Tuesday, October16, 2018 L-36.com


Marine Weather and Tides
Haleiwa, 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 6:27AMSunset 6:07PM Tuesday October 16, 2018 8:46 AM HST (18:46 UTC) Moonrise 1:17PMMoonset 12:00AM Illumination 47% Phase: First Quarter Moon; Moon at 7 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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PHZ114 Oahu Windward Waters- 329 Am Hst Tue Oct 16 2018
.small craft advisory in effect from late this morning through Wednesday afternoon...
Today..Northeast winds 15 knots. Wind waves 5 feet. North swell 6 feet increasing to 8 feet in the afternoon. SWell south 3 feet.
Tonight..East winds 15 knots. Wind waves 5 feet. North swell 9 feet and south 3 feet.
Wednesday..East winds 15 knots. Wind waves 4 feet. North swell 9 feet.
Wednesday night..Northeast winds 15 knots. Wind waves 3 feet. North swell 7 feet. Isolated showers after midnight.
Thursday..Northeast winds 15 knots. Wind waves 3 feet. North swell 6 feet. Isolated showers in the morning.
Thursday night..East winds 10 knots. Wind waves 3 feet. Northwest swell 5 feet. Scattered showers.
Friday..East winds 10 knots. Wind waves 3 feet. Mixed swell north 5 feet and south 3 to 4 feet. Scattered showers.
Saturday..Northeast winds 15 knots. Wind waves 3 feet. Mixed swell north 5 feet and south 4 feet. Scattered showers.
PHZ100 329 Am Hst Tue Oct 16 2018
Synopsis for hawaiian coastal waters.. A ridge of high pressure north of the islands will strengthen through midweek. The ridge will weaken Thursday through Friday as a front passes to the north. High pressure will build northwest of the islands on Saturday.


7 Day Forecast for Marine Location Near Haleiwa, HI
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location: 21.6, -158.12     debug


Area Discussion for -
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Fxhw60 phfo 161330
afdhfo
area forecast discussion
national weather service honolulu hi
330 am hst Tue oct 16 2018

Synopsis
Remnants of a front will linger near the big island for the next
few days. A surface ridge will remain north of the area through
early next week.

Discussion
Surface analyses show a 1021 mb surface high about 900 miles north
of kauai near 36n 160w. The high is forecast to move east around
25 mph. A ridge extending southwest from the high will persist
through the week and maintain northeast to east trade winds over
the main hawaiian islands.

Showery low clouds, remnants of a frontal band, extend east
northeast from over maui county and the big island of hawaii. The
trade winds are pushing showery low clouds, remnants of a frontal
band, over windward maui and the big island. Clouds are more
stable upstream of the islands from molokai to kauai with only
isolated showers showing on radar.

Water vapor loops show a northeast to southwest trough aloft just
northwest of kauai. Southwest winds aloft associated with the
trough are carrying broken to overcast high clouds over the big
island. This cloud area is slowly shifting southeast. The trough
aloft is also making the atmosphere less stable over the big
island with deeper moisture there. Showers will remain more active
on the big island today with some showers building over interior
and leeward slopes during the afternoon. As the trough aloft lifts
north and weakens over the next few days, the atmosphere over the
big island will become more stable.

From Wednesday through next weekend the surface ridge will persist
north of the main hawaiian islands and maintain moderate to locally
strong northeast to east trade winds over the area. Ridging aloft
will keep the atmosphere fairly dry and stable, so showers will
be focused over mainly windward areas with no heavy rainfall expected.

Leeward areas will remain mostly dry.

Aviation
A band of low clouds and showers associated with the remnants of
a front is causing widespread MVFR conditions over most of the
northeastern and eastern big island. As a result, airmet sierra
remains in effect for mountain obscuration along the windward
facing slopes of the big island. This airmet will likely be needed
through mid-day. Airmet sierra also remains posted for mountain
obscuration over windward sections of maui, but we are expecting
conditions to gradually improve there later this morning.

On kauai, oahu and molokai isolated MVFR conditions are limited
to windward slopes.VFR conditions prevail over most leeward
sections of the islands early this morning.

Airmet tango for moderate upper-level turbulence remains in
effect over the island chain between fl280 and fl400.

Marine
A large nnw swell will build down the island chain today, peak
this evening through Wednesday, then gradually ease Thursday
through Friday. A combination of the large swell and increasing
wind waves generated locally by fresh to strong trades will
translate to advisory-level seas over most waters from this
afternoon through Wednesday. A small craft advisory has been
issued over these areas, which only excludes the leeward maui
county and leeward and southeast big island waters.

Surf along exposed north and west facing shores will quickly rise
through the day today, likely exceeding the high surf advisory
thresholds by noon for kauai and oahu, then maui county by this
evening. Surf may reach advisory levels along N facing shores of
the big island tonight and Wednesday, which would require the
current high surf advisory to be expanded later. If the swell
surges above the predicted peak, marginal warning-level surf will
become a possibility tonight into Wednesday, especially for kauai
and oahu. After this swell diminishes later in the week, a smaller
nnw swell over the weekend is expected to produce surf heights
below advisory levels.

Surf will remain elevated, but below advisory levels, along s
facing shores today, then fade through midweek. A potent S swell
arriving Friday is expected to peak Saturday into Sunday, bringing
high surf that may support surf near the warning-level of 15 feet
along S facing shores at its peak. This source is already filling
in at the samoa buoy, which will help refine the forecast locally
over the coming days. See the latest collaborative surf
discussion (srdhfo) for more details.

A weak high pressure cell far NW of the islands will move quickly
e, supporting moderate to locally fresh ene trade winds through
Wednesday. The high is expected to weaken NE of the islands
Wednesday night and Thursday as a front passes to the n, leading
to lighter trade winds. Fresh to strong NE winds are expected over
the weekend, supported by a new high pressure cell centered far
nw of the islands.

Hfo watches warnings advisories
Small craft advisory from 9 am today to 6 pm Wednesday for all
coastal waters except maui leeward waters, big island waters and
big island southeast waters.

High surf advisory from 9 am today to 6 pm Wednesday for north
and west facing shores of niihau, kauai, oahu and molokai and
north facing shores of maui.

Discussion... Donaldson
aviation... Houston
marine... Gibbs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51201 - Waimea Bay, HI (106) 5 mi34 min 78°F6 ft
51212 19 mi46 min 82°F3 ft
MOKH1 - 1612480 - Mokuoloe, HI 21 mi70 min E 8.9 G 13 78°F 80°F1015.2 hPa
51210 21 mi46 min 81°F5 ft
51207 21 mi22 min 80°F6 ft
51211 23 mi46 min 81°F3 ft
OOUH1 - 1612340 - Honolulu, HI 25 mi34 min ENE 5.1 G 8.9 78°F 81°F1015.3 hPa
51202 - Mokapu Point, HI (098) 27 mi46 min 80°F6 ft

Wind History for Mokuoloe, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wheeler Air Force Base / Oahu, HI10 mi50 minN 010.00 miMostly Cloudy73°F67°F83%1015.1 hPa
Daniel K Inouye International Airport, HI20 mi53 minVar 410.00 miMostly Cloudy78°F66°F69%1015.2 hPa
Oahu, Kalaeloa Airport, HI20 mi53 minNE 710.00 miOvercast77°F66°F69%1016.3 hPa
Kaneohe, Marine Corps Air Station, HI21 mi1.8 hrsNE 910.00 miMostly Cloudy78°F69°F74%1013.5 hPa

Wind History from HHI (wind in knots)
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Last 24hrNW6N8N7NE8NE8NE7CalmNE9N6NW7NW5W4NW5NW4W6W4W3NW4NW5W3NW5NW3NW3Calm
1 day agoNW6NW9N10
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N10N9N6NW7NW7NW5NW6NW6NE7NW3NW3NW3CalmN3NW4NW5NW5
2 days ago------------------NW8NW4N5NW5NW3CalmNW4NW3N4CalmN3N4NW4NW5N5

Tide / Current Tables for Haleiwa, Waialua Bay, Oahu Island, Hawaii
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Haleiwa
Click for Map
Tue -- 12:09 AM HST     0.53 feet Low Tide
Tue -- 06:28 AM HST     Sunrise
Tue -- 08:02 AM HST     First Quarter
Tue -- 09:16 AM HST     1.46 feet High Tide
Tue -- 01:15 PM HST     Moonrise
Tue -- 04:11 PM HST     0.36 feet Low Tide
Tue -- 06:06 PM HST     Sunset
Tue -- 10:51 PM HST     0.70 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.50.60.70.811.11.31.41.51.41.31.10.80.60.40.40.40.40.50.60.60.70.7

Tide / Current Tables for Laie Bay, Oahu Island, Hawaii
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Laie Bay
Click for Map
Tue -- 12:28 AM HST     0.76 feet Low Tide
Tue -- 06:27 AM HST     Sunrise
Tue -- 08:02 AM HST     First Quarter
Tue -- 08:33 AM HST     1.92 feet High Tide
Tue -- 01:15 PM HST     Moonrise
Tue -- 04:30 PM HST     0.55 feet Low Tide
Tue -- 06:05 PM HST     Sunset
Tue -- 10:08 PM HST     0.97 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.80.811.21.41.61.81.91.91.81.61.41.10.80.70.60.60.60.70.90.911

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 (14,3,4,5)
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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.