Saturday, July21, 2018 L-36.com


Marine Weather and Tides
Haleiwa, HI

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:00AMSunset 7:17PM Saturday July 21, 2018 5:09 PM HST (03:09 UTC) Moonrise 2:33PMMoonset 1:24AM Illumination 68% Phase: Waxing Gibbous; Moon at 9 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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PHZ114 Oahu Windward Waters- 339 Pm Hst Sat Jul 21 2018
Tonight..East winds 20 knots. Wind waves 5 feet. South swell 3 feet. Isolated showers in the evening, then scattered showers after midnight.
Sunday..East winds 20 knots. Wind waves 5 feet. South swell 3 feet. Scattered showers.
Sunday night..East winds 20 knots. Wind waves 5 feet. South swell 3 feet. Scattered showers.
Monday..East winds 20 knots. Wind waves 5 feet. South swell 3 feet in the morning. Scattered showers.
Monday night..East winds 20 knots. Wind waves 7 feet. Scattered showers.
Tuesday..East winds 20 knots. Wind waves 7 feet. Scattered showers.
Tuesday night..East winds 20 knots. Wind waves 7 feet. Scattered showers.
Wednesday..East winds 20 knots. Wind waves 7 feet. Scattered showers.
Thursday..East winds 20 knots. Wind waves 6 to 7 feet. Scattered showers.
PHZ100 339 Pm Hst Sat Jul 21 2018
Synopsis for hawaiian coastal waters.. High pressure far northeast of the islands will maintain moderate trade winds through the period. A disturbance passing south of the state may cause an uptick of trade winds early next week.

7 Day Forecast for Marine Location Near Haleiwa, HI
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location: 21.6, -158.12     debug


Area Discussion for -
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Fxhw60 phfo 220151
afdhfo
area forecast discussion
national weather service honolulu hi
351 pm hst Sat jul 21 2018

Synopsis
Surface high pressure north of the islands will keep a moderate
trade wind flow in place through much of next week, with low
clouds and showers favoring windward and mauka areas. An area of
enhanced moisture embedded within the trades is forecast to spread
westward across the islands Sunday through early next week. This
will likely cause an increase in the coverage of low clouds and
showers over windward sections from Sunday night into early next
week, with an increase in shower chances over leeward areas as
well.

Discussion
Currently at the surface, a pair of high pressure areas are
centered to the north-northeast and north-northwest of the state,
with the ridge axis between the two highs around 1150 miles north
of kauai. Visible satellite imagery shows partly to mostly cloudy
skies in place. Meanwhile, radar imagery shows trade wind showers
moving into windward areas, with the highest coverage over the
eastern end of the island chain. Additionally, there are a few
showers that have developed over leeward sections of the big
island, with very little rain noted elsewhere. Main short term
concern revolves around rain chances.

Model solutions are in generally good agreement showing high
pressure holding in place north of the state through late next
week, with a few weak surface troughs or areas of low pressure
passing by well to the south of the island chain. This should
maintain a moderate trade wind flow through the remainder of the
weekend and much of next week. Fairly typical trade wind weather
can be expected through much of the period, with enhanced bands
of low clouds and showers moving through the island chain from
time to time, with the brunt of the shower activity favoring
windward and mauka areas. There will likely be an increase in
shower coverage and intensity in association with a weak surface
trough and surge in deeper moisture moving through the area
Sunday through Tuesday however, with a few more showers expected
in leeward areas well.

Aviation
Light to moderate trade wind flow will persist through 24 hours
and beyond. Clouds and scattered showers will remain focused
mainly over east through northeast facing slopes and coasts.

Isolated MVFR conditions are to be expected, especially over maui
and windward big island, otherwiseVFR conditions will prevail all
areas.

Shower activity will increase overnight across the smaller
islands while leeward big island will experience partial clearing
after sunset. No airmets in effect or anticipated overnight.

Mountain obscuration could become an issue for windward big island
on Sunday when a weak trough approaches the state from the
east.

Marine
High pressure far north of the area will continue to produce
moderate trade winds through the weekend and on into early next
week. A small craft advisory has been posted for the typically
windy waters around maui county through Sunday night. This may
need to be expanded to include some other zones on Monday as a
slight increase in trade winds is expected.

A new long period south swell will continue to fill in tonight.

This swell is expected to peak on Sunday, before lowering
gradually Monday through Tuesday. A high surf advisory has been
issued for all south facing shores. Easterly trade winds will
continue to produce short period choppy surf along east facing
shores through the weekend and most of next week. Otherwise, only
small, mainly background south swells are expected Wednesday
through Saturday.

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

Small craft advisory until 6 am hst Monday for maalaea bay-
pailolo channel-alenuihaha channel.

Discussion... Jelsema
aviation... Bedal
marine... Burke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51212 19 mi40 min 81°F3 ft
MOKH1 - 1612480 - Mokuoloe, HI 21 mi94 min ENE 11 G 17 80°F 81°F1015.1 hPa
51207 21 mi46 min 79°F5 ft
51210 21 mi40 min 79°F5 ft
51211 23 mi70 min 80°F3 ft
OOUH1 - 1612340 - Honolulu, HI 25 mi40 min ENE 8.9 G 16
51202 - Mokapu Point, HI (098) 27 mi36 min 80°F5 ft

Wind History for Mokuoloe, HI
(wind in knots)    EDIT      (on/off)   Help
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Last
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E9
G14
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E6
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G16
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G17
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G19
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NE13
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E11
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G16

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wheeler Air Force Base / Oahu, HI10 mi74 minENE 1410.00 miFair82°F65°F58%1013.8 hPa
Daniel K Inouye International Airport, HI20 mi77 minNE 16 G 2310.00 miMostly Cloudy88°F66°F48%1014 hPa
Oahu, Kalaeloa Airport, HI20 mi77 minENE 8 G 1410.00 miFair87°F64°F46%1014.9 hPa
Kaneohe, Marine Corps Air Station, HI21 mi2.2 hrsENE 1210.00 miOvercast83°F70°F65%1013.9 hPa

Wind History from HHI (wind in knots)
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Last 24hrE7E6E5NE5NE4E7NE5W3CalmCalmCalmNE3N4N4N4NE5E10NE11NE14
G19
E17
G21
E15E16E14E15
1 day agoNE10E8E4SE3E3E3E5E3NW3CalmCalmE3E3NE3SE4E8E8E12
G15
E11
G17
E12E10E11E12NE8
2 days agoE11
G18
E8E10SE4E8SE9SE5E7S6SE5E3CalmCalmCalmE5E6E11
G18
E14
G19
E14
G18
E13
G17
E12E13E9E11
G17

Tide / Current Tables for Haleiwa, Waialua Bay, Oahu Island, Hawaii
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Haleiwa
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Sat -- 01:24 AM HST     Moonset
Sat -- 03:09 AM HST     0.01 feet Low Tide
Sat -- 06:01 AM HST     Sunrise
Sat -- 11:46 AM HST     1.46 feet High Tide
Sat -- 02:32 PM HST     Moonrise
Sat -- 05:36 PM HST     0.51 feet Low Tide
Sat -- 07:16 PM HST     Sunset
Sat -- 10:41 PM HST     0.72 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.30.1000.20.40.60.91.11.31.41.51.31.10.90.70.50.50.60.60.70.70.7

Tide / Current Tables for Laie Bay, Oahu Island, Hawaii
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Laie Bay
Click for Map
Sat -- 01:23 AM HST     Moonset
Sat -- 03:45 AM HST     0.09 feet Low Tide
Sat -- 06:00 AM HST     Sunrise
Sat -- 12:01 PM HST     1.78 feet High Tide
Sat -- 02:31 PM HST     Moonrise
Sat -- 06:14 PM HST     0.90 feet Low Tide
Sat -- 07:15 PM HST     Sunset
Sat -- 08:50 PM HST     1.24 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.50.30.10.10.20.40.711.31.61.71.81.71.51.31.110.911.21.21.21.1

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 (23,6,7,8)
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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.