Wednesday, January22, 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 7:10AMSunset 6:16PM Wednesday January 22, 2020 12:36 PM HST (22:36 UTC) Moonrise 5:30AMMoonset 4:35PM Illumination 5% 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- 929 Am Hst Wed Jan 22 2020
.small craft advisory in effect through Thursday afternoon...
Rest of today..Southeast winds 10 knots. Wind waves 4 feet. Northwest swell 10 feet.
Tonight..Winds variable less than 10 knots. Wind waves 3 feet. Northwest swell 14 feet. Isolated showers.
Thursday..Winds variable less than 10 knots becoming south 10 knots in the afternoon. Wind waves 3 feet. Northwest swell 12 feet. Isolated showers in the morning.
Thursday night..Winds variable less than 10 knots. Wind waves 3 feet. Northwest swell 10 feet. Isolated showers.
Friday..Winds variable less than 10 knots becoming north 10 knots in the afternoon. Wind waves 3 feet. Northwest swell 9 feet. Isolated showers in the morning.
Friday night..Northeast winds 15 knots. Wind waves 4 feet. Northwest swell 11 feet increasing to 13 feet after midnight. Isolated showers.
Saturday..East winds 15 knots. Wind waves 4 to 5 feet. Northwest swell 13 to 14 feet. Isolated showers.
Sunday..East winds 15 knots. Wind waves 5 feet. Northwest swell 11 to 13 feet. Isolated showers.
PHZ100 929 Am Hst Wed Jan 22 2020
Synopsis for hawaiian coastal waters.. A surface ridge will be near the islands through Friday. High pressure will build north of the islands Friday into Saturday, pushing a weak front into the area while also supporting a return to trade wind flow. A large northwest swell will build through tonight and gradually diminish Thursday, with another large northwest swell expected Saturday.


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


Area Discussion for -
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FXHW60 PHFO 221957 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 957 AM HST Wed Jan 22 2020

SYNOPSIS. Variable winds and a stable land and sea breeze pattern will prevail over most of the state through Friday afternoon. Expect clouds and isolated light showers each afternoon followed clearing overnight and during the early morning hours. A weak front will stall near Kauai late Friday, bringing an increase in clouds and showers for the northern end of the island chain into Saturday. Moderate trade winds will return for the weekend, then decrease early next week.

DISCUSSION. Stable and mainly dry conditions prevail this morning. The subtropical ridge has been pushed southward to a position roughly 100 miles north of Kauai, putting the state under an east- southeast background flow. Stable clouds moving onto windward and southeast Big Island and southeast Maui are producing scant rainfall. The remainder of the state is blocked from the background flow, leaving light land breezes and mostly clear skies while a small batch of showers clips Niihau. A ridge aloft is maintaining very stable conditions with a strong inversion between 4,500 to 6,500 ft.

Afternoon sea breezes will develop over the next couple of hours and dominate through most of the afternoon, resulting in interior clouds and only isolated light showers. Rainfall will be minimal.

Little change is expected over the next 48 hours. The subtropical ridge will be pushed over the islands by and approaching front. A stable land and sea pattern will hold over most areas with minimal shower activity favoring afternoon hours. An area of moisture will move up over the Big Island from the southeast Thursday, providing a slight boost in shower activity over mainly the Kau, Puna, and Hilo Districts. We will also watch the small pocket of moisture currently clipping Niihau, as it may provide a small increase in showers over interior Kauai tomorrow afternoon.

The weakening front will drift southward and stall near Kauai late Friday and Saturday. Kauai will likely experience an increase in clouds and showers, while surface high pressure building to the northwest drives increasing trade winds state- wide. A persistent mid level ridge will maintain stable conditions, with modest showers confined to windward slopes.

Trades will decrease and likely shift out of the east-southeast early next week.

AVIATION. Another round of light daytime sea breezes and overnight land breezes is in store for the Aloha State today. Currently, the majority of the clouds are situated over portions of Maui and the Big Island. Additional cloud build ups are anticipated across mainly interior sections of the island chain by this afternoon, but VFR conditions will prevail. These clouds will clear land areas during the overnight hours as land breezes take over.

No AIRMETS are in effect and none are anticipated.

MARINE. The main marine hazard the next couple of days will be related to a pair of large NW swells (and associated seas/surf), with the first swell in the process of arriving. This swell has been steadily building since last night at buoy 51001, which recently measured seas of over 10 ft at 19 seconds, while the PacIOOS Waimea buoy recently registered forerunners at nearly 5 ft 20 seconds. Although surf along most N and W facing shores started off on the smaller side this morning with long lulls between sets, surf will steadily increase through the day, and peak at dangerously high levels tonight into Thursday before gradually lowering later Thursday into Friday. A High Surf Warning and a Small Craft Advisory remain posted for exposed shorelines/marine zones. See the Coastal Hazard (CFWHFO) and Marine Weather Messages (MWWHFO) for additional details, as well as the Oahu Surf Discussion (SRDHFO). The second large NW swell is expected to arrive Friday night and peak at warning level heights Saturday, then gradually diminish Sunday and Monday.

A surface ridge will be near or over the islands into Friday, keeping winds generally light and variable, but favoring a southerly direction near Kauai, and an southeasterly direction near the Big Island. A weak front will move into the area from the N Friday into Saturday, pushed S by a high building NW and N of the islands. This high will support light to moderate trade winds over the weekend as the front stalls and dissipates near the northern end of the island chain.

HFO WATCHES/WARNINGS/ADVISORIES. High Surf Warning until 6 PM HST Thursday for north and west facing shores of Niihau, Kauai, Oahu, and Molokai, for north facing shores of Maui, and for west facing shores of Big Island.

Small Craft Advisory until 6 PM HST Thursday for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-Kauai Channel- Oahu Windward Waters-Oahu Leeward Waters-Kaiwi Channel-Maui County Windward Waters-Big Island Windward Waters-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . Wroe AVIATION . Dye MARINE . Birchard/Wroe


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51201 - Waimea Bay, HI (106) 10 mi30 min 73°F6 ft
51207 15 mi36 min 77°F4 ft
51210 15 mi36 min 77°F4 ft
MOKH1 - 1612480 - Mokuoloe, HI 17 mi60 min NNW 4.1 G 4.1 76°F 75°F1018.9 hPa
51202 - Mokapu Point, HI (098) 21 mi36 min 77°F4 ft
51211 24 mi66 min 78°F3 ft
51212 25 mi36 min 78°F4 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 mi1.7 hrsNE 710.00 miA Few Clouds75°F60°F60%1018.6 hPa
Kaneohe, Marine Corps Air Station, HI16 mi1.7 hrsNNE 510.00 miA Few Clouds78°F64°F62%1017.7 hPa
Daniel K Inouye International Airport, HI21 mi43 minSSE 710.00 miPartly Cloudy79°F61°F54%1018.5 hPa
Oahu, Kalaeloa Airport, HI24 mi43 minSSE 910.00 miFair81°F61°F51%1019.6 hPa

Link to 5 minute data for PHHI

Wind History from HHI (wind in knots)
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Last 24hrNW8NW9NW6NE7E5NW3CalmCalm--CalmCalmCalmNW3CalmCalmN3CalmCalmCalmCalm--CalmNE7E4
1 day agoE9
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E10SE8E5E5E3E3SE3CalmCalmCalmCalmNW5NW5NW4NW4CalmNW3CalmCalmCalm--S3Calm
2 days agoE11NE10
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E13E10E7E4E8E4CalmW4CalmE6W4NW5NW5CalmNW4CalmCalmCalmCalmE5E6E6

Tide / Current Tables for Laie Bay, Oahu Island, Hawaii
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Laie Bay
Click for Map
Wed -- 01:14 AM HST     2.41 feet High Tide
Wed -- 05:30 AM HST     Moonrise
Wed -- 07:11 AM HST     Sunrise
Wed -- 08:36 AM HST     0.35 feet Low Tide
Wed -- 12:54 PM HST     0.75 feet High Tide
Wed -- 04:34 PM HST     Moonset
Wed -- 06:14 PM HST     Sunset
Wed -- 06:15 PM HST     -0.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.32.42.32.11.71.30.80.50.40.40.50.60.70.70.70.50.30.1-000.30.61.11.6

Tide / Current Tables for Haleiwa, Waialua Bay, Oahu Island, Hawaii
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Haleiwa
Click for Map
Wed -- 01:56 AM HST     1.85 feet High Tide
Wed -- 05:30 AM HST     Moonrise
Wed -- 07:12 AM HST     Sunrise
Wed -- 08:17 AM HST     0.20 feet Low Tide
Wed -- 01:37 PM HST     0.52 feet High Tide
Wed -- 04:35 PM HST     Moonset
Wed -- 05:56 PM HST     -0.09 feet Low Tide
Wed -- 06:15 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.81.81.71.410.60.30.20.20.30.40.50.50.50.40.2-0-0.1-00.10.40.81.1

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 (17,4,5,8)
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Ground Weather Radar Station Molokai, HI
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weather_mapweather_map weather_map

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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.