Sunday, July22, 2018 L-36.com


Marine Weather and Tides
Hickam Housing, HI

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Sunrise 5:59AMSunset 7:15PM Saturday July 21, 2018 8:58 PM HST (06:58 UTC) Moonrise 2:31PMMoonset 1:24AM Illumination 69% 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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PHZ116 Kaiwi Channel- 339 Pm Hst Sat Jul 21 2018
Tonight..Northeast winds 20 knots. Wind waves 5 feet. South swell 3 feet. Isolated showers.
Sunday..East winds 20 knots. Wind waves 5 feet. South swell 3 feet. Isolated showers.
Sunday night..Northeast winds 20 knots. Wind waves 5 feet. South swell 3 feet. Isolated showers.
Monday..Northeast winds 20 knots. Wind waves 5 feet. South swell 3 feet. Isolated showers in the morning, then scattered showers in the afternoon.
Monday night..East winds 20 knots. Wind waves 7 feet. South swell 3 feet in the evening. Scattered showers.
Tuesday..Northeast winds to 25 knots. Wind waves 7 feet. Scattered showers through the day.
Tuesday night..Northeast winds to 25 knots. Wind waves 7 feet. Scattered showers through the night.
Wednesday..Northeast winds to 25 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 Hickam Housing, HI
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location: 21.31, -157.91     debug


Area Discussion for -
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Fxhw60 phfo 220634
afdhfo
area forecast discussion
national weather service honolulu hi
834 pm hst Sat jul 21 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 on Sunday and last through Tuesday morning.

Discussion
Two 1032 mb surface high pressure centers are far north of the
islands this evening, one in the central pacific and the second
high in the east pacific, are helping to maintain a high pressure
ridge 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 seven days.

The first round of enhanced showers will arrive on Sunday with
higher low level moisture amounts producing increasing shower
trends across all islands through the day. Precipitable water
(pw) amounts will range from 1.5 to 2.0 inches as this bands
passes slowly through the state over the next few days. This
evenings satellite imagery shows the leading edge of this deeper
moisture plume is moving westward roughly 200 miles east of hilo.

Numerous showers will develop across windward and mauka areas with
periods of showers drifting over leeward sections as the deeper
moisture moves slowly through the state. More stable air will move
into the islands decreasing shower activity a bit on Tuesday and
Wednesday, with a brief period of higher trade wind speeds.

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 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 showers reaching the big island by Saturday afternoon and
spreading westward across the state through next Sunday. We will
continue to monitor these periods of wet trade wind weather
through the week. Stay tuned for updates as the weather pattern
slowly evolves over time.

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

Cloud and shower coverage will be relatively sparse through Sunday
morning.VFR 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 Sunday afternoon
as low level moisture spreads over the islands from the east and
mtn obsc may become widespread enough to require airmets.

Marine
Surface high pressure far north of the islands will continue to
produce locally breezy trade winds into early next week. A small
craft advisory (sca) remains in effect for maalaea bay and the
pailolo and alenuihaha channels through Sunday night. The sca
will likely continue for these waters, and be expanded to
include the waters south of the big island, starting Monday due
to a slight increase in trade wind speeds.

A new long-period south swell will continue to fill in through
early Sunday morning. This swell is expected to peak on Sunday,
and then gradually lower from Sunday night through early next
week. A high surf advisory remains in effect through Monday
afternoon for south facing shores of all islands. Otherwise,
only small background south swells are expected from mid-week
into next weekend. The trade winds will continue to produce
moderate short-period choppy surf along east facing shores
through most of next 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... Powell
marine... Houston


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OOUH1 - 1612340 - Honolulu, HI 2 mi47 min NE 4.1 G 6 79°F 80°F1015.6 hPa
51211 3 mi59 min 80°F3 ft
MOKH1 - 1612480 - Mokuoloe, HI 11 mi83 min ENE 8 G 9.9 79°F 81°F1016.1 hPa
51212 13 mi59 min 80°F3 ft
51207 14 mi35 min 79°F4 ft
51202 - Mokapu Point, HI (098) 14 mi55 min 80°F6 ft
51210 14 mi59 min 79°F4 ft

Wind History for Honolulu, HI
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NE4
G9
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G13
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NE5
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Daniel K Inouye International Airport, HI3 mi66 minENE 1010.00 miMostly Cloudy79°F64°F62%1015.5 hPa
Oahu, Kalaeloa Airport, HI9 mi66 minENE 610.00 miFair78°F64°F64%1016.6 hPa
Kaneohe, Marine Corps Air Station, HI12 mi2 hrsENE 610.00 miOvercast80°F69°F69%1014.3 hPa
Wheeler Air Force Base / Oahu, HI13 mi2 hrsNE 5 G 1510.00 miFair76°F65°F71%1014.6 hPa

Wind History from HNL (wind in knots)
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Last 24hrE9NE8NE13E11NE10NE13NE12
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1 day agoE16NE15E12NE13E9
G20
NE9NE9E7NE9NE8NE6E6E8E11NE12
G18
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NE14NE13
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NE13E15N8NE11NE13
2 days agoNE11E14NE11NE9NE8NE10E11NE9NE10NE12NE9NE10E15NE16NE19
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NE12
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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 (2,6,7,8)
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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.