Thursday, July9, 2020
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Marine Weather and Tides
Hickam Housing, 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 5:55AMSunset 7:18PM Thursday July 9, 2020 1:35 AM HST (11:35 UTC) Moonrise 11:02PMMoonset 10:07AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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- 902 Pm Hst Wed Jul 8 2020
Rest of tonight..East winds 20 knots. Wind waves 6 feet. Isolated showers.
Thursday..East winds 20 knots. Wind waves 6 feet. Isolated showers.
Thursday night..East winds 20 knots. Wind waves 6 feet. Isolated showers.
Friday..East winds 20 knots. Wind waves 6 feet. Isolated showers through the day.
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 5 to 6 feet. Isolated showers.
Monday..East winds 15 knots. Wind waves 5 feet. Isolated showers.
PHZ100 902 Pm Hst Wed Jul 8 2020
Synopsis for hawaiian coastal waters.. High pressure far north of the islands will maintain fresh to strong trade winds through the weekend.


7 Day Forecast for Marine Location Near Hickam Housing, HI
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location: 21.31, -157.91     debug


Area Discussion for -
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FXHW60 PHFO 090628 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 828 PM HST Wed Jul 8 2020

SYNOPSIS. The breezy trade wind pattern will continue through early next week. Windward shower coverage is expected to increase late tonight through early Friday as a mid-level disturbance and higher moisture move through from east to west. Drier trade wind conditions will prevail Friday through early next week.

DISCUSSION. Latest surface analysis and satellite imagery showed the subtropical ridge anchored north of the islands and patchy low-level clouds approaching and moving through from east to west. Some of these clouds are generating brief showers as they move through - mainly over windward and mountain areas this evening. Rain gages around the islands reflect this and showed peak accumulations ranging from a quarter to half of an inch over the past 6-Hrs (through 7 pm HST). Although no significant changes are anticipated for much of the night, satellite-estimated precipitable water (PW) imagery depicted a decent sized area of higher moisture approaching from the east with the leading edge currently a few hundred miles east of Hilo (values up to around 1.6 to 1.7 inches).

Guidance has initialized well with this upstream moisture and shows it moving into the eastern end of the island chain late tonight into Thursday, then to the western end of the state late Thursday through early Friday. A combination of this moisture, a mid-level trough moving through and breezy trades will support an increase in windward shower coverage through this time. Some could be briefly heavy and make it into leeward areas. Drier air will follow beginning Friday as this moisture and mid-level feature shift west of the area.

Although confidence remains very low being this far out in time, model solutions are trending toward a wet middle- to latter-half of next week as a remnant trough associated with Tropical Storm Cristina in the far eastern Pacific approaches and moves into the area. Additional fine tuning of the forecast will be expected over the coming days as forecast confidence rises.

AVIATION. Strong high pressure far northeast of the state will continue to generate moderate to breezy trade wind flow. Surface wind speeds will decrease overnight, but redevelop Thursday afternoon. Breezy winds at summit level combined with a well defined inversion aloft at approximately 09kft are generating low level mechanical turbulence to the lee of higher terrain. AIRMET Tango will likely remain necessary through Thursday afternoon and possibly beyond.

Bands of low topped cumulus showers embedded in the trade wind flow will continue to impact mainly north and east facing slopes and coasts. Isolated MVFR CIG or VIS are to be expected in passing showers, otherwise VFR conditions will prevail all areas.

Meanwhile, across Leeward Big Island, light sea breezes will give way to weak land breezes within the next few hours. Partial clearing has already begun across Leeward and Interior Big Island, and mostly clear skies are expected by morning. Both the sea breezes and the interior cumulus build-ups will redevelop across leeward and Interior Big Island Thursday afternoon.

MARINE. Fresh to strong trade winds will prevail through the weekend and into early next week, as strong high pressure holds in place far north and northeast of the islands. 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 early next week.

No significant swells are due through much of the week. A mix of mainly background southerly swells will dominate, with a south- southwest swell giving south shore surf a bit of a boost Thursday and Friday. Trade wind swell will gradually build to around the summer average by Thursday, then hold into early next week. A small long-period swell from the tropical cyclone Cristina could arrive early next week as well. Surf along north facing shores will remain small through the next 7 days.

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 . Gibbs AVIATION . Bedal MARINE . Jelsema


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OOUH1 - 1612340 - Honolulu, HI 2 mi48 min E 4.1 G 7 78°F 81°F1017.9 hPa
51211 3 mi36 min 81°F3 ft
MOKH1 - 1612480 - Mokuoloe, HI 11 mi60 min E 8 G 11 79°F 82°F1017.9 hPa
51212 13 mi40 min 81°F3 ft
51202 - Mokapu Point, HI (098) 14 mi40 min 80°F7 ft
51207 14 mi40 min 80°F6 ft
51210 14 mi40 min 80°F6 ft
51201 - Waimea Bay, HI (106) 27 mi40 min 80°F4 ft

Wind History for Honolulu, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Daniel K Inouye International Airport, HI3 mi1.7 hrsE 1310.00 miMostly Cloudy79°F66°F65%1018.1 hPa
Oahu, Kalaeloa Airport, HI9 mi1.7 hrsVar 310.00 miOvercast76°F66°F74%1019.2 hPa
Kaneohe, Marine Corps Air Station, HI12 mi67 minE 9 G 1710.00 miOvercast0°F0°F%1017.3 hPa
Wheeler Air Force Base / Oahu, HI13 mi1.7 hrsW 35.00 miLight Rain Fog/Mist70°F69°F98%1017.6 hPa

Link to 5 minute data for PHNL

Wind History from HNL (wind in knots)
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1 day agoNE4NE4E9NE5NE44E7NE14NE13NE11
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Tide / Current Tables for Honolulu, Oahu (Hawaii)
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Honolulu
Click for Map
Thu -- 02:14 AM HST     0.15 feet Low Tide
Thu -- 05:56 AM HST     Sunrise
Thu -- 07:35 AM HST     0.74 feet High Tide
Thu -- 10:06 AM HST     Moonset
Thu -- 12:06 PM HST     0.38 feet Low Tide
Thu -- 07:17 PM HST     Sunset
Thu -- 07:22 PM HST     1.84 feet High Tide
Thu -- 11:01 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.30.20.20.30.50.60.70.70.70.50.40.40.40.60.81.11.51.71.81.81.61.41

Tide / Current Tables for Moku o Loe, Kaneohe Bay Oahu Island, Hawaii
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Moku o Loe
Click for Map
Thu -- 01:00 AM HST     0.35 feet Low Tide
Thu -- 05:56 AM HST     Sunrise
Thu -- 06:11 AM HST     0.84 feet High Tide
Thu -- 10:07 AM HST     Moonset
Thu -- 10:52 AM HST     0.58 feet Low Tide
Thu -- 05:58 PM HST     1.94 feet High Tide
Thu -- 07:17 PM HST     Sunset
Thu -- 11:02 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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 (7,2,3,4)
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Ground Weather Radar Station Molokai, HI
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weather_mapweather_map weather_map

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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.