Tuesday, August20, 2019 L-36.com


Marine Weather and Tides
Wailea, HI

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:05AMSunset 6:53PM Tuesday August 20, 2019 5:44 PM HST (03:44 UTC) Moonrise 10:23PMMoonset 10:21AM Illumination 70% Phase: Waning Gibbous; Moon at 20 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- 331 Pm Hst Tue Aug 20 2019
.small craft advisory in effect from this evening through Thursday afternoon...
Tonight..North winds 20 knots. Wind waves 3 feet. South swell 4 feet. Isolated showers.
Wednesday..North winds to 25 knots. Wind waves 3 feet. South swell 4 feet.
Wednesday night..North winds to 25 knots. Wind waves 3 feet. South swell 3 feet.
Thursday..North winds to 25 knots. Wind waves 4 feet. South swell 3 feet.
Thursday night..North winds 15 knots. Wind waves 2 feet or less.
Friday..North winds 10 knots. Wind waves 2 feet or less.
Friday night..North winds 20 knots. Wind waves 2 feet or less.
Saturday..North winds to 25 knots. Wind waves 3 feet.
Sunday..North winds to 25 knots. Wind waves 3 feet.
PHZ100 331 Pm Hst Tue Aug 20 2019
Synopsis for hawaiian coastal waters.. A trade wind weather pattern can be expected over the next several days thanks to high pressure north of the area.


7 Day Forecast for Marine Location Near Wailea, HI
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location: 20.7, -156.43     debug


Area Discussion for -
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Fxhw60 phfo 210152
afdhfo
area forecast discussion
national weather service honolulu hi
352 pm hst Tue aug 20 2019

Synopsis
A surface ridge north of the area will maintain locally breezy
trade winds over the islands.

Discussion
The 2 pm surface analysis shows a surface ridge extending from a
high far northeast of the area near 30n133w and another high
about 700 miles northwest of the area near 31n164w. A weak trough
south of the big island is moving west around 10 miles an hour
and weakening.

The ridge north of the islands will maintain easterly trade winds
across the area. A poorly organized area of showery low clouds
associated with the trough south of the big island has been moving
over the islands. Most of the showers have moved off to the west
of the islands, but some showers remain upstream of the big island
and maui. These showers will clear the islands this evening.

Trade winds will strengthen a bit through tomorrow as the high
builds northwest of the islands. A front about 1000 miles north of
the islands will move south through Thursday and cause the trades
to weaken. On Friday, the front will move off to the west and the
high will build northeast. Trade winds will strengthen again and
become locally breezy over the weekend.

Aviation
A ridge north of the state will help to maintain moderate easterly
trade flow overnight. Isolated showers, mainly concentrated along
windward areas and over elevated terrain, will become scattered
after Sun down. Expect MVFR conditions at times tonight due to
low clouds and shra.

No airmets are currently in effect.

Marine
High pressure will strengthen north of the area providing an
uptick in trade winds speeds. Small craft advisory conditions are
expected beginning tonight over the typically windy waters around
maui county and the big island.

Data from the pacioos buoys show the new long period south swell
continues to build. Advisory level surf can be expected through
Wednesday night. This swell will hold steady through Wednesday
then lower gradually Thursday and Friday. A series of smaller long
period southerly swells are expected early next week.

A small west to northwest swell will linger over the next few
days providing some out of season surf along exposed shorelines.

Strengthening trade winds over the next several days will cause
short period choppy surf to increase along east facing shores
through the remainder of the week and on through the weekend.

Hfo watches warnings advisories
High surf advisory through 6 am Thursday for south facing shores
of all islands.

Small craft advisory through 6 pm Thursday for maalaea bay, the
pailolo and alenuihaha channels and waters south of the big
island.

Discussion... Donaldson
aviation... Thomas
marine... Burke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KLIH1 - 1615680 - Kahului Bay, Maui, HI 14 mi62 min N 9.9 G 15 81°F 1014.7 hPa
51213 31 mi44 min 85°F5 ft
51202 - Mokapu Point, HI (098) 83 mi44 min 82°F4 ft

Wind History for Kahului, Kahului Harbor, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kahului, Kahului Airport, HI14 mi50 minNE 2010.00 miPartly Cloudy and Breezy87°F73°F63%1014.7 hPa

Link to 5 minute data for PHOG

Wind History from HOG (wind in knots)
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Last 24hr----------NE8NE11NE10NE9NE12NE12--NE10NE7NE10NE11
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1 day agoNE14--NE16--NE10----E3CalmNE7N5NE8--N5NE7NE11NE15
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NE16NE18NE19NE19NE17N17NE16
2 days agoNE23
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--NE6NE10E4E7--S3CalmCalmSE3N10NE16NE18NE19NE23NE21NE22NE17NE17

Tide / Current Tables for Makena, Maui Island, Hawaii
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Makena
Click for Map
Tue -- 12:36 AM HST     0.36 feet Low Tide
Tue -- 06:06 AM HST     Sunrise
Tue -- 06:55 AM HST     1.25 feet High Tide
Tue -- 10:21 AM HST     Moonset
Tue -- 12:29 PM HST     0.71 feet Low Tide
Tue -- 06:24 PM HST     1.36 feet High Tide
Tue -- 06:51 PM HST     Sunset
Tue -- 10:23 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.40.50.70.91.11.21.31.21.10.90.80.70.70.811.11.31.41.31.210.80.6

Tide / Current Tables for Kihei, Maui (Hawaii) (2)
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Kihei
Click for Map
Tue -- 12:46 AM HST     0.36 feet Low Tide
Tue -- 06:06 AM HST     Sunrise
Tue -- 07:26 AM HST     1.65 feet High Tide
Tue -- 10:21 AM HST     Moonset
Tue -- 12:39 PM HST     0.71 feet Low Tide
Tue -- 06:51 PM HST     Sunset
Tue -- 06:55 PM HST     1.76 feet High Tide
Tue -- 10:23 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.40.50.711.31.51.61.61.51.20.90.80.70.811.31.51.71.81.71.41.10.8

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (23,6,7,8)
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Ground Weather Radar Station Kohala, 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.