Monday, January25, 2021
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Marine Weather and Tides
Laie, HI

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:18PM Monday January 25, 2021 9:40 AM HST (19:40 UTC) Moonrise 3:44PMMoonset 4:42AM Illumination 93% Phase: Waxing Gibbous; Moon at 12 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- 930 Am Hst Mon Jan 25 2021
.small craft advisory in effect through Wednesday afternoon...
Rest of today..East winds to 25 knots. Wind waves 12 feet. Northwest swell 4 feet. Scattered showers.
Tonight..East winds to 25 knots. Wind waves 13 feet. Northwest swell 3 feet. Scattered showers.
Tuesday..East winds to 25 knots. Wind waves 12 feet. Showers likely.
Tuesday night..East winds to 25 knots. Wind waves 11 feet. Showers likely.
Wednesday..East winds to 25 knots. Wind waves 11 feet. Scattered showers.
Wednesday night..East winds to 25 knots. Wind waves 11 feet. Northwest swell 3 feet after midnight. Scattered showers.
Thursday..East winds 20 knots. Wind waves 10 to 11 feet. Northwest swell 3 to 5 feet and northeast 3 to 4 feet. Scattered showers.
Friday..East winds 20 knots. Wind waves 9 feet. Northwest swell 5 to 7 feet and northeast 4 feet. Scattered showers.
PHZ100 930 Am Hst Mon Jan 25 2021
Synopsis for hawaiian coastal waters.. Strong high pressure will remain far north and northeast of the state through the week. A surface trough developing over the waters south of the islands will track northwestward through the first half of the week.


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 251337 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 337 AM HST Mon Jan 25 2021

SYNOPSIS. A strong high northeast of the area and a trough to the southwest will combine to produce locally strong southeast winds over the islands through midweek. Very humid air carried by the southeast flow will keep the Big Island very wet over the next couple of days, with heavy snow over the summits. The smaller islands will be less rainy, but some of the rain may reach the smaller islands by mid-week. During the second half of the week the trough will move away to the west. Winds will shift out of the east and rainfall will diminish.

DISCUSSION. A strong 1038 mb high far northeast of the area and a trough about 650 miles west of Kauai are combining to produce locally strong east to southeast winds over the main Hawaiian Islands. High clouds blanket the area. Radars show widespread showers moving over the Big Island from the southeast. There are numerous showers over windward east Maui, with only isolated showers elsewhere over the smaller islands.

A deep northwest to southeast trough aloft will persist west of the islands over the next couple of days. This trough is making the atmosphere over the islands unstable and helping to pull very moist air over the islands from the southeast. This will produce heavy rain over the Big Island with snow over the summits of Mauna Kea and Mauna Loa. A Flash Flood Watch and a Winter Weather Warning are in effect for the Big Island. Less rain will reach the smaller islands, at least through this evening. More of the moisture may spread over the smaller islands by tomorrow.

The global models show the trough aloft weakening starting Wednesday as a ridge aloft builds over the area from the north. The atmosphere over the islands will become more stable and the moist air will move away to the west. That should bring a decrease in rainfall for the second half of the week, with showers focused over mainly windward areas.

AVIATION. Breezy east-southeast winds will continue in windward areas today and tonight. Meanwhile winds in leeward areas will remain light through mid morning, then pick up to moderate levels out of the east-southeast this afternoon, then ease again tonight. Deep tropical moisture will continue to spread northwest across the state during the next 24 hours, although the most unsettled weather is expected over east and southeast facing sections of the Big Island. In these areas, widespread MVFR conditions can be expected, with occasional IFR cigs/vsbys. Across the smaller islands, passing showers will bring temporary MVFR cigs/vsbys to windward areas, with more widespread MVFR conditions possible over Kauai tonight. Generally VFR conditions will prevail in leeward areas, although some MVFR cigs/vsbys could become more common this afternoon through tonight.

AIRMET Sierra remains in effect for mountain obscuration across northeast through southeast facing sections of Kauai, Oahu, Molokai, Maui, and the Big Island. These conditions will likely continue through the day today, and possibly through tonight.

AIRMET Tango remains in effect for low level turbulence over and downwind of the terrain of all islands. These conditions are expected to continue through tonight. AIRMET Tango is also in effect for strong surface winds over some adjacent coastal waters.

AIRMET Zulu remains in effect for moderate rime icing over the Big Island and adjacent waters to the east. These conditions will likely remain in place through today, and possibly through tonight.

MARINE. Strong east-southeast winds associated with high pressure will continue over the Hawaiian waters through the week. Rough conditions with seas at and above the Small Craft Advisory level of 10 ft will be the result across exposed waters.

Surf along east facing shores will remain rough due to the aforementioned strong onshore winds locally and upstream across the eastern Pacific driving large seas through the area. The advisory in place will likely become extended into Wednesday. A slightly downward trend will be possible through the second half of the week as the upstream fetch diminishes across the eastern Pacific.

Surf along north and west facing shores will steadily lower through tonight as a northwest swell eases. Large scale pattern change across the Pacific over the past week featuring a blocking pattern setting up east of the Date Line will translate to an end to the active run of large swells that began in the second half of December and continued through the first half of January. Surf will respond and drop well below the January average Tuesday through midweek.

For the long range, guidance shows a developing hurricane-force low around 2000 nm northwest of Hawaii this morning tracking northward toward the western Aleutians through Tuesday. Wave models reflect this and show small, long-period energy arriving through the day Thursday out of the west-northwest, then trending up out of the northwest Friday into the weekend. Large errors typically associated with these sources lead to low forecast confidence.

Surf along south facing shores will trend up today through midweek, as an out-of-season Tasman source arrives. Nearshore PacIOOS buoy observations locally are reflecting this energy beginning to fill in within the 18-22 second bands. Surf should drop and return to normal levels through the second half of the week.

HFO WATCHES/WARNINGS/ADVISORIES.

Winter Weather Warning through 6 PM Tuesday for the summits of Mauna Kea and Mauna Loa on the Big Island.

High Surf Advisory until 6 PM Tuesday for east facing shores of the Big Island, Maui, Molokai, Oahu and Kauai.

Flash Flood Watch through Tuesday afternoon for the Big Island.

Small Craft Advisory until 6 PM Wednesday for all Hawaiian waters.

DISCUSSION . Donaldson AVIATION . Jelsema MARINE . Gibbs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51207 15 mi45 min 77°F10 ft
51210 15 mi45 min 77°F10 ft
MOKH1 - 1612480 - Mokuoloe, HI 17 mi65 min ESE 18 G 24 75°F 1017.3 hPa
51202 - Mokapu Point, HI (098) 21 mi45 min 77°F12 ft
51211 24 mi71 min 78°F4 ft
OOUH1 - 1612340 - Honolulu, HI 24 mi53 min 77°F 77°F1017.4 hPa
51212 25 mi45 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 hrsE 65.00 miLight Drizzle72°F66°F83%1017.3 hPa
Kaneohe, Marine Corps Air Station, HI16 mi73 minESE 11 G 2310.00 miOvercast77°F69°F77%1016.3 hPa
Daniel K Inouye International Airport, HI21 mi48 minENE 1110.00 miMostly Cloudy78°F66°F67%1016.9 hPa
Oahu, Kalaeloa Airport, HI24 mi48 minVar 410.00 miMostly Cloudy77°F68°F74%1018.1 hPa

Link to 5 minute data for PHHI

Wind History from HHI (wind in knots)
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Last 24hr----------------------------E1----E2NW1CalmSE5E3E6E6
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Laie Bay, Oahu Island, Hawaii
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Laie Bay
Click for Map
Mon -- 12:46 AM HST     2.21 feet High Tide
Mon -- 04:42 AM HST     Moonset
Mon -- 07:11 AM HST     Sunrise
Mon -- 08:13 AM HST     0.45 feet Low Tide
Mon -- 12:14 PM HST     0.74 feet High Tide
Mon -- 03:43 PM HST     Moonrise
Mon -- 05:41 PM HST     0.04 feet Low Tide
Mon -- 06:17 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.22.22.11.81.41.10.70.50.50.50.60.70.70.70.60.40.20.10.10.20.50.91.41.8

Tide / Current Tables for Haleiwa, Waialua Bay, Oahu Island, Hawaii
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Haleiwa
Click for Map
Mon -- 01:29 AM HST     1.69 feet High Tide
Mon -- 04:43 AM HST     Moonset
Mon -- 07:11 AM HST     Sunrise
Mon -- 07:54 AM HST     0.28 feet Low Tide
Mon -- 12:57 PM HST     0.51 feet High Tide
Mon -- 03:44 PM HST     Moonrise
Mon -- 05:22 PM HST     -0.05 feet Low Tide
Mon -- 06:17 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.71.71.51.20.80.50.30.30.30.40.40.50.50.40.30.1-0-00.10.30.60.91.2

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
Ground Weather Radar Station




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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.