Thursday, August24, 2017 L-36.com


Marine Weather and Tides
Kapalua, 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 6:06AMSunset 6:48PM Thursday August 24, 2017 12:31 AM HST (10:31 UTC) Moonrise 8:57AMMoonset 9:14PM Illumination 5% Phase: Waxing Crescent; Moon at 2 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
    EDIT      (on/off)   Help
PHZ120 Pailolo Channel- 930 Pm Hst Wed Aug 23 2017
.small craft advisory in effect through early Saturday morning...
Rest of tonight..East winds to 30 knots. Wind waves 8 feet. Isolated showers.
Thursday..East winds to 30 knots. Wind waves 8 feet. Isolated showers.
Thursday night..Northeast winds to 25 knots. Wind waves 7 feet. Isolated showers.
Friday..Northeast winds to 25 knots. Wind waves 6 feet. Isolated showers.
Friday night..East winds to 25 knots. Wind waves 6 feet. Isolated showers.
Saturday..East winds 20 knots. Wind waves 5 feet. Isolated showers.
Saturday night..East winds 20 knots. Wind waves 4 feet. Isolated showers.
Sunday..Northeast winds 15 knots. Wind waves 3 to 4 feet. Isolated showers.
Monday..Northeast winds 15 knots. Wind waves 3 feet. Scattered showers.
PHZ100 930 Pm Hst Wed Aug 23 2017
Synopsis for hawaiian coastal waters.. A high pressure ridge will remain nearly stationary far north of the state through Friday, then shift southward early next week.

7 Day Forecast for Marine Location Near Kapalua CDP, HI
   Hourly   EDIT   Help
location: 21.02, -156.64     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxhw60 phfo 240622
afdhfo
area forecast discussion
national weather service honolulu hi
822 pm hst Wed aug 23 2017

Synopsis
High pressure north of the state will keep a moderate to breezy
trade wind flow in place through the remainder of the work week.

The trades will then ease over the weekend and into early next
week as the ridge of high pressure north of the state weakens.

Clouds and showers will favor windward and mauka areas through the
period, with a stray shower spilling into leeward locales from
time to time. An increase in trade wind showers and a return of
muggy conditions is possible early next week as tropical moisture
lifts northward into the area from the southeast.

Discussion
Currently at the surface, a 1030 mb high centered around 1300
miles north of honolulu, is driving moderate to breezy trade winds
across the island chain this evening. Infrared satellite imagery
shows partly cloudy skies in most areas, with some pockets of
enhanced cloud cover scattered across the islands. Radar imagery
shows scattered light showers drifting into windward areas, with a
stray shower spilling over into leeward areas from time to time.

Main short term concern over the next couple days revolves around
rain chances.

High pressure north of the state will keep moderate to breezy
trade winds in place through Friday. The trades will then trend
down over the weekend, as high pressure weakens in response to a
front passing by well north of the islands. The trades will then
ramp back up to moderate and locally breezy levels once again by
the middle of next week.

Clouds and showers will favor windward and mauka areas through the
period, with a stray shower reaching leeward areas from time to
time. The trade showers may increase in coverage and intensity
Sunday through early next week, particularly across the eastern
islands, as tropical moisture works into the area from the
southeast. Muggy conditions will likely return to the island chain
Sunday through early next week as well, with both the GFS and
ecmwf showing dewpoints climbing back into the lower to middle
70s.

Aviation
A breezy and relatively dry trade wind weather pattern is
expected through Thursday, withVFR conditions prevailing
statewide. Stable and showery low clouds moving in from the ene
will provide brief periods of MVFR vis cig in shra over windward
slopes and coasts, potentially affecting terminals in lihue and
hilo. Airmet tango will remain posted for mechanical turbulence
near and downwind of the mountains.

Marine
High pressure passing north of the state has led to a
strengthening of the trade winds, with small craft advisory
conditions expanding beyond the typically windier channels and
the area south of the big island. New areas now include all zones
around maui county and oahu leeward waters. Winds will start to
decrease late in the work week, with a greater decrease through
early next week as the ridge shifts southward toward the state.

The strengthening trade winds will also lead to choppy surf along
east facing shores. In addition, smaller, longer-period energy
from a weakening kenneth far to the east of the islands may be
around through Thursday. South facing shores may see a bump this
weekend as portions of a tasman swell reach the islands.

Hfo watches warnings advisories
Small craft advisory until 6 am hst Saturday for maalaea bay-
pailolo channel-alenuihaha channel-big island leeward waters-big
island southeast waters.

Small craft advisory until 6 pm hst Thursday for oahu leeward
waters-kaiwi channel-maui county windward waters-maui county
leeward waters.

Discussion... Jelsema
aviation... Morrison
marine... Kinel


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51205 11 mi53 min 80°F7 ft
KLIH1 - 1615680 - Kahului Bay, Maui, HI 13 mi50 min NE 16 G 20 77°F 81°F1017.3 hPa
51202 - Mokapu Point, HI (098) 61 mi58 min 81°F7 ft

Wind History for Kahului, Kahului Harbor, HI
(wind in knots)    EDIT      (on/off)   Help
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
Last
24hr
NE16
G20
NE11
NE14
G18
NE14
G17
NE13
G16
NE12
G16
NE12
G17
NE15
G19
NE12
G19
NE16
G21
NE14
G17
NE15
G22
NE18
G23
NE18
G23
NE17
G25
NE19
G24
NE18
G25
NE18
G23
NE15
G22
NE14
G21
NE11
G18
NE12
G21
NE12
G21
NE11
G16
1 day
ago
NE10
G16
NE14
G17
N12
NE17
G22
NE9
G15
E5
G8
NE13
G19
NE14
G19
NE12
G21
NE11
G21
NE12
G17
NE17
G23
NE21
G27
NE18
G24
NE15
G22
NE15
G23
NE15
G22
NE17
G24
NE17
G24
NE13
G18
NE9
G12
N10
G13
NE13
G17
NE16
2 days
ago
NE15
NE14
G17
NE10
G15
NE8
G14
NE5
G16
NE17
G22
NE20
NE21
G27
NE24
NE20
G26
NE11
G20
NE14
G19
N5
G11
N9
G15
NE12
G16
NE11
G16
NE9
G12
NE13
G17
N10
NE12
G15

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kahului, Kahului Airport, HI14 mi38 minNE 13 miA Few Clouds75°F70°F84%1017.2 hPa
Lanai City, Lanai Airport, HI23 mi96 minENE 910.00 miFair72°F66°F82%1016.3 hPa

Wind History from HJH (wind in knots)
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last 24hr------------------------NE6NE11NE14
G20
NE16
G26
NE17
G27
NE18
G25
NE16
G24
NE20NE15
G26
NE18
G25
E19NE18
G26
1 day ago------------------------NE8NE8NE16NE15
G21
NE15
G23
E13
G23
E10
G18
E18
G23
E14
G19
E16
G23
NE14
G21
NE12
G22
2 days ago------------------------NE5NE8NE14CalmE12E13NE14NE13N11
G21
N14NE13NE12

Tide / Current Tables for Lahaina, Maui Island, Hawaii
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Lahaina
Click for Map
Thu -- 05:25 AM HST     1.66 feet High Tide
Thu -- 06:08 AM HST     Sunrise
Thu -- 08:56 AM HST     Moonrise
Thu -- 11:02 AM HST     0.53 feet Low Tide
Thu -- 05:24 PM HST     1.98 feet High Tide
Thu -- 06:49 PM HST     Sunset
Thu -- 09:14 PM HST     Moonset
Thu -- 11:53 PM HST     0.36 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.60.91.21.51.61.61.41.20.90.60.50.60.81.21.51.821.91.81.410.70.4

Tide / Current Tables for Kahului, Kahului Harbor, Hawaii
   EDIT      (on/off)   Help   One Week of Data
Kahului
Click for Map
Thu -- 03:52 AM HST     1.85 feet High Tide
Thu -- 06:07 AM HST     Sunrise
Thu -- 08:56 AM HST     Moonrise
Thu -- 09:48 AM HST     0.26 feet Low Tide
Thu -- 04:15 PM HST     2.28 feet High Tide
Thu -- 06:48 PM HST     Sunset
Thu -- 09:13 PM HST     Moonset
Thu -- 10:38 PM HST     0.39 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.71.11.51.81.81.71.410.60.30.30.40.81.21.72.12.32.21.91.51.10.70.40.4

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_P
IR Satellite Image from GEOS
cpac_satellite

GOES Local Image of Hawaii    EDIT
Geos

Wind Forecast for (6,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Molokai, HI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.