Sunday, July22, 2018 L-36.com


Marine Weather and Tides
Heeia, HI

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 5:59AMSunset 7:15PM Sunday July 22, 2018 6:28 AM HST (16:28 UTC) Moonrise 3:24PMMoonset 2:04AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 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- 326 Am Hst Sun Jul 22 2018
Today..East winds 20 knots. Wind waves 5 feet. South swell 3 feet. Isolated showers.
Tonight..Northeast winds 20 knots. Wind waves 6 feet. South swell 3 feet. Isolated showers.
Monday..Northeast winds 20 knots. Wind waves 6 feet. South swell 3 feet. Isolated showers in the morning, then scattered showers in the afternoon.
Monday night..Northeast winds 20 knots. Wind waves 7 feet. South swell 3 feet in the evening. Scattered showers.
Tuesday..Northeast winds 20 knots. Wind waves 7 feet. Isolated showers through the day.
Tuesday night..Northeast winds 20 knots. Wind waves 7 feet. Isolated showers in the evening. Scattered showers after midnight.
Wednesday..Northeast winds 20 knots. Wind waves 7 feet. Scattered showers.
Thursday..East winds 20 knots. Wind waves 6 to 7 feet. Scattered showers.
PHZ100 326 Am Hst Sun Jul 22 2018
Synopsis for hawaiian coastal waters.. Surface high pressure far north of the islands will maintain locally breezy trade winds through mid-week.

7 Day Forecast for Marine Location Near Heeia, HI
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location: 21.44, -157.81     debug


Area Discussion for -
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Fxhw60 phfo 221320
afdhfo
area forecast discussion
national weather service honolulu hi
320 am hst Sun jul 22 2018

Synopsis
A high pressure ridge far to the north of the hawaiian islands
will continue to keep the state in a moderate trade wind weather
pattern through next week with clouds and showers favoring the
windward and mountain slopes of each island. A few weak
disturbances developing in the deep tropics will bring higher
moisture amounts northward with periods of enhanced showers
affecting the islands through week. The first round of enhanced
showers will begin today and last through Tuesday morning.

Discussion
The morning satellite and radar imagery shows clouds and showers
developing in the trade wind flow upstream of the islands. Shower
activity will trend higher later this afternoon as low level
moisture amounts rise from east to west across all islands through
the day. Precipitable water (pw) amounts will range from 1.5 to
2.0 inches as this deeper moisture plume passes slowly through the
state over the next 48 hours. The leading edge of this moisture
plume is roughly 100 miles east of hilo moving westward. Numerous
showers will develop across windward and mauka areas with periods
of scattered showers drifting over leeward sections, especially
during the overnight time periods.

In the big picture, two 1032 mb surface high pressure centers
remain far north of the islands this morning, one in the central
pacific and the second high in the east pacific. A moderately
strong high pressure ridge will remain north of the hawaiian
islands through the week. A cold front moving south near the
international date line will break down the ridge northwest of the
islands as the east pacific high builds. The break in this ridge
will cause a slight shift in ridge axis, causing the trade wind
directions to shift slightly towards the east with potentially a
slight southeasterly component from Thursday through Friday, yet
it will not significantly affect the moderate trade wind speeds.

Three periods of wet weather are forecast through the week as
several weak disturbances developing in the deep tropics will send
plumes of higher moisture amounts northward with several days of
enhanced showers across the state through the next week.

A second elevated moisture plume will drift across the state on
Thursday with pw amounts increasing back into the 1.5 to 2.0 inch
range causing numerous showers along windward and mountain slopes
with periods of scattered showers over leeward areas from
Thursday through Friday with a similar flavor of wet trade wind
weather forecast for each island. More stable air moves back into
hawaii from the east from late Friday into Saturday.

Longer range models hint at a third round of unstable moisture
and a slight increase in showers reaching the big island by
Saturday afternoon. The latest model trends keep most of the
deeper moisture south of the state with pw amounts over the
islands hovering around 1.5 inches. More forecast details on this
third system will develop later in the week as the time period
gets closer.

Aviation
Locally breezy east winds will persist through the coming week.

Cloud and shower coverage will be relatively sparse through this
morning, andVFR conditions will prevail. There will be isolated
MVFR ceilings and visibility over east sections of the islands,
but we do not anticipate that airmet sierra will be required for
mtn obsc. Clouds and showers will increase starting this afternoon
as low level moisture spreads over the islands from the east. MVFR
conditions will become widespread over east sections of the islands
and mtn obsc may become widespread enough to require airmets by
this evening. The cloudy, showery conditions are likely to
continue through tomorrow.

Marine
Surface high pressure far north of the islands will continue to
produce locally breezy trade winds. A small craft advisory (sca)
remains in effect for maalaea bay and the pailolo and alenuihaha
channels through early Monday morning. The SCA will likely
continue from Monday through mid-week for these same areas, and
may include additional waters later this week.

A new long-period south swell will continue to spread across the
islands this morning. This swell is expected to peak later today
or tonight, and then gradually lower from Monday through Tuesday.

A high surf advisory remains in effect through Monday afternoon
for south facing shores of all islands. Otherwise, only small
south swells are expected to maintain background surf along south
facing shores from mid-week into next weekend. The trade winds
will continue to produce moderate short-period choppy surf along
east facing shores this week.

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... Bohlin
aviation... Donaldson
marine... Houston


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MOKH1 - 1612480 - Mokuoloe, HI 1 mi58 min NE 4.1 G 6 78°F 80°F1014.7 hPa
51210 4 mi58 min 79°F4 ft
51207 4 mi64 min 79°F4 ft
51202 - Mokapu Point, HI (098) 7 mi54 min 80°F5 ft
OOUH1 - 1612340 - Honolulu, HI 10 mi52 min ENE 6 G 12 78°F 80°F1013.8 hPa
51211 13 mi58 min 80°F3 ft
51212 20 mi58 min 80°F3 ft

Wind History for Mokuoloe, HI
(wind in knots)    EDIT      (on/off)   Help
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E10
G14
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G15
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G14
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G12
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G12
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G9

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kaneohe, Marine Corps Air Station, HI2 mi82 minNE 510.00 miMostly Cloudy78°F71°F79%1013.9 hPa
Daniel K Inouye International Airport, HI9 mi35 minN 310.00 miA Few Clouds77°F66°F71%1014.2 hPa
Wheeler Air Force Base / Oahu, HI12 mi32 minWNW 610.00 miFair69°F65°F90%1013.9 hPa
Oahu, Kalaeloa Airport, HI16 mi35 minNE 510.00 miFair76°F66°F74%1015.2 hPa

Wind History from HNG (wind in knots)
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Last 24hrNE8NE10
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NE11NE11NE10
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NE8NE9NE6NE7NE5NE5E8E6E5NE4NE6NE5NE6NE5
1 day agoE8E86
G18
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NE9NE10NE9
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NE6NE10
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2 days agoE7E9
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NE10NE12
G17
E10E10E9E8E8E7E7E8E8E8E9E7
G15
E6

Tide / Current Tables for Honolulu, Honolulu Harbor, Oahu Island, Hawaii
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Honolulu
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Sun -- 02:04 AM HST     Moonset
Sun -- 05:55 AM HST     0.01 feet Low Tide
Sun -- 06:01 AM HST     Sunrise
Sun -- 01:31 PM HST     1.98 feet High Tide
Sun -- 03:23 PM HST     Moonrise
Sun -- 07:14 PM HST     Sunset
Sun -- 08:39 PM HST     0.52 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.80.70.50.20.100.10.30.71.11.51.8221.81.51.20.90.70.50.50.60.7

Tide / Current Tables for Hanauma Bay, Oahu Island, Hawaii
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Hanauma Bay
Click for Map
Sun -- 02:03 AM HST     Moonset
Sun -- 05:12 AM HST     0.07 feet Low Tide
Sun -- 06:00 AM HST     Sunrise
Sun -- 12:36 PM HST     1.94 feet High Tide
Sun -- 03:22 PM HST     Moonrise
Sun -- 07:13 PM HST     Sunset
Sun -- 08:01 PM HST     0.55 feet Low Tide
Sun -- 11:48 PM HST     0.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.70.50.30.20.10.10.30.611.41.71.91.91.81.61.310.70.60.60.60.70.8

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 (12,3,4,5)
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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.