Monday, October14, 2019 L-36.com


Marine Weather and Tides
Nanawale Estates, HI

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 6:13AMSunset 5:59PM Monday October 14, 2019 12:47 AM HST (10:47 UTC) Moonrise 6:55PMMoonset 6:56AM Illumination 100% Phase: Full Moon; Moon at 15 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- 1034 Pm Hst Sun Oct 13 2019
Rest of tonight..East winds 20 knots. Wind waves 6 feet. Isolated showers.
Monday..East winds 20 knots. Wind waves 5 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Monday night..East winds 15 knots. Wind waves 5 feet. Isolated showers in the evening, then scattered showers after midnight.
Tuesday..East winds 15 knots. Wind waves 4 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Tuesday night..Northeast winds 15 knots. Wind waves 4 feet. Scattered showers.
Wednesday..East winds 10 knots. Wind waves 3 feet. Scattered showers.
Wednesday night..East winds 15 knots. Wind waves 4 feet. Northwest swell 3 feet. Scattered showers.
Thursday..East winds 15 knots. Wind waves 4 feet. Northwest swell 3 feet. Scattered showers.
Friday..East winds 20 knots. Wind waves 5 feet. Northwest swell 3 feet. Scattered showers.
PHZ100 1034 Pm Hst Sun Oct 13 2019
Synopsis for hawaiian coastal waters.. Moderate to locally strong trades will continue through Monday before dropping off to mainly moderate speed on Wednesday as a weakening front moves south towards the islands. The front becomes a trough over the northern offshore waters Tuesday night then move west of the area on Thursday.


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 140632
afdhfo
area forecast discussion
national weather service honolulu hi
832 pm hst Sun oct 13 2019

Synopsis
Breezy trade winds will continue through Monday, then trend down
Tuesday through midweek as a front approaches from the north. This
approaching front combined with an upper-level disturbance moving
into the area will support increasing rainfall chances by
Wednesday, which could linger into Thursday. Drier trade wind
weather will resume Friday.

Discussion
The latest surface analysis showed high pressure centered far
northeast of the islands, which is supporting the moderate to
breezy trades in place. This combined with an upper high centered
overhead, dry air and a strong subsidence inversion (5,000 to
6,000 ft) has led to stable conditions. The latest radar loop
reflects this with minimal shower coverage. Peak rainfall totals
over the past six hours ranged from one to two tenths of an inch.

The short-term guidance (through Wednesday) remains in good
agreement and depicts the dry and stable trade wind pattern holding
into Tuesday. Clouds and showers will focus over windward and
mountain locations, with the best coverage most likely occurring
through the overnight and early morning periods.

Shower coverage is forecast to trend up Tuesday night through
Thursday. High pressure aloft will shift west of the area as an
upper trough dips south and closes off into an upper low over the
islands by Wednesday. Trades will trend down, potentially enough for
a land and sea breeze regime to become established in some areas, as
a dissipating front approaches from the north. Guidance suggests
this boundary weakening into a broad surface trough as it reaches
the islands Wednesday, then drifting west of the islands by Thursday
night.

This surface feature combined with the upper low and plenty of
moisture will support better shower coverage Wednesday through
Thursday, especially through the afternoon and evening periods.

Daytime heating combined with a relatively cool pool aloft may be
enough added instability to trigger a thunderstorm or two.

For the extended period (Friday through the weekend), expect a
return of a more typical trade wind weather pattern as the upper
low moves west of the state and the atmosphere stabilizes.

Aviation
Expect moderate east-northeasterly trade winds through this
forecast period. The winds have not been enough to warrant a
sigmet for low-level turbulence and may not through Monday. Will
monitor and issue accordingly. Periods of passing MVFR conditions
are possible over windward mauka areas through Monday and will
issue sigmet for mountain obscuration only if warranted if MVFR
conditions will persist.VFR conditions elsewhere.

No airmets are currently in effect.

Marine
High pressure centered far northeast of the islands will maintain
moderate to locally strong trades for another day before trending
lower to light to moderate on Wednesday while a weakening front
approaches the islands from the north. The small craft advisory
(sca) remains in effect for the typical windier near-shore waters
of maui county and waters south of the big island through late
Monday afternoon.

The current small south swell will be on a gradual decline through
Monday. There will be a few smaller pulses coming in during the
first half of the week. In the long range, satellite data from
earlier today showed a large storm-force low well southeast of
new zealand that has generated seas of 30 to 40 ft range on
Saturday. Although the bulk of this energy will pass well east of
the islands, small south swell may reach our southern shores this
coming weekend.

Surf along exposed west facing shores may trend up tonight through
Monday as a small westerly swell from tropical cyclone hagibis
fills in. A gradual rise is expected Monday into Tuesday before
dropping off on Wednesday. Some of this energy may wrap into some
northern exposures as it fills in.

Surf will remain small along north facing shores through the first
half of the week. Then there is a potential of a small northwest
swell to reach the islands on Wednesday night through Thursday. A
passing storm system far north of the islands, possibly from once
typhoon hagibis, may reach the islands north facing shores on
Wednesday night, peak Thursday night before a gradual lowering
through Friday.

Rough and choppy surf will continue along east facing shores
through Monday, then trend down into midweek as the trades eases

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

Discussion... Gibbs
aviation... Chevalier
marine... H lau


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ILOH1 - 1617760 - Hilo, HI 21 mi53 min SSW 1.9 G 4.1 74°F 83°F1015.3 hPa
51206 22 mi31 min 82°F7 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 mi54 minWSW 510.00 miA Few Clouds74°F68°F82%1015.5 hPa

Link to 5 minute data for PHTO

Wind History from HTO (wind in knots)
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Last 24hrCalmW7SW4SW7SW5SW6SW5SW4CalmSE9NE7E8NE10E8E7E7SE9S3SW4NW5N4SW4SW5SW5
1 day agoSW6SW6SW7SW6SW5SW6SW6SW5NE4W7--CalmNE4NE7NE7SE4NW4SW3W4S4CalmSW4W7SW7
2 days ago--S5SW4S3SW3SW6SE4SW5SE5SE6E8E10E13SE10E8SE7E4CalmCalmW64SW5SW4SW5

Tide / Current Tables for Hilo, Hilo Bay, Kunio Bay, Hawaii Island, Hawaii
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Honuapo, Hawaii Island, Hawaii
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Honuapo
Click for Map
Mon -- 03:54 AM HST     2.38 feet High Tide
Mon -- 06:16 AM HST     Sunrise
Mon -- 06:59 AM HST     Moonset
Mon -- 10:22 AM HST     0.54 feet Low Tide
Mon -- 03:45 PM HST     1.91 feet High Tide
Mon -- 05:59 PM HST     Sunset
Mon -- 06:58 PM HST     Moonrise
Mon -- 09:55 PM HST     0.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.51.92.32.42.21.91.51.10.70.60.60.81.21.61.81.91.81.51.10.70.40.30.4

Weather Map
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wmap_P
GEOS 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 (6,6,7,8)
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Ground Weather Radar Station South Shore, 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.