Monday, June14, 2021
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Marine Weather and Tides
Holualoa, HI

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 5:40AMSunset 7:01PM Monday June 14, 2021 5:48 PM HST (03:48 UTC) Moonrise 9:27AMMoonset 10:54PM Illumination 26% Phase: Waxing Crescent; Moon at 5 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PHZ123 Big Island Leeward Waters- 337 Pm Hst Mon Jun 14 2021
Tonight..West of the big island, northwest winds 10 knots in the evening becoming variable less than 10 knots. NEar south point, east winds 15 knots. Wind waves 6 feet. Isolated showers.
Tuesday..West of the big island, winds variable less than 10 knots becoming southwest 10 knots in the afternoon. NEar south point, east winds 15 knots. Wind waves 5 feet. North swell 3 feet. Isolated showers in the morning.
Tuesday night..West of the big island, northwest winds 10 knots in the evening becoming variable less than 10 knots. NEar south point, east winds 20 knots. Wind waves 6 feet. North swell 3 feet. Isolated showers in the evening.
Wednesday..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 6 feet. North swell 3 feet in the morning. Isolated showers.
Wednesday night..West of the big island, west winds 10 knots in the evening becoming variable less than 10 knots. NEar south point, east winds to 25 knots. Wind waves 7 feet. Scattered showers in the evening. Isolated showers after midnight.
Thursday..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 7 feet. Scattered showers in the morning. Isolated showers in the afternoon.
Thursday night..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 7 feet. Isolated showers.
Friday..West of the big island, winds variable less than 10 knots becoming west 10 knots in the afternoon, then becoming variable less than 10 knots. NEar south point, east winds 15 knots. Wind waves 6 feet. SWell south 3 feet. Isolated showers.
Saturday..Winds variable less than 10 knots west of the big island...east 15 knots near south point. Wind waves 6 feet. SWell south 3 to 4 feet. Isolated showers.
PHZ100 337 Pm Hst Mon Jun 14 2021
Synopsis for hawaiian coastal waters.. High pressure north of the area will maintain moderate to locally strong trade winds through the week.


7 Day Forecast for Marine Location Near Holualoa, HI
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location: 19.65, -156     debug


Area Discussion for -
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FXHW60 PHFO 150126 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 326 PM HST Mon Jun 14 2021

SYNOPSIS. Mainly moderate trade winds will persist through at least early next week as a surface high stays north and northeast of the islands. Remnants of a front will bring a boost of trade wind showers to Kauai and Oahu Tuesday night and Wednesday. An upper level disturbance may set off a slight chance of a afternoon thunderstorm over the higher elevations of the Big Island later this week. Otherwise, low clouds and showers will favor the windward and mountain areas.

DISCUSSION. A 1028 mb surface is currently located 900 miles north-northeast of Oahu. This high is expected to shift eastward in the next 2 to 3 days before stalling some 1400 miles northeast of the islands, then drift northward for the rest of the week. A disturbance pass far south of the islands may bring on a brief day or two of locally strong trades between Tuesday night and Wednesday night, affecting the east end of the island chain. Otherwise, moderate trades are expected to be the primary winds through the upcoming weekend.

Satellite imagery shows pretty much sunny skies across the smaller islands. The Big Island has some clouds across the leeward slopes and the northeast part of the island, including Kamuela and saddle areas. Partly cloudy skies rule the rest of the Big Island. An area of showers is expected impact the windward districts of the Big Island this evening, but that is about it. It should be a fine evening overall. Any increase in trade showers will come after 9 or 10 pm HST.

The band of clouds and showers from an old front continues to creep southward. It is about 200 nm northeast of Oahu as of 3 pm HST. Latest models points to an uptick in trade showers for Kauai and Oahu to commence Tuesday afternoon, and the core of the band to pass through these two islands Tuesday night and Wednesday morning. A more normal and typical trade wind shower pattern returns to these two islands by Wednesday afternoon.

For the second half of the week, an upper level low is expected drop down from the north on Thursday. This disturbance will bring on a more unstable air mass to the region to where some of these trade showers are enhanced, or be heavier in intensity, compared to the light showers we have been having. Also, the disturbance will favor clouds for the Big Island higher elevations and summits, including a slight chance of a afternoon thunderstorm. The GFS and ECMWF have pretty much the same idea in taking the upper low eastward from Kauai, although the GFS is a bit faster. The EC stalls the upper low over the central islands Friday, while the GFS takes it northeast of the Big Island. Both models then move the low northward over the upcoming weekend. Some differences but I believe the end result is the same, that is the enhance trade showers will persist into the weekend.

AVIATION.

The resident dry atmosphere, low inversion, and expanding coverage of mostly transparent cirrus will limit the development of clouds over the islands through Saturday. The exception will be Big Island where slightly better moisture may support a few showers over night. Prevailing VFR anticipated with little in the way of shower activity, even over windward slopes. Moderate trades persist.

No AIRMETs in effect.

MARINE. High pressure north of the islands will maintain moderate to fresh trade winds over most of the coastal waters through most of this week. Winds may reach Small Craft Advisory thresholds at times around Maui and the Big Island. Trade winds may decrease over the weekend as a front develops well northwest of the state.

Surf along south facing shores will remain small through Wednesday, then slowly rise, possibly reaching High Surf Advisory levels over the weekend. A short-period north swell will produce small surf along north facing shores Tuesday through Wednesday night. Surf along north facing shores will be minimal through the rest of the week, but a small northwest swell is possible early next week. Trade winds upstream of the islands will produce only small and choppy surf along east facing shores through the week.

HFO WATCHES/WARNINGS/ADVISORIES. None.



H Lau/JVC/Kino


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KWHH1 28 mi55 min WSW 2.9 G 5.1 79°F 80°F1017.3 hPa
ILOH1 - 1617760 - Hilo, HI 50 mi55 min ENE 7 G 11 77°F 79°F1017.4 hPa
KLIH1 - 1615680 - Kahului Bay, Maui, HI 90 mi55 min NNE 18 G 21 76°F 79°F1018.1 hPa

Wind History for Kawaihae, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kailua / Kona, Keahole Airport, HI0 mi56 minWSW 910.00 miMostly Cloudy82°F66°F58%1016.7 hPa

Link to 5 minute data for PHKO

Wind History from HKO (wind in knots)
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Last 24hrS7S9S6SW4W4N8NW6NW9E7E3CalmNE4CalmCalm4S5S12SW12SW10SW11SW11W12W10SW9
1 day agoS8SE10SE10E7E5CalmE5SE5E4E9E7SE5SE7E7SE9SE10S12S11SW9SW10SW11SW10SW10SW8
2 days ago5S10SE9SE7E6CalmS4SW5SW5W10W7E4CalmCalmCalmW6SW7SW8SW10SW8SW8SW8S9SW8

Tide / Current Tables for Kailua Kona, Big Island, Hawaii
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Kailua Kona
Click for Map
Mon -- 02:01 AM HST     0.16 feet Low Tide
Mon -- 05:45 AM HST     Sunrise
Mon -- 06:34 AM HST     0.56 feet High Tide
Mon -- 09:26 AM HST     Moonrise
Mon -- 11:09 AM HST     0.19 feet Low Tide
Mon -- 06:55 PM HST     2.13 feet High Tide
Mon -- 07:03 PM HST     Sunset
Mon -- 10:54 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.20.20.20.30.50.50.60.50.40.20.20.20.40.711.41.82.12.121.81.41

Tide / Current Tables for Kawaihae, Big Island, Hawaii
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Kawaihae
Click for Map
Mon -- 02:09 AM HST     0.20 feet Low Tide
Mon -- 05:43 AM HST     Sunrise
Mon -- 06:50 AM HST     0.66 feet High Tide
Mon -- 09:25 AM HST     Moonrise
Mon -- 11:33 AM HST     0.20 feet Low Tide
Mon -- 07:03 PM HST     Sunset
Mon -- 07:13 PM HST     2.32 feet High Tide
Mon -- 10:54 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.30.20.20.40.50.60.70.60.50.30.20.20.30.611.51.92.22.32.321.61.2

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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