Friday, March24, 2017 L-36.com


Marine Weather and Tides
Laie, HI

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:29AMSunset 6:46PM Friday March 24, 2017 12:01 PM HST (22:01 UTC) Moonrise 4:10AMMoonset 3:50PM Illumination 8% Phase: Waning Crescent; Moon at 27 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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PHZ114 Oahu Windward Waters- 956 Am Hst Fri Mar 24 2017
Rest of today..East winds 15 kt. Wind waves 5 ft. Northwest swell 5 ft. Scattered showers.
Tonight..East winds 15 kt. Wind waves 4 ft. Northwest swell 4 ft. Isolated showers through the night.
Saturday..East winds 20 kt. Wind waves 5 ft. Northwest swell 5 ft increasing to 8 ft in the afternoon. Isolated showers in the morning.
Saturday night..East winds 20 kt. Wind waves 7 ft. Northwest swell 10 ft. Scattered showers.
Sunday..East winds 20 kt. Wind waves 7 ft. Northwest swell 11 ft. Scattered showers in the morning...then isolated showers in the afternoon.
Sunday night..East winds 20 kt. Wind waves 6 ft. Northwest swell 10 ft. Scattered showers.
Monday..East winds 15 kt. Wind waves 5 to 6 ft. Northwest swell 7 to 9 ft. Scattered showers.
Tuesday..East winds 20 kt. Wind waves 6 ft. Northwest swell 7 to 8 ft. Scattered showers.
PHZ100 956 Am Hst Fri Mar 24 2017
Synopsis for hawaiian coastal waters.. High pressure northeast of the state will strengthen over the next few days...providing a boost to trade winds through the weekend. Winds will ease next week as the high moves further from the state. A large west-northwest swell is expected to peak late Saturday into Sunday.

7 Day Forecast for Marine Location Near Laie CDP, HI
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location: 21.65, -157.93     debug


Area Discussion for -
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Fxhw60 phfo 241941
afdhfo
area forecast discussion
national weather service honolulu hi
941 am hst Fri mar 24 2017

Synopsis
Trades winds will prevail through the week, with a slight
increase into the locally breezy range expected during the
next couple of days. Trade winds will focus clouds and showers
along windward slopes, especially at night and in the morning. An
area of increased moisture will continue to move from east to west
across the islands today, leading to an uptick shower activity.

Discussion
A surface ridge sitting about 275 miles north of kauai is driving
easterly trade winds across the state. The recent run of rather
dry weather has been interrupted, mainly over windward slopes. A
diffuse area of low level moisture, the remnants of a long ago
dissipated front, has been drawn northward over the islands and
enhanced by a shallow upper level trough passing overhead. The
overnight hilo sounding revealed no inversion and precipitable
water values of 1.75 inches confined mainly below 13,000 ft. This
has resulted in wet conditions over windward big island,
especially the kau district where a few thunderstorms were
observed this morning. The moisture has spread northward to oahu,
where mainly a half an inch or less of rainfall has been recorded
along windward slopes.

As the area of moisture moves along the trade wind flow, windward
areas of the smaller islands will experience some increase in
rainfall today, especially across the western end of the state.

The upper level trough is not expected to significantly enhance
the showers over the smaller islands, where leeward areas will
likely only see an increase in afternoon clouds and only a few
showers. However, lingering instability on the leeward slopes of
the big island could trigger an isolated thunderstorm this
afternoon. The pocket of low level moisture will move west of the
islands overnight. The surface ridge will remain parked about 275
miles north of kauai, close enough to keep easterly trade winds
slightly lighter across kauai and oahu.

A stable, moderate to locally breezy trade wind flow will prevail
during the weekend. The enhanced low level moisture should move
west of kauai before day break on Saturday, and the upper level
trough will drift south of the big island. As a result, the
inversion is expected strengthen and come back down below 5000 ft.

With no other areas of significant low level moisture seen in the
short term, expect limited shower activity to be confined to
windward slopes and rather dry conditions leeward through at least
Monday.

In the extended, trade winds will hold through next week. The next
area of enhanced moisture could lead to an uptick in windward
rainfall on Tuesday or Wednesday, but confidence in this is low at
this time.

Aviation
Clouds and showers from an old frontal boundary are embedded
within the relatively light trade wind flow. Showers are being
enhanced near the big island by an upper trough and may result in
a few thunderstorms through the day. Airmet sierra is in effect
for tempo mountain obscurations over windward sections of all
islands except kauai due to the extensive cloud cover banked
against windward slopes. The airmet may extend to kauai or to
some leeward sections this afternoon depending on if localized sea
breezes in the more trade-wind protected areas produce extensive
cloud build ups.

Turbulence and icing impacts will be minimal and occur in the
vicinity of thunderstorms on the big island. Given the easterly to
east southeasterly background flow direction, low level wind shear
may occur during takeoff/approach to the kahului airport (phog)
today. Please see phog TAF for more information.

Marine
Winds should gradually strengthen into the weekend. A small craft
advisory (sca) has been posted for the typically windier waters
around the big island and maui county through at least Sunday
afternoon.

A large west-northwest swell is forecast to arrive Saturday and
peak late Saturday into Sunday. The more exposed areas along the
north and west facing shores of kauai and niihau could see high
surf warning (25 ft north/20 ft west) conditions, while warning
conditions for the other smaller islands remains borderline.

Island blocking will be the main factor, due to the more westerly
nature of the swell. High end advisory (15 ft+ north/12 ft+ west)
should be expected. The western shores of the big island will also
likely see advisory (8 ft) to possible warning (12 ft) level surf
from this swell, starting late Saturday night. The swell will then
gradually subside through the upcoming week.

This large swell combined with the wind waves will produce
combined seas above the SCA threshold (10 ft), and by Saturday
afternoon all waters should see SCA conditions either from seas or
winds.

Another large west-northwest swell is forecast for next weekend.

Small long period south swells will continue through this weekend
and into next week, with a slightly larger long period south swell
forecast for Wednesday night into Friday.

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

Public... Wroe
aviation... Foster
marine... Eaton


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51201 - Waimea Bay, HI (106) 10 mi29 min 75°F4 ft
51210 15 mi31 min 76°F4 ft
51207 15 mi36 min 76°F4 ft
MOKH1 - 1612480 - Mokuoloe, HI 17 mi85 min NNE 2.9 G 5.1 74°F 78°F1022.7 hPa
51202 - Mokapu Point, HI (098) 21 mi57 min 77°F5 ft
OOUH1 - 1612340 - Honolulu, HI 24 mi43 min NE 7 G 9.9 77°F 78°F1022.5 hPa

Wind History for Mokuoloe, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wheeler Air Force Base / Oahu, HI13 mi63 minE 10 G 1710.00 miMostly Cloudy76°F69°F81%1021.4 hPa
Kaneohe, Marine Corps Air Station, HI16 mi2.1 hrsNE 47.00 miOvercast77°F73°F90%1021.3 hPa
Honolulu, Honolulu International Airport, HI21 mi68 minE 1110.00 miMostly Cloudy82°F68°F63%1021.9 hPa
Oahu, Kalaeloa Airport, HI24 mi68 minENE 710.00 miMostly Cloudy84°F68°F59%1023 hPa

Wind History from HHI (wind in knots)
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Last 24hr5E564E5E9E11E5N6CalmCalmCalmCalmCalmCalmN3W5NW3NW4NW3NE3Calm--E10
G17
1 day agoSE654Calm5NW10
G15
N6E74NW4CalmCalmW3NW3NW4NW5CalmNW3CalmNW4CalmSE4SE6E8
2 days agoE9
G14
E11NE7
G15
E8
G14
E115E9E8CalmNE8E5E9CalmNE8S3E33E5E5SE3SE4E5E9E7

Tide / Current Tables for Laie Bay, Oahu Island, Hawaii
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Laie Bay
Click for Map
Fri -- 12:31 AM HST     2.08 feet High Tide
Fri -- 04:09 AM HST     Moonrise
Fri -- 06:31 AM HST     Sunrise
Fri -- 06:53 AM HST     0.46 feet Low Tide
Fri -- 12:08 PM HST     1.32 feet High Tide
Fri -- 03:50 PM HST     Moonset
Fri -- 05:56 PM HST     0.09 feet Low Tide
Fri -- 06:44 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.12.11.91.51.10.80.50.50.60.811.21.31.31.10.70.40.20.10.20.50.91.31.8

Tide / Current Tables for Haleiwa, Waialua Bay, Oahu Island, Hawaii
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Haleiwa
Click for Map
Fri -- 12:45 AM HST     1.41 feet High Tide
Fri -- 04:10 AM HST     Moonrise
Fri -- 06:29 AM HST     -0.02 feet Low Tide
Fri -- 06:32 AM HST     Sunrise
Fri -- 01:07 PM HST     0.78 feet High Tide
Fri -- 03:50 PM HST     Moonset
Fri -- 05:39 PM HST     -0.04 feet Low Tide
Fri -- 06:45 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.41.20.90.50.20-00.10.20.40.60.70.80.70.50.20-00.10.20.50.81.1

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 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.