Sunday, March24, 2019 L-36.com


Marine Weather and Tides
Kailua, 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 6:30AMSunset 6:44PM Saturday March 23, 2019 10:40 PM HST (08:40 UTC) Moonrise 9:51PMMoonset 8:46AM Illumination 88% Phase: Waning Gibbous; Moon at 18 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- 900 Pm Hst Sat Mar 23 2019
.small craft advisory in effect through early Sunday morning...
Rest of tonight..Northeast winds 20 knots. Wind waves 6 feet. North swell 6 feet. Scattered showers early in the evening. Isolated showers after midnight.
Sunday..East winds 20 knots. Wind waves 6 feet. North swell 7 feet. Isolated showers.
Sunday night..East winds 20 knots. Wind waves 6 feet. North swell 6 feet. Isolated showers.
Monday..Northeast winds 15 knots. Wind waves 6 feet. North swell 5 feet. Scattered showers.
Monday night..Northeast winds 20 knots. Wind waves 5 feet. North swell 5 feet. Scattered showers.
Tuesday..Northeast winds 15 knots. Wind waves 5 feet. North swell 5 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Tuesday night..East winds 15 knots. Wind waves 5 feet. North swell 4 feet. Isolated showers through the night.
Wednesday..Winds variable less than 10 knots in the morning becoming southwest 10 knots, then veering west in the evening becoming variable less than 10 knots. Wind waves 4 feet. Northwest swell 4 to 6 feet. Isolated showers.
Thursday..North winds 10 knots. Wind waves 4 to 5 feet. Northwest swell 6 to 7 feet. Scattered showers.
PHZ100 900 Pm Hst Sat Mar 23 2019
Synopsis for hawaiian coastal waters.. High pressure will build north of the state through Sunday, then shift east and weaken Monday through Tuesday as a front approaches from the northwest. The front will pass through the islands on Thursday.


7 Day Forecast for Marine Location Near Kailua, HI
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location: 21.42, -157.7     debug


Area Discussion for -
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Fxhw60 phfo 240632
afdhfo
area forecast discussion
national weather service honolulu hi
830 pm hst Sat mar 23 2019

Synopsis
Moderate to locally breezy trade winds will continue through Monday
as a surface high pressure stays north of the islands. Modest
windward rainfall will prevail through the rest of the weekend,
followed by an increase in precipitation on Monday. Trade winds
steadily will drop on Tuesday and Wednesday, as a front from the
northwest will affect portions of the state on Thursday.

Discussion
Locally breezy trade wind weather continues across the state this
evening, as a high pressure stays far north of the area, providing
the winds. Moisture carried by the winds will reach the islands at
times, bringing showers to mainly windward areas. There are also
high clouds streaming over the state, keeping skies a little more
cloudy.

Little change in the winds is expected through the rest of the
weekend into Monday as the surface high pretty much remains far
north of the islands. Low clouds embedded in the trade winds will
reach the area at times, with showers focusing along windward areas.

The atmosphere will remain somewhat stable and with the locally
breezy trade winds prevailing, expect rainfall totals to be limited.

An increase in shower activity is expected Monday as an upper level
trough is forecast to approach the islands from the west.

Furthermore, an area of moisture currently north through northeast
of kauai will sag southwest, spreading across the area. Rainfall
will still be focused over the windward slopes, though some showers
may reach the lee areas of the smaller islands.

Trade winds will steadily decline on Tuesday and will be disrupted
on Wednesday as a front approaches the area from the northwest. As
the front advances closer to the area , it will push a surface ridge
to the island vicinity, resulting in winds weakening significantly
on Wednesday. Expect a land and sea breeze weather regime to take
over, with afternoon clouds and showers developing over interior
sections. Although not much increase in low level moisture is
expected, an approaching mid to upper level trough will create some
instability. Hence, briefly heavy showers are possible on Wednesday,
specially during the afternoon and evening hours.

Looks like this pending front will reach the state on Thursday, with
shower bands associated with the front affecting the northern
islands. Forecast models still differ upon how far south this front
will advance, with the old ECMWF having the frontal band stalling
over the northern islands while the latest GFS has it reaching the
big island late Thursday. Regardless, do expect a return of the
north to northeasterly winds to much of the islands by late
Thursday, while kauai and oahu will see much of the wet weather
associated with this system. Both models do hint lingering moisture
from the dissipated front will continue to affect the area by the
next weekend.

Aviation
A high pressure center far north of the hawaiian islands will keep
moderate trade winds in the forecast for the next few days. Showers
moving along with the trade winds will bring periods of showers with
some MVFR cloud ceilings over the windward mountain slopes of each
island.

Low cloud ceilings associated with a remnant frontal band are
drifting across the island of kauai this evening and airmet sierra
remains in effect for tempo mountain obscuration through 10z
tonight. Low cloud ceilings over kauai will decrease after 10z with
the airmet sierra likely dropping before sunrise on Sunday morning.

Marine
High pressure north of the state will keep a moderate to strong
trade wind flow in place through Monday night. The trades will ease
Tuesday and Tuesday night as a front approaches from the northwest,
with winds becoming light and variable by Wednesday. There are some
differences with respect to the progressiveness of the front moving
through the island chain Wednesday night and Thursday and this will
have an impact on wind speeds and directions. The models then come
back in line by late in the week and into next weekend, showing
moderate trade winds redeveloping across the marine area.

A small craft advisory (sca) remains in effect for most waters
tonight due to winds, elevated seas or a combination of the two. The
current north-northwest swell should drop sufficiently by late
tonight that the SCA can be cancelled in most areas. Strong winds
will continue across the typically windy waters around maui and the
big island Sunday through Monday, and the SCA will likely need to be
extended for these areas later tonight.

The current north-northwest swell will continue to decline through
the rest of the weekend. A small reinforcement out of a more
northerly direction is expected Monday night through Wednesday.

Overlapping long-period northwest swells will move through during
the mid to late week time frame, with surf possibly approaching low
end advisory levels Thursday through Friday along north and west
facing shores. Otherwise, surf should remain below advisory
thresholds through the next week.

Surf along east facing shores will rise tonight through Monday due
to the building trades. A downward trend is expected Monday night
through Wednesday as the trades weaken.

Surf along south facing shores will remain small most days with
mainly background long period southerly pulses and short-period
southeast energy expected. There could be a bit of a bump Wednesday
through Friday as a small long period south swell arrives from the
southern hemisphere.

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.

Small craft advisory until 6 am hst Sunday for kauai northwest
waters-kauai windward waters-kauai leeward waters-kauai channel-
oahu windward waters-kaiwi channel-maui county windward waters-
big island windward waters.

Discussion... Hui
aviation... Bohlin
marine... Jelsema


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51202 - Mokapu Point, HI (098) 1 mi40 min 75°F8 ft
51207 5 mi46 min 75°F7 ft
51210 5 mi40 min 75°F6 ft
MOKH1 - 1612480 - Mokuoloe, HI 5 mi64 min 74°F 77°F1020.7 hPa
OOUH1 - 1612340 - Honolulu, HI 12 mi58 min NNE 2.9 G 6 74°F 75°F1020 hPa
51211 16 mi70 min 75°F3 ft
51212 25 mi40 min 76°F4 ft
51201 - Waimea Bay, HI (106) 28 mi58 min 72°F8 ft

Wind History for Mokuoloe, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kaneohe, Marine Corps Air Station, HI4 mi61 minNE 10 G 1410.00 miMostly Cloudy73°F0°F%1020 hPa
Daniel K Inouye International Airport, HI13 mi47 minNE 6 G 1810.00 miPartly Cloudy75°F63°F66%1020 hPa
Wheeler Air Force Base / Oahu, HI18 mi2.7 hrsN 410.00 miMostly Cloudy69°F60°F75%0 hPa
Oahu, Kalaeloa Airport, HI21 mi47 minNE 410.00 miFair71°F62°F73%1021 hPa

Wind History from HNG (wind in knots)
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Last 24hrNE11E8NE9NE6NE11NE7NE9NE9NE8E8NE9NE8NE10NE8NE12NE11NE11NE10NE10
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2 days agoCalmCalmCalmW4CalmSW4----------NE8NE10NE8NE8
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Tide / Current Tables for Waimanalo, Oahu Island, Hawaii
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Waimanalo
Click for Map
Sun -- 05:03 AM HST     0.86 feet High Tide
Sun -- 06:31 AM HST     Sunrise
Sun -- 09:30 AM HST     Moonset
Sun -- 11:11 AM HST     -0.06 feet Low Tide
Sun -- 06:13 PM HST     1.42 feet High Tide
Sun -- 06:43 PM HST     Sunset
Sun -- 10:49 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.30.50.60.80.90.80.70.40.20-0.1-00.20.40.81.11.31.41.41.210.70.5

Tide / Current Tables for Hanauma Bay, Oahu Island, Hawaii
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Hanauma Bay
Click for Map
Sun -- 12:15 AM HST     0.25 feet Low Tide
Sun -- 05:19 AM HST     1.01 feet High Tide
Sun -- 06:31 AM HST     Sunrise
Sun -- 09:30 AM HST     Moonset
Sun -- 11:35 AM HST     -0.07 feet Low Tide
Sun -- 06:29 PM HST     1.67 feet High Tide
Sun -- 06:43 PM HST     Sunset
Sun -- 10:48 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.30.50.70.9110.80.60.30.1-0-0.10.10.40.81.21.51.61.61.51.310.7

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 (4,6,7,8)
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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.