Wednesday, June20, 2018 L-36.com


Marine Weather and Tides
Kihei, 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 5:44AMSunset 7:10PM Wednesday June 20, 2018 9:13 AM HST (19:13 UTC) Moonrise 12:56PMMoonset 12:40AM Illumination 49% 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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PHZ119 Maalaea Bay- 327 Am Hst Wed Jun 20 2018
Today..North winds 10 knots rising to 20 knots in the afternoon. Wind waves 2 feet or less. Haze through the day. Isolated showers in the afternoon.
Tonight..North winds to 25 knots. Wind waves 2 feet or less. Isolated showers in the evening. Haze through the night.
Thursday..North winds to 25 knots. Wind waves 2 feet or less. Haze.
Thursday night..North winds to 25 knots. Wind waves 2 feet or less. Haze in the evening. Isolated showers through the night.
Friday..North winds to 25 knots. Wind waves 2 feet or less then 3 feet in the afternoon.
Friday night..North winds to 25 knots. Wind waves 4 feet.
Saturday..North winds to 25 knots. Wind waves 3 feet. Isolated showers.
Sunday..North winds to 25 knots. Wind waves 3 feet.
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 Kihei, HI
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location: 20.75, -156.45     debug


Area Discussion for -
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Fxhw60 phfo 201356
afdhfo
area forecast discussion
national weather service honolulu hi
356 am hst Wed jun 20 2018

Synopsis
A light trade wind pattern will continue today with afternoon
sea breezes along western slopes of all islands. Some vog
concentrations will spread over the smaller islands through
tonight. A building high pressure system across the central
pacific will increase trade winds on Thursday, pushing any vog
emissions towards the southwest away from smaller islands. Trade
winds will become breezy to locally windy by Friday and continue
through next week with increasing clouds and showers favoring
windward slopes and mountain areas.

Discussion
A weak high pressure ridge remains to the north of the state with
light trade wind flow and daytime onshore sea breezes along
western slopes of all islands with only isolated showers in the
forecast for today. A remnant front lingers just north of kauai
this morning as low level wind flow just north of the state has
become more southeasterly. These winds will drive the cloud band
with this front away from the islands. Vog (volcanic smog)
emissions will also drift westward over most of the smaller
islands today, possibly as far north as oahu and kauai later this
afternoon. The good news is that stronger trade winds will return
on Thursday, pushing the vog towards the southwest away from the
smaller islands.

The larger scale weather pattern changes on Thursday as a strong
surface high pressure center builds into the central pacific.

Trade wind speeds will increase through Friday, becoming breezy
to locally windy across the islands. Stronger trade winds will
produce higher chances for clouds and showers favoring typical
windward and mauka areas with brief periods of showers drifting
into leeward sections. Expect this trade wind weather pattern
with stronger winds to last through the end of next week. Long
range weather forecast guidance remains in good agreement with
giving us high confidence in this extended trade wind weather
pattern.

Aviation
Gentle trade winds and mainly dry weather will continue across
the state today, 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 today.

Marine
Winds will remain light with land and sea breezes expected near
the coasts once again today. Fresh to strong trades are forecast
to return through the second half of the week as high pressure builds
far northeast of the area. A small craft advisory will likely be
needed by Thursday for winds reaching 25 knots in the windy areas
around the big island and maui.

Surf will remain small with no significant swells anticipated into
the upcoming weekend. Surf will gradually build along east facing
shores as trade winds strengthen later late tonight 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 over the weekend 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
KLIH1 - 1615680 - Kahului Bay, Maui, HI 10 mi43 min NE 9.9 G 15 79°F 81°F1016.1 hPa
51205 19 mi43 min 79°F4 ft
51202 - Mokapu Point, HI (098) 80 mi39 min 79°F3 ft

Wind History for Kahului, Kahului Harbor, HI
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kahului, Kahului Airport, HI10 mi19 minNE 1510.00 miPartly Cloudy83°F70°F65%1016.5 hPa
Lahaina - West Maui, HI21 mi23 minNE 1012.00 miA Few Clouds82°F68°F62%1016.6 hPa

Wind History from HOG (wind in knots)
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Last 24hrN14NE15NE16N15N17NE16NE18N15N12N9W8W8NW4E5SE4CalmSE4SE4S33SE7N34NE15
1 day agoNE17NE15N14NE14N13NE13NE12N13NE11NE11NE8NE5NE4NE7E4E3NE4CalmCalmCalmCalmSE3CalmN11
2 days agoNE18NE14
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NE18NE18NE15NE14NE9NE9N7N7N8NE4N7NE4CalmCalmN4N4NE8NE13

Tide / Current Tables for Kihei, Maui (Hawaii)
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Kihei
Click for Map
Wed -- 12:40 AM HST     Moonset
Wed -- 12:52 AM HST     First Quarter
Wed -- 04:12 AM HST     -0.03 feet Low Tide
Wed -- 05:45 AM HST     Sunrise
Wed -- 11:00 AM HST     1.45 feet High Tide
Wed -- 12:55 PM HST     Moonrise
Wed -- 03:57 PM HST     0.68 feet Low Tide
Wed -- 07:09 PM HST     Sunset
Wed -- 10:20 PM HST     1.72 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.30.80.40.1-000.20.50.81.11.41.41.41.20.90.70.70.70.91.11.41.61.71.7

Tide / Current Tables for Kahului, Kahului Harbor, Hawaii
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Kahului
Click for Map
Wed -- 12:40 AM HST     Moonset
Wed -- 12:52 AM HST     First Quarter
Wed -- 03:28 AM HST     0.39 feet Low Tide
Wed -- 05:45 AM HST     Sunrise
Wed -- 09:34 AM HST     1.12 feet High Tide
Wed -- 12:55 PM HST     Moonrise
Wed -- 01:58 PM HST     0.84 feet Low Tide
Wed -- 07:09 PM HST     Sunset
Wed -- 08:47 PM HST     1.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.10.80.50.40.40.50.70.911.11.11.110.90.80.911.21.51.71.81.91.81.6

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 (15,3,4,5)
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Ground Weather Radar Station Kohala, 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.