Sunday, May26, 2019 L-36.com


Marine Weather and Tides
Hanamaulu, 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 5:49AMSunset 7:09PM Saturday May 25, 2019 9:40 PM HST (07:40 UTC) Moonrise 12:30AMMoonset 11:55AM Illumination 52% Phase: Third Quarter Moon; Moon at 22 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- 932 Pm Hst Sat May 25 2019
Rest of tonight..East winds 15 knots. Wind waves 6 feet. Mixed swell northwest 5 feet and south 3 feet. Isolated showers.
Sunday..East winds 15 knots. Wind waves 5 feet. Mixed swell northwest 4 feet and south 4 feet. Isolated showers.
Sunday night..East winds 15 knots. Wind waves 5 feet. Mixed swell northwest 4 feet and south 4 feet. Isolated showers.
Monday..East winds 10 knots. Wind waves 5 feet. Mixed swell northwest 4 feet and south 4 feet. Isolated showers.
Monday night..East winds 15 knots. Wind waves 5 feet. Mixed swell northwest 4 feet and south 3 feet. Isolated showers in the evening, then scattered showers after midnight.
Tuesday..Southeast winds 10 knots. Wind waves 5 feet. Mixed swell north 3 feet and south 3 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Tuesday night..East winds 10 knots. Wind waves 4 feet. Mixed swell north 3 feet and south 3 feet. Isolated showers.
Wednesday..East winds 10 knots. Wind waves 4 feet. Mixed swell northwest 3 to 4 feet and south 3 feet. Scattered showers.
Thursday..East winds 15 knots. Wind waves 4 to 5 feet. Northwest swell 4 feet. Scattered showers.
PHZ100 932 Pm Hst Sat May 25 2019
Synopsis for hawaiian coastal waters.. High pressure located far northeast of the islands will gradually weaken from Sunday through the middle 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 260622
afdhfo
area forecast discussion
national weather service honolulu hi
822 pm hst Sat may 25 2019

Synopsis
A moderate and stable easterly trade wind flow will focus clouds
and showers across windward slopes through Sunday, with mainly
dry conditions prevailing over leeward areas. Trades will ease
slightly memorial day through Wednesday, leading to increased
chances for afternoon sea breezes and a few showers across
leeward areas. Trades are expected to strengthen Thursday into
next weekend, bringing a return of more typical trade wind weather
featuring windward and mauka showers and the occasional leeward
spillover.

Discussion
Currently at the surface, a 1027 mb high is centered around 1400
miles northeast of honolulu, while a weak front remains nearly
stationary around 250 miles northwest of kauai. The resulting
gradient is driving moderate trade winds across the state this
evening. The airmass remains rather dry and stable, with
precipitable water (pw) values between 1.1 and 1.3 inches, and
inversion heights between 5.5 and 7.5 kft. Infrared satellite
imagery shows a mix of low and high cloud across the island chain,
resulting in partly to mostly cloudy conditions. Radar imagery
shows a few showers moving into windward areas, with some
lingering daytime convective showers over leeward sections of
the big island. Main short term concern continues to revolve
around rain chances the next few days.

Model solutions are in good agreement showing high pressure
holding in place to the northeast of the state through the middle
of next week, while the stationary front lingers a couple hundred
miles northwest of the island chain. Moderate trade winds will
hold in place through Sunday, then ease slightly with boundary
layer winds shifting around to the east-southeast memorial day
through Wednesday. This will keep light to moderate east to east-
southeast winds in place across windward areas, while sea and land
breezes become common in many leeward areas. The stationary front
will dissipate by the middle of the week, with high pressure then
strengthening and shifting closer towards the state through the
end of the work week. This is expected to bring a return of trade
winds Wednesday night, with the trades then steadily strengthening
to moderate and locally breezy levels Friday into next weekend.

A fairly typical trade wind weather pattern will hold in place
through Sunday night, with showers favoring windward and mauka
areas and a stray shower reaching leeward communities from time to
time. The pattern will change slightly memorial day through
Wednesday, as sea breeze development in the more sheltered areas
will result in a few more showers developing each afternoon across
leeward and interior sections. There could be a few heavier
showers as well due to the increased moisture provided under the
east-southeasterly boundary layer flow. A transition back to more
typical trade wind weather is expected Wednesday night into next
weekend, with showers favoring windward and mauka areas.

Aviation
A high pressure center far northeast of the hawaiian islands will
produce a surface ridge north of the state. This surface ridge
will keep moderate easterly trade winds in the forecast for most
airfields over the next 24 hours. Wind speeds will likely remain
just below the threshold for moderate turbulence downstream from
mountain ranges.

A stable high pressure ridge aloft will keep lower trade wind
inversion heights around 7000 to 8000 feet, limiting shower
activity to the isolated to scattered range. Any showers that
develop will favor the windward and mountain areas. MostlyVFR
flight conditions are expected.

No airmets are in effect and none are currently forecast.

Marine
A ridge just north of the area associated with a high far to the
northeast continues to bring in fresh to locally strong trade
winds. A small craft advisory continues for the windier areas near
maui county and the big island overnight. The ridge is expected to
weaken early next week, easing winds to light to moderate levels
Sunday, with lighter winds likely Monday into Wednesday. The
second half of the week should see the ridge building north of the
islands which will allow winds to return to fresh to strong
levels.

Surf along south facing shores is on the increase due to low
pressure systems in the southern hemisphere. Surf is expected to
approach advisory levels Sunday, but will continue to monitor buoy
reports overnight before making the final decision on the need for
a high surf advisory. This swell is expected to peak Sunday and
Monday, before declining Tuesday. A new long-period, although
slightly smaller, south swell is expected to arrive Tuesday and
hold into the middle of the week. Additional small south swells
are expected during the second half of the week.

A small northwest swell associated with a gale that crossed the
dateline a few days ago is expected to hold into Sunday before
slowly easing Monday through Tuesday. Another north-northwest
swell is possible Thursday. Surf along east facing shores will
remain up through the weekend due to the recent fresh to strong
trades upstream of the islands. Expect a downward trend early next
week as the trades weaken.

Hfo watches warnings advisories
Small craft advisory until 6 am hst Sunday for maalaea bay-
pailolo channel-alenuihaha channel-big island leeward waters-big
island southeast waters.

Discussion... Jelsema
aviation... Bohlin
marine... M ballard


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWWH1 - 1611400 - Nawiliwili, HI 3 mi41 min ENE 7 G 9.9 77°F 1019 hPa
51208 24 mi41 min 6 ft
51201 - Waimea Bay, HI (106) 68 mi59 min 76°F5 ft

Wind History for Nawiliwili, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lihue, Lihue Airport, HI2 mi48 minENE 1010.00 miPartly Cloudy76°F69°F79%1018.8 hPa
Kekaha, Pacific Missile Test Facility Barking Sands, HI24 mi45 minNNE 410.00 miFair78°F75°F90%1017.9 hPa

Wind History from HLI (wind in knots)
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Last 24hrE13E14E16E13E14E11E12E12E9NE11NE11E11E12E10E11E11E12E12E11E9E9NE9NE9NE10
1 day agoE5E6E8E9E9E8E8E7NE5NE6NE7NE7E9NE9NE9NE10E11NE11NE11NE11NE11E13E13E12
2 days agoE10E9E11E9E5SW6W5W6W6SW5SW3E6E5E6E8E10E9E10E9E8E7E7E5E6

Tide / Current Tables for Hanamaulu Bay, Kauai Island, Hawaii
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Hanamaulu Bay
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Sun -- 01:08 AM HST     Moonrise
Sun -- 05:08 AM HST     0.03 feet Low Tide
Sun -- 05:54 AM HST     Sunrise
Sun -- 06:34 AM HST     Last Quarter
Sun -- 11:35 AM HST     0.63 feet High Tide
Sun -- 12:45 PM HST     Moonset
Sun -- 03:31 PM HST     0.54 feet Low Tide
Sun -- 07:14 PM HST     Sunset
Sun -- 10:18 PM HST     1.29 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.10.80.50.30.100.10.20.30.40.60.60.60.60.60.50.60.60.70.91.11.21.31.3

Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii
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Hanalei Bay
Click for Map
Sun -- 01:09 AM HST     Moonrise
Sun -- 03:42 AM HST     0.03 feet Low Tide
Sun -- 05:54 AM HST     Sunrise
Sun -- 06:34 AM HST     Last Quarter
Sun -- 10:24 AM HST     0.73 feet High Tide
Sun -- 12:46 PM HST     Moonset
Sun -- 02:05 PM HST     0.54 feet Low Tide
Sun -- 07:15 PM HST     Sunset
Sun -- 09:07 PM HST     1.39 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.40.20.100.10.20.40.60.70.70.70.70.60.50.60.70.811.21.31.41.31.2

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (3,6,7,8)
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Ground Weather Radar Station Kauai, 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.