Friday, May26, 2017 L-36.com


Marine Weather and Tides
Hanamaulu, HI

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:48AMSunset 7:10PM Friday May 26, 2017 4:27 PM HST (02:27 UTC) Moonrise 7:00AMMoonset 8:35PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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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PHZ111 Kauai Windward Waters- 330 Pm Hst Fri May 26 2017
Tonight..Northeast winds 10 knots. Wind waves 2 feet or less. Mixed swell north 3 feet and south 3 feet. Scattered showers.
Saturday..East winds 10 knots. Wind waves 2 feet or less. Mixed swell north 3 feet and south 4 feet. Scattered showers.
Saturday night..East winds 10 knots. Wind waves 4 feet. Mixed swell north 3 feet and south 3 to 4 feet. Isolated showers.
Sunday..Southeast winds 10 knots. Wind waves 3 feet in the morning then 2 feet or less. Mixed swell northeast 3 feet and south 3 feet. Isolated showers.
Sunday night..Southeast winds 10 knots. Wind waves 2 feet or less. Mixed swell northeast 3 feet and south 3 feet. Isolated showers.
Monday..Southeast winds 10 knots in the morning becoming variable less than 10 knots. Wind waves 3 feet. SWell south 3 feet. Isolated showers.
Monday night..East winds 10 knots. Wind waves 3 feet. SWell south 3 feet increasing to north 3 feet after midnight. Isolated showers.
Tuesday..East winds 10 knots. Wind waves 3 to 4 feet. Northwest swell 3 to 4 feet. Scattered showers.
Wednesday..East winds 15 knots. Wind waves 5 feet. Northwest swell 3 to 4 feet. Scattered showers.
PHZ100 330 Pm Hst Fri May 26 2017
Synopsis for hawaiian coastal waters.. High pressure centered far north northwest of the state is forecast to weaken through the holiday weekend. A low pressure system will remain northeast of the local area resulting in lighter winds through the first half of next week.

7 Day Forecast for Marine Location Near Hanamaulu, HI
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location: 22, -159.33     debug


Area Discussion for -
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Fxhw60 phfo 270157
afdhfo
area forecast discussion
national weather service honolulu hi
357 pm hst Fri may 26 2017

Synopsis
High pressure northwest of the state will slowly weaken as it
shifts southward through the memorial day weekend, with light
trade winds and localized land and sea breezes prevailing across
the island chain. As a result, showers will favor windward areas
during the overnight and early morning hours, and the interior
and leeward sections of the islands during afternoons and
evenings. Typical trade wind weather is expected to return on
Tuesday and continue through the end of next week, with showers
remaining confined primarily to windward and mauka areas.

Discussion
Currently at the surface, a 1030 mb high is centered around 1400
miles northwest of kauai. Meanwhile, a weak 1015 mb low is
located around 1300 miles north-northeast of the state, with a
weakening front extending south and southwest to a location
around 175 miles north of oahu. Light northeasterly trade winds
prevail across the island chain this afternoon, with localized
sea breezes in leeward areas. Satellite imagery shows partly
to mostly cloudy skies in place, with cloud cover most prevalent
over the island interiors and leeward locales. Radar imagery
shows numerous showers over kauai and oahu, with scattered showers
over maui county and the big island. Main short term concerns
revolve around rain chances as well as the building high surf and
elevated tide levels.

Tonight through memorial day,
the weakening front to the north of the islands will slowly
dissipated through the memorial day weekend, while high pressure
to the northwest of the state weakens and sinks southward. As a
result a weak pressure pattern will keep winds light across the
island chain through the holiday weekend, with a general light
background trade wind flow, along with daytime sea breezes and
overnight land breezes developing in many areas. Meanwhile aloft,
broad upper level troughing will remain over the state through
Sunday, with the trough axis moving overhead from northwest to
southeast Saturday through early Sunday. Upper level ridging will
then build in from the west for the tail end of the memorial day
weekend.

As for sensible weather details, with the light background trade
winds and localized sea land breezes expected through the holiday
weekend, showers are expected to favor windward areas during the
overnight and early morning hours and the interior leeward
sections of the islands during afternoons and evenings. Shower
coverage is expected to remain highest over oahu and kauai early
this evening as lingering deep moisture associated with the
eastern extent of a mid-level trough remains over those areas,
with isolated to scattered showers over the other islands.

Showers are then expected to dissipate by mid evening hours in
most areas, with some isolated showers continuing to drift in on
the light trades over windward areas through the remainder of the
night. On Saturday, the coverage of afternoon evening showers
will likely be a bit higher across the central and eastern islands
compared to what was seen today, with similar coverage across
oahu and kauai. On Sunday the highest afternoon evening shower
coverage will shift to the big island as mid-level ridging begins
to nose in from the west. On memorial day, shower coverage should
remain highest over the big island and maui, as the convergence
will be maximized here as the trades begin to return by late in
the day.

Monday night through next Friday,
high pressure northeast of the state will build westward to the
north of the islands through late next week. This will bring
trade winds back to the island chain beginning Monday night, with
speeds reaching moderate levels Tuesday through the end of next
week. Aloft, upper level ridging will remain over the islands
through much of next week, and this will keep the airmass fairly
stable. As a result, showers will be confined primarily to
windward and mauka areas through the period, with rainfall
amounts remaining light.

Aviation
Light trade wind flow will persist through 48 hours. Weak sea
breezes along leeward coasts in the afternoon and early evening
hours will encourage low topped shower development over island
interiors. Patchy showers will persist overnight across windward
slopes and coasts but partial clearing is expected along leeward
coasts after sunset.

Vfr conditions will prevail all areas. No airmets in effect or
anticipated at this time.

Marine
Surf along south facing shores has been steadily rising today,
will peak tonight through Saturday, then slowly ease into next
week. Advisory level surf will hold through Saturday night and
possibly Sunday morning, before very slowly lowering through the
first half of next week. A high surf advisory remains in effect
for exposed south facing shores through early Sunday. Please see
the coastal hazard message (cfwhfo) on our website for more
information about the surf. A small, long-period south swell
(170-190 deg) is expected to arrive late next week. Otherwise, no
significant sources out of the south are expected Wednesday
through the following weekend.

In addition to the building surf along south facing shores,
coastal flooding impacts associated with record-level king tides
will continue each day along all shores through the memorial day
weekend, especially for maui county and oahu. Beaches and
shorelines, boat ramps and docks, and vulnerable low-lying roads
and structures will be impacted during these late afternoon and
early evening high tides. Please see the special weather statement
(spshfo) product on our website for more information about the
potential impacts from the high tides and south swell.

Trade winds will continue to weaken over the upcoming holiday
weekend as the ridge weakens in response to an area of low
pressure well northeast of the state. Land sea breeze conditions
are expected each day over the weekend and early next week, which
will allow the seas to trend down locally.

Surf along east facing shores will trend down through the weekend
as the trades relax. A small north-northeast swell, however, will
support small surf continuing at the exposed spots each day
through Monday.

Models remain persistent in showing a small to moderate northwest
(330 deg) swell filling in Monday night through midweek due to a
low pressure system tracking north of the state Sunday through
Monday. Otherwise, small surf is expected to persist each day,
mainly at the locations exposed to north-northeast swell.

Hfo watches warnings advisories
High surf advisory until 6 am hst Sunday for niihau-kauai
windward-kauai leeward-oahu south shore-waianae coast-molokai
leeward-lanai makai-kahoolawe-maui leeward west-windward
haleakala-leeward haleakala-kona-south big island-big island
north and east.

Discussion... Jelsema
aviation... Bedal
marine... Ts


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWWH1 - 1611400 - Nawiliwili, HI 3 mi39 min W 9.9 G 11 71°F 1015.5 hPa
51208 24 mi35 min 80°F5 ft
51201 - Waimea Bay, HI (106) 68 mi25 min 78°F4 ft

Wind History for Nawiliwili, HI
(wind in knots)    EDIT      (on/off)   Help
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NE9
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N4
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N8
G11
NE11
G14
N8
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NE8
G12
N7
G18
NE12
G16
NE13
G17
NE11
G15
NE9
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G20
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G22
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G17
E11
G14
NE8
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NE13
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G13
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NE6
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G13
NE5
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G15
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NE13
NE13
G16
NE11
G14
NE6
NE10
G14

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lihue, Lihue Airport, HI2 mi34 minW 99.00 miLight Rain72°F66°F84%1015.5 hPa
Kekaha, Pacific Missile Test Facility Barking Sands, HI24 mi31 minE 87.00 miRain0°F0°F%1015.2 hPa

Wind History from HLI (wind in knots)
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Last 24hrNE14NE15NE15NE14NE14NE14NE12NE11NE9NE8N5N5W5NW6NW3N6N6N12N8N5NE8NE9NE7W9
1 day agoN13NE14N12
G20
NE11NE12
G23
NE14NE12E13NE17E19E18E16E15E14E13E12E9E11E9NE10NE12E15NE10SE8
2 days agoNE17NE18NE14NE14NE14NE14NE15NE15NE13NE14NE14NE16NE14NE13NE8NE14NE4NE12N14E13NE14NE12NE9NE14

Tide / Current Tables for Hanamaulu Bay, Kauai Island, Hawaii
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Hanamaulu Bay
Click for Map
Fri -- 03:56 AM HST     0.62 feet High Tide
Fri -- 05:54 AM HST     Sunrise
Fri -- 07:00 AM HST     Moonrise
Fri -- 09:28 AM HST     -0.41 feet Low Tide
Fri -- 04:53 PM HST     2.23 feet High Tide
Fri -- 07:14 PM HST     Sunset
Fri -- 08:35 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
00.20.40.60.60.50.30-0.2-0.4-0.4-0.20.20.81.31.82.12.22.11.71.20.70.30

Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii
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Hanalei Bay
Click for Map
Fri -- 02:45 AM HST     0.72 feet High Tide
Fri -- 05:54 AM HST     Sunrise
Fri -- 07:01 AM HST     Moonrise
Fri -- 08:02 AM HST     -0.41 feet Low Tide
Fri -- 03:42 PM HST     2.33 feet High Tide
Fri -- 07:15 PM HST     Sunset
Fri -- 08:36 PM HST     Moonset
Fri -- 10:34 PM HST     -0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.50.70.70.60.3-0-0.3-0.4-0.3-00.411.522.32.32.11.71.10.60.2-0-0

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
cpac_satellite

GOES Local Image of Hawaii    EDIT
Geos

Wind Forecast for (22,6,7,8)
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Ground Weather Radar Station Kauai, HI
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weather_mapweather_map weather_map

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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.