Monday, October15, 2018 L-36.com


Marine Weather and Tides
Heeia, 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 6:26AMSunset 6:07PM Monday October 15, 2018 12:30 AM HST (10:30 UTC) Moonrise 12:27PMMoonset 11:39PM Illumination 33% Phase: Waxing Crescent; Moon at 6 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- 916 Pm Hst Sun Oct 14 2018
Rest of tonight..Northeast winds 15 knots. Wind waves 3 feet. Mixed swell northwest 4 feet and south 3 feet. Scattered showers.
Monday..Northeast winds 15 knots. Wind waves 4 feet. North swell 5 feet. Scattered showers in the morning.
Monday night..Northeast winds 20 knots. Wind waves 4 feet. North swell 4 feet. Isolated showers after midnight.
Tuesday..Northeast winds 20 knots. Wind waves 4 feet. North swell 6 feet. Isolated showers in the morning.
Tuesday night..Northeast winds 15 knots. Wind waves 4 feet. North swell 8 feet. Isolated showers.
Wednesday..Northeast winds 15 knots. Wind waves 4 feet. North swell 8 feet. Isolated showers through the day.
Wednesday night..Northeast winds 15 knots. Wind waves 3 feet. North swell 7 feet. Isolated showers.
Thursday..Northeast winds 15 knots. Wind waves 3 feet. North swell 5 to 6 feet. Isolated showers.
Friday..Northeast winds 15 knots. Wind waves 3 feet. Mixed swell north 4 to 6 feet and south 3 feet. Isolated showers.
PHZ100 916 Pm Hst Sun Oct 14 2018
Synopsis for hawaiian coastal waters.. A weak front currently near oahu will stall and dissipate over maui county on Monday. Meanwhile, a weak trough near the big island will drift eastward. High pressure will build north of the islands in the wake of the front, leading to moderate to locally fresh northeasterly winds through midweek. The ridge will weaken on Thursday and Friday.


7 Day Forecast for Marine Location Near Heeia, HI
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location: 21.44, -157.81     debug


Area Discussion for -
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Fxhw60 phfo 150702
afdhfo
area forecast discussion
national weather service honolulu hi
902 pm hst Sun oct 14 2018

Synopsis
A cloud band over kauai will move southeast across oahu and maui
county tonight through Monday, then stall and dissipate over the
big island Tuesday. A high will build north of the area tonight
and persist through the week.

Discussion
Satellite loops show a 90 mile wide band of showery low clouds running
east northeast to west southwest over kauai. This band is associated
with the remnant of a front. Clouds associated with this band cover
kauai and niihau and the coastal waters around kauai county. Clouds
are scattered over most areas from oahu to the leeward side of the
big island of hawaii with patchy broken low clouds over windward oahu.

A trough extends northeast from over the big island. Broken to overcast
low clouds associated with the trough cover the coast and lower slopes
of the big island from upolu point to south point and the coastal waters
east of the big island.

A surface ridge will build eastward north of the islands and moderate
northeast trade winds will spread over the islands. The cloud band
over kauai will shift southeast slowly and weaken tomorrow, then
stall and dissipate near the big island. Clouds and showers in the
band will spread over oahu and maui tonight and tomorrow and reach
the big island Monday night. The cloud band is rather shallow, so
the showers in the band will affect mainly windward areas of the
smaller islands, with only isolated showers spreading to leeward
areas. A trough aloft is making the atmosphere less stable over
the big island with deeper moisture there. Showers will be more
active on the big island through tomorrow with some showers building
over interior and leeward slopes tomorrow afternoon. As the trough
aloft lifts north and weakens on Tuesday, the atmosphere over the
big island will become more stable.

From Wednesday through next weekend a surface ridge will persist
north of the main hawaiian islands and maintain moderate to
locally fresh northeast to east trade winds over the area. Ridging
aloft will keep the atmosphere rather 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 diffuse frontal band continues to sag down across the central
islands this evening. The northerly low-level flow behind this
feature continues to produce overcast low clouds and frequent
showers along north facing sections of kauai. As a result, airmet
sierra remains in effect for mountain obscuration on that island.

This airmet may persist through daybreak Monday morning.

Elsewhere, broken to overcast low clouds and scattered showers
associated with this band will likely produce brief periods of
MVFR conditions over north and northeast facing slopes of most of
the smaller islands from oahu to maui through early Monday
morning. Otherwise, expect mainlyVFR conditions to prevail over
the smaller islands.

Abundant moisture and a weak surface trough in the vicinity of
the eastern end of the state continue to generate low clouds and
showers over the southern and southeastern big island early this
evening. Airmet sierra also remains in effect for mountain
obscuration on that island from near hilo to south point. The low
clouds and showers associated with the frontal band may begin to
filter into the extreme northern end of the big island Monday
morning. This may cause brief periods of MVFR to develop.

Airmet tango for upper-level turbulence remains in effect over
hawaii between fl260 and fl420. This airmet will likely remain in
effect through early Monday morning.

Looking ahead to daytime Monday, the front will likely stall near
maui county before dawn Monday. The low-level flow is expected to
become northeasterly during the day on Monday. Drier air moving
into kauai and oahu may limit showers there after mid-morning
Monday. However, low clouds and showers will likely continue to
move into northeastern sections of the central hawaiian islands,
which may result in brief periods of MVFR conditions through late
Monday afternoon. The surface trough near the big island is
expected to weaken by Monday, so conditions will likely improve
over the southeastern big island on Monday.

Marine
A weak front will stall across maui county late tonight and
gradually dissipate on Monday, while a trough near the big island
falls apart. A surface ridge building north of the state will
drive gentle to moderate north to northeast winds tonight, with
moderate to locally fresh northeasterly trade winds settling over
the island chain on Monday. Winds will peak just below small craft
advisory strength across maui county waters Monday night and
Tuesday, followed by a slight decrease on Wednesday and Thursday.

An active surf pattern from the north and south is due this week.

A pulse of shorter period north-northwest swell will push north
shore surf to near october average tonight and early Monday. A
larger north-northwest swell will arrive on Tuesday. Resulting
surf will likely be well above the high surf advisory level for
north facing shores on Tuesday and Wednesday, and combined seas
over exposed waters may meet the 10 ft threshold for a small
craft advisory a that time. This swell will gradually lower
Thursday and Friday and may be reinforced to around october
average for next weekend.

The run of late season south-southwest swells will continue
through the week. Another pulse is expected to fill in tonight
and hold through Monday, which will support moderate surf slightly
above the october average. A gradual downward trend from this
source is anticipated midweek. A larger south-southwest swell is
expected to fill in on Friday and produce high surf advisory level
surf through next weekend.

Surf along east facing shores will remain below october average
through the week, though a slight increase is due as winds pick up
during the next couple of days.

Hfo watches warnings advisories
None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MOKH1 - 1612480 - Mokuoloe, HI 1 mi54 min S 4.1 G 5.1 76°F 82°F1013.3 hPa
51207 4 mi36 min 81°F4 ft
51210 4 mi30 min 81°F4 ft
51202 - Mokapu Point, HI (098) 7 mi30 min 80°F4 ft
OOUH1 - 1612340 - Honolulu, HI 10 mi30 min N 4.1 G 6 77°F 81°F1012.8 hPa (+0.0)
51211 13 mi60 min 81°F2 ft
51212 20 mi30 min 82°F4 ft
51201 - Waimea Bay, HI (106) 23 mi18 min 79°F5 ft

Wind History for Mokuoloe, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kaneohe, Marine Corps Air Station, HI2 mi42 minN 010.00 miMostly Cloudy76°F73°F91%1012.5 hPa
Daniel K Inouye International Airport, HI9 mi37 minN 410.00 miA Few Clouds76°F68°F77%1013 hPa
Wheeler Air Force Base / Oahu, HI12 mi94 minNNW 610.00 miMostly Cloudy72°F69°F91%0 hPa
Oahu, Kalaeloa Airport, HI16 mi37 minNE 410.00 miFair75°F66°F76%1014 hPa

Wind History from HNG (wind in knots)
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Last 24hrCalmCalmCalmS3S3SW3CalmS4N3N6N7N10N10N11N10N10N12N13NE8NE11NE10NE6NE8Calm
1 day agoCalmCalmCalmCalmCalmCalmS3SW3CalmN7N9N5N6N7N5N6N7N8N6N5W4W3W4Calm
2 days ago3W3CalmCalmCalmS3S3SW3SW3343SE7E5E5SE4NW3CalmW5SE3SE5SE3CalmS3

Tide / Current Tables for Waikane, Kaneohe Bay, Oahu Island, Hawaii
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Waikane
Click for Map
Mon -- 06:27 AM HST     Sunrise
Mon -- 07:25 AM HST     2.16 feet High Tide
Mon -- 12:27 PM HST     Moonrise
Mon -- 04:07 PM HST     0.72 feet Low Tide
Mon -- 06:06 PM HST     Sunset
Mon -- 08:42 PM HST     1.07 feet High Tide
Mon -- 11:39 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.811.21.51.822.12.121.81.61.31.10.90.80.70.80.911.11.111

Tide / Current Tables for Moku o Loe, Kaneohe Bay Oahu Island, Hawaii
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Moku o Loe
Click for Map
Mon -- 06:27 AM HST     Sunrise
Mon -- 07:47 AM HST     1.96 feet High Tide
Mon -- 12:27 PM HST     Moonrise
Mon -- 04:11 PM HST     0.72 feet Low Tide
Mon -- 06:07 PM HST     Sunset
Mon -- 09:04 PM HST     0.87 feet High Tide
Mon -- 11:39 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.80.91.11.41.61.81.921.91.71.51.31.10.90.80.70.70.80.80.90.90.90.9

Weather Map and Satellite Images
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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 (6,6,7,8)
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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.