Tuesday, October22, 2019 L-36.com


Marine Weather and Tides
Kahaluu, 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 6:28AMSunset 6:02PM Tuesday October 22, 2019 2:43 PM HST (00:43 UTC) Moonrise 12:52AMMoonset 2:23PM Illumination 31% Phase: Waning Crescent; Moon at 24 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- 919 Am Hst Tue Oct 22 2019
.small craft advisory in effect through early Wednesday morning...
Rest of today..East winds to 25 knots. Wind waves 6 feet. Isolated showers.
Tonight..East winds to 25 knots. Wind waves 6 feet. Northwest swell 3 feet after midnight. Isolated showers through the night.
Wednesday..East winds 20 knots. Wind waves 6 feet. Northwest swell 3 feet. Isolated showers.
Wednesday night..East winds 15 knots. Wind waves 5 feet. Northwest swell 3 feet. Isolated showers.
Thursday..East winds 15 knots. Wind waves 5 feet. Northwest swell 3 feet. Isolated showers.
Thursday night..East winds 15 knots. Wind waves 4 feet. Northwest swell 4 feet. Isolated showers.
Friday..East winds 15 knots. Wind waves 4 feet. North swell 4 to 6 feet. Isolated showers.
Saturday..East winds 15 knots. Wind waves 4 feet. North swell 5 to 6 feet. Isolated showers.
PHZ100 919 Am Hst Tue Oct 22 2019
Synopsis for hawaiian coastal waters.. A ridge of high pressure will persist north of the area through mid-week then weaken during the second half of the week, while a front settles in far north of the islands.


7 Day Forecast for Marine Location Near Kahaluu, HI
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location: 21.46, -157.8     debug


Area Discussion for -
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Fxhw60 phfo 221951
afdhfo
area forecast discussion
national weather service honolulu hi
951 am hst Tue oct 22 2019

Synopsis
A ridge to the north will maintain locally breezy easterly trade
winds over the area through tomorrow. The trades will focus winds
over mainly windward areas. Winds will weaken from tomorrow
evening through the weekend as a couple of fronts approach from
the northwest.

Discussion
Satellite loops and surface observations show partly cloudy skies
over the islands. Breezy easterly trade winds are blowing across
the area. Radars show only isolated light showers moving along in
the trade-wind flow.

The 8 am surface analysis shows a strong 1033 mb surface high far
northeast of the islands near 38n 135w. A ridge extends southwest
from the high to about 400 miles north of the area. A front lies
about 900 miles northwest of the islands and a weak trough is
about 750 miles to the south. The pressure gradient between the
ridge north of the islands and the trough to the south will
maintain breezy trade winds over the islands through tomorrow.

The ridge north of the area is forecast to erode over the second
half of the week as a series of fronts approach from the
northwest. The fronts will stall well northwest of the islands,
but trade winds will weaken as the ridge erodes. The trade winds
will continue to carry some clouds and showers over windward
areas, but rainfall should generally be light. An area of moisture
associated with a tropical disturbance southeast of the islands
could spread north far enough to bring an increase in showers to
the big island Friday night, but it remains uncertain how far
north the moisture will spread.

Aviation
Locally breezy trades continue for today with showers favoring
windward and mauka locales. This may result in brief periods of
MVFR conditions for these areas. Showers will increase into the
overnight hours, particularly for the big island as an area of
increased moisture moves in from the east.

Airmet tango remains in effect for areas south and west of the
mountains of all islands for low level turbulence below 8,000ft.

May be able to drop this airmet later tonight into Wednesday as
winds are expected to weaken.

Marine
High pressure centered far northeast of the islands will maintain
moderate to strong trades through Wednesday over the coastal waters.

A small craft advisory (sca) is posted for the typical windy
waters around maui county and the big island plus windward maui
waters and leeward oahu waters based on an ascat pass form last
night. The sca GOES through tonight with the aforementioned windy
waters continuing into Wednesday. Moderate, choppy surf will
continue along east facing shores through Thursday.

Trade winds will weaken as a front approaches to 450 miles north
of kauai Thursday and Friday. Winds will shift slightly east
southeast during this time and weaken to gentle to moderate speeds.

A second front will approach over the weekend and continue the
lighter-than-normal wind regime into early next week.

A series of northwest swells is expected over the coming days
with each bump being a little bit larger. A small bump first rolls
in late tonight and Wednesday morning followed by a moderate
north swell on Friday. A large northwest swell will build on
Sunday, bringing advisory level surf to the north and west facing
shores between Sunday and Tuesday. This swell will peak Monday
before trending down slowly.

Surf will remain small along south facing shores.

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

Small craft advisory until 6 am hst Wednesday for oahu leeward
waters-kaiwi channel-maui county windward waters.

Discussion... Donaldson
aviation... Dye
marine... Foster


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MOKH1 - 1612480 - Mokuoloe, HI 2 mi68 min E 6 G 11 83°F 82°F1015.1 hPa
51207 3 mi44 min 81°F6 ft
51210 3 mi44 min 81°F6 ft
51202 - Mokapu Point, HI (098) 7 mi104 min 81°F7 ft
OOUH1 - 1612340 - Honolulu, HI 11 mi62 min ESE 5.1 G 12 85°F 83°F1013.9 hPa
51211 14 mi74 min 82°F3 ft
51212 21 mi44 min 83°F3 ft
51201 - Waimea Bay, HI (106) 22 mi38 min 79°F4 ft

Wind History for Mokuoloe, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kaneohe, Marine Corps Air Station, HI2 mi82 minENE 910.00 miPartly Cloudy84°F71°F65%1014.2 hPa
Daniel K Inouye International Airport, HI10 mi51 minENE 15 G 2210.00 miA Few Clouds89°F66°F47%1013.7 hPa
Wheeler Air Force Base / Oahu, HI12 mi48 minE 1110.00 miFair84°F68°F59%1013.4 hPa
Oahu, Kalaeloa Airport, HI17 mi1.8 hrsE 10 G 1810.00 miPartly Cloudy89°F68°F50%1015.5 hPa

Link to 5 minute data for PHNG

Wind History from HNG (wind in knots)
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Last 24hrE10E10
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1 day agoE10NE8E7E5E7E7E3E6E8
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E9E8E5E9E75E7SE5SW43SW3SW3CalmNW3E7E6E8

Tide / Current Tables for Honolulu, Honolulu Harbor, Oahu 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 Hanauma Bay, Oahu Island, Hawaii
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Hanauma Bay
Click for Map
Tue -- 12:51 AM HST     Moonrise
Tue -- 03:29 AM HST     0.55 feet Low Tide
Tue -- 06:29 AM HST     Sunrise
Tue -- 10:33 AM HST     2.06 feet High Tide
Tue -- 02:22 PM HST     Moonset
Tue -- 06:01 PM HST     Sunset
Tue -- 06:09 PM HST     0.21 feet Low Tide
Tue -- 11:42 PM HST     1.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.70.60.60.60.70.91.21.61.9221.91.61.30.90.50.30.20.30.40.70.91.1

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 (20,4,5,8)
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Ground Weather Radar Station Molokai, 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.