Sunday, May31, 2020
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Marine Weather and Tides
Kalihiwai, HI

Version 3.4
NOTICE
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 5:48AMSunset 7:12PM Sunday May 31, 2020 9:01 AM HST (19:01 UTC) Moonrise 2:24PMMoonset 2:11AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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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PHZ111 Kauai Windward Waters- 330 Am Hst Sun May 31 2020
Today..East winds 15 knots. Wind waves 3 feet. SWell north 3 feet. Isolated showers through the day.
Tonight..Northeast winds 15 knots. Wind waves 3 feet. SWell north 3 feet. Scattered showers.
Monday..East winds 15 knots. Wind waves 3 feet. SWell north 3 feet. Scattered showers.
Monday night..East winds 10 knots. Wind waves 3 feet. South swell 3 feet after midnight. Scattered showers.
Tuesday..East winds 10 knots. Wind waves 2 feet or less then 3 feet in the afternoon. Mixed swell south 3 feet and northwest 3 feet. Scattered showers.
Tuesday night..East winds 15 knots. Wind waves 4 feet. Mixed swell south 3 feet and northwest 3 feet. Scattered showers.
Wednesday..East winds 15 knots. Wind waves 3 to 4 feet. Mixed swell south 3 to 4 feet and northwest 3 feet. Scattered showers.
Thursday..East winds 15 knots. Wind waves 4 to 6 feet. Mixed swell south 3 feet and northwest 3 feet. Scattered showers.
PHZ100 330 Am Hst Sun May 31 2020
Synopsis for hawaiian coastal waters.. A surface high to the north of the area will remain nearly stationary through the weekend, then move northeast. The high will build back toward the islands Wednesday and Thursday.


7 Day Forecast for Marine Location Near Kalihiwai, HI
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location: 22.22, -159.43     debug


Area Discussion for -
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FXHW60 PHFO 311348 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 348 AM HST Sun May 31 2020

SYNOPSIS. Expect trade wind weather through the entire forecast period as high pressure remains north of the area. Clouds and showers will favor windward and mauka areas, with generally dry weather expected over most leeward locations. An old frontal boundary interacting with island terrain may produce increased showers Tuesday and Wednesday.

DISCUSSION. A surface high northwest of the main Hawaiian Islands is driving moderate trade winds across local waters this morning. This high will gradually move eastward to a position northeast of the area by Wednesday. This will slightly decrease trade wind speeds. High pressure will then rebuild due north of the area Thursday through Saturday, prompting a trade wind speed increase.

Our airmass is rather dry and stable, with an upper ridge centered several hundred miles to our north. Pockets of moisture embedded within trade flow will fuel light passing showers over windward and mauka areas, with most leeward locations remaining generally dry. Moisture associated with the remnants of an old front is forecast to move through the area Tuesday and Wednesday, likely increasing shower coverage across windward and mauka areas.

AVIATION. A surface high located some 450 nm NW of Kauai will be moving NE at 20 kt during the next 24 hours. In doing so, a moderate to locally strong NE trade wind flow will be blowing through the islands today and the early part of this evening before becoming lighter. AIRMET Tango is in effect for the lee side of the mountain ranges of all islands through 22z and is likely to be extended.

Upwind cloudiness has lessened in the past couple of hours, resulting in minimal showers. If this trend continues, it will be a mostly dry morning, area-wide, and likely last through most of today.

MARINE. A high to the north of the area will maintain moderate to locally breezy trade winds through the weekend. Along these same lines, trades have strengthened a bit overnight, so a Small Craft Advisory has been posted for the Alenuihaha Channel through tonight. The trades will weaken Monday as the high moves northeast, but will rebuild Wednesday into Thursday as the high strengthens.

South shore surf will be somewhat elevated this weekend, with a larger south swell expected to gradually build from Monday into Wednesday, then gradually diminish into Friday. Peak surf heights could be large enough to warrant a High Surf Advisory (HSA) for south facing shores of all islands, potentially as early as Tuesday, but more likely Wednesday. Surf will remain well below HSA levels along other shores through the period, although a couple of small swells from the north and northwest will keep surf from going flat along north facing shores. The latest Surf Discussion (SRDHFO) contains details on the swell sources.

HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 AM HST Monday for Alenuihaha Channel.



DISCUSSION . Powell AVIATION . Lau MARINE . Kinel


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51208 9 mi31 min 79°F4 ft
NWWH1 - 1611400 - Nawiliwili, HI 19 mi43 min NE 12 G 15 77°F 83°F1020.1 hPa
51201 - Waimea Bay, HI (106) 79 mi31 min 78°F4 ft
51WH0 - WHOTS - Woods Hole Ocean Time-series 84 mi91 min ENE 9.7 78°F1019.8 hPa

Wind History for Nawiliwili, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lihue, Lihue Airport, HI17 mi68 minNE 1210.00 miA Few Clouds77°F68°F74%1019.9 hPa
Kekaha, Pacific Missile Test Facility Barking Sands, HI21 mi65 minN 010.00 miFair78°F61°F56%1019.4 hPa

Link to 5 minute data for PHLI

Wind History from HLI (wind in knots)
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Last 24hrN11NE11N11NE13NE15NE15NE13NE14NE14NE14NE15NE14NE13NE12NE10NE10E9NE9NE11NE11NE10NE12NE12NE13
1 day agoNE12NE11NE12NE12NE11NE13NE12NE12NE14NE13NE13NE11E11NE11E10E11E12E12E11E12NE10NE10N11NE10
2 days agoNE10E11NE11E11E11E10NE10NE12NE10NE11NE11E12NE12NE12NE10NE9NE12E10NE11NE10NE10NE9NE11NE11

Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii
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Hanalei Bay
Click for Map
Sun -- 02:11 AM HST     Moonset
Sun -- 04:19 AM HST     -0.25 feet Low Tide
Sun -- 05:53 AM HST     Sunrise
Sun -- 11:22 AM HST     1.26 feet High Tide
Sun -- 02:24 PM HST     Moonrise
Sun -- 04:33 PM HST     0.45 feet Low Tide
Sun -- 07:18 PM HST     Sunset
Sun -- 10:28 PM HST     1.32 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.60.2-0.1-0.2-0.2-00.20.60.91.11.31.21.10.80.60.50.50.60.811.21.31.3

Tide / Current Tables for Hanamaulu Bay, Kauai Island, Hawaii
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Hanamaulu Bay
Click for Map
Sun -- 02:10 AM HST     Moonset
Sun -- 05:45 AM HST     -0.25 feet Low Tide
Sun -- 05:53 AM HST     Sunrise
Sun -- 12:33 PM HST     1.16 feet High Tide
Sun -- 02:24 PM HST     Moonrise
Sun -- 05:59 PM HST     0.45 feet Low Tide
Sun -- 07:16 PM HST     Sunset
Sun -- 11:39 PM HST     1.22 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.310.70.30-0.2-0.2-0.10.10.40.711.11.110.90.70.50.50.50.70.91.11.2

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 (15,3,4,5)
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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.