Saturday, November28, 2020
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Marine Weather and Tides
Eleele, HI

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:50AMSunset 5:49PM Friday November 27, 2020 10:39 PM HST (08:39 UTC) Moonrise 4:29PMMoonset 4:43AM 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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PHZ112 Kauai Leeward Waters- 922 Pm Hst Fri Nov 27 2020
.small craft advisory in effect through early Saturday morning...
Rest of tonight..Northeast winds to 25 knots. Wind waves 7 feet. Northwest swell 5 feet. Isolated showers late in the evening, then scattered showers after midnight.
Saturday..Northeast winds 20 knots. Wind waves 7 feet. Northwest swell 6 feet. Isolated showers through the day.
Saturday night..Northeast winds 15 knots. Wind waves 6 feet. Northwest swell 6 feet. Isolated showers.
Sunday..Northeast winds 15 knots. Wind waves 4 feet. Northwest swell 6 feet. Isolated showers.
Sunday night..East winds 15 knots. Wind waves 4 feet. Northwest swell 5 feet. Isolated showers through the night.
Monday..East winds 10 knots in the morning becoming variable less than 10 knots. Wind waves 3 feet. Northwest swell 5 feet. Isolated showers in the afternoon.
Monday night..Winds variable less than 10 knots. Wind waves 2 feet or less. Northwest swell 5 feet. Isolated showers in the evening.
Tuesday..Winds variable less than 10 knots becoming east 10 knots. Wind waves 2 feet or less. Northwest swell 9 to 11 feet. Isolated showers.
Wednesday..East winds 10 knots. Wind waves 3 feet. Northwest swell 13 to 15 feet. Isolated showers.
PHZ100 922 Pm Hst Fri Nov 27 2020
Synopsis for hawaiian coastal waters.. High pressure far to the north will move away from the islands tomorrow, weakening the trade winds to moderate levels which will hold into early next week. A dissipating front combined with an upper level feature will bring the chance for Thunderstorms over the windward waters of maui and the big island through tomorrow. A large northwest swell is expected to arrive Tuesday of next week.


7 Day Forecast for Marine Location Near Eleele, HI
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location: 21.9, -159.59     debug


Area Discussion for -
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FXHW60 PHFO 280616 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 816 PM HST Fri Nov 27 2020

SYNOPSIS. Moderate to breezy northeast trade winds will prevail through the weekend, with clouds and showers favoring windward and mountain locations. Winds will become light by Monday, with daytime sea breezes and overnight land breezes expected through Thursday. Dry conditions will prevail through much of next week, with a few showers near the coast each night and over the island interiors each afternoon. A trade wind shower regime may return next Friday.

DISCUSSION. Currently at the surface, a 1027 mb high is centered around 850 miles north of Honolulu and is driving moderate to locally breezy trade winds across the island chain this evening. Infrared satellite imagery shows partly to mostly cloudy skies in windward areas and clear to partly cloudy conditions in leeward locales. Radar imagery shows scattered to numerous showers moving into windward areas of most islands, Oahu being the exception with very little shower activity. Main short term concerns revolve around rain chances and trade wind trends.

High pressure north of the state will keep moderate to locally breezy trade winds blowing through the weekend. The high north of area will weaken as a cold front begins to approach from the northwest early next week, and this should ease the trades to light and variable levels by Monday, with daytime sea breezes and overnight land breezes common statewide. This land and sea breeze pattern should hold through at least Tuesday, and could continue through much of the work week. Moderate to breezy trade winds may return around Friday of next week.

As for the remaining weather details, pockets of moisture embedded within the trade wind flow will bring passing showers to the islands through the weekend, with showers favoring windward and mauka areas. A shortwave trough passing overhead from northwest to southeast tonight and Saturday may act to enhance the trade showers as it moves through. There remains a small chance for a thunderstorm to develop over windward Big Island tonight and over the entire Big Island on Saturday. Dry conditions should then set in statewide Monday through Thursday, with a few showers possible near the coast during the night and early morning hours, and over the interior areas each afternoon. A trade wind shower regime may return next Friday.

AVIATION. A high pressure system north of the Hawaiian Islands will weaken on Saturday with decreasing trade wind speeds into the more moderate range through the weekend. Cloud coverage and shower activity will trend higher through the Saturday morning hours as a large unstable cloud band associated with an old frontal boundary drifts over the islands from the north. These enhanced showers should diminish by from west to east starting late Saturday morning with enhanced showers and isolated thunderstorms lingering near the Big Island and eastern Maui until the evening hours. Periods of MVFR conditions are expected with these showers and Tempo Mountain Obscurations may expand to other islands later tonight.

AIRMET Sierra issued for Tempo Mountain Obscuration above 025 for north through east sections of Molokai and Maui.

AIRMET Tango remains in effect for Tempo Moderate Turbulence below 080 for all areas immediately south through west of mountain ranges. This AIRMET will likely be cancelled by Saturday morning.

AIRMET Tango remains in effect for Tempo Moderate Turbulence between FL270-370. A passing upper level trough will keep this AIRMET for Clear Air Turbulence in effect through Saturday morning.

MARINE. High pressure north of the islands will continue to move to the northeast through tomorrow, and we are expecting trade winds to weaken some into early next week. The current SCA is in effect through tonight due to the winds. Once the winds weaken, they are expected to remain below SCA levels through the upcoming week.

A moderate northwest swell is expected to peak Saturday, with another northwest swell arriving Sunday which will maintain moderate surf through Monday. A small northeast swell will maintain moderate surf along east facing shores through the weekend. Without support of this swell early next week and the lighter trades, surf will be smaller along the east facing shores. Surf will be small along south facing shores through out the period, where a couple of long period pulses from the south- southwest and of south are expected through next week.

A large northwest swell is expected to arrive by next Wednesday morning, which will produce warning level surf along north and west facing shores. Small, long period energy could reach the islands by Tuesday. Surf would likely reach advisory levels on Kauai and Oahu on Tuesday, and warning levels by Tuesday night. The swell will spread down the island chain, peaking Wednesday followed by a gradual decline through Friday. Tides are currently running about half a foot above predicted levels, and high tide Wednesday morning is predicted at 2.3 feet. The high tide and surf arrival will further increase the possibility of runup on roadways during this event. A Small Craft Advisory (SCA) will also be needed as seas exceed 10 feet as early as Tuesday afternoon for waters near Kauai, then quickly spread to other exposed waters Tuesday night. Seas are expected to fall below SCA levels Thursday afternoon.

HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 AM HST Saturday for Kauai Northwest Waters-Kauai Leeward Waters-Kauai Channel-Oahu Leeward Waters- Kaiwi Channel-Maalaea Bay-Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . Jelsema AVIATION . Bohlin MARINE . Powell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWWH1 - 1611400 - Nawiliwili, HI 13 mi51 min 84°F
51201 - Waimea Bay, HI (106) 80 mi62 min 80°F6 ft

Wind History for Nawiliwili, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lihue, Lihue Airport, HI14 mi47 minNE 18 G 2510.00 miA Few Clouds and Breezy77°F68°F74%1019.6 hPa
Kekaha, Pacific Missile Test Facility Barking Sands, HI15 mi44 minNE 410.00 miFair73°F62°F69%1019.3 hPa

Link to 5 minute data for PHLI

Wind History from HLI (wind in knots)
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1 day agoNE11E9NE14NE12E154N13N8NW7NE8NE12NE16--NE12N8NE12NE12NE9NE14NE13NE13NE14NE17NE17
2 days agoNE13E13E11E13NE12NE13NE16NE12E14E15E10NE16NE16NE14E15NE14NE12NE15NE12E12
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NE10NE10NE8E10

Tide / Current Tables for Port Allen, Hanapepe Bay, Kauai Island, Hawaii
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Port Allen
Click for Map
Sat -- 02:34 AM HST     1.73 feet High Tide
Sat -- 05:34 AM HST     Moonset
Sat -- 06:58 AM HST     Sunrise
Sat -- 09:34 AM HST     0.41 feet Low Tide
Sat -- 01:58 PM HST     0.84 feet High Tide
Sat -- 05:04 PM HST     Moonrise
Sat -- 05:54 PM HST     Sunset
Sat -- 08:01 PM HST     0.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.51.71.71.61.31.10.80.50.40.40.50.70.80.80.80.70.50.20.100.10.30.7

Tide / Current Tables for Nawiliwili, Hawaii (2)
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Nawiliwili
Click for Map
Sat -- 02:43 AM HST     1.94 feet High Tide
Sat -- 05:33 AM HST     Moonset
Sat -- 06:58 AM HST     Sunrise
Sat -- 09:31 AM HST     0.49 feet Low Tide
Sat -- 02:07 PM HST     0.89 feet High Tide
Sat -- 05:03 PM HST     Moonrise
Sat -- 05:53 PM HST     Sunset
Sat -- 07:58 PM HST     0.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.71.91.91.81.51.20.90.60.50.50.60.70.80.90.80.70.50.30.100.10.40.7

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
Ground Weather Radar Station Kauai, HI
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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 numerous 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.