Wednesday, January27, 2021
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Marine Weather and Tides
Maunaloa, HI

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:08AMSunset 6:19PM Wednesday January 27, 2021 3:25 PM HST (01:25 UTC) Moonrise 5:34PMMoonset 6:26AM Illumination 100% Phase: Full Moon; Moon at 15 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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PHZ120 Pailolo Channel- 955 Am Hst Wed Jan 27 2021
.small craft advisory in effect through early Friday morning...
Rest of today..East winds to 30 knots. Wind waves 9 feet. Scattered showers.
Tonight..East winds to 30 knots. Wind waves 10 feet. Scattered showers.
Thursday..East winds to 30 knots. Wind waves 10 feet. Isolated showers.
Thursday night..East winds to 25 knots. Wind waves 9 feet. SWell northeast 3 feet. Isolated showers in the evening. Scattered showers after midnight.
Friday..East winds to 25 knots. Wind waves 8 feet. Mixed swell northwest 3 feet and northeast 4 feet. Isolated showers.
Friday night..East winds to 25 knots. Wind waves 8 feet. Mixed swell northwest 4 feet and northeast 4 to 5 feet. Isolated showers in the evening. Scattered showers after midnight.
Saturday..East winds to 25 knots. Wind waves 7 feet. Mixed swell northwest 4 feet and northeast 5 feet. Isolated showers.
Sunday..East winds 20 knots. Wind waves 5 to 6 feet. Northwest swell 3 to 4 feet and northeast 4 to 5 feet. Isolated showers.
PHZ100 955 Am Hst Wed Jan 27 2021
Synopsis for hawaiian coastal waters.. A strong high pressure system will remain far north of the islands through Friday, producing fresh to strong easterly trade winds. This high pressure system will weaken slightly this weekend, and trade winds will decrease into the moderate to fresh range.


7 Day Forecast for Marine Location Near Maunaloa, HI
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location: 21.1, -157.2     debug


Area Discussion for -
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FXHW60 PHFO 272014 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 1014 AM HST Wed Jan 27 2021

SYNOPSIS. High pressure north of the state will keep breezy to locally windy trades in place through Friday, with a slight decrease in the trade wind speeds expected over the weekend. Showers will favor windward and mauka areas with a few showers reaching leeward areas from time to time. An old front may bring an increase in showers to the islands on Friday however. The trades will diminish and shift southerly early next week in advance of a cold front, with a more widespread rainfall event possible Tuesday into the middle of next week as the front moves into the area.

DISCUSSION. A 1032 mb surface high is centered far to the north of the state. This is providing for breezy trade winds across the area. Moisture embedded in the trades is providing for some passing showers for windward and mauka areas with most leeward locations remaining dry. Expect this weather pattern to persist through Thursday.

On Friday, moisture associated with an old front will get caught up in the trades and will likely provide an uptick in shower activity especially for windward and mauka locations. The trade winds will be sufficiently strong enough to blow some brief showers over to select leeward locations at time. This area of moisture should be through the state by Saturday. The high will linger north of the area on into early next week. Passing showers will continue to favor windward and mauka areas and be highly dependent on incoming moisture availability.

Long range guidance indicates a front will be approaching the area from the northwest Monday and Tuesday. Winds will become lighter and trend around to a southerly direction. There may be some increase in showers out ahead of the front especially on Tuesday.

AVIATION. Breezy trade winds will carry in clouds and showers today bringing tempo MVFR/isolated IFR conditions along windward slopes. Leeward slopes of the Big Island may see afternoon convection bringing isolated MVFR conditions.

AIRMET Sierra for tempo mountain obscuration is in effect for Windward Big Island.

AIRMET Tango remains in effect for low-level mechanical turbulence due to strong low level winds.

MARINE. A strong high pressure system far north of the state will keep fresh to locally strong easterly trade winds in place through Friday. A slight decrease in trade winds into the moderate to breezy range will develop by this weekend, as a weaker high passes by far north of the island chain.

Large surf along east facing shores will continue through Friday morning. The easterly trade wind swell will gradually decrease from Friday afternoon through the weekend as the high pressure system north of the area weakens. A Small Craft Advisory (SCA) for all Hawaiian waters was extended through early Friday morning. A High Surf Advisory (HSA) for exposed east facing shores was also extended through late Thursday afternoon. This HSA may extend into Friday due to continued strong trade winds.

The current northwest swell will continue to hold through tomorrow. A small, shorter-period north-northeast swell arriving tomorrow will likely continue through the weekend. A new moderate, long- period northwest swell will spread across the area late Friday, and continue through Saturday night. Northwest swell heights will slowly lower from Sunday into early next week.

A small out-of-season southwest swell from the Tasman Sea will produce a slight bump in surf heights along south facing shores today. Otherwise, expect small surf along south facing shores from Thursday through the weekend.

HFO WATCHES/WARNINGS/ADVISORIES. High Surf Advisory until 6 PM HST Thursday for Kauai Windward- Oahu Koolau-Olomana-Molokai Windward-Maui Windward West-Windward Haleakala-Big Island North and East.

Small Craft Advisory until 6 AM HST Friday for all Hawaiian waters-



DISCUSSION . Burke AVIATION . Foster MARINE . Almanza


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
51213 26 mi60 min 79°F3 ft
51202 - Mokapu Point, HI (098) 33 mi60 min 77°F10 ft
51207 39 mi60 min 77°F9 ft
51210 39 mi60 min 77°F9 ft
51205 42 mi60 min 77°F9 ft
51211 42 mi56 min 77°F4 ft

Wind History for Honolulu, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kaunakakai, Molokai Airport, HI6 mi32 minNE 15 G 3410.00 miFair78°F63°F60%1015.7 hPa

Link to 5 minute data for PHMK

Wind History from HMK (wind in knots)
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1 day ago5N3--N6CalmNE9
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N7N7NE13
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--NE13NE12
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2 days agoNE8
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NE4N3NE93CalmNE6E5N5E64N5N6NE4NE9NE7
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G19

Tide / Current Tables for Kolo, Molokai Island, Hawaii
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Kolo
Click for Map
Wed -- 03:46 AM HST     2.33 feet High Tide
Wed -- 06:26 AM HST     Moonset
Wed -- 07:07 AM HST     Sunrise
Wed -- 10:57 AM HST     0.21 feet Low Tide
Wed -- 03:30 PM HST     0.70 feet High Tide
Wed -- 05:33 PM HST     Moonrise
Wed -- 06:16 PM HST     Sunset
Wed -- 08:50 PM HST     -0.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.622.32.32.21.81.40.90.50.30.20.30.40.60.70.70.60.30.1-0.1-0.1-00.3

Tide / Current Tables for Kaunakakai, Molokai (Hawaii)
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Kaunakakai
Click for Map
Wed -- 03:38 AM HST     2.39 feet High Tide
Wed -- 06:25 AM HST     Moonset
Wed -- 07:06 AM HST     Sunrise
Wed -- 10:50 AM HST     0.14 feet Low Tide
Wed -- 03:28 PM HST     0.72 feet High Tide
Wed -- 05:33 PM HST     Moonrise
Wed -- 06:15 PM HST     Sunset
Wed -- 08:48 PM HST     -0.18 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.62.12.32.42.21.81.30.80.40.20.10.20.40.60.70.70.60.30.1-0.1-0.2-00.3

Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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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.