Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Kalaoa, 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 6:00AMSunset 6:46PM Tuesday August 20, 2019 7:26 PM HST (05:26 UTC) Moonrise 10:22PMMoonset 10:19AM 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
    EDIT      (on/off)   Help
PHZ123 Big Island Leeward Waters- 331 Pm Hst Tue Aug 20 2019
.small craft advisory in effect from this evening through Thursday afternoon...
Tonight..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 8 feet. South swell 5 feet. Scattered showers in the evening, then isolated showers after midnight.
Wednesday..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 8 feet. South swell 5 feet. Isolated showers in the morning.
Wednesday night..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 8 feet. South swell 4 feet. Isolated showers through the night.
Thursday..West of the big island, winds variable less than 10 knots becoming southwest 10 knots in the afternoon. NEar south point, east winds to 25 knots. Wind waves 7 feet. South swell 3 feet. Isolated showers in the morning.
Thursday night..Winds variable less than 10 knots west of the big island...northeast 15 knots near south point. Wind waves 7 feet. South swell 3 feet. Isolated showers through the night.
Friday..West of the big island, winds variable less than 10 knots becoming southwest 10 knots in the afternoon. NEar south point, northeast winds 20 knots. Wind waves 7 feet. Isolated showers in the morning.
Friday night..West of the big island, north winds 10 knots in the evening becoming variable less than 10 knots. NEar south point, east winds 20 knots. Wind waves 7 feet. Isolated showers.
Saturday..West of the big island, winds variable less than 10 knots becoming northwest 10 knots in the afternoon, then veering southeast in the evening backing north after midnight. NEar south point, east winds to 25 knots. Wind waves 8 to 9 feet. Isolated showers.
Sunday..West of the big island, winds variable less than 10 knots becoming northwest 10 knots in the afternoon, then becoming variable less than 10 knots. NEar south point, east winds 20 knots. Wind waves 9 feet. Isolated showers.
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 Kalaoa, HI
   Hourly   EDIT   Help
location: 19.75, -156.05     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
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
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KWHH1 23 mi62 min WSW 6 G 7 83°F 85°F1014 hPa
ILOH1 - 1617760 - Hilo, HI 53 mi56 min WNW 1 G 1.9 80°F 82°F1014.9 hPa
KLIH1 - 1615680 - Kahului Bay, Maui, HI 82 mi62 min NE 14 G 17 81°F 1015.4 hPa

Wind History for Kawaihae, HI
(wind in knots)    EDIT      (on/off)   Help
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
W7
W2
G6
W3
--
NE3
NE2
NE3
N2
NE2
SW3
W7
NE4
NE2
NW2
W5
G8
W7
W9
W9
SW7
SW8
SW7
W8
W7
W5
1 day
ago
SW8
SW6
SW8
W5
NE9
NE2
G5
NW5
G11
NW3
NE3
N2
NE3
NE3
E2
W2
W4
W7
W7
W6
SW8
W9
W8
SW7
SW8
W8
2 days
ago
NE2
NE1
SE2
SW2
W5
NW7
W6
W7
SW8
SW9
SW10
SW9
SW9
SW8

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kailua / Kona, Keahole Airport, HI7 mi33 minSSW 610.00 miOvercast83°F72°F70%1014.1 hPa

Link to 5 minute data for PHKO

Wind History from HKO (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----------SE7CalmE5CalmNE73E3SE7S7S7S8--SW11SW10W8SW10SW11--S8
1 day agoS8--S10----E8CalmNE4NE7NW7--E7SE5SW5SW7--SW9S10SW12SW11SW11S10
G17
----
2 days agoCalmSW5S5--SE3E4E4Calm--CalmCalmNE4NE4N4W5SW6SW9SW9SW9SW9S9S10S9S10

Tide / Current Tables for Kailua Kona, Big Island, Hawaii (2)
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Kailua Kona
Click for Map
Wed -- 01:17 AM HST     0.36 feet Low Tide
Wed -- 06:05 AM HST     Sunrise
Wed -- 08:03 AM HST     1.53 feet High Tide
Wed -- 11:08 AM HST     Moonset
Wed -- 01:56 PM HST     0.85 feet Low Tide
Wed -- 06:47 PM HST     Sunset
Wed -- 07:06 PM HST     1.37 feet High Tide
Wed -- 10:59 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
7
pm
8
pm
9
pm
10
pm
11
pm
0.50.40.40.50.81.11.31.51.51.51.41.210.90.80.911.21.31.41.31.210.8

Tide / Current Tables for Kailua Kona, Big Island, Hawaii
   EDIT      (on/off)   Help   One Week of Data
Kailua Kona
Click for Map
Wed -- 01:23 AM HST     0.33 feet Low Tide
Wed -- 06:05 AM HST     Sunrise
Wed -- 08:07 AM HST     1.52 feet High Tide
Wed -- 11:08 AM HST     Moonset
Wed -- 02:05 PM HST     0.82 feet Low Tide
Wed -- 06:47 PM HST     Sunset
Wed -- 07:22 PM HST     1.34 feet High Tide
Wed -- 10:59 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
7
pm
8
pm
9
pm
10
pm
11
pm
0.50.30.40.50.711.31.41.51.51.31.210.90.80.911.11.21.31.31.210.8

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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 (1,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Kohala, 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.