Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Nanawale Estates, 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 5:43AMSunset 7:04PM Wednesday June 28, 2017 12:53 PM HST (22:53 UTC) Moonrise 10:31AMMoonset 11:17PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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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PHZ122 Big Island Windward Waters- 932 Am Hst Wed Jun 28 2017
Rest of today..Northeast winds 20 knots. Wind waves 5 feet. SWell northeast 4 feet. Isolated showers.
Tonight..Northeast winds 20 knots. Wind waves 5 feet. SWell north 4 feet. Isolated showers in the evening, then scattered showers after midnight.
Thursday..Northeast winds 20 knots. Wind waves 5 feet. Isolated showers in the morning, then scattered showers in the afternoon.
Thursday night..Northeast 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 10 knots. Wind waves 4 to 5 feet. Showers likely.
Sunday..East winds 15 knots. Wind waves 5 feet. Southeast swell 3 feet. Scattered showers.
PHZ100 932 Am Hst Wed Jun 28 2017
Synopsis for hawaiian coastal waters.. A surface high far northeast of the state will maintain fresh to strong trade winds into the weekend.

7 Day Forecast for Marine Location Near Nanawale Estates, HI
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location: 19.49, -154.81     debug


Area Discussion for -
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Fxhw60 phfo 281940
afdhfo
area forecast discussion
national weather service honolulu hi
940 am hst Wed jun 28 2017

Synopsis
Breezy trade winds associated with high pressure north of the state
will continue through Friday, before slightly trending down over
the upcoming weekend. Dry and stable conditions will limit shower
activity over the state through Thursday. Showery weather will
become more likely beginning Thursday night and continuing through
the weekend. Windward and mountain areas will be the focus for
most of the shower activity.

Discussion
Upper level ridging over the state is supporting continued dry
and stable conditions aloft this morning. A near typical inversion
height around 6 to 7 thousand feet is keeping clouds and showers
limited in areal extent. These mainly dry conditions are expected
to continue statewide in the short term as the surface trade wind
flow remains in place due to the persistent surface ridge far to
the north. Limited moisture riding along in these trade winds
supports a forecast of mainly sunny and breezy conditions today.

For tonight and Thursday, little change in conditions is depicted.

However, on Thursday night, all of the more reliable model
guidance is showing an increase in moisture moving across the
state from the northeast and east. Thus, there is an increasing
likelihood for showery weather to return, especially windward and
mountain areas. The trades will be strong enough for some of the
showers to reach leeward areas as well. These wetter trade wind
conditions will likely continue into the weekend. There will
probably be daily variations in the shower distribution and trade
wind fluctuation, but for now will keep a generally wetter trend
in the forecast, which can be refined as the time approaches.

On Monday, the guidance is in agreement showing a batch of drier
and more stable air moving over the state in increasing trades,
thus giving our area breezy conditions, with locally strong gusts
as high pressure remains north of the state.

Aviation
Fresh to locally strong trade winds will continue today. Airmet
tango remains posted for low level turbulence over and immediately
south through west of the mountains. Morning soundings show a
strong low level inversion between 6-7 kft. The elevated wind
speeds and a stable atmosphere will help support the formation of
mountain waves downstream of the ranges.

Any cloud build ups and isolated showers will favor the windward
and mountain areas. Expect prevailingVFR conditions across the
islands today. Some passing clouds and showers may bring brief
MVFR conditions, mainly CIGS due to low stable clouds.

Marine
The small craft advisory (sca) includes the kaiwi channel, maui
windward waters, oahu leeward waters, the typical windy zones
around maui and the big island. The SCA is in effect through
Thursday, and may continue for some zones into Friday, followed by
slightly weaker trade winds this weekend.

The locally strong trades will produce choppy surf along east
facing shores through the rest of the work week. A small short-
period northwest swell is also forecast from Friday into this
weekend.

Small pulses of swell energy from the southeast through southwest
will continue bringing near normal summertime surf along south
facing shores. Reinforcing long-period south swells will generate
a slight bump in surf heights from Thursday into the weekend.

Hfo watches warnings advisories
Small craft advisory until 6 pm hst Thursday for oahu leeward
waters-kaiwi channel-maui county windward waters-maalaea bay-
pailolo channel-alenuihaha channel-big island leeward waters-big
island southeast waters.

Discussion... Brenchley
aviation... Eaton
marine... Foster


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ILOH1 - 1617760 - Hilo, HI 21 mi54 min NE 11 G 15 82°F 78°F1019 hPa (-1.0)
51206 22 mi57 min 79°F6 ft

Wind History for Hilo, Hilo Bay, Kuhio Bay, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hilo, Hilo International Airport, HI21 mi61 minNE 1110.00 miPartly Cloudy83°F66°F59%1019.2 hPa

Wind History from HTO (wind in knots)
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Last 24hrNE13N7NE11SE5E6CalmNE5W3W5W4CalmSW4W5W5W4SW4SW3SW4N6NW7N7N9N10NE11
1 day agoE9
G19
E9E9E10E9SE6CalmCalmSW4SW4CalmSW3SW4SW5W4SW5SW6SE3NW4NE4SW5N6N6N8
2 days agoE11E12SE9E7E6E5SE4SE3SW3SW3SW3CalmCalmW7SW4SW6SW7SW6SW5SW5SE6SE8SE8E8

Tide / Current Tables for Hilo, Hilo Bay, Kunio Bay, Hawaii Island, Hawaii
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Hilo
Click for Map
Wed -- 01:17 AM HST     0.31 feet Low Tide
Wed -- 05:44 AM HST     Sunrise
Wed -- 06:32 AM HST     1.24 feet High Tide
Wed -- 10:32 AM HST     Moonrise
Wed -- 12:02 PM HST     0.22 feet Low Tide
Wed -- 07:02 PM HST     Sunset
Wed -- 07:05 PM HST     2.40 feet High Tide
Wed -- 11:18 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.30.40.50.81.11.21.21.10.80.50.30.20.30.611.51.92.32.42.321.61.1

Tide / Current Tables for Honuapo, Hawaii Island, Hawaii
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Honuapo
Click for Map
Wed -- 01:50 AM HST     0.31 feet Low Tide
Wed -- 05:47 AM HST     Sunrise
Wed -- 07:10 AM HST     1.26 feet High Tide
Wed -- 10:35 AM HST     Moonrise
Wed -- 12:35 PM HST     0.22 feet Low Tide
Wed -- 07:03 PM HST     Sunset
Wed -- 07:43 PM HST     2.43 feet High Tide
Wed -- 11:20 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.40.30.40.70.91.21.31.210.70.40.30.20.40.81.21.72.12.42.42.21.91.4

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 (18,4,5,8)
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Ground Weather Radar Station South Shore, 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.