Wednesday, June20, 2018 L-36.com


Marine Weather and Tides
Poipu, HI

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:49AMSunset 7:18PM Wednesday June 20, 2018 3:38 AM HST (13:38 UTC) Moonrise 1:08PMMoonset 12:53AM Illumination 46% Phase: First Quarter Moon; Moon at 7 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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PHZ113 Kauai Channel- 327 Am Hst Wed Jun 20 2018
Today..East winds 10 knots. Wind waves 3 feet. Haze. Isolated showers.
Tonight..East winds 15 knots. Wind waves 3 feet. Haze. Isolated showers.
Thursday..Northeast winds 15 knots. Wind waves 4 feet. Haze in the morning. Isolated showers through the day.
Thursday night..Northeast winds 15 knots. Wind waves 4 feet. SWell southeast 3 feet. Isolated showers.
Friday..Northeast winds 15 knots. Wind waves 5 feet. SWell southeast 3 feet. Isolated showers.
Friday night..Northeast winds 20 knots. Wind waves 6 feet. SWell southeast 3 feet. Isolated showers.
Saturday..East winds 20 knots. Wind waves 7 feet. SWell southeast 3 feet. Isolated showers.
Sunday..Northeast winds 20 knots. Wind waves 6 to 7 feet. SWell southeast 3 feet. Isolated showers.
PHZ100 327 Am Hst Wed Jun 20 2018
Synopsis for hawaiian coastal waters.. A stalled frontal boundary located just north of kauai will dissipate today. High pressure will build northeast of the area Thursday into the upcoming weekend.

7 Day Forecast for Marine Location Near Poipu, HI
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location: 21.88, -159.46     debug


Area Discussion for -
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Fxhw60 phfo 200614
afdhfo
area forecast discussion
national weather service honolulu hi
814 pm hst Tue jun 19 2018

Synopsis
A light trade wind pattern will continue through Wednesday with
afternoon sea breezes along western slopes of all islands. Some
vog concentrations will spread over the smaller islands through
Wednesday night. Building high pressure will increase trade winds
from Thursday afternoon onward, pushing any emissions southwest
of the smaller islands. Trade winds will become breezy Friday and
continue into next week with increasing clouds and showers
favoring mountain areas and windward slopes.

Discussion
A weak ridge remains north of the islands as a weakening cold
frontal boundary has stalled just north of kauai. Moisture and
some clouds have drifted in over kauai this afternoon, however the
remnant clouds associated with this front will drift westward
away from the islands. The wind flow has shifted a bit with east-
southeast winds developing on the north side of the big island
pushing the northern edge of the vog (volcanic smog) plume
westward over the some of the smaller islands through Wednesday.

The afternoon low light visible imagery from the GOES satellite
shows this plume beginning to move up into southern maui. The
good news is this vog invasion will be short lived as breezy
northeasterly trade winds will return on Thursday afternoon
blowing out any lingering vog southwest of the smaller islands.

On Wednesday and Thursday... Light trade winds and daytime sea
breezes along western slopes will continue on Wednesday in a
stable atmospheric environment. The trade wind subsidence
inversion will range from 5,000 to 6,000 feet on Wednesday
capping vertical development of clouds and limiting shower
potential to isolated coverage. By Thursday we transition back to
a trade wind weather pattern with clouds and showers favoring
windward slopes and mountain areas.

Friday through next Tuesday... Breezy to locally windy trade winds
are forecast with likely showers developing along windward and
mauka areas with some showers drifting across leeward sections.

The upper level low continues to linger just east of the islands
on Sunday and Monday with little impacts to hawaiian weather.

Aviation
Gentle trade winds and mainly dry weather will continue across
the state into Wednesday, withVFR conditions prevailing. Isolated
MVFR ceilings will be possible on windward slopes, and areas of
MVFR visibilities will be possible across parts of the big island
due to volcanic emissions from kilauea.

No airmets are currently in effect or anticipated overnight.

Marine
Winds will remain light through Wednesday as the stationary front
located just north of the main hawaiian islands continues to
dissipate. Land and sea breezes will continue to develop near
shore through Wednesday. Fresh to strong trades are forecast to
return through the second half of the week as a high builds far
northeast of the area. A small craft advisory will likely be
needed starting Thursday for winds reaching 25 knots in the windy
areas around the big island and maui.

Surf will remain small through midweek with no significant swells
anticipated. Surf will build along east facing shores as trade
winds strengthen later in the week and through the upcoming
weekend. Overlapping swells from a storm southeast of new zealand
may reach the area early next week. We will get a better idea of
the size of this swell later in the week as the swell reaches the
buoy near american samoa.

Hfo watches warnings advisories
None.

Discussion... Bohlin
aviation... Jacobson
marine... Gibbs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWWH1 - 1611400 - Nawiliwili, HI 8 mi57 min WSW 4.1 G 5.1 73°F 82°F1015.6 hPa

Wind History for Nawiliwili, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lihue, Lihue Airport, HI9 mi46 minWNW 310.00 miA Few Clouds74°F72°F94%1015.5 hPa
Kekaha, Pacific Missile Test Facility Barking Sands, HI21 mi43 minSE 310.00 miFair72°F71°F97%1015.2 hPa

Wind History from HLI (wind in knots)
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Last 24hrW4W4SW5W3CalmW5W4CalmE56E4E5E5E6SE5S3CalmNW3W4W5W5W3W4W3
1 day agoW3NW4W5NW5N6NE9NE9NE9NE10NE10NE11NE11NE10NE9NE7NE9NE9N6W6W5W6W4W4W5
2 days agoE6NE6NW4N5NE5NE9NE8NE10NE11NE11NE11NE11NE10NE10NE9NE8N8N7NW4W4W4NW4NW4NW4

Tide / Current Tables for Hanamaulu Bay, Kauai Island, Hawaii
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Hanamaulu Bay
Click for Map
Wed -- 12:52 AM HST     Moonset
Wed -- 12:52 AM HST     First Quarter
Wed -- 04:24 AM HST     -0.13 feet Low Tide
Wed -- 05:54 AM HST     Sunrise
Wed -- 11:17 AM HST     1.05 feet High Tide
Wed -- 01:07 PM HST     Moonrise
Wed -- 04:16 PM HST     0.64 feet Low Tide
Wed -- 07:23 PM HST     Sunset
Wed -- 10:03 PM HST     1.27 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.60.30-0.1-0.100.30.50.81110.90.80.70.60.70.80.91.11.21.31.2

Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii
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Hanalei Bay
Click for Map
Wed -- 12:52 AM HST     First Quarter
Wed -- 12:52 AM HST     Moonset
Wed -- 02:58 AM HST     -0.13 feet Low Tide
Wed -- 05:54 AM HST     Sunrise
Wed -- 10:06 AM HST     1.15 feet High Tide
Wed -- 01:08 PM HST     Moonrise
Wed -- 02:50 PM HST     0.64 feet Low Tide
Wed -- 07:24 PM HST     Sunset
Wed -- 08:52 PM HST     1.37 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.2-0.1-0.1-0.10.10.40.70.91.11.11.110.80.70.60.70.811.21.31.41.31.1

Weather Map and Satellite Images
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wmap_P
GOES 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.
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Wind Forecast for (9,2,3,4)
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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 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.