 AM HST Moonset
Thu -- 06:00 AM HST Sunrise
Thu -- 07:09 AM HST -0.09 feet Low Tide
Thu -- 12:59 PM HST 1.02 feet High Tide
Thu -- 02:40 PM HST Moonrise
Thu -- 06:18 PM HST 0.18 feet Low Tide
Thu -- 06:44 PM HST Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 12:00 AM HST 1.76 feet High Tide
Thu -- 02:59 AM HST Moonset
Thu -- 06:00 AM HST Sunrise
Thu -- 07:09 AM HST -0.09 feet Low Tide
Thu -- 12:59 PM HST 1.02 feet High Tide
Thu -- 02:40 PM HST Moonrise
Thu -- 06:18 PM HST 0.18 feet Low Tide
Thu -- 06:44 PM HST Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
1.8 | 1.7 | 1.4 | 1.1 | 0.7 | 0.3 | 0 | -0.1 | -0 | 0.2 | 0.5 | 0.7 | 0.9 | 1 | 0.9 | 0.8 | 0.5 | 0.3 | 0.2 | 0.2 | 0.4 | 0.7 | 1.1 | 1.5 |
Tide / Current Tables for Kailua Kona, Big Island, Hawaii
EDIT (on/off)  Help One Week of DataKailua Kona
Click for Map
Thu -- 12:04 AM HST 1.84 feet High Tide
Thu -- 02:59 AM HST Moonset
Thu -- 06:00 AM HST Sunrise
Thu -- 07:08 AM HST -0.01 feet Low Tide
Thu -- 01:01 PM HST 1.10 feet High Tide
Thu -- 02:40 PM HST Moonrise
Thu -- 06:25 PM HST 0.26 feet Low Tide
Thu -- 06:44 PM HST Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 12:04 AM HST 1.84 feet High Tide
Thu -- 02:59 AM HST Moonset
Thu -- 06:00 AM HST Sunrise
Thu -- 07:08 AM HST -0.01 feet Low Tide
Thu -- 01:01 PM HST 1.10 feet High Tide
Thu -- 02:40 PM HST Moonrise
Thu -- 06:25 PM HST 0.26 feet Low Tide
Thu -- 06:44 PM HST Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
1.8 | 1.8 | 1.5 | 1.2 | 0.8 | 0.4 | 0.1 | -0 | 0.1 | 0.3 | 0.5 | 0.8 | 1 | 1.1 | 1 | 0.9 | 0.6 | 0.4 | 0.3 | 0.3 | 0.5 | 0.8 | 1.1 | 1.5 |
Weather Map
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GEOS Local Image of Hawaii EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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