Saturday, December7, 2019
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Marine Weather and Tides
Haena, HI

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:56AMSunset 5:51PM Saturday December 7, 2019 1:15 PM HST (23:15 UTC) Moonrise 3:11PMMoonset 3:03AM Illumination 84% Phase: Waxing Gibbous; Moon at 11 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- 937 Am Hst Sat Dec 7 2019
.small craft advisory in effect through early Sunday morning...
Rest of today..East winds 10 knots. Wind waves 3 feet. North swell 7 feet. Isolated showers.
Tonight..Southeast winds 10 knots in the evening becoming variable less than 10 knots. Wind waves 3 feet in the evening then 2 feet or less. North swell 7 feet.
Sunday..Winds variable less than 10 knots. Wind waves 2 feet or less. North swell 6 feet.
Sunday night..Northeast winds 10 knots. Wind waves 4 feet. North swell 5 feet and northwest 6 to 7 feet. Isolated showers.
Monday..Northeast winds 10 knots. Wind waves 4 feet. Northwest swell 8 feet. Isolated showers.
Monday night..East winds 10 knots. Wind waves 4 feet. Northwest swell 9 feet. Scattered showers in the evening, then isolated showers after midnight.
Tuesday..East winds 10 knots. Wind waves 4 feet. Northwest swell 9 feet. Isolated showers.
Wednesday..North winds 10 knots. Wind waves 3 feet. Northwest swell 12 to 14 feet. Isolated showers.
PHZ100 937 Am Hst Sat Dec 7 2019
Synopsis for hawaiian coastal waters.. A surface ridge will move over the island chain today, then remain nearly stationary through Sunday. The ridge will drift north early next week as a weakening front stalls near kauai.


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 071955 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 955 AM HST Sat Dec 7 2019

SYNOPSIS. A surface ridge near the area will maintain gentle winds and mostly dry weather through early next week. A front approaching from the northwest may produce rainier weather by the end of next week.

DISCUSSION. The 8 AM surface analysis shows a 1020 mb surface high 900 miles northeast of the area at 31N 146W with a ridge extending southwest to 450 miles north of Kauai. The ridge is producing locally fresh trade winds over water around the Big Island of Hawaii and light trade winds elsewhere. Skies are mostly sunny around the islands this morning.

The ridge will shift south slowly over the next few days ahead of a front approaching from the northwest. The ridge will produce light winds and mostly dry weather. Sea breezes will produce some afternoon clouds, but the atmosphere will be too dry and stable to produce much rain. Nighttime land breezes will bring clearing skies. The front will stall northwest of Kauai Monday and dissipate.

A stronger front will approach from the northwest during the middle of next week. Rainfall will start to increase Wednesday ahead of the front. The front may bring breezy trade winds and widespread showers Thursday and Friday.

AVIATION. There are no AIRMETs in effect, and none are expected over the next couple of days. VFR conditions will prevail.

Weak easterly tradewinds today will turn from the southeast tonight as a front approaches from the northwest. The light winds will allow daytime sea breezes and nighttime land breeze to form over the islands. Shower activity will be limited to mainly windward and mountain areas with some afternoon convection bringing added cloud cover.

MARINE. High pressure is moving off to a position far northeast of the area while a front approaches from the northwest. This will result in light winds through Sunday. The mean background flow over open waters will generally be from the east-southeast. Light trade winds will return Monday and Tuesday as the front dissipates near Kauai. Another front will approach the area on Wednesday with winds becoming light once again.

A north-northeast swell building in today will cause seas to reach or exceed 10 feet over portions of the area. Thus a Small Craft Advisory is posted through tonight for waters exposed to this swell. This swell may also produce harbor surges at both Kahului and Hilo harbors.

The north-northeast swell is expected to produce warning level surf along exposed east facing shores and advisory level surf along exposed north facing shores. The advisory and warning is currently in effect through tonight. This swell will lower gradually Sunday and Monday.

A new northwest swell is expected to arrive starting tomorrow, then gradually build Monday through Tuesday. Surf from this swell will reach advisory levels along north and west facing shores. A much larger northwest swell is expected Wednesday and Thursday with warning level surf predicted based on the latest guidance.

No other significant swells are expected.

HFO WATCHES/WARNINGS/ADVISORIES. High Surf Warning until 6 AM HST Sunday for east facing shores of Kauai, Oahu, Molokai, Maui and the Big Island of Hawaii.

High Surf Advisory until 6 AM HST Sunday for north facing shores of Niihau, Kauai, Oahu, Molokai, Maui and the Big Island of Hawaii.

DISCUSSION . Donaldson AVIATION . Morrison MARINE . Burke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWWH1 - 1611400 - Nawiliwili, HI 24 mi46 min SE 6 G 7
51201 - Waimea Bay, HI (106) 91 mi40 min 77°F8 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 mi33 minSSE 710.00 miPartly Cloudy84°F66°F57%1013.2 hPa
Lihue, Lihue Airport, HI23 mi23 minESE 710.00 miPartly Cloudy78°F68°F71%1013.4 hPa

Link to 5 minute data for PHBK

Wind History from HBK (wind in knots)
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Last 24hrW8W7SW4S6W4NW5SE6E3E3E3SE3E5E5E5E5E5E6E5E5CalmSE6NW33S5
1 day agoNW7NW5NW5NW9N4E3NE3E4E5E5NE3E4E6CalmE3E3SE4E4NE6NE3CalmW4SW7W6
2 days agoN6CalmE4CalmNE3E3E4NE3NE5E3SE3N5CalmSE3SE3----------CalmNW5N6N5

Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii
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Hanalei Bay
Click for Map
Sat -- 12:06 AM HST     1.59 feet High Tide
Sat -- 03:02 AM HST     Moonset
Sat -- 05:50 AM HST     0.69 feet Low Tide
Sat -- 07:04 AM HST     Sunrise
Sat -- 11:07 AM HST     1.21 feet High Tide
Sat -- 03:09 PM HST     Moonrise
Sat -- 05:12 PM HST     0.05 feet Low Tide
Sat -- 05:54 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.51.41.10.90.70.70.80.911.21.21.210.70.40.20.10.10.30.611.31.6

Tide / Current Tables for Waimea Bay, Kauai Island, Hawaii
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Waimea Bay
Click for Map
Sat -- 01:14 AM HST     1.23 feet High Tide
Sat -- 03:03 AM HST     Moonset
Sat -- 07:04 AM HST     Sunrise
Sat -- 07:30 AM HST     0.53 feet Low Tide
Sat -- 12:15 PM HST     0.93 feet High Tide
Sat -- 03:10 PM HST     Moonrise
Sat -- 05:55 PM HST     Sunset
Sat -- 06:52 PM HST     0.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.21.21.10.90.80.60.50.50.60.70.90.90.90.80.60.40.20.100.10.30.60.9

Weather Map
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wmap_P
GEOS Local Image of Hawaii    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (18,4,5,8)
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Ground Weather Radar Station Kauai, HI
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weather_mapweather_map weather_map

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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.