Friday, March22, 2019 L-36.com


Marine Weather and Tides
Urban Honolulu, 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 6:32AMSunset 6:44PM Friday March 22, 2019 2:13 PM HST (00:13 UTC) Moonrise 8:51PMMoonset 8:04AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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- 941 Am Hst Fri Mar 22 2019
Rest of today..East winds 15 knots. Wind waves 6 feet. North swell 8 feet. Isolated showers.
Tonight..East winds 20 knots. Wind waves 6 feet. North swell 9 feet. Isolated showers.
Saturday..Northeast winds 20 knots. Wind waves 7 feet. North swell 7 feet. Isolated showers.
Saturday night..Northeast winds 20 knots. Wind waves 8 feet. North swell 6 feet. Isolated showers.
Sunday..East winds 20 knots. Wind waves 8 feet. North swell 6 feet. Isolated showers through the day.
Sunday night..East winds 20 knots. Wind waves 8 feet. North swell 6 feet. Isolated showers in the evening, then scattered showers after midnight.
Monday..Northeast winds 15 knots. Wind waves 7 to 8 feet. North swell 5 to 6 feet. Isolated showers.
Tuesday..East winds 15 knots. Wind waves 4 to 6 feet. North swell 4 to 5 feet. Isolated showers.
PHZ100 941 Am Hst Fri Mar 22 2019
Synopsis for hawaiian coastal waters.. High pressure building north of the area will bring fresh to locally strong trade winds through early next week. Trade winds will begin to ease on Monday and Tuesday as high pressure to the north weakens and drifts southeast.


7 Day Forecast for Marine Location Near Urban Honolulu, HI
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location: 21.29, -157.88     debug


Area Discussion for -
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Fxhw60 phfo 222000
afdhfo
area forecast discussion
national weather service honolulu hi
1000 am hst Fri mar 22 2019

Synopsis
A ridge of high pressure will continue to generate breezy trade
winds through the early part of next week. The remnants of a
dissipating front may provide a boost in trade showers Monday
through Tuesday of next week.

Discussion
Very dry and stable weather prevails across the state this
morning. Only a few hit or miss passing showers are barely
producing any measurable rainfall on some windward sites and
much fewer leeward sites. This stable trade wind pattern
continues through the weekend with mid level ridging directly over
the state, and a 1027mb surface high to the north.

By late Sunday into Monday, the models are in good agreement
showing some moisture moving over the islands in the trades. This
could boost rainfall Monday and early Tuesday, but the 700 mb
ridge over us gives little ground, meaning rainfall intensity will
be limited by the stable airmass above 10 k feet. But more places
will have a chance of getting some rainfall compared to this
current pattern. The weather pattern shifts around the middle to
end of next week as a passing mid latitude trough drags a fast
moving weakening cold front across the state. A short period of
light westerly winds is possible by Thursday according the latest
model guidance. These winds are expected to shift towards the
north and northeast quickly Friday behind the dissipating fast
moving cold front.

Aviation
High pressure north of the state will keep moderate trade winds in
place through tonight, strengthening slightly through the weekend.

Vfr conditions are expected through this evening, with isolated
mountain obscurations affecting the windward slopes due to passing
clouds and light showers. Cloud cover will fill in a bit more late
tonight and airmet sierra will be possible for tempo mountain
obscurations along windward slopes of some of the islands.

Marine
High pressure north of the area will drive trade winds to the
region through early next week. A small craft advisory (sca) is
posted for the typical windier areas near maui and the big island.

The current northwest swell will bring surf near advisory levels,
and is expected to peak tonight into tomorrow, before declining
during the remainder of the weekend. Will be monitoring the buoys
and surf reports closely to see if a high surf advisory is
warranted. Its possible that seas generated from the swell will
exceed 10 ft, which would cause us to expand the SCA to
additional areas exposed to the swell.

Several reinforcing northwest and north swells should continue to
produce small to moderate surf for the first half of next week.

By the middle of next week, a moderate long-period northwest swell
will be possible.

As trade winds strengthen this weekend, rough surf along east
facing shores will gradually increase, with wind swell reaching
around the march average of 6 to 7 ft at 7 seconds late Saturday
into Monday. Only trace background southerly swell will occur.

See the latest oahu surf discussion (srdhfo) for additional
details on surf and swell.

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.

Discussion... Brenchley
aviation... Foster
marine... M ballard


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OOUH1 - 1612340 - Honolulu, HI 1 mi50 min 78°F 75°F1018.9 hPa
51211 4 mi44 min 76°F3 ft
MOKH1 - 1612480 - Mokuoloe, HI 11 mi98 min NE 12 G 14 75°F 76°F1020.3 hPa
51202 - Mokapu Point, HI (098) 14 mi44 min 75°F7 ft
51210 14 mi44 min 75°F7 ft
51212 14 mi44 min 76°F5 ft
51207 15 mi50 min 75°F8 ft
51201 - Waimea Bay, HI (106) 29 mi32 min 72°F10 ft

Wind History for Honolulu, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Daniel K Inouye International Airport, HI5 mi81 minNNE 8 G 1710.00 miPartly Cloudy84°F57°F41%1019.2 hPa
Oahu, Kalaeloa Airport, HI10 mi81 minVar 610.00 miPartly Cloudy83°F55°F40%1020.2 hPa
Kaneohe, Marine Corps Air Station, HI12 mi2.3 hrsENE 710.00 miFair78°F68°F71%1019.1 hPa
Wheeler Air Force Base / Oahu, HI15 mi78 minENE 710.00 miA Few Clouds76°F60°F58%1018.9 hPa

Wind History from HNL (wind in knots)
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Last 24hr--NE11
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NE9NE8NE8NE105E5NE11NE12NE7E11NE7NE9NE9E6E6NE11E9E14
G18
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1 day agoS10S10S9SE8S6E4NE5N5N6N5NW4NW4NW3CalmN4NE4Calm3E7E11
G19
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NE12
2 days agoE9
G15
E5E4NE9NE6CalmCalmCalmN3CalmCalmW4NW5NW3NW4NW3N3CalmCalmCalmS7SE11SW8S8

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
Fri -- 04:01 AM HST     1.53 feet High Tide
Fri -- 06:32 AM HST     Sunrise
Fri -- 08:02 AM HST     Moonset
Fri -- 10:31 AM HST     -0.21 feet Low Tide
Fri -- 04:45 PM HST     1.64 feet High Tide
Fri -- 06:42 PM HST     Sunset
Fri -- 08:50 PM HST     Moonrise
Fri -- 11:11 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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0.30.71.11.41.51.41.20.80.40-0.2-0.200.40.91.31.61.61.51.20.80.50.20.1

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 (20,4,5,8)
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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.