Wednesday, January29, 2020
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Marine Weather and Tides
Laie, HI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:09AMSunset 6:20PM Tuesday January 28, 2020 10:08 PM HST (08:08 UTC) Moonrise 9:53AMMoonset 9:51PM Illumination 19% Phase: Waxing Crescent; Moon at 4 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- 942 Pm Hst Tue Jan 28 2020
.small craft advisory in effect through early Thursday morning...
Rest of tonight..Southeast winds 15 knots. Wind waves 5 feet. Northwest swell 8 feet. Isolated showers.
Wednesday..Southeast winds 10 knots. Wind waves 5 feet. Northwest swell 9 feet. Isolated showers in the morning.
Wednesday night..South winds 10 knots in the evening becoming variable less than 10 knots. Wind waves 5 feet. Northwest swell 9 feet. Isolated showers in the evening.
Thursday..Winds variable less than 10 knots. Wind waves 4 feet. Northwest swell 8 feet.
Thursday night..Winds variable less than 10 knots. Wind waves 4 feet. Northwest swell 8 feet. Isolated showers after midnight.
Friday..Northeast winds 10 knots. Wind waves 5 feet. Northwest swell 10 feet. Isolated showers in the morning, then scattered showers in the afternoon.
Friday night..Northeast winds 20 knots. Wind waves 7 feet. Northwest swell 10 feet. Scattered showers.
Saturday..East winds 15 knots. Wind waves 6 feet. North swell 8 to 9 feet. Scattered showers.
Sunday..East winds 15 knots. Wind waves 6 feet. North swell 6 to 8 feet. Scattered showers.
PHZ100 942 Pm Hst Tue Jan 28 2020
Synopsis for hawaiian coastal waters.. A ridge just north of kauai will weaken Wednesday while a front stalls and dissipate near kauai Thursday night through Friday. A surface high pressure system will then build north of the area over the weekend.


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 290637 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 837 PM HST Tue Jan 28 2020

SYNOPSIS. Stable and rather dry conditions will persist through Thursday, featuring light and variable winds across the western half of the state and east to southeast winds with light windward showers on the Big Island. A front will stall near Kauai on Friday, bringing wet and unsettled conditions across the western end of the state into Saturday as trade winds rebuild. Trades will veer southeasterly again early next week.

DISCUSSION. With the subtropical ridge just north of Kauai, easterly trade winds veered to southeasterlies this afternoon, allowing sea breezes to prevail across the smaller islands. An upper ridge keeps our airmass stable and dry, with PW values in a the 0.6 to 0.9 inch range. Except for lingering low clouds across Oahu, skies across the islands are mostly clear this evening. Radar shows little or no shower activity within viewing range.

Stable and rather dry conditions will dominate through Thursday. An approaching front will push the subtropical ridge over the islands by late Wednesday, further weakening and veering the background flow and allowing land and sea breezes to dominate. The upper ridge will remain in place and maintain stable conditions. As a result, expect light windward showers on the Big Island and east Maui. The rest of the state will be under a stable land and sea breeze pattern, featuring afternoon clouds and a few light showers followed by clearing at night.

Wet and unsettled weather will likely develop across the western end of the state late Thursday night and Friday and may last through Saturday. A front will approach from the northwest and stall near Kauai, while surface high pressure passing north of the front ushers in building trade winds. An upper trough will pass over the islands on Friday and could create enough instability to trigger heavy showers. Expect wetter conditions to favor windward areas of Kauai and Oahu with moderate, mainly windward showers elsewhere. Heading into next week, expect trades to veer southeasterly again with drier conditions.

AVIATION. Quiet weather pattern will continue through this forecast period with rather dry air and light winds. We may see a few isolated showers on windward sides of the islands, the best chance on Maui and the Big Island. Winds will continue to be light enough to have afternoon sea breezes and nighttime land breezes.

There are no AIRMETs in effect or expected through this forecast period.

MARINE. An east to west oriented surface ridge lies some 80 nm north of Kauai this evening. It is forecast to drift a little further south coming close to Kauai by this time tomorrow, where it will then gradually dissipate on Thursday. Through Wednesday, a light southeast wind flow is expected across the smaller islands and a moderate easterly wind flow for the Big Island through Wednesday. Light southeast winds should be in place across all islands. It should be noted the southeast winds will be more moderate in strength over the open waters north of the islands tonight through Wednesday night.

This change is being caused by an advancing cold front, forecast to to enter the far northwest waters by mid Thursday morning. The front weakens and stalls near Kauai Thursday night, while a brisk northeast wind flow gradually spreads over the surrounding waters of Kauai County. The front may edge on to Oahu on Saturday before stalling and turning into a trough with northeast winds to the west of the trough axis and a moist southeast wind flow to the east. To complicate things, an upper level disturbance over the islands may bring on some unsettled weather to the main Hawaiian Islands and the surrounding waters over the weekend. There are many uncertainties to the forecast at this time. But they will be ironed out in the next couple of days.

A northwest swell is currently on its way to the islands. Swell data from Buoy 51101, located some 180 nm northwest of Kauai, showed the swell reached 10 feet an hour ago, matching Wave Watch III prediction. A High Surf Advisory (HSA) is in place for the north and west facing shores for most of the islands, which is good through at least 6 am HST Thursday. This swell is a prolong one, meaning the HSA is likely to be extended into Friday. A Small Craft Advisory has also been issued for waters exposed to the swell for seas 10 feet or higher.

A more northerly swell, from 340 degrees, is slated to affect the islands north facing shores over the weekend that will extend the existing High Surf Advisory for the north facing shores, while lowering the advisory for the west facing shores. This north swell will be diminishing slowly through the early part of next week. A small to moderate pulse is expected to reach our north and west facing shores Tuesday night.

The lack of persistent trades means rather small surf to continue along the east facing shores through Thursday. The arrival of the front, ushering in some brisk northeast winds to Kauai, will bump up the surf along the island's east facing shores on Thursday. An increase in surf is possible for the other islands over the weekend should the easterly winds build back in.

Surf along south facing shores will remain small through the week. However, background south swells should be enough to keep things from going flat.

HFO WATCHES/WARNINGS/ADVISORIES. High Surf Advisory from midnight tonight to 6 AM HST Thursday for Niihau-Kauai Windward-Kauai Leeward-Waianae Coast-Oahu North Shore-Oahu Koolau-Olomana-Molokai-Maui Windward West-Maui Central Valley-Windward Haleakala.

Small Craft Advisory from midnight tonight to 6 AM HST Thursday for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-Oahu Windward Waters-Maui County Windward Waters-Big Island Windward Waters.



DISCUSSION . Powell AVIATION . Chevalier MARINE . Lau


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51201 - Waimea Bay, HI (106) 10 mi32 min 73°F6 ft
51207 15 mi38 min 76°F5 ft
51210 15 mi38 min 76°F4 ft
MOKH1 - 1612480 - Mokuoloe, HI 17 mi92 min E 8 G 12 77°F 77°F1019.2 hPa
51202 - Mokapu Point, HI (098) 21 mi38 min 77°F5 ft
51211 24 mi38 min 77°F2 ft
OOUH1 - 1612340 - Honolulu, HI 24 mi62 min 76°F 77°F1019.7 hPa
51212 25 mi38 min 78°F5 ft

Wind History for Mokuoloe, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wheeler Air Force Base / Oahu, HI13 mi72 minENE 510.00 miMostly Cloudy71°F65°F82%1019.2 hPa
Kaneohe, Marine Corps Air Station, HI16 mi71 minENE 1010.00 miPartly Cloudy76°F66°F72%1017.9 hPa
Daniel K Inouye International Airport, HI21 mi15 minNW 510.00 miPartly Cloudy75°F64°F71%1019.2 hPa
Oahu, Kalaeloa Airport, HI24 mi15 minN 010.00 miFair71°F63°F76%1020.5 hPa

Link to 5 minute data for PHHI

Wind History from HHI (wind in knots)
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Last 24hrCalmCalmCalmN3N4NW4CalmCalmNW6N3CalmN3E3S3NE3N4N4E7E8SE4SE3W3E5Calm
1 day agoNW4NW6CalmCalmCalmCalmS3S3CalmCalmCalmSE5E7E10SE7SE9SE9E7SE6E4NW5NW3CalmNW3
2 days agoW5NW3W5NW5CalmCalmCalmN6NW5NW4W3E6SE6E7E9E11
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Tide / Current Tables for Laie Bay, Oahu Island, Hawaii
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Laie Bay
Click for Map
Wed -- 05:04 AM HST     1.78 feet High Tide
Wed -- 07:10 AM HST     Sunrise
Wed -- 10:26 AM HST     Moonrise
Wed -- 12:08 PM HST     0.31 feet Low Tide
Wed -- 06:09 PM HST     1.10 feet High Tide
Wed -- 06:19 PM HST     Sunset
Wed -- 10:40 PM HST     Moonset
Wed -- 11:08 PM HST     0.66 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.91.21.51.71.81.71.51.20.90.60.40.30.40.50.70.911.11.110.80.70.7

Tide / Current Tables for Haleiwa, Waialua Bay, Oahu Island, Hawaii
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Haleiwa
Click for Map
Wed -- 05:47 AM HST     1.34 feet High Tide
Wed -- 07:11 AM HST     Sunrise
Wed -- 10:27 AM HST     Moonrise
Wed -- 11:49 AM HST     0.17 feet Low Tide
Wed -- 06:20 PM HST     Sunset
Wed -- 06:52 PM HST     0.80 feet High Tide
Wed -- 10:40 PM HST     Moonset
Wed -- 10:49 PM HST     0.45 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.60.811.21.31.31.210.70.40.20.20.20.30.50.60.70.80.80.70.60.50.4

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 (3,6,7,8)
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Ground Weather Radar Station Molokai, HI
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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 numerous 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.