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Marine Weather and Tides Wainaku, HI Version 3.4

NOTICE 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 6:02AM

Sunset 6:43PM

Saturday August 24, 2019 10:24 AM HST (20:24 UTC)

Moonrise 12:20AM

Moonset 1:47PM

Illumination 32%

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.

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7 Day Forecast for Marine Location Near Wainaku, HI

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Area Discussion for -

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Fxhw60 phfo 241949 afdhfo area forecast discussion national weather service honolulu hi 949 am hst Sat aug 24 2019 Synopsis A trade wind weather pattern can be expected over the next few days, thanks to high pressure far north of the area. Clouds and passing light showers will tend to favor windward and mauka areas with most leeward locations remaining dry. Trade winds will become lighter during the middle and latter half of next week as the high moves off to the northeast. A few passing light showers can be expected mainly over windward and mauka area. Discussion Satellite imagery shows patches of low clouds embedded in low level easterly trade wind flow. This is providing for some passing light showers over windward and mauka areas with most leeward locations remaining dry. Expect these conditions to continue through the day today with some clouds and showers possible for the leeward big island slopes during the afternoon and evening hours. Surface high pressure is centered far north of the state. This places the islands in a moderate to locally breezy trade wind environment. Aloft, there is a mid level ridge in place over the area. This is providing for a rather stable airmass to be in place across the state. Thus any showers that do form will tend to be on the lighter side due to inhibited cloud growth. Precipitable water values are currently running between 1.2 inches and 1.4 inches across the area. However satellite derived precipitable water values of 1.6 to 1.8 inches is present just east of maui and the big island. Model guidance shows this higher moisture content moving into the eastern islands later today and tonight. This may cause a bit of an uptick in showers over windward areas of maui the the big island this afternoon and tonight with lesser of an increase in shower activity expected over the rest of the state. The surface high will continue to keep moderate to breezy trade winds in place through Monday while the upper ridge will keep inversion heights low with only light windward and mauka showers expected. Afternoon and evening clouds and showers are also expected over the leeward big island slopes. During the Tuesday through Friday time frame, the high is forecast to weaken and move off to the northeast. This will cause our trade winds to weaken to the light to locally moderate range. Localized land and sea breezes may develop under this lighter trade wind regime. Meanwhile, the state is forecast to lie between a mid level ridge northwest of the state and a mid level trough just east of the state. Thus instability will be limited under this scenario. Shower activity will be highly dependent on incoming moisture availability and primarily focused over windward and

mauka area. Daytime heating may allow for some afternoon shower development over interior areas as well as over the leeward big island slopes. Aviation High pressure center still north-northeast of hawaii and will continue to bring breezy easterly tradewinds to the state. Although we haven't had any recent reports of turbulence, will keep airmet tango in effect for low level turbulence below 8,000ft. Airmet tango will probably be in effect through Sunday. Expect showers and low level clouds to be mainly confined to the north thru east sections of all islands on the windward slopes but any MVFR conditions should be passing. Otherwise, expectVFR conditions for the rest of the state. Marine Fresh to strong easterly trade winds, already in place across big island and maui waters, will spread westward on Sunday as high pressure holds far north of the state and a surface trough northwest of kauai moves away. The small craft advisory (sca) that is in place for the typically windy waters around the big island and maui will need to be briefly expanded to additional waters. Trades will gradually decrease during the first half of the work week as the high weakens and drifts to the northeast. The SCA will likely be trimmed back to the typically windy waters on Monday and should be dropped entirely by Tuesday. South shore surf will be below summer average for the next few days, and a southwest swell out of the tasman sea is due to arrive Tuesday and peak Wednesday and Thursday. Islands in the southwest pacific usually block a significant amount of energy from swell sources out of the tasman sea, but we could see inconsistent sets above august average during the peak. This swell will decrease heading into next weekend. Rough, short period trade wind energy is coming in at 6 ft 7 seconds, which is right around august average. Expect a slight and brief increase in east shore surf on Sunday as trades strengthen, followed by a gradual decline to near average conditions on Monday and well below august average for the remainder of the week. Small north shore surf will fade tomorrow as the current small pulse of northwest swell diminishes. Hfo watches warnings advisories Small craft advisory until 6 pm hst Sunday for maalaea bay- pailolo channel-alenuihaha channel-big island leeward waters-big island southeast waters. Discussion... Burke aviation... Chevalier marine... Wroe

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
ILOH1 - 1617760 - Hilo, HI	0 mi	55 min	WNW 1 G 1	80°F	82°F		1015.6 hPa
51206	6 mi	39 min			82°F	5 ft
KWHH1	46 mi	61 min	NNW 6 G 9.9	87°F	83°F		1013.1 hPa

Wind History for Hilo, Hilo Bay, Kuhio Bay, HI

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Hilo, Hilo International Airport, HI	1 mi	32 min	N 0	10.00 mi	Overcast	82°F	70°F	67%	1015.7 hPa

Link to 5 minute data for PHTO

Wind History from HTO (wind in knots)

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Tide / Current Tables for Hilo, Hawaii Island, Hawaii

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Tide / Current Tables for Kawaihae, Big Island, Hawaii

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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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for (16,3,4,5)

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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.