Tuesday, June19, 2018 L-36.com


Marine Weather and Tides
Hilo, 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 7:02PM Tuesday June 19, 2018 5:30 PM HST (03:30 UTC) Moonrise 11:55AMMoonset 12:00AM Illumination 42% Phase: Waxing Crescent; 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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PHZ122 Big Island Windward Waters- 349 Pm Hst Tue Jun 19 2018
Tonight..East winds 10 knots. Wind waves 2 feet or less. Haze. Isolated showers.
Wednesday..East winds 15 knots. Wind waves 4 feet. Haze. Isolated showers.
Wednesday night..East winds 15 knots. Wind waves 4 feet. Haze. Isolated showers.
Thursday..East winds 15 knots. Wind waves 5 feet. SWell southeast 3 feet. Haze. Isolated showers.
Thursday night..East winds 20 knots. Wind waves 6 feet. SWell southeast 3 feet. Haze. Scattered showers.
Friday..East winds 20 knots. Wind waves 7 feet. SWell southeast 3 feet. Isolated showers.
Friday night..East winds 15 knots. Wind waves 7 feet. SWell southeast 3 feet. Scattered showers.
Saturday..East winds 15 knots. Wind waves 5 to 6 feet. SWell southeast 3 feet. Scattered showers.
Sunday..Northeast winds 15 knots. Wind waves 5 to 6 feet. SWell southeast 3 feet. Scattered showers.
PHZ100 349 Pm Hst Tue Jun 19 2018
Synopsis for hawaiian coastal waters.. A weak stationary front located just north of kauai will continue to dissipate through Wednesday. High pressure will begin to build on Wednesday evening and strengthen Thursday through Saturday.

7 Day Forecast for Marine Location Near Hilo, HI
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location: 19.72, -155.08     debug


Area Discussion for -
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Fxhw60 phfo 200143
afdhfo
area forecast discussion
national weather service honolulu hi
343 pm hst Tue jun 19 2018

Synopsis
A gentle trade wind pattern will continue through Wednesday with
afternoon leeward sea breezes. Some volcanic emissions will
spread over the smaller islands through Wednesday night. Building
high pressure will increase trade winds Thursday afternoon, and
push any emissions south of the smaller islands. Trade winds will
become breezy Friday and continue into next week.

Discussion
An old frontal boundary sagged far enough south to bring cloudy
skies to kauai today. The boundary is expected to move west and
dissipate late tonight. Very limited rainfall is expected through
Wednesday as the atmosphere remains stable with a mid and upper
ridge overhead. The surface ridge that has been persistently
positioned about 200 miles north of kauai will remain for another
day or so, bringing light trade winds to windward areas, and
afternoon seas breezes and nighttime land breezes to leeward
locations. Volcanic emissions will spread north along the windward
big island coast through Wednesday night as winds just above the
surface shift from the ese. This will allow some of those
emissions to reach the smaller islands.

Thursday, trade winds will be on the rise as high pressure builds
in from the NW and the surface ridge slowly retreats to the n.

Showers will focus over windward and mountain areas with an
occasional shower reaching leeward locations. Trade winds will be
breezy Friday and 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
Light trade winds and mainly dry weather will continue across the
state into Wednesday. There will be a short-lived, slight shift
in the trades from an easterly direction to a more southeasterly
direction. Expect mainlyVFR conditions again today through
Wednesday. There is a slight chance for MVFR condition in two
areas; the windward slopes with showers and clouds and those
areas on the big island, due to volcanic emissions (to include the
kona side now due to the shift in the winds.)
no airmets are in effect or anticipated through this afternoon.

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... Morrison
aviation... Chevalier
marine... Kino donaldson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ILOH1 - 1617760 - Hilo, HI 1 mi48 min ESE 6 G 13 86°F 78°F1014.1 hPa
51206 7 mi33 min 79°F4 ft
KWHH1 45 mi48 min W 4.1 G 7 80°F 82°F1014.1 hPa

Wind History for Hilo, Hilo Bay, Kuhio Bay, HI
(wind in knots)    EDIT      (on/off)   Help
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G11
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hilo, Hilo International Airport, HI1 mi37 minESE 810.00 miMostly Cloudy80°F69°F69%1014.6 hPa

Wind History from HTO (wind in knots)
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Last 24hrNE5NE3CalmNW4SW3SW5SW4SW5SW5SW6W5SW4SW4SW3Calm3NE8E6E7E9E11E9E9E8
1 day agoNE5N4NW4NW4NW3CalmSW4SW5SW5SW4SW5SW4SW4SW4NW5NE7N8N9N9N9N9N9N9N8
2 days agoE4CalmCalmSW3SW5SW5SW5SW4SW3SW3SW5SW5SW33SW4W4W4Calm6NE8NE7NE7NE6NE7

Tide / Current Tables for Hilo, Hilo Bay, Kunio Bay, Hawaii Island, Hawaii
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Hilo
Click for Map
Tue -- 02:54 AM HST     0.25 feet Low Tide
Tue -- 05:41 AM HST     Sunrise
Tue -- 08:33 AM HST     1.19 feet High Tide
Tue -- 11:54 AM HST     Moonrise
Tue -- 01:40 PM HST     0.50 feet Low Tide
Tue -- 07:01 PM HST     Sunset
Tue -- 08:35 PM HST     2.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.60.30.30.30.60.811.21.21.10.90.70.50.50.60.91.31.622.22.221.7

Tide / Current Tables for Kawaihae, Big Island, Hawaii
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Kawaihae
Click for Map
Tue -- 03:47 AM HST     -0.00 feet Low Tide
Tue -- 05:44 AM HST     Sunrise
Tue -- 09:59 AM HST     1.13 feet High Tide
Tue -- 11:57 AM HST     Moonrise
Tue -- 02:44 PM HST     0.62 feet Low Tide
Tue -- 07:05 PM HST     Sunset
Tue -- 09:18 PM HST     1.93 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.10.70.30.100.10.30.60.91.11.11.10.90.80.70.60.70.91.21.51.81.91.91.7

Weather Map and Satellite Images
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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 (23,6,7,8)
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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.