Sunday, September19, 2021
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Marine Weather and Tides
Haena, 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 6:19AMSunset 6:32PM Sunday September 19, 2021 4:59 AM HST (14:59 UTC) Moonrise 6:20PMMoonset 5:19AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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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PHZ110 Kauai Northwest Waters- 335 Am Hst Sun Sep 19 2021
Today..East winds 20 knots. Wind waves 6 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Tonight..East winds 20 knots. Wind waves 6 feet. Isolated showers in the evening, then scattered showers after midnight.
Monday..East winds 20 knots. Wind waves 5 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Monday night..East winds 15 knots. Wind waves 5 feet. Northwest swell 3 feet after midnight. Scattered showers.
Tuesday..East winds 15 knots. Wind waves 6 feet. Northwest swell 3 feet. Scattered showers.
Tuesday night..East winds 15 knots. Wind waves 7 feet. Northwest swell 5 feet. Scattered showers.
Wednesday..East winds 15 knots. Wind waves 7 feet. North swell 4 feet. Isolated showers.
Thursday..East winds 20 knots. Wind waves 6 feet. North swell 3 to 4 feet. Isolated showers.
PHZ100 335 Am Hst Sun Sep 19 2021
Synopsis for hawaiian coastal waters.. High pressure north of the state will maintain fresh to locally strong trade winds this week.


7 Day Forecast for Marine Location Near Haena, HI
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location: 22.2, -159.68     debug


Area Discussion for -
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FXHW60 PHFO 191335 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 335 AM HST Sun Sep 19 2021

SYNOPSIS. The high pressure center northeast of the islands will continue to drift eastward as a cold front moves into the Central Pacific basin weakening the ridge north of the islands. Trade winds will ease a bit today into the moderate to locally breezy range through Saturday. A band of unstable showers moving through the islands will continue to increase shower activity this morning favoring windward and mountain areas. Passing windward and mountain showers will continue through the week, with higher coverage in the overnight to early morning hours.

DISCUSSION. Radar imagery this morning shows numerous showers along windward and mountain sections of each island. An unstable cloud band shown on Infra-Red satellite imagery continues to drift slowly westward through the island chain this morning. Shower activity will trend downward later this afternoon as most of the cloud band passes to the west of the state.

A 1026 mb high center far northeast of the state will drift eastward over the next 12 to 24 hours as a cold front moves into the Central Pacific basin weakening the ridge north of the state. This change in pressure pattern will cause trade winds to decrease a bit into the moderate to locally breezy range through Saturday.

More typical passing trade wind showers remain in the forecast for most areas after the low level cloud band passes through the islands from later this afternoon through Friday. A weak disturbance brushes by the Big Island starting Monday night, deeper moisture and instability with this weak trough may bring higher shower activity into the eastern half of the Big Island into Tuesday. Otherwise brief passing windward and mountain showers will favor the typical overnight to early morning hours.

AVIATION. Breezy trades will bring moderate showers to windward and mauka areas through the early morning hours. Periods of MVFR are occurring with this activity and AIRMET Sierra for mountain obscuration has been issued. Improvement to prevailing VFR is expected by mid to late morning as showers diminish and shift west of the area.

AIRMET Tango for lee turbulence will remain in effect through the forecast period.

MARINE. A ridge of high pressure far north of the state will maintain fresh to locally strong trades this week. A slight increase of winds are expected late Tuesday into Wednesday. Small Craft Advisory is expected for the typical windier waters around Maui County and the Big Island for much of this week.

A tiny west-northwest swell filled yesterday evening and the Waimea buoy is holding steady near 2 feet and 13 seconds. This swell should hold today then decline tonight. A slightly larger northwest is expected to fill in late Monday and peak late Tuesday into Wednesday. Another similar or slightly larger northwest swell is possible over next weekend.

Surf along south facing shores will remain below average through early next week. Small, long-period south swell energy from recent storms southeast of New Zealand is timed to arrive around midweek, allowing surf to build back to near summer average during the second half of the week. Breezy trades will maintain rough and choppy short-period energy along east facing shores throughout this week week.

HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 PM HST Tuesday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.

Small Craft Advisory until 6 PM HST this evening for Kaiwi Channel-Maui County Windward Waters.



DISCUSSION . Bohlin AVIATION . JVC MARINE . Kino


Weather Reporting Stations
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On 03/09/2021 the NDBC primary processing servers were shut off due to a facilities issue. Station pages on the NDBC website are not updating and there is no ETR at this time. We will update this banner as we learn more.
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51208 8 mi63 min 79°F6 ft
NWWH1 - 1611400 - Nawiliwili, HI 24 mi59 min NE 6 G 11 72°F 87°F1017.3 hPa (-1.3)
51201 - Waimea Bay, HI (106) 91 mi62 min 79°F5 ft

Wind History for Nawiliwili, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kekaha, Pacific Missile Test Facility Barking Sands, HI10 mi68 minESE 310.00 miPartly Cloudy73°F64°F74%1016.2 hPa
Lihue, Lihue Airport, HI23 mi66 minENE 112.00 miRain Fog/Mist73°F71°F94%1016.9 hPa

Link to 5 minute data for PHBK

Wind History from HBK (wind in knots)
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Last 24hrCalmCalmNE4N5SW7--NW11W10W11W11W7W8E10E4SE3CalmCalmSE3NE4E4E4E4SE3E3
1 day agoE3E4CalmSW5SW5SW8W10W9W11SW9W5SW5NW53NE7SE3E3NE3CalmE4E5CalmN3E4
2 days agoE4E3CalmW4NW6NW11N10NW8NW8NW8S6S7NW6N4NE3CalmCalmSE3E3E4NE4E3E4SE3

Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii
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Hanalei Bay
Click for Map
Sun -- 01:41 AM HST     1.33 feet High Tide
Sun -- 05:17 AM HST     Moonset
Sun -- 06:25 AM HST     Sunrise
Sun -- 06:54 AM HST     0.27 feet Low Tide
Sun -- 01:50 PM HST     2.13 feet High Tide
Sun -- 06:18 PM HST     Moonrise
Sun -- 06:36 PM HST     Sunset
Sun -- 08:08 PM HST     0.21 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.31.31.20.90.60.40.30.40.611.41.82.12.121.61.20.70.40.20.30.50.8

Tide / Current Tables for Waimea Bay, Kauai Island, Hawaii
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Waimea Bay
Click for Map
Sun -- 02:49 AM HST     1.02 feet High Tide
Sun -- 05:18 AM HST     Moonset
Sun -- 06:26 AM HST     Sunrise
Sun -- 08:34 AM HST     0.21 feet Low Tide
Sun -- 02:58 PM HST     1.64 feet High Tide
Sun -- 06:19 PM HST     Moonrise
Sun -- 06:37 PM HST     Sunset
Sun -- 09:48 PM HST     0.16 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.8110.90.80.60.40.20.20.40.611.31.61.61.61.310.70.40.20.20.3

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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