Wednesday, January27, 2021
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Marine Weather and Tides
Wailea, 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 7:02AMSunset 6:15PM Wednesday January 27, 2021 5:00 PM HST (03:00 UTC) Moonrise 5:32PMMoonset 6:22AM 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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PHZ119 Maalaea Bay- 333 Pm Hst Wed Jan 27 2021
.small craft advisory in effect through early Friday morning...
Tonight..North winds to 30 knots. Wind waves 4 feet.
Thursday..North winds to 30 knots. Wind waves 4 feet.
Thursday night..North winds to 25 knots. Wind waves 4 feet.
Friday..North winds to 25 knots. Wind waves 3 feet. Isolated showers in the afternoon.
Friday night..North winds to 25 knots. Wind waves 3 feet.
Saturday..North winds to 25 knots. Wind waves 3 feet.
Saturday night..North winds to 25 knots. Wind waves 3 feet.
Sunday..North winds 20 knots. Wind waves 3 feet.
Monday..North winds 15 knots. Wind waves 2 feet or less. Isolated showers.
PHZ100 333 Pm 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. Winds will shift out of the southeast early next week ahead of an approaching front.


7 Day Forecast for Marine Location Near Wailea, HI
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location: 20.7, -156.43     debug


Area Discussion for -
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FXHW60 PHFO 280145 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 345 PM HST Wed Jan 27 2021

SYNOPSIS. A trade wind weather pattern is expected over the next several days thanks to high pressure north of the area. Clouds and passing showers will favor windward and mauka areas with the trade winds sufficiently strong enough to blow a few brief showers over leeward areas at times. Winds will become southerly early next week as a front approaches from the northwest. The front is expected to move into the western and central islands Tuesday night and Wednesday accompanied by a period of showers.

DISCUSSION. A 1030 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. The exception is the Kona slopes on the Big Island where daytime heating has caused clouds and showers to form. 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. Current timing has the front reaching Kauai Tuesday night and then moving across Oahu and Maui County on Wednesday. The front will be accompanied by a period of showers, some could be locally heavy. It's still a bit far out in the forecast to add in the potential for thunderstorms but current guidance does indicate that there is some potential. Later shifts will be able to get a better handle on the situation as the event becomes closer in time. Cooler northerly flow will fill in behind the front.

AVIATION. Breezy trade winds will carry in clouds and showers into tonight bringing tempo MVFR/isolated IFR conditions along windward slopes. AIRMET Sierra is in effect for tempo mountain obscuration is in effect for windward sides of Big Island, Maui, Molokai, Oahu and Kauai. Fewer clouds and showers are expected by Thursday.

AIRMET Tango remains in effect for low-level mechanical turbulence leeward of all islands 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 is in effect through early Friday morning. A High Surf Advisory (HSA) for exposed east facing shores is in effect through tomorrow afternoon. This HSA may extend into Friday due to continued strong trade winds.

The current small northwest swell will continue to hold through tomorrow with a slight reinforcing bump Thursday night. 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. Forerunners of a small, long- period north- northeast swell will arrive tomorrow and will likely continue through the weekend.

The current small out-of-season southwest swell from the Tasman Sea will slowly drop tonight. Otherwise, expect small background south swells through the weekend into early next week.

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
51205 22 mi35 min 77°F9 ft
51213 31 mi35 min 78°F4 ft
51202 - Mokapu Point, HI (098) 83 mi35 min 77°F10 ft

Wind History for Kahului, Kahului Harbor, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kahului, Kahului Airport, HI14 mi67 minENE 24 G 3510.00 miPartly Cloudy and Windy79°F64°F60%1016.2 hPa

Link to 5 minute data for PHOG

Wind History from HOG (wind in knots)
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1 day agoS8--E13
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NE16NE12E10NE13NE15
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2 days agoE17
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E5E3E5S6SE7E4E11E10SE5S7NE11SE4SE9E14
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Tide / Current Tables for Makena, Maui Island, Hawaii
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Makena
Click for Map
Wed -- 03:09 AM HST     2.23 feet High Tide
Wed -- 06:22 AM HST     Moonset
Wed -- 07:03 AM HST     Sunrise
Wed -- 10:24 AM HST     0.21 feet Low Tide
Wed -- 02:53 PM HST     0.60 feet High Tide
Wed -- 05:31 PM HST     Moonrise
Wed -- 06:14 PM HST     Sunset
Wed -- 08:17 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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1.31.82.12.22.21.91.510.60.40.20.20.30.50.60.60.50.40.2-0-0.1-0.10.10.5

Tide / Current Tables for Kihei, Maui (Hawaii) (2)
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Kihei
Click for Map
Wed -- 03:40 AM HST     2.63 feet High Tide
Wed -- 06:22 AM HST     Moonset
Wed -- 07:03 AM HST     Sunrise
Wed -- 10:34 AM HST     0.21 feet Low Tide
Wed -- 03:24 PM HST     1.00 feet High Tide
Wed -- 05:31 PM HST     Moonrise
Wed -- 06:13 PM HST     Sunset
Wed -- 08:27 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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1.31.92.32.62.62.41.91.40.90.50.20.20.40.60.9110.80.40.1-0.1-0.10.10.5

Weather Map
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GEOS Local Image of Hawaii    EDIT
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.