Friday, July10, 2020
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Marine Weather and Tides
Kaneohe Station, 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 7:18PM Thursday July 9, 2020 8:53 PM HST (06:53 UTC) Moonrise 11:02PMMoonset 10:06AM Illumination 77% Phase: Waning Gibbous; Moon at 20 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- 335 Pm Hst Thu Jul 9 2020
Tonight..East winds 20 knots. Wind waves 7 feet. Scattered showers.
Friday..East winds 20 knots. Wind waves 7 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Friday night..East winds 20 knots. Wind waves 7 feet. Isolated showers.
Saturday..East winds 20 knots. Wind waves 7 feet. Isolated showers.
Saturday night..Northeast winds 20 knots. Wind waves 6 feet. Isolated showers.
Sunday..Northeast winds 20 knots. Wind waves 6 feet. Isolated showers through the day.
Sunday night..Northeast winds 20 knots. Wind waves 6 feet. Isolated showers.
Monday..East winds 15 knots. Wind waves 5 feet. Isolated showers.
Tuesday..East winds 20 knots. Wind waves 6 feet. Isolated showers.
PHZ100 335 Pm Hst Thu Jul 9 2020
Synopsis for hawaiian coastal waters.. High pressure far north of the islands will maintain fresh to strong trade winds into early next week. Winds may slightly decrease around Tuesday of next week as a weak disturbance passes north of the state.


7 Day Forecast for Marine Location Near Kaneohe Station, HI
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location: 21.47, -157.77     debug


Area Discussion for -
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FXHW60 PHFO 100629 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 829 PM HST Thu Jul 9 2020

SYNOPSIS. A strong surface high centered far north of the main Hawaiian Islands will keep breezy trade winds in the forecast into the first half of next week. An upper level low lingering north of the state and a few low level troughs will keep periods of showers in the forecast mainly focused on Windward and Mountain areas, with a few showers spilling into Leeward areas especially in the evening and overnight hours. Day to day shower trends will vary a bit as the low level troughs pass through each island.

DISCUSSION. The evening GOES satellite imagery shows several upper level lows north of the island chain and a low level trough drifting westward through Oahu and Kauai. Cloud bands east of Maui and the Big Island appear more stable stratocumulus in nature which may produce a slight downward trend in shower activity over the eastern half of the state by the weekend.

Our large scale weather pattern shows a breezy trade wind pattern continues into the first half of next week, courtesy of a strong high pressure system locked in place north of the state. Meanwhile an unstable upper low center will linger north of the islands as several low level troughs drift from east to west across each island. The upper low will bring added instability to the region and as low level troughs move through each island the surface convergence will trigger increasing shower trends. Day to day weather changes are expected due to changes in low level stability after each trough passes through the state. Trade wind speeds will return to more moderate levels from Wednesday onward with periods of increased shower trends remaining in the forecast through the end of next week.

The current forecast looks good in a trade wind weather pattern. Only minor changes are expected for the morning forecast grids.

AVIATION. PHNY and PHTO will have some lower level cloud coverage this evening but that should gradually clear out during the overnight hours. Expect mostly VFR conditions elsewhere across the state. Brief, passing MVFR conditions are possible in windward mauka areas with a few showers through Friday. Though east-northeast tradewinds will weaken diurnally overnight, the breezy conditions will return through the day on Friday.

AIRMET Tango is currently in effect for low-level turbulence below 9Kft. This AIRMET should be canceled later tonight but most likely will be in effect again with breezy conditions Friday.

MARINE. High pressure far north and northeast of the state will maintain fresh to strong trade winds into early next week. Expect minor fluctuations, with trades slightly increasing Friday and Saturday. A Small Craft Advisory (SCA) remains in effect for the typically windier waters around Maui and the Big Island through Sunday. This SCA will likely need to be extended into Monday. Models suggest a brief wind decrease next Tuesday as a weak disturbance passes north of the state. Winds could briefly drop below SCA thresholds next Tuesday.

No significant swells are due through much of next week. A mix of background south and southeast swells will continue to produce small surf along south facing shores through next week. A small south-southwest swell will likely hold through Friday morning and taper off in the afternoon. Trade wind swell will gradually build through Friday, then hold into early next week. Additionally, a small long-period swell from tropical cyclone Cristina could arrive early next week. Surf along north facing shores will remain nearly flat through next week.

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 . Bohlin AVIATION . Chevalier MARINE . Powell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51207 1 mi57 min 80°F6 ft
51210 1 mi27 min 80°F6 ft
MOKH1 - 1612480 - Mokuoloe, HI 3 mi77 min E 6 G 13 80°F 82°F
51202 - Mokapu Point, HI (098) 6 mi27 min 80°F6 ft
OOUH1 - 1612340 - Honolulu, HI 13 mi53 min ESE 6 G 13 80°F 81°F1016.4 hPa (+0.7)
51211 16 mi83 min 81°F3 ft
51201 - Waimea Bay, HI (106) 23 mi27 min 80°F4 ft
51212 23 mi27 min 81°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, HI1 mi1.9 hrsE 10 G 1710.00 miOvercast81°F71°F72%1014.8 hPa
Daniel K Inouye International Airport, HI12 mi60 minENE 1010.00 miMostly Cloudy81°F68°F65%1016 hPa
Wheeler Air Force Base / Oahu, HI14 mi57 minENE 410.00 miMostly Cloudy75°F68°F81%1016.5 hPa
Oahu, Kalaeloa Airport, HI19 mi60 minVar 510.00 miOvercast80°F69°F69%1017.2 hPa

Link to 5 minute data for PHNG

Wind History from HNG (wind in knots)
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Last 24hrE10E6SE6E7E9
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1 day agoE10E8E9E10
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2 days agoE10E9E8
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E9NE11NE10E14E6E10

Tide / Current Tables for Waikane, Kaneohe Bay, Oahu Island, Hawaii
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Waikane
Click for Map
Fri -- 01:32 AM HST     0.37 feet Low Tide
Fri -- 05:56 AM HST     Sunrise
Fri -- 06:57 AM HST     1.14 feet High Tide
Fri -- 10:57 AM HST     Moonset
Fri -- 11:46 AM HST     0.77 feet Low Tide
Fri -- 06:14 PM HST     1.93 feet High Tide
Fri -- 07:17 PM HST     Sunset
Fri -- 11:35 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.40.40.50.70.91.11.11.110.90.80.80.811.31.61.81.91.91.71.51.20.9

Tide / Current Tables for Waimanalo, Oahu Island, Hawaii
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Waimanalo
Click for Map
Fri -- 01:41 AM HST     0.14 feet Low Tide
Fri -- 05:55 AM HST     Sunrise
Fri -- 07:28 AM HST     0.72 feet High Tide
Fri -- 10:56 AM HST     Moonset
Fri -- 11:55 AM HST     0.48 feet Low Tide
Fri -- 06:45 PM HST     1.39 feet High Tide
Fri -- 07:16 PM HST     Sunset
Fri -- 11:34 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.20.10.20.40.50.60.70.70.70.60.50.50.50.60.811.21.41.41.31.10.90.6

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 (2,6,7,8)
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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.