Wednesday, July17, 2019 L-36.com


Marine Weather and Tides
Kaneohe Station, HI

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:57AMSunset 7:17PM Wednesday July 17, 2019 6:28 AM HST (16:28 UTC) Moonrise 8:15PMMoonset 6:41AM 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- 325 Am Hst Wed Jul 17 2019
.small craft advisory in effect through Friday afternoon...
Today..East winds to 25 knots. Wind waves 9 feet. South swell 3 feet. Isolated showers through the day.
Tonight..East winds to 25 knots. Wind waves 9 feet. Isolated showers in the evening, then scattered showers after midnight.
Thursday..East winds to 25 knots. Wind waves 9 feet. Isolated showers.
Thursday night..East winds to 25 knots. Wind waves 8 feet. Isolated showers in the evening, then scattered showers after midnight.
Friday..East winds to 25 knots. Wind waves 8 feet. Scattered showers.
Friday night..East winds 20 knots. Wind waves 8 feet. Scattered showers in the evening, then isolated showers after midnight.
Saturday..East winds 15 knots. Wind waves 6 feet. Scattered showers.
Sunday..Northeast winds 15 knots. Wind waves 5 feet. Scattered showers.
PHZ100 325 Am Hst Wed Jul 17 2019
Synopsis for hawaiian coastal waters.. High pressure north of the state will keep fresh to strong trades in place through Friday. The trades will then ease over the weekend as the high pressure to the north weakens.


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 171345
afdhfo
area forecast discussion
national weather service honolulu hi
400 am hst Wed jul 17 2019

Synopsis
Trade wind weather will continue through the remainder of the week
into early next week, thanks to high pressure far north of the
area. Clouds and passing showers will favor windward and mauka
areas. Leeward sections of the big island will see clouds and
showers mainly during the afternoon and evening hours.

Discussion
Locally breezy trade winds prevail across the islands early this
morning as a surface high persists far north of the state. An upper
level trough in the island vicinity is still bringing some airmass
instability in the island vicinity, especially over the western
islands. Early morning lihue sounding pretty much confirmed that,
depicting a somewhat moist and unstable airmass, with low level
moisture extending to about 8 thousand feet. Early morning hilo
sounding depicted a more stable and drier airmass, with low level
moisture extending to about 6 thousand feet. Low clouds embedded in
the trade winds are passing over the islands at times, bringing some
showers to mainly windward and mountain areas. Winds are strong
enough to carry some of the clouds and showers to the lee areas of
the smaller islands.

The upper level trough in the island vicinity will move northwest
today. As such, airmass in the island vicinity will become more
stable. Latest forecast solutions still hinted a slight decrease in
moisture across the area today, though satellite imagery does show
lines of low clouds just east of the islands. These lines of clouds
will bring more showers to the area, at least through the rest of
the morning. Meanwhile, the aforementioned high will persist far
north through the rest of the week, and strengthen slightly through
Thursday. Overall, breezy trade wind weather will prevail across the
islands through the next few days. The airmass may still be unstable
enough for a slight chance of an upslope thunderstorm over the big
island this afternoon. Forecast models hinted an increase in
moisture for the islands Thursday. Hence the islands may see a
slight increase of passing clouds and showers then.

The high to our north is expected to slowly weaken by the weekend
into early next week. This points to a slight downward trend in
trade wind speeds for that period. Furthermore, the aforementioned
upper level trough may sag back southward, closer to the state. This
may lead to a slight uptick in shower activity, mainly for windward
and mauka areas. Daytime heating will continue to allow for clouds
and showers to form over the leeward big island slopes each
afternoon and evening.

Aviation
A 1031 mb high north of the hawaiian islands will generate breezy to
occasionally windy easterly trades for the next 24-hours. Expect
scattered showers to affect mainly windward and mauka areas with
isolated showers passing over and onto the leeward side.

Periods of MVFR conditions could develop along the windward slopes
through early this morning, as low clouds and shra may create
mountain obscuration.

Airmet tango remain in effect below 8000 ft for areas south thru
west of mountain ranges due to tempo moderate turbulence.

Marine
High pressure north of the state will keep fresh to strong trades in
place through Friday. The trades are expected to ease slightly over
the weekend, as high pressure to the north weakens. A small craft
advisory (sca) remains in effect for most waters between oahu and
the big island. Fresh trades are expected for the remaining waters
not in the sca, with winds likely flirting with SCA levels at times.

We will continue to monitor observational and model trends over the
next few days, and expand the SCA to additional marine zones if
needed.

The current south swell will continue to slowly subside today and
tonight, with only small background south and southwest swells
expected Thursday through the weekend. A bit of a boost in south
shore surf is possible early next week, as a pair of overlapping
southwest swells move through. Locally strong trade winds will
produce choppy waves along east facing shores into the weekend. East
shore surf will get a boost Thursday and Friday as the upstream
fetch of trade winds increases. Surf is expected to stay below
advisory levels along east facing shores Thursday and Friday and
slowly lower over the weekend as trades ease.

Hfo watches warnings advisories
Small craft advisory until 6 am hst Saturday for maalaea bay-
pailolo channel-alenuihaha channel-big island leeward waters-big
island southeast waters.

Small craft advisory until 6 pm hst Friday for oahu leeward
waters-kaiwi channel-maui county windward waters-maui county
leeward waters.

Discussion... Hui
aviation... Thomas
marine... Jelsema


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51207 1 mi34 min 81°F6 ft
51210 1 mi58 min 81°F6 ft
MOKH1 - 1612480 - Mokuoloe, HI 3 mi52 min E 5.1 G 9.9 80°F 83°F1015.4 hPa
51202 - Mokapu Point, HI (098) 6 mi58 min 81°F7 ft
OOUH1 - 1612340 - Honolulu, HI 13 mi58 min E 6 G 12 79°F 82°F1014.8 hPa
51211 16 mi58 min 82°F4 ft
51201 - Waimea Bay, HI (106) 23 mi46 min 78°F4 ft
51212 23 mi58 min 82°F4 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 mi48 minE 710.00 miMostly Cloudy74°F70°F88%1014.6 hPa
Daniel K Inouye International Airport, HI12 mi35 minENE 1310.00 miA Few Clouds80°F68°F67%1014.8 hPa
Wheeler Air Force Base / Oahu, HI14 mi92 minENE 710.00 miFair74°F66°F77%1014 hPa

Wind History from HNG (wind in knots)
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Last 24hrE6NE7E8NE10NE7NE10NE10E11
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1 day ago----------E10E10E10NE9NE10NE10NE13E10E10E10E10
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2 days agoE8NE10E12E10
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G20
E7E9E8E7--E4--

Tide / Current Tables for Honolulu, Honolulu Harbor, Oahu 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 Hanauma Bay, Oahu Island, Hawaii
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Hanauma Bay
Click for Map
Wed -- 03:14 AM HST     0.71 feet High Tide
Wed -- 05:58 AM HST     Sunrise
Wed -- 06:41 AM HST     Moonset
Wed -- 08:43 AM HST     0.01 feet Low Tide
Wed -- 03:57 PM HST     2.25 feet High Tide
Wed -- 07:15 PM HST     Sunset
Wed -- 08:14 PM HST     Moonrise
Wed -- 11:28 PM HST     0.24 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.50.60.70.70.60.40.2000.20.50.91.41.82.22.32.11.91.51.10.70.40.3

Weather Map and Satellite Images
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wmap_P
GOES 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.
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Wind Forecast for (12,3,4,5)
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Ground Weather Radar Station Molokai, HI
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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 numerious 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.