Monday, July6, 2020
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Marine Weather and Tides
Laupahoehoe, HI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:45AMSunset 7:04PM Monday July 6, 2020 11:28 AM HST (21:28 UTC) Moonrise 8:47PMMoonset 7:08AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 934 Am Hst Mon Jul 6 2020
Rest of today..East winds 15 knots. Wind waves 3 feet. SWell southeast 3 feet. Isolated showers.
Tonight..East winds 15 knots. Wind waves 4 feet. Isolated showers in the evening, then scattered showers after midnight.
Tuesday..East winds 15 knots. Wind waves 4 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Tuesday night..East winds 15 knots. Wind waves 4 feet. Isolated showers in the evening, then scattered showers after midnight.
Wednesday..East winds 15 knots. Wind waves 5 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Wednesday night..East winds 15 knots. Wind waves 5 feet. Isolated showers in the evening, then scattered showers after midnight.
Thursday..East winds 20 knots. Wind waves 6 feet. Scattered showers.
Friday..East winds 20 knots. Wind waves 6 feet. Scattered showers.
PHZ100 934 Am Hst Mon Jul 6 2020
Synopsis for hawaiian coastal waters.. High pressure will build north of the area through the week.


7 Day Forecast for Marine Location Near Laupahoehoe, HI
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location: 20.8, -154.34     debug


Area Discussion for -
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FXHW60 PHFO 061921 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 921 AM HST Mon Jul 6 2020

SYNOPSIS. Trade winds will gradually increase today, and become locally breezy on Tuesday, lasting into the weekend. More typical trade wind showers will return today, focused over the windward slopes, and producing afternoon showers over leeward portions of the Big Island.

DISCUSSION. High pressure building north of the state will bring a gradual increase of trade winds during the next 48 hours. The current light to moderate trade winds are expected to become breezy by Tuesday afternoon then persist through the rest of the week.

As far as precipitation, the trade winds will focus passing showers over windward and mauka areas with a few isolated showers making its way over to leeward areas from time to time. A slight uptick of moisture will bring subtle increases in trade wind showers on Wednesday and Thursday. Typical breezy trade wind weather is expected for next weekend.

AVIATION. High pressure far to the north of the state will keep light to locally moderate trade wind flow in place through twenty-four hours. Ragged clouds and isolated showers will continue to impact mainly north and east facing slopes and coasts. Shower activity is expected to increase after midnight due to nocturnal cloud top cooling.

AIRMET Sierra for mountain obscuration across Windward Kauai has been canceled, but mountain obscuration may become an issue again for windward slopes late tonight or Tuesday morning. For this afternoon and evening, VFR conditions are expected to prevail all areas with the exception of brief MVFR CIG or VIS in showers.


MARINE. Trade winds will increase today into the moderate to fresh range. Winds are expected to ramp up to fresh to strong tonight and Tuesday, likely requiring a Small Craft Advisory for the windier waters around Maui County and the Big Island. The advisory may need to be expanded to additional marine areas as the trades continue to increase though the week.

Surf along south facing shores will remain small through the week, with mainly a mix of small south and south-southeast energy. A slightly larger south swell arriving late Wednesday may bump up surf heights Thursday. Surf along east facing shores will rise slowly this week as the trades increase locally and upstream of the islands. Surf along north facing shores will remain small through the upcoming week.

HFO WATCHES/WARNINGS/ADVISORIES. None.



DISCUSSION . Kino AVIATION . Bedal MARINE . TS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ILOH1 - 1617760 - Hilo, HI 83 mi59 min ENE 4.1 G 8.9 77°F 80°F1016.4 hPa

Wind History for Hilo, Hilo Bay, Kuhio Bay, HI
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hilo, Hilo International Airport, HI84 mi36 minVar 410.00 miMostly Cloudy83°F66°F59%1017.6 hPa

Link to 5 minute data for PHTO

Wind History from HTO (wind in knots)
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Last 24hrSE11E8E10E8E8E7NE7NE5NE3CalmW4W5CalmSW3W6W3SW3SW4SW5SW5SW3E7E74
1 day agoE9E11E9E11E12E8E8SE10CalmS3S3S8SW5W4W4W3SW3S4SW7W5SW3SE7SE10SE9
2 days agoSE8E10E9E11SE11SE13SE10E9SE5S3SE3SE6S3CalmSW5SW7W7SW4W7SW6W4CalmCalm5

Tide / Current Tables for Hilo, Hilo Bay, Kunio Bay, Hawaii Island, Hawaii
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Hana, Maui Island, Hawaii
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Hana
Click for Map
Mon -- 03:34 AM HST     1.09 feet High Tide
Mon -- 05:48 AM HST     Sunrise
Mon -- 07:15 AM HST     Moonset
Mon -- 08:31 AM HST     -0.08 feet Low Tide
Mon -- 04:16 PM HST     2.83 feet High Tide
Mon -- 07:09 PM HST     Sunset
Mon -- 08:53 PM HST     Moonrise
Mon -- 11:35 PM HST     0.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.50.91.11.10.90.60.2-0-0.10.10.51.11.72.22.62.82.82.41.91.30.80.40.2

Weather Map
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wmap_P
GEOS 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
Wind Forecast for (17,4,5,8)
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Ground Weather Radar Station Kohala, HI
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weather_mapweather_map weather_map

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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 numerous 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.