Tuesday, July7, 2020
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Marine Weather and Tides
Kaumakani, 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 5:54AMSunset 7:20PM Monday July 6, 2020 11:32 PM HST (09:32 UTC) Moonrise 9:11PMMoonset 7:28AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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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PHZ112 Kauai Leeward Waters- 1006 Pm Hst Mon Jul 6 2020
Tonight..East winds 15 knots. Wind waves 4 feet. SWell south 3 feet. Isolated showers through the night.
Tuesday..East winds 15 knots. Wind waves 4 feet. SWell southeast 3 feet. Isolated showers in the morning.
Tuesday night..East winds 20 knots. Wind waves 5 feet. SWell southeast 3 feet. Isolated showers through the night.
Wednesday..East winds 15 knots. Wind waves 6 feet. Isolated showers.
Wednesday night..East winds 20 knots. Wind waves 6 feet. Isolated showers.
Thursday..East winds 20 knots. Wind waves 5 feet. Isolated showers.
Thursday night..East winds 15 knots. Wind waves 6 feet. Isolated showers.
Friday..East winds 15 knots. Wind waves 6 feet. Isolated showers.
Saturday..East winds 20 knots. Wind waves 6 feet. Isolated showers.
PHZ100 1006 Pm 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 Kaumakani, HI
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location: 21.91, -159.63     debug


Area Discussion for -
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FXHW60 PHFO 070640 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 840 PM HST Mon Jul 6 2020

SYNOPSIS. Trade winds will gradually strengthen over the next few days and will remain breezy through the weekend. Showers will continue to be focused over the windward slopes especially during the nights and early morning hours, and over leeward portions of the Big Island during the afternoons. A slight increase in trade wind showers are possible Wednesday and Thursday.

DISCUSSION. High pressure north of the state is expected to strengthen over the next couple of days, which will result in stronger trade winds over the region. Expected the winds to remain elevated into the weekend.

With the building trade wind flow, showers will generally remain focused over the windward sides of the islands, along with some afternoon clouds and showers over leeward slopes of the Big Island. Some bands of increased showers are expected to ride in on on the trade wind flow over the next few days, which will boost shower activity from time to time. As the trade winds increase, its possible for some of the showers to reach the leeward areas of the smaller islands.

No changes to the forecast this evening, and not expecting to make any significant changes.

AVIATION. Tonight, high pressure well to the north of the state will help generate moderate trade wind flow. Scattered showers, caught up in the flow, will press up against the windward coasts and slopes. This activity will likely bring periods of MVFR conditions due to lowered ceilings and decreased visibility. Isolated showers expected elsewhere across the region.

No AIRMETs are currently in effect.

MARINE. Trade winds will increase to fresh to strong Tuesday. A Small Craft Advisory (SCA) is in effect for the windier waters around Maui County and the Big Island. The SCA will likely be extended in time and expanded to additional marine areas as the trades accelerate further this 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.

HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 PM HST Wednesday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . M Ballard AVIATION . Thomas MARINE . Morrison


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWWH1 - 1611400 - Nawiliwili, HI 15 mi62 min NE 8.9 G 12 79°F 85°F1018.7 hPa
51201 - Waimea Bay, HI (106) 82 mi36 min 80°F3 ft

Wind History for Nawiliwili, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kekaha, Pacific Missile Test Facility Barking Sands, HI14 mi36 minNE 310.00 miFair76°F63°F64%1018 hPa
Lihue, Lihue Airport, HI16 mi39 minENE 1410.00 miMostly Cloudy78°F73°F85%1018.5 hPa

Link to 5 minute data for PHBK

Wind History from HBK (wind in knots)
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Last 24hrCalmE4NE4E4NE4E3E4SE3E36N5NW54SW7S7S10SW9SW9SW11SW9S7E3E3NE3
1 day agoSE4SE3E8NW4CalmCalmE4CalmNW3W3SW6W4N11N10S7W4SW7W3S7S7SE9E4CalmCalm
2 days agoE4E4E3E4SE4E3N3CalmCalmE10SE8SE11
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N7N5W4W5CalmNW3NW4E3N4NE5Calm

Tide / Current Tables for Hanamaulu Bay, Kauai Island, Hawaii
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Hanamaulu Bay
Click for Map
Tue -- 12:37 AM HST     0.13 feet Low Tide
Tue -- 05:21 AM HST     0.52 feet High Tide
Tue -- 05:59 AM HST     Sunrise
Tue -- 08:24 AM HST     Moonset
Tue -- 10:14 AM HST     0.05 feet Low Tide
Tue -- 05:50 PM HST     2.10 feet High Tide
Tue -- 07:24 PM HST     Sunset
Tue -- 09:53 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.10.20.30.50.50.50.40.30.10.10.10.30.611.41.822.121.71.30.90.5

Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii
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Hanalei Bay
Click for Map
Tue -- 04:10 AM HST     0.62 feet High Tide
Tue -- 06:00 AM HST     Sunrise
Tue -- 08:24 AM HST     Moonset
Tue -- 08:48 AM HST     0.05 feet Low Tide
Tue -- 04:39 PM HST     2.20 feet High Tide
Tue -- 07:25 PM HST     Sunset
Tue -- 09:54 PM HST     Moonrise
Tue -- 11:50 PM HST     0.14 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.30.40.60.60.60.40.30.10.10.10.40.71.21.622.22.221.71.20.80.40.2

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 (5,6,7,8)
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Ground Weather Radar Station Kauai, 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.