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Marine Weather and Tides Haena, 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.

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Sunrise 6:09AM

Sunset 7:04PM

Friday August 14, 2020 8:20 AM HST (18:20 UTC)

Moonrise 1:59AM

Moonset 3:49PM

Illumination 18%

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.

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7 Day Forecast for Marine Location Near Haena, HI

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Area Discussion for -

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FXHW60 PHFO 141319 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 319 AM HST Fri Aug 14 2020

SYNOPSIS. A ridge of high pressure north of the state will maintain moderate trade winds through early next week. Some day to day fluctuations are expected, with a slight increase in trade wind speeds expected tonight and Saturday. Otherwise, typical trade wind weather will prevail with showers favoring windward and mauka areas, especially during the early morning and overnight hours. A trough of low pressure aloft could bring an increase in shower coverage and intensity Tuesday through late next week.

DISCUSSION. Currently at the surface, a 1029 mb high is centered around 1550 miles north-northeast of Honolulu, and is driving moderate trade winds across the island chain early this morning. Infrared satellite imagery shows clear to partly cloudy skies in most areas, with a bit more cloud cover in some windward locales. Radar imagery showers scattered showers moving into windward slopes and coasts, with a stray shower spreading leeward from time to time. Main short term concern revolves around rain chances and trade wind trends during the next couple days.

High pressure north of the state will keep moderate trade winds in place today. The trades are then expected to increase slightly tonight and Saturday as the gradient tightens in response to a broad area of low pressure passing by to the south of the state. The trades should trend back to moderate levels Sunday through Tuesday as the ridge north of the islands weakens. The gradient is forecast to relax further Wednesday through late next week, with trades lowering into the light to moderate range and allowing for sea breezes and land breezes in the more sheltered leeward areas.

As for weather details, fairly typical trade wind conditions will continue today through Monday with bands of moisture moving through the islands bringing scattered windward showers and the occasional leeward spillover. Showers will be most prevalent during the night and early morning hours during this time frame. Troughing aloft is forecast to build southward over the state Tuesday through late next week, and this should elevate inversion heights and bring an increase in shower coverage and intensity statewide. Showers will continue to favor windward slopes and coasts during this time, with an increase in leeward and interior shower activity during the afternoon and evening hours.

AVIATION. A high pressure ridge north of the Hawaiian Islands will keep moderate trade winds in the forecast today increasing into the moderate to breezy range later tonight into Saturday. Passing showers may produce brief MVFR conditions mainly over windward areas with scattered showers today becoming more numerous showers in the overnight to early morning time periods.

No AIRMETs are in effect. AIRMET Sierra for Tempo Mountain Obscuration may be needed by the overnight time period over the north and east slopes of the Big Island and Maui.

MARINE. Moderate to fresh easterly trades will continue today, then briefly increase into the fresh to strong category tonight through late Saturday as the pressure gradient tightens over the islands in response to low pressure passing far to the south. This will likely translate to a Small Craft Advisory being issued for the typical windier waters between Maui County and the Big Island by or come this afternoon. Guidance shows the gradient quickly relaxing Sunday into early next week as this area of low pressure to the south continues westward and a weakness in the subtropical ridge forms far north of the state as a backdoor front drops southward toward 30N.

Surf along east facing shores will hold steady into the weekend near or just under the advisory level of 8 ft (faces) as a moderate northeast swell moves through from a batch of strong breezes that setup within the 040-050 degree band off the west coast earlier this week. Surf will gradually ease Sunday into early next week as the winds relax locally as the swell drops. Although confidence remains low, a small easterly swell will remain possible from distant Elida in the eastern Pacific over the weekend, especially for the eastern end of the state.

Surf along south facing shores will remain small through Saturday, then gradually trend up Sunday into early next week as a small, south-southwest swell from recent activity near New Zealand arrives. The PacIOOS nearshore Pago Pago buoy reflected this small source moving through over the past 36-Hrs. WAVEWATCH III guidance shows a reinforcement out of the same area Monday night through Tuesday, which should hold through midweek before easing. For the long range, another similar pulse will become a possibility through the third week of the month as low pressure systems continue to move through Hawaii's swell window southeast of New Zealand.

Surf along north facing shores will remain near the summertime average through the period, except for locations exposed to the previously discussed northeast swell.

HFO WATCHES/WARNINGS/ADVISORIES. None.



DISCUSSION . Jelsema AVIATION . Bohlin MARINE . Gibbs

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Weather Reporting Stations

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Wind History for Nawiliwili, HI

(wind in knots)    EDIT      (on/off)   Help

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NE11 G15

NE11 G15

NE11 G16

NE11 G14

NE12 G15

NE11 G15

NE8 G14

NE10 G14

NE11 G17

NE10 G14

NE10 G14

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NE8 G11

NE10

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NE10

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NE7 G10

NE8 G11

NE10 G13

NE6 G9

NE8 G11

NE9

E11

1 day ago

E11 G15

NE9 G14

NE9 G14

NE11

NE11 G15

NE12 G16

NE9 G14

NE9 G12

NE8 G13

NE7 G13

NE11 G14

NE7 G10

NE14 G17

NE7 G11

NE9 G12

NE11

E13 G18

NE9

NE6 G13

NE10 G14

NE6 G10

NE5 G8

SW3

NE10

2 days ago

NE9 G12

NE12 G15

E12 G15

NE12 G15

NE11 G14

NE11 G15

NE9 G15

NE12 G15

NE10

NE9 G13

NE9 G12

NE11

NE10 G14

NE15

NE8 G15

E13 G16

E12

E14 G17

E12 G15

NE10 G13

NE11 G14

NE9

NE10 G14

NE11 G15

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Kekaha, Pacific Missile Test Facility Barking Sands, HI	10 mi	25 min	N 0	10.00 mi	Fair	83°F	69°F	63%	1015.8 hPa
Lihue, Lihue Airport, HI	23 mi	28 min	E 11	10.00 mi	Partly Cloudy	81°F	73°F	77%	1016.2 hPa

Link to 5 minute data for PHBK

Wind History from HBK (wind in knots)

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SW4

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NE3

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1 day ago

W4

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N5

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NE3

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E3

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Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii

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Tide / Current Tables for Waimea Bay, Kauai Island, Hawaii

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Weather Map

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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

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Wind Forecast for (14,3,4,5)

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Ground Weather Radar Station Kauai, HI

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