Sunday, July5, 2020
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Marine Weather and Tides
Heeia, 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 5:53AMSunset 7:18PM Sunday July 5, 2020 10:52 AM HST (20:52 UTC) Moonrise 8:13PMMoonset 6:23AM Illumination 100% Phase: Full Moon; Moon at 15 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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PHZ116 Kaiwi Channel- 941 Am Hst Sun Jul 5 2020
Rest of today..East winds 15 knots. Wind waves 4 feet. Isolated showers late in the morning, then scattered showers in the afternoon.
Tonight..East winds 15 knots. Wind waves 4 feet. Scattered showers in the evening, then isolated showers after midnight.
Monday..East winds 20 knots. Wind waves 4 feet. SWell south 3 feet. Isolated showers through the day.
Monday night..East winds 15 knots. Wind waves 4 feet. SWell south 3 feet. Isolated showers.
Tuesday..East winds 20 knots. Wind waves 4 feet. Isolated showers.
Tuesday night..East winds 20 knots. Wind waves 5 feet. Isolated showers.
Wednesday..East winds 20 knots. Wind waves 6 feet. Isolated showers.
Thursday..East winds 20 knots. Wind waves 6 to 7 feet. Isolated showers.
PHZ100 941 Am Hst Sun Jul 5 2020
Synopsis for hawaiian coastal waters.. Surface trough west of kauai will continue westward and away from the area through Monday. High pressure will build to the north through the week.


7 Day Forecast for Marine Location Near Heeia, HI
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location: 21.44, -157.81     debug


Area Discussion for -
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FXHW60 PHFO 051931 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 931 AM HST Sun Jul 5 2020

SYNOPSIS. Light to moderate easterly trade winds will be overpowered by afternoon sea breezes, leading to increased clouds and spotty showers over leeward areas. Trade winds will gradually increase on Monday and become locally breezy Tuesday into next weekend. The stronger trades will promote a typical summertime weather pattern, focusing rainfall along windward slopes and producing afternoon showers over leeward Big Island.

DISCUSSION. Light to moderate easterly trade winds have largely pushed away the batch of moisture that affected the state during the past day. However, a few showers remain hung up along the southeast slopes of the Big Island and over the mountains of windward Kauai this morning. The rest of the state is experiencing a lull in showers under a narrow slot of relatively drier air ahead of another band of moisture approaching from the east. Models suggest that this band will enhance windward rainfall late this afternoon into tonight. Meanwhile, sea breezes will overpower the trades across most leeward areas, leading to afternoon clouds and spotty showers, especially across sheltered leeward terrain including the burn area in Waianae Valley. The ridge aloft over the state remains rather weak, which means that some afternoon showers could be briefly heavy.

Easterly trade winds will remain somewhat suppressed tonight and will begin a gradual increase Monday afternoon. The incoming band of moisture will produce showers along mainly windward slopes tonight, possibly into early Monday morning on Kauai. Leeward shower activity will decrease during the evening as lingering convection dissipates and gives way to land breezes. Aside from trailing moisture over Kauai, showers should be less active on Monday as a drier and more stable airmass moves in from the east.

Trade winds will become locally breezy on Tuesday as high pressure builds far north of the state. A typical summertime weather pattern is expected into next weekend. Rainfall will be largely focused over windward slopes, while afternoon showers develop each afternoon over leeward Big Island. A ridge aloft will maintain stable conditions.

AVIATION. VFR conditions prevail at most TAF sites this morning. Periods of MVFR conditions are possible at times today mainly for windward locations such as PHTO and PHLI. Windward slopes and mountains may also see periods of MVFR conditions through the evening hours. Occasional MVFR conditions are also possible at PHNY through the evening hours. Daytime heating along with sea breeze convergence may cause some MVFR conditions this afternoon and evening over some interior and leeward locations as well.

MARINE. Light to moderate east-southeast winds will hold today as a weak trough west of Kauai continues westward away from the state. Winds will remain light enough for afternoon sea breezes to develop for some leeward coastal areas today. A return of a more typical trade wind pattern is anticipated Monday with winds reaching the moderate to fresh range. Winds should ramp up to fresh to strong by Tuesday, likely requiring a Small Craft Advisory for the typical 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. Seas will also approach advisory level (10 ft) over the Alenuihaha Channel and waters south of the Big Island by the end of the week.

Surf along south facing shores will remain small through the week, with mainly a mix of small south and south-southeast energy. For the extended, guidance depicts a a solid area gales setting up in the Tasman Sea through the first half of the week, which could result in an uptick in surf locally by mid July.

Surf along east facing shores will remain small through Tuesday, then gradually trend up through the rest of the week as the trades increase locally and upstream of the islands across the eastern Pacific. Surf along north facing shores will remain small through the upcoming week, however some spots exposed to trade wind wrap may bump up a bit through the second half of the upcoming week.

HFO WATCHES/WARNINGS/ADVISORIES. None.



DISCUSSION . Wroe AVIATION . Burke MARINE . TS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MOKH1 - 1612480 - Mokuoloe, HI 1 mi76 min E 1.9 G 6 83°F 81°F1016.9 hPa
51207 4 mi26 min 81°F3 ft
51210 4 mi26 min 81°F3 ft
51202 - Mokapu Point, HI (098) 7 mi26 min 80°F4 ft
OOUH1 - 1612340 - Honolulu, HI 10 mi52 min E 5.1 G 9.9 83°F 81°F1016.9 hPa (+0.0)
51211 13 mi112 min 81°F3 ft
51212 20 mi26 min 81°F3 ft
51201 - Waimea Bay, HI (106) 23 mi26 min 80°F3 ft

Wind History for Mokuoloe, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kaneohe, Marine Corps Air Station, HI2 mi70 minESE 710.00 miMostly Cloudy0°F0°F%1016.3 hPa
Daniel K Inouye International Airport, HI9 mi59 minESE 510.00 miPartly Cloudy82°F69°F66%1016.9 hPa
Wheeler Air Force Base / Oahu, HI12 mi56 minN 010.00 miOvercast80°F69°F70%1016.8 hPa
Oahu, Kalaeloa Airport, HI16 mi59 minSE 810.00 miFair84°F70°F63%1017.7 hPa

Link to 5 minute data for PHNG

Wind History from HNG (wind in knots)
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Last 24hrSW7SW9SW9NW5W6N4E9E6E6E6E8E6E4E3E3E3CalmE3E3E4E4SE6E8E7
1 day agoNE10NE10NE9NE9E11E7E9E8NE9NE12
G16
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2 days agoNE9NE10NE12NE11NE11NE11NE11NE10NE8NE6NE7NE7E9NE6NE7E5E4NE4NE6NE7NE7E7E7E10

Tide / Current Tables for Waikane, Kaneohe Bay, Oahu Island, Hawaii
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Waikane
Click for Map
Sun -- 02:11 AM HST     0.88 feet High Tide
Sun -- 05:54 AM HST     Sunrise
Sun -- 06:22 AM HST     Moonset
Sun -- 07:54 AM HST     0.02 feet Low Tide
Sun -- 03:04 PM HST     2.72 feet High Tide
Sun -- 07:17 PM HST     Sunset
Sun -- 08:13 PM HST     Moonrise
Sun -- 11:01 PM HST     0.33 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.80.90.80.70.50.30.100.10.511.62.22.62.72.62.31.91.410.60.40.3

Tide / Current Tables for Moku o Loe, Kaneohe Bay Oahu Island, Hawaii
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Moku o Loe
Click for Map
Sun -- 02:33 AM HST     0.68 feet High Tide
Sun -- 05:54 AM HST     Sunrise
Sun -- 06:23 AM HST     Moonset
Sun -- 07:58 AM HST     0.02 feet Low Tide
Sun -- 03:26 PM HST     2.52 feet High Tide
Sun -- 07:18 PM HST     Sunset
Sun -- 08:13 PM HST     Moonrise
Sun -- 11:05 PM HST     0.33 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.60.70.70.60.40.20.100.10.40.81.41.92.32.52.52.31.91.510.60.40.3

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 (16,3,4,5)
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Ground Weather Radar Station Molokai, 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.