Friday, March24, 2017 L-36.com


Marine Weather and Tides
Launiupoko, HI

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:23AMSunset 6:39PM Friday March 24, 2017 4:05 AM HST (14:05 UTC) Moonrise 4:04AMMoonset 3:46PM Illumination 10% Phase: Waning Crescent; Moon at 27 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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PHZ119 Maalaea Bay- 325 Am Hst Fri Mar 24 2017
.small craft advisory in effect through Sunday afternoon...
Today..Northeast winds to 25 kt. Wind waves 2 ft or less.
Tonight..North winds to 25 kt. Wind waves 2 ft or less.
Saturday..North winds to 25 kt. Wind waves 2 ft or less then 3 ft in the afternoon.
Saturday night..Northeast winds to 25 kt. Wind waves 3 ft.
Sunday..Northeast winds to 25 kt. Wind waves 3 ft.
Sunday night..Northeast winds to 25 kt. Wind waves 3 ft.
Monday..Northeast winds to 25 kt. Wind waves 3 ft.
Tuesday..Northeast winds to 25 kt. Wind waves 6 ft.
PHZ100 325 Am Hst Fri Mar 24 2017
Synopsis for hawaiian coastal waters.. A ridge north of the state will weaken today with a new high building north of the area this weekend. This high will shift eastward and produce moderate to locally strong trade winds this weekend and early next week. A very large west northwest swell will affect the area beginning Saturday.

7 Day Forecast for Marine Location Near Launiupoko, HI
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location: 20.85, -156.68     debug


Area Discussion for -
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Fxhw60 phfo 240637
afdhfo
area forecast discussion
national weather service honolulu hi
830 pm hst Thu mar 23 2017

Synopsis
A trade wind weather regime will continue at least through the
upcoming weekend. Showers riding in with the winds will favor the
windward and mountain areas, especially during the night and morning
hours. The strength of the trades will increase to moderate to
locally strong briefly for the next couple of days.

Discussion
A line of low clouds continues to affect windward maui and big
island, and to a lesser extend, windward molokai this evening,
bringing some persistent showers to those areas. Radar data
indicated windward east maui and well as west maui are seeing the
most of these showers. Gages in those areas are not picking up much
rainfall though, with only one site on west maui reporting nearly a
quarter of an inch in the past three hours. Satellite imagery
revealed this line of low clouds extending some distances east of
the islands. Therefore, expect the clouds and showers to continue to
affect those areas through rest of the evening into early Friday
morning. Some of these low clouds will eventually reach windward
oahu and even kauai, though it will probably be early Friday. Rather
fair weather continues for rest of the state and will stay that way
through early Friday. There are still some high clouds over the big
island and these will exit east of the state overnight.

A surface high pressure currently north-northeast of the islands
will move to far northeast of the area Friday, then back build a bit
westward over the rest of the weekend before settling off the west
coast early next week. In the mean time, trade winds will prevail
across the area. This high is expected to strengthen a bit over the
weekend, resulting in trade winds increasing a notch across the
state, becoming locally strong over the weekend. The aforementioned
line of low clouds will still be in the island vicinity early part
of Friday, providing clouds and showers mainly to the windward and
mountain areas. Forecast solutions hinted drier airmass may reach
the islands by the later part of Friday. Thus, an improvement in the
weather is expected for the windward areas by then.

Trade wind weather is here to stay through next week, as indicated
by forecast models. Typical low clouds embedded in the trade wind
flow will reach the islands at times, bringing some showers to
mainly windward and mountain areas. Airmass is expected to remain
somewhat stable and so rainfall amounts will not be a cause for
concern.

The trades may weaken a bit toward the later part of next week, as
forecast solutions indicate a stronger front may approach the area
from the west.

Aviation
Low clouds from an old frontal boundary are embedded within
prevailing easterly flow. These clouds will produce isolated to
scattered showers with brief periods of MVFR ceilings along
eastern slopes of all islands during the overnight period. Drier
vfr conditions expected elsewhere.

No airmets are in effect.

Marine
A new high is expected to become established to the northeast of
the islands tomorrow, which will help to strengthen winds
beginning Friday. Winds could reach small craft advisory (sca) levels
by Friday afternoon in the typical windier locations. Winds are
then expected to strengthen further this weekend with moderate to
locally breezy conditions expected, due to a new high developing
to the north of the islands.

A very large west-northwest swell is expected to build across the
island chain Saturday and Saturday night, with at least high end
advisory level surf for north and west facing shores. Surf will
be the largest on kauai and niihau, and slightly lower over the
rest of the islands due to some island shadowing. Rough and
choppy conditions will persist along east facing shores due to the
strengthening trade winds this weekend. The incoming swell will
also raise seas to SCA levels this weekend.

Hfo watches/warnings/advisories
None.

Aviation... Bohlin
marine... mballard
rest... Hui


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KLIH1 - 1615680 - Kahului Bay, Maui, HI 12 mi48 min SSE 1 G 2.9 72°F 78°F1019 hPa
51205 18 mi57 min 77°F5 ft
51203 - Kaumalapau, HI (146) 18 mi51 min 78°F3 ft
51202 - Mokapu Point, HI (098) 66 mi62 min 76°F4 ft

Wind History for Kahului, Kahului Harbor, HI
(wind in knots)    EDIT      (on/off)   Help
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Last
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W6
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G17
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G16
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G17
E6
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N4
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NE5
G9
NE14
G20
SE2
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G11
NW3
NW3
G7
NE16
G21
NE18
G22
NE15
G20
NE13
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G24
NE9
G13
NE8
G11
W6
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E3
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N2
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NE10
G14
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G17
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G22
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G25
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NE13
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NE17
NE14
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NE9
G15
NE9
G12
NE11
G15
NE13
G18
NE12
G20
N12
G16

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kahului, Kahului Airport, HI14 mi12 minSSE 610.00 miFair68°F64°F90%1019.7 hPa
Lanai City, Lanai Airport, HI15 mi10 minN 910.00 miMostly Cloudy68°F66°F93%1019.4 hPa

Wind History from HJH (wind in knots)
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Last 24hr----------------------------NE12NE12NE10NE10E12NE10E15
G22
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G24
1 day ago----------------------------NE12NE10NE12E10NE12
G22
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NE15NE12
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2 days agoNE12
G22
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G24
------------------------NE10NE12NE15NE15NE15
G22
66NE18NE17
G23
NE16
G24

Tide / Current Tables for Lahaina, Maui Island, Hawaii
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Lahaina
Click for Map
Fri -- 01:12 AM HST     1.94 feet High Tide
Fri -- 04:03 AM HST     Moonrise
Fri -- 06:26 AM HST     Sunrise
Fri -- 07:54 AM HST     0.15 feet Low Tide
Fri -- 01:34 PM HST     1.21 feet High Tide
Fri -- 03:45 PM HST     Moonset
Fri -- 06:39 PM HST     Sunset
Fri -- 07:05 PM HST     0.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.81.91.91.61.30.80.50.20.20.20.50.811.21.210.80.50.20.10.20.40.81.3

Tide / Current Tables for Kahului, Kahului Harbor, Hawaii
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Kahului
Click for Map
Fri -- 12:47 AM HST     2.11 feet High Tide
Fri -- 04:02 AM HST     Moonrise
Fri -- 06:25 AM HST     Sunrise
Fri -- 07:18 AM HST     0.44 feet Low Tide
Fri -- 12:31 PM HST     1.33 feet High Tide
Fri -- 03:44 PM HST     Moonset
Fri -- 06:27 PM HST     -0.02 feet Low Tide
Fri -- 06:38 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
22.121.71.30.90.60.40.50.70.91.21.31.31.20.90.50.2-000.20.61.11.6

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 (10,2,3,4)
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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.