Wednesday, March20, 2019 L-36.com


Marine Weather and Tides
Kaneohe Station, HI

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:33AMSunset 6:43PM Wednesday March 20, 2019 11:12 AM HST (21:12 UTC) Moonrise 6:48PMMoonset 6:35AM 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- 952 Am Hst Wed Mar 20 2019
Rest of today..Northeast winds 10 knots. Wind waves 3 feet. Northwest swell 6 feet and north 4 feet.
Tonight..Northeast winds 10 knots. Wind waves 3 feet. Northwest swell 7 feet increasing to 9 feet after midnight. SWell north 3 to 4 feet. Isolated showers.
Thursday..Northeast winds 15 knots. Wind waves 4 feet. Northwest swell 8 feet. Isolated showers.
Thursday night..Northeast winds 20 knots. Wind waves 5 feet. Northwest swell 8 feet. Isolated showers.
Friday..Northeast winds 20 knots. Wind waves 6 feet. North swell 9 feet. Isolated showers in the afternoon.
Friday night..East winds 20 knots. Wind waves 6 feet. North swell 9 feet. Isolated showers.
Saturday..East winds 20 knots. Wind waves 7 to 8 feet. North swell 7 to 9 feet. Scattered showers.
Sunday..East winds 20 knots. Wind waves 8 to 9 feet. North swell 6 to 7 feet. Scattered showers.
PHZ100 952 Am Hst Wed Mar 20 2019
Synopsis for hawaiian coastal waters.. Ridge of high pressure will remain near the waters through tonight. High pressure will build north of the area Thursday through Friday, then strengthen Saturday night through Sunday.


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 201940
afdhfo
area forecast discussion
national weather service honolulu hi
940 am hst Wed mar 20 2019

Synopsis
Stable and dry conditions will persist across the islands through
tonight, due to high pressure to the northeast. Trade winds will
increase Thursday and Friday as a cold front approaches from the
northwest. This front will be close enough to usher in increased
clouds and showers across the area Saturday and Sunday.

Discussion
No change in the forecast philosophy this morning. Earlier updates
were due to the issuance of a high surf advisory for the incoming
swell.

A high pressure system to the northeast has an associated ridge
north of kauai this morning, which is helping to keep lighter
winds around the region. The overnight soundings show a little
more moisture reaching the islands than 24 hours ago, and we are
seeing a few more clouds and showers today compared with
yesterday. Rainfall totals continue to be light under the stable
airmass.

Overnight analysis had the cold front that will be impacting our
weather about 700 miles northwest of kauai. The models are in good
agreement with the front approaching the islands through the end
of the week. Thursday and Friday should see trade winds on the
increase as the pressure gradient increases over the islands.

The models continue to show the front never reaching the islands,
but impacts from the front will be felt this weekend. Expect
clouds and showers, with breezy to locally windy trade winds. This
will focus most of the clouds and showers over windward areas, but
there will likely be clouds and at least some showers that reach
leeward areas.

A wet trade wind pattern will then persist through the start of
the new work week thanks to high pressure moving in from the
northwest.

Aviation
The high pressure ridge north of the islands will weaken through
24 hours. Light trade wind flow will continue to steer a dense
layer of stratocumulus towards windward slopes and coasts.

Meanwhile, sea breezes will drive weak convective development
over island interiors this afternoon and early evening. Partial
clearing expected along leeward slopes and coasts after sunset.

Isolated MVFR conditions possible in passing showers, otherwise
vfr conditions will prevail through 24 hours and beyond. No
airmets are currently in effect or anticipated.

Marine
A brief period with light to moderate trades will continue into
tonight as the ridge remains near the area. Land and sea breeze
conditions will continue through this time near the coasts. A
return of fresh to strong trades is expected Thursday through the
weekend as high pressure builds north of the area. A combination
of overlapping north to northwest swells and wind waves rising
from the strengthening trades will lead to small craft advisory
(sca) conditions over exposed waters late Thursday through the
weekend. Seas may reach advisory levels over exposed waters
by tonight due to a large northwest swell expected to build down
the island chain.

Surf along north and west facing shores will rise through the day
today as a new long-period northwest swell fills in today and
peaks overnight tonight. Latest buoy observations northwest of
the state is reporting 8 to 9 feet of swell with 16 second
periods this morning. Also the pacioos buoy at hanalei is already
reporting 7 feet at 18 seconds. With the rise in surf expected
through the day today, a high surf advisory (hsa) has been posted
for north and west facing shores of niihau, kauai, oahu, molokai,
and north facing shores of maui through early Friday morning. With
another reinforcing swell expected on Friday, the hsa may need to
be extended through Friday and possibly through the weekend as
another reinforcing swell moves in on Sunday. A moderate
northerly swell will be possible next Monday night through Tuesday
that could bring the surf back to around advisory levels for
north facing shores.

Surf along east facing shores will remain small through Thursday,
then rise Friday through the weekend as fresh to strong trades
return.

Surf along south facing shores will remain small each day with
mainly background southerly pulses moving through.

Hfo watches warnings advisories
High surf advisory until 6 am hst Friday for niihau-kauai
windward-kauai leeward-waianae coast-oahu north shore-oahu
koolau-molokai-maui windward west-maui central valley-windward
haleakala.

Discussion... M ballard
aviation... Abedal
marine... Kino


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51207 1 mi49 min 75°F5 ft
51210 1 mi73 min 75°F5 ft
MOKH1 - 1612480 - Mokuoloe, HI 3 mi97 min NW 1.9 G 2.9 74°F 75°F1018.9 hPa
51202 - Mokapu Point, HI (098) 6 mi43 min 75°F5 ft
OOUH1 - 1612340 - Honolulu, HI 13 mi43 min SSW 5.1 G 8 1018.5 hPa
51211 16 mi73 min 76°F2 ft
51201 - Waimea Bay, HI (106) 23 mi31 min 72°F6 ft
51212 23 mi43 min 76°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 mi76 minNNW 310.00 miA Few Clouds74°F66°F76%1017.5 hPa
Daniel K Inouye International Airport, HI12 mi20 minS 710.00 miPartly Cloudy79°F61°F54%1018.3 hPa
Wheeler Air Force Base / Oahu, HI14 mi17 minNE 510.00 miMostly Cloudy75°F59°F57%1017.9 hPa
Oahu, Kalaeloa Airport, HI19 mi20 minSSW 810.00 miMostly Cloudy79°F57°F47%1019.4 hPa

Wind History from HNG (wind in knots)
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Last 24hr6E9E8E9E6SE86SE4W6CalmNW4NW4W4SW4W3CalmCalmCalmCalmCalmCalmW3NW3N7
1 day agoNE8
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G16
E7E10E7E9----NE8E7E9E6E5E6E8
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2 days agoN11N13N12N11NE14N12N10N9NE10NE11N10NE10NE8NE10NE10NE7E6E7E4NE13
G18
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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 -- 02:43 AM HST     1.95 feet High Tide
Wed -- 06:34 AM HST     Moonset
Wed -- 06:34 AM HST     Sunrise
Wed -- 09:29 AM HST     -0.22 feet Low Tide
Wed -- 03:13 PM HST     1.40 feet High Tide
Wed -- 03:43 PM HST     Full Moon
Wed -- 06:41 PM HST     Sunset
Wed -- 06:47 PM HST     Moonrise
Wed -- 09:19 PM HST     -0.11 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.61.91.91.81.40.90.40-0.2-0.20.10.50.91.21.41.31.10.80.40.1-0.1-0.10.2

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (17,4,5,8)
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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.