Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Kahaluu, HI

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 6:19AMSunset 6:25PM Sunday September 24, 2017 1:03 PM HST (23:03 UTC) Moonrise 10:19AMMoonset 9:52PM Illumination 19% Phase: Waxing Crescent; Moon at 4 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- 929 Am Hst Sun Sep 24 2017
Rest of today..Northeast winds 15 knots. Wind waves 3 feet. Northwest swell 3 feet. Isolated showers late in the morning.
Tonight..Northeast winds 15 knots. Wind waves 3 feet in the evening then 2 feet or less. Northwest swell 3 feet. Isolated showers.
Monday..Northeast winds 10 knots. Wind waves 2 feet or less. Northwest swell 3 feet in the morning. Isolated showers in the morning.
Monday night..Northeast winds 10 knots. Wind waves 2 feet or less then 3 feet after midnight. Isolated showers.
Tuesday..Northeast winds 10 knots. Wind waves 2 feet or less. Isolated showers in the morning.
Tuesday night..Northeast winds 10 knots. Wind waves 3 feet. Northwest swell 3 feet. Isolated showers.
Wednesday..Northeast winds 10 knots. Wind waves 3 feet. Northwest swell 3 feet. Isolated showers.
Thursday..Northeast winds 15 knots. Wind waves 3 feet. North swell 3 feet. Isolated showers.
PHZ100 929 Am Hst Sun Sep 24 2017
Synopsis for hawaiian coastal waters.. A ridge of high pressure will move closer to the island chain as a cold front passes to the north, keeping wind speeds in the light to moderate range through much of this week.

7 Day Forecast for Marine Location Near Kahaluu, HI
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location: 21.46, -157.8     debug


Area Discussion for -
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Fxhw60 phfo 241921 aaa
afdhfo
area forecast discussion... Updated
national weather service honolulu hi
921 am hst Sun sep 24 2017

Synopsis
Trade winds will gradually ease during the next couple of days as
a surface ridge to the north erodes and a weak surface trough
approaches from the east. Mainly windward clouds with passing
showers will prevail through Tuesday, though leeward big island
slopes will see afternoon and evening clouds and a few showers. A
brief increase in shower activity is expected around Wednesday.

Gentle to locally moderate trade winds will likely persist into
next weekend.

Discussion
The islands remains under a somewhat stable, moderate trade wind
flow. A surface ridge about 550 miles north of kauai is driving
the trade winds, while mid level ridging is producing an inversion
between 6,000 and 8,000 ft. This inversion is slightly weakened
by an upper level trough stretching across the region, which
allowed a few briefly heavy showers to flare up along the kona
slopes of the big island last night. Otherwise, slightly below
normal moisture content in the trade wind flow continues to
generate windward rainfall of around a quarter of an inch or less
per 24 hours.

A gradual decline in trade winds will occur through tomorrow,
while a similar rainfall pattern persists. The surface ridge will
move to within 300 miles north of kauai by Monday, and a weak
surface trough currently 450 miles east and northeast of the state
will drift closer. As a result, trade winds will decline, with
afternoon sea breezes overpowering the trades across some leeward
areas. Modest rainfall will continue to be focused across
windward slopes, but afternoon clouds and possibly a brief shower
will occur across leeward terrain, especially on the big island.

Some increase in shower activity is expected midweek. The surface
trough currently 450 miles east of the state will dissipate,
leaving a diffuse area of enhanced low level moisture in the trade
wind flow. This moisture is expected to pass over the islands on
Wednesday and provide a brief increase in mainly windward
rainfall. A mid level ridge will be building overhead during this
time, reducing chances for any heavy showers. A gentle to moderate
trade wind flow will persist through the week.

Aviation
High pressure northeast of the state will keep a light to locally
moderate trade wind flow in place through tonight, with clouds
and showers favoring windward and mauka areas. Light sea breezes
and inland showers are expected to redevelop over interior and
leeward big island this afternoon and persist through early
evening. Brief MVFR cig vis is possible in passing showers,
otherwiseVFR conditions will prevail all areas.

No airmets are in effect and none are anticipated.

Marine
Trade wind speeds will remain below the small craft advisory
threshold through the forecast period.

Surf along south facing shores will remain small through the
middle of this week, with mainly background southeast and
southwest swell energy expected. A couple small, long-period
pulses out of the southwest from the tasman sea could give a slight
boost to south shore surf over the next few days.

A small northwest swell will subside through today, before
another small reinforcement from that direction fills in beginning
tonight, lasting through the middle of the week. Neither of these
swells are expected to provide more than a slight bump up in surf
for north and west facing shores.

Hfo watches warnings advisories
None.

Public... Wroe
aviation... Bedal
marine... Ts


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MOKH1 - 1612480 - Mokuoloe, HI 2 mi87 min NE 8 G 11 80°F 81°F1015.9 hPa
51210 3 mi33 min 81°F3 ft
51202 - Mokapu Point, HI (098) 7 mi59 min 81°F4 ft
OOUH1 - 1612340 - Honolulu, HI 11 mi45 min N 7 G 14 83°F 81°F1015.6 hPa
51211 14 mi63 min 82°F2 ft
51201 - Waimea Bay, HI (106) 22 mi31 min 80°F3 ft

Wind History for Mokuoloe, HI
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Last
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NE9
G13
NE5
G14
NE9
NE6
G10
NE7
G11
NE8
NE7
G10
E6
E6
G9
E7
G10
NE7
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G12
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NE11
G14
E10
G14
NE11
G14
NE8
G14
NE12
G17
E11
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G13
E11
G14
E10
E6
G10
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E5
G8
E6
NE7
NE4
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NE7
NE9
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NE9
G12
NE9
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NE15
G19
E16
G21
NE16
G21
NE13
G18
NE12
G17
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G14
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G14
NE10
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E11
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G15
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G15
NE11
G14
NE10
G13

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kaneohe, Marine Corps Air Station, HI2 mi3.1 hrsNE 97.00 miPartly Cloudy85°F68°F57%1014.8 hPa
Honolulu, Honolulu International Airport, HI10 mi70 minNE 5 G 1510.00 miPartly Cloudy87°F64°F46%1015 hPa
Wheeler Air Force Base / Oahu, HI12 mi65 minN 010.00 miFair83°F62°F49%1014.4 hPa
Oahu, Kalaeloa Airport, HI17 mi70 minSE 810.00 miA Few Clouds86°F68°F55%1016 hPa

Wind History from HNG (wind in knots)
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Last 24hrNE10--NE7--E7--NE7E5NE7NE4NE6NE6E5NE5--NE7NE6E8E7NE7E6NE9NE10NE8
1 day agoE10NE10NE11
G15
--NE8NE8E9NE9E9E8E8E8E9----NE53E4NE4--NE9--NE10E8
2 days agoE11
G20
E12
G19
NE11
G19
NE11
G16
NE11
G17
--E9
G18
NE8E11
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E9E11
G15
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E9NE6--E7E8NE9E7E9
G14
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G17
NE9
G14
NE8NE12

Tide / Current Tables for Honolulu, Honolulu Harbor, Oahu Island, Hawaii
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Honolulu
Click for Map
Sun -- 06:20 AM HST     Sunrise
Sun -- 06:52 AM HST     1.80 feet High Tide
Sun -- 10:19 AM HST     Moonrise
Sun -- 01:34 PM HST     0.60 feet Low Tide
Sun -- 06:25 PM HST     Sunset
Sun -- 06:34 PM HST     1.08 feet High Tide
Sun -- 09:52 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.60.91.21.51.71.81.71.51.210.70.60.60.70.811.11.110.80.60.5

Tide / Current Tables for Hanauma Bay, Oahu Island, Hawaii
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Hanauma Bay
Click for Map
Sun -- 05:55 AM HST     1.80 feet High Tide
Sun -- 06:20 AM HST     Sunrise
Sun -- 10:18 AM HST     Moonrise
Sun -- 12:51 PM HST     0.68 feet Low Tide
Sun -- 05:37 PM HST     1.12 feet High Tide
Sun -- 06:24 PM HST     Sunset
Sun -- 09:51 PM HST     Moonset
Sun -- 11:43 PM HST     0.44 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.60.91.21.51.71.81.71.51.31.10.80.70.70.70.911.11.110.90.70.60.5

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 (19,4,5,8)
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Ground Weather Radar Station Molokai, 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.