Thursday, March4, 2021
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Marine Weather and Tides
Puako, HI

Version 3.4
NOTICE
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 6:35AMSunset 6:27PM Thursday March 4, 2021 11:09 AM HST (21:09 UTC) Moonrise 12:00AMMoonset 10:51AM Illumination 64% Phase: Waning Gibbous; Moon at 21 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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PHZ121 Alenuihaha Channel- 956 Am Hst Thu Mar 4 2021
.tsunami watch in effect...
Rest of today..East winds 20 knots. Wind waves 6 feet. Northwest swell 7 feet. Isolated showers.
Tonight..East winds 20 knots. Wind waves 5 feet. Northwest swell 7 feet. Isolated showers.
Friday..East winds 20 knots. Wind waves 5 feet. North swell 8 feet. Isolated showers in the morning, then scattered showers in the afternoon.
Friday night..East winds to 25 knots. Wind waves 7 feet. North swell 8 feet. Scattered showers in the evening, then isolated showers after midnight.
Saturday..East winds to 25 knots. Wind waves 8 feet. North swell 7 feet. Isolated showers through the day.
Saturday night..East winds to 25 knots. Wind waves 8 feet. North swell 6 feet. Isolated showers through the night.
Sunday..East winds to 30 knots. Wind waves 8 to 9 feet. North swell 5 to 6 feet. Isolated showers.
Monday..East winds to 30 knots. Wind waves 10 to 11 feet. North swell 5 to 6 feet. Scattered showers.
PHZ100 956 Am Hst Thu Mar 4 2021
Synopsis for hawaiian coastal waters.. High pressure north of the islands will increase trade winds Friday and maintain fresh to strong easterly winds into next week.


7 Day Forecast for Marine Location Near Puako, HI
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location: 20.04, -155.83     debug


Area Discussion for -
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FXHW60 PHFO 042004 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 1004 AM HST Thu Mar 4 2021

SYNOPSIS. Breezy trade winds will continue for the next couple of days as high pressures lies far to our north. Winds will increase over the weekend and on into early next week as the high to our north strengthens. An upper trough will linger over the area throughout the forecast period. This will cause for a rather wet trade wind pattern setting up. Clouds and passing showers will favor windward and mauka areas with the trade winds sufficiently strong enough to blow some passing showers over to leeward areas at times.

DISCUSSION. Strong high pressure is centered far to the north northeast of the state resulting in breezy trade winds across the area. Moisture embedded in the trades is providing for some brief passing showers over windward and mauka areas with most leeward locations remaining dry. Expect little change in this weather pattern today.

The high is forecast to drift east southeast and weaken slightly over the next couple of days. Also a weak low level trough will develop along an old frontal boundary. This will allow for a slight downward trend in trade wind speeds. Meanwhile, an upper trough will sharpen up over the area. This will keep the airmass a bit less stable which will allow for a wetter trade wind shower regime to set up especially for windward and mauka areas. Winds will be sufficiently strong enough to blow some passing showers over to select leeward areas at times. The upper trough may also allow for the thickening up of high clouds over the area from time to time.

By Saturday, a surface high will strengthen north of the state with trade winds speeds increasing once again to breezy and windy levels. The upper trough will continue to linger over the area resulting in the wet trade wind pattern continuing through at least Sunday.

This wet trade wind weather pattern will continue on into early next week as the trough aloft remains near the area and abundant low level moisture moves into the islands from the east. Trade winds will remain elevated as strong high pressure remains to our north.

AVIATION. With high pressure far northwest of the islands, moderate to locally breezy northeast trade winds will persist over the next couple of days. Lower ceilings and showers, with accompanying MVFR conditions, will mainly affect windward and mauka sections. A surface trough is expected to form near the state later today into Friday, which is likely to increase showers over the smaller isles beginning tonight. And high cloudiness will be streaking over the area from the west.

No AIRMETs are in effect. One may be needed later today and/or tonight for mountain obscuration as shower coverage increases.

MARINE. A Small Craft Advisory (SCA) includes waters around Kauai, the Kauai Channel and windward Oahu waters for combined seas near 10 feet. SCA conditions will spread to most waters Friday and over the weekend due to building seas and winds as the high to our north strengthens.

A bump in east shoreline surf will occur over the weekend as the trade wind swell increases and an arriving north swell wrap fills in. A northwest swell arriving today will peak below the HSA threshold along north and west-facing shores late today into Friday. A secondary, reinforcing north swell will arrive Friday night and may boost north facing shore surf to HSA heights Friday into Saturday and slowly diminish Sunday. Background south swells will provide small surf to south facing shores.

HFO WATCHES/WARNINGS/ADVISORIES. Tsunami Watch until 6 PM HST this evening for all Hawaii islands.

Tsunami Watch until 6 PM HST this evening for all Hawaiian waters-

Small Craft Advisory until 6 AM HST Friday for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-Kauai Channel- Oahu Windward Waters.



DISCUSSION . Burke AVIATION . Kinel MARINE . Morrison


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KWHH1 0 mi52 min WNW 5.1 G 6 74°F 76°F1018.3 hPa
ILOH1 - 1617760 - Hilo, HI 46 mi52 min NNE 4.1 G 7 73°F 77°F1018.6 hPa
51206 49 mi57 min 75°F8 ft
KLIH1 - 1615680 - Kahului Bay, Maui, HI 68 mi58 min NE 8.9 G 12 73°F 74°F1019.7 hPa

Wind History for Kawaihae, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bradshaw Army Air Field / Hawaii, HI23 mi72 minN 010.00 miFair56°F31°F38%1018 hPa

Link to 5 minute data for PHSF

Wind History from HSF (wind in knots)
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Last 24hrCalmSE3W5S5SW3S10
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SE7E4CalmNE5NE5E3SE6E4NE4E3E3NE3NE3CalmCalmSE3CalmW3
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Tide / Current Tables for Kawaihae, Big Island, Hawaii
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Kawaihae
Click for Map
Thu -- 02:34 AM HST     0.61 feet Low Tide
Thu -- 06:40 AM HST     Sunrise
Thu -- 07:31 AM HST     1.21 feet High Tide
Thu -- 10:51 AM HST     Moonset
Thu -- 01:48 PM HST     0.03 feet Low Tide
Thu -- 06:29 PM HST     Sunset
Thu -- 09:17 PM HST     2.03 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.80.60.60.70.91.11.21.21.10.80.50.30.100.10.40.81.21.61.9221.8

Tide / Current Tables for Mahukona, Hawaii Island, Hawaii
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Mahukona
Click for Map
Thu -- 02:44 AM HST     0.53 feet Low Tide
Thu -- 06:40 AM HST     Sunrise
Thu -- 07:04 AM HST     0.97 feet High Tide
Thu -- 10:51 AM HST     Moonset
Thu -- 01:36 PM HST     -0.04 feet Low Tide
Thu -- 06:29 PM HST     Sunset
Thu -- 09:14 PM HST     1.82 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.70.60.50.60.80.910.90.80.60.30.1-0-00.10.40.71.11.51.71.81.81.6

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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