Thursday, June21, 2018 L-36.com


Marine Weather and Tides
Wainaku, 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 5:41AMSunset 7:03PM Wednesday June 20, 2018 6:57 PM HST (04:57 UTC) Moonrise 12:50PMMoonset 12:34AM Illumination 53% Phase: First Quarter Moon; Moon at 8 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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PHZ122 Big Island Windward Waters- 328 Pm Hst Wed Jun 20 2018
Tonight..East winds 15 knots. Wind waves 3 feet. Haze. Isolated showers.
Thursday..East winds 15 knots. Wind waves 4 feet. SWell southeast 3 feet. Haze. Isolated showers.
Thursday night..East winds 15 knots. Wind waves 4 feet. SWell southeast 3 feet. Haze. Scattered showers.
Friday..East winds 15 knots. Wind waves 5 feet. SWell southeast 3 feet. Isolated showers.
Friday night..East winds 20 knots. Wind waves 5 feet. SWell southeast 3 feet. Scattered showers.
Saturday..East winds 20 knots. Wind waves 6 feet. SWell southeast 3 feet. Scattered showers.
Saturday night..East winds 20 knots. Wind waves 6 feet. SWell southeast 3 feet. Scattered showers.
Sunday..East winds 15 knots. Wind waves 5 feet. SWell southeast 3 feet. Scattered showers.
Monday..East winds 15 knots. Wind waves 5 feet. SWell southeast 3 feet. Scattered showers.
PHZ100 328 Pm Hst Wed Jun 20 2018
Synopsis for hawaiian coastal waters.. A stalled frontal boundary located north of the hawaiian islands will dissipate tonight. High pressure will build northeast of the area Thursday into early next week.

7 Day Forecast for Marine Location Near Wainaku, HI
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location: 19.73, -155.06     debug


Area Discussion for -
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Fxhw60 phfo 210209
afdhfo
area forecast discussion
national weather service honolulu hi
409 pm hst Wed jun 20 2018

Synopsis
Trade winds will increase tonight as high pressure builds far
northwest of the state. Volcanic haze lingering over the smaller
islands will clear by morning. Trade winds will become breezy
Friday and continue into next week. Showers will affect mainly
windward and mountain areas with an increase in rainfall possible
early next week.

Discussion
A surface ridge that has been persistently positioned just north
of the islands will slowly retreat tonight as high pressure builds
from the northwest. Trade winds will gradually increase with
moderate to breezy trade winds expected Thursday. The volcanic
haze the reached the smaller islands today will clear to the
southwest as trade winds increase. Showers will focus over
windward and mountain areas with an occasional shower reaching
leeward locations. Trade winds will increase another notch
Friday and remain breezy through the weekend as a 1035 mb high
pressure system takes firm control of the weather pattern in the
central pacific. Aloft, global models are indicating a weak upper
low will drift close to hawaii from the east and weaken our trade
wind inversion. This would allow for increasing cloud tops and the
potential for an increase in showers Sunday and into next week.

Aviation
Mainly dry weather will continue across the state through tonight,
withVFR conditions prevailing. Isolated MVFR ceilings are
possible on windward slopes in light showers. Areas of MVFR
visibilities are possible across parts of the big island due to
volcanic emissions from kilauea. Trade winds will begin to
increase tonight, becoming breezy tomorrow. This could lead to a
slight increase in windward mauka clouds and showers.

No airmets are currently in effect or anticipated through tonight.

Marine
Fresh to strong trades are forecast to return starting late
tonight as high pressure strengthens far northeast of the area. A
small craft advisory will likely be needed on Thursday afternoon
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 return later tonight and increase Friday
through the upcoming weekend. Overlapping long-period south swells
are expected next week with the first swell expected to arrive
around Tuesday. More details on surf heights will be given as the
swell reaches the buoy near american samoa.

Hfo watches warnings advisories
None.

Discussion... Morrison
aviation... Ts
marine... Kino foster


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ILOH1 - 1617760 - Hilo, HI 0 mi58 min ESE 6 G 11 83°F 79°F1015.1 hPa (-0.0)
51206 6 mi61 min 79°F4 ft
KWHH1 46 mi58 min WSW 9.9 G 11 80°F 83°F1014.2 hPa (+0.0)

Wind History for Hilo, Hilo Bay, Kuhio Bay, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hilo, Hilo International Airport, HI1 mi65 minESE 910.00 miPartly Cloudy79°F70°F74%1015.3 hPa

Wind History from HTO (wind in knots)
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Last 24hrSE4CalmCalmS3CalmCalmCalmCalmSW3S3CalmCalmSW3Calm3NE3E6NE8E12SE9E10SE9SE9SE9
1 day agoNE3CalmNW4SW3SW5SW4SW5SW5SW6W5SW4SW4SW3Calm3NE8E6E7E9E11E9E9E8SE6
2 days agoN4NW4NW4NW3CalmSW4SW5SW5SW4SW5SW4SW4SW4NW5NE7N8N9N9N9N9N9N9N8NE5

Tide / Current Tables for Hilo, Hilo Bay, Kunio Bay, Hawaii Island, Hawaii
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Hilo
Click for Map
Thu -- 01:14 AM HST     Moonset
Thu -- 04:36 AM HST     0.04 feet Low Tide
Thu -- 05:42 AM HST     Sunrise
Thu -- 11:25 AM HST     1.68 feet High Tide
Thu -- 01:44 PM HST     Moonrise
Thu -- 04:48 PM HST     0.91 feet Low Tide
Thu -- 07:01 PM HST     Sunset
Thu -- 10:22 PM HST     1.78 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.10.60.30.10.10.20.50.91.21.51.71.71.51.31.10.90.911.21.41.61.81.8

Tide / Current Tables for Kawaihae, Big Island, Hawaii
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Kawaihae
Click for Map
Thu -- 01:17 AM HST     Moonset
Thu -- 05:17 AM HST     -0.03 feet Low Tide
Thu -- 05:44 AM HST     Sunrise
Thu -- 12:16 PM HST     1.63 feet High Tide
Thu -- 01:47 PM HST     Moonrise
Thu -- 05:58 PM HST     0.80 feet Low Tide
Thu -- 07:05 PM HST     Sunset
Thu -- 11:10 PM HST     1.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.10.80.40.1-000.20.50.91.31.51.61.61.41.210.90.80.911.21.41.4

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 (0,6,7,8)
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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.