Wednesday, July26, 2017 L-36.com


Marine Weather and Tides
Heeia, 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 6:01AMSunset 7:14PM Tuesday July 25, 2017 6:32 PM HST (04:32 UTC) Moonrise 8:27AMMoonset 9:24PM Illumination 7% Phase: Waxing Crescent; Moon at 3 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- 323 Pm Hst Tue Jul 25 2017
Tonight..East winds 20 knots. Wind waves 7 feet. Isolated showers through the night.
Wednesday..Northeast winds 20 knots. Wind waves 7 feet. Isolated showers.
Wednesday night..East winds 20 knots. Wind waves 6 feet. Isolated showers through the night.
Thursday..Northeast winds 15 knots. Wind waves 6 feet. Isolated showers through the day.
Thursday night..East winds 15 knots. Wind waves 5 feet. Scattered showers.
Friday..Northeast winds 15 knots. Wind waves 5 feet. Scattered showers.
Friday night..East winds 15 knots. Wind waves 5 feet. Scattered showers in the evening, then showers likely after midnight.
Saturday..East winds 15 knots. Wind waves 5 to 6 feet. Scattered showers.
Sunday..East winds 15 knots. Wind waves 6 feet. Isolated showers.
PHZ100 323 Pm Hst Tue Jul 25 2017
Synopsis for hawaiian coastal waters.. Trade winds will continue to strengthen as a surface trough moves westward away from the forecast area. A nearly stationary surface high far northeast of the islands will weaken slowly after Wednesday resulting in a decrease in the trade winds.

7 Day Forecast for Marine Location Near Heeia, HI
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location: 21.44, -157.81     debug


Area Discussion for -
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Fxhw60 phfo 260130
afdhfo
area forecast discussion
national weather service honolulu hi
330 pm hst Tue jul 25 2017

Synopsis
A trade wind weather pattern can be expected through the
remainder of the week and on through the weekend, thanks to high
pressure far to the north northeast of the area. Clouds and
passing showers will favor windward and mauka areas with just a
few brief showers expected over select leeward locations. An
uptick in shower activity is expected Friday into early Saturday
as an area of moisture moves across the area. Drier weather is
expected Sunday and Monday.

Discussion
A 1032 mb high is centered far to the north northeast of the
state. A tight pressure gradient south of the high places the
islands in a rather breezy trade wind environment. Over the next
several days, the high will drift slowly toward the east southeast
and weaken just a bit, eventually taking up a position far
northeast of the area. This will cause the pressure gradient to
slacken with trade wind speeds dropping off slightly from present
levels. The high will remain far northeast of the area through the
weekend and on into early next week. The result will be a
continuation of trade winds across the area.

Moisture associated with former tropical cyclone fernanda will
continue to move westward away from the state with a drier
airmass gradually filling in from the east overnight. Over the
smaller islands, passing showers will favor windward and mauka
areas with just a few brief showers expected over some leeward
locations. Over the big island, passing showers will favor
windward areas with daytime heating causing clouds to build up
over the leeward slopes with some spotty afternoon and evening
showers a possibility.

By Friday, global models are in good agreement showing a moister
airmass approaching the area from the east. This will likely cause
a slight uptick in shower activity especially over windward and
mauka areas. This area of moisture will move from east to west
across the area during the Friday through midday Saturday time
frame. A drier airmass is expected to move in from the east Sunday
and Monday with a downward trend in showers expected.

Aviation
Moderate to locally strong trades continue to carry some clouds
and showers over the islands, focused on the windward sides of the
islands.VFR conditions continue to prevail and are expected to
continue into Wednesday night. Although no airmets are in place at
this time, one may soon be needed for low level turbulence over
and downwind of mountain ranges.

Marine
The trades have been restored to their normal direction from the
east-northeast after being disrupted yesterday by the remnant for
former tropical cyclone fernanda. The trades have sufficient
strength over the usual windy zones around maui county and the big
island to maintain a small craft advisory. These conditions
should persist until around Thursday when the trades are forecast
to weaken a notch.

Other than choppy east shore surf, there are no significant swells
expected through the rest of the week.

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

Synopsis discussion... Burke
aviation... M ballard
marine... Kodama


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MOKH1 - 1612480 - Mokuoloe, HI 1 mi57 min E 12 G 16 80°F 82°F1016.4 hPa
51207 4 mi38 min 79°F7 ft
51210 4 mi33 min 80°F6 ft
51202 - Mokapu Point, HI (098) 7 mi59 min 80°F7 ft
OOUH1 - 1612340 - Honolulu, HI 10 mi45 min ENE 8.9 G 14 82°F 82°F1016.4 hPa
51211 13 mi63 min 82°F3 ft
51201 - Waimea Bay, HI (106) 23 mi31 min 78°F4 ft

Wind History for Mokuoloe, HI
(wind in knots)    EDIT      (on/off)   Help
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Last
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E7
E8
G12
E13
G17
E15
E8
G13
E8
G14
E10
G14
E10
G14
E7
G13
E7
G10
E10
G15
E9
G13
E8
G14
E13
G18
E14
G20
E14
G17
E15
G21
E9
G17
E14
G17
E12
G16
E12
G17
E11
G15
E12
G16
E13
G17
1 day
ago
NE11
G15
NE9
G12
NE11
NE9
G12
NE10
G18
NE8
G11
NE5
E12
G19
NE5
N2
N3
W2
G5
W3
S3
--
NE4
SE3
S2
G6
SE2
G5
E10
G14
E9
G12
E12
G16
E9
G14
E5
G9
2 days
ago
W2
G5
W3
E7
G11
E10
G16
E13
G17
E11
G15
E11
G14
E8
G14
NE10
NE9
G13
NE9
G12
NE9
G14
NE11
G14

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kaneohe, Marine Corps Air Station, HI2 mi96 minENE 11 G 177.00 miPartly Cloudy82°F73°F74%1014.8 hPa
Honolulu, Honolulu International Airport, HI9 mi40 minNE 1610.00 miMostly Cloudy82°F69°F65%1015.6 hPa
Wheeler Air Force Base / Oahu, HI12 mi35 minESE 710.00 miOvercast80°F69°F72%1015.2 hPa
Oahu, Kalaeloa Airport, HI16 mi40 minENE 10 G 1710.00 miPartly Cloudy84°F68°F59%1016.4 hPa

Wind History from HNG (wind in knots)
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Last 24hrE6E8--E9E9
G15
E8E8E7E6E6E9
G15
E7E9
G15
E11
G18
E10
G16
E9
G18
E11
G20
E13
G19
NE11
G21
E9E7
G15
E8
G17
NE11
G20
E11
G17
1 day agoNE10NE10
G16
E8NE9NE12NE10NE6NE7
G16
NE6NE8Calm5553NE3SE6SE6SE8E11E10E11E8
G16
E6
2 days agoNE8NE8
G17
E10E5
G14
E65--E6E8E5E8E8E5E12
G16
E7
G14
E12
G17
E9
G14
E9
G18
NE10NE9--E10NE10E10
G16

Tide / Current Tables for Honolulu, Honolulu Harbor, Oahu Island, Hawaii
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Honolulu
Click for Map
Wed -- 12:56 AM HST     0.04 feet Low Tide
Wed -- 06:02 AM HST     Sunrise
Wed -- 06:31 AM HST     1.05 feet High Tide
Wed -- 09:25 AM HST     Moonrise
Wed -- 11:47 AM HST     0.22 feet Low Tide
Wed -- 06:36 PM HST     2.00 feet High Tide
Wed -- 07:12 PM HST     Sunset
Wed -- 10:05 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.100.10.40.60.9110.90.70.40.30.20.30.611.41.8221.81.51.10.6

Tide / Current Tables for Hanauma Bay, Oahu Island, Hawaii
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Hanauma Bay
Click for Map
Wed -- 12:13 AM HST     0.10 feet Low Tide
Wed -- 05:36 AM HST     1.07 feet High Tide
Wed -- 06:02 AM HST     Sunrise
Wed -- 09:24 AM HST     Moonrise
Wed -- 11:04 AM HST     0.30 feet Low Tide
Wed -- 05:38 PM HST     1.98 feet High Tide
Wed -- 07:12 PM HST     Sunset
Wed -- 10:05 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.20.40.60.911.110.80.60.40.30.40.611.41.71.921.81.51.10.70.4

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 (0,6,7,8)
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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.