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Marine Weather and Tides Kapalua, 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 6:10AM

Sunset 6:44PM

Thursday April 9, 2020 5:31 PM HST (03:31 UTC)

Moonrise 8:55PM

Moonset 7:42AM

Illumination 95%

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 Kapalua, HI

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Area Discussion for -

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FXHW60 PHFO 100128 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 328 PM HST Thu Apr 9 2020

SYNOPSIS. Light and variable winds will persist through Friday, with clouds and showers over the islands most likely in the afternoon and evening. An increase in west to southwest winds is expected Friday into Saturday as a front approaches from the northwest. The front will bring a wind shift to the north, and a few showers, as it moves down the island chain Saturday night and Sunday. Light to moderate trade winds will begin to return late Sunday and continue through much of next week.

DISCUSSION. Currently at the surface, high pressure systems are located far to the west and northeast of the islands, with an area of low pressure well to the north of the state. Closer to home, the remnant moisture associated with a dissipated frontal boundary resides over the eastern islands. The resulting pressure gradient remains quite weak, with sea breezes in place state wide. Visible satellite imagery shows partly to mostly cloudy conditions, with cloud cover most prevalent over windward areas. Radar imagery shows scattered showers over windward areas, with mainly rain free conditions over leeward locales at the moment. Main short term concern revolves around rain chances the next few days.

A light wind regime is expected to remain in place tonight, with daytime sea breezes giving way to overnight land breezes. A cold front will approach from the northwest Friday through Saturday, bringing an increase in west to southwest winds. The front will slide southeastward across the island chain late Saturday through Sunday, with moderate north winds filling in behind the front Saturday night and shifting around to northeasterly trades on Sunday. High pressure will slide by to the north of the islands Sunday night and Monday, with light to moderate trades prevailing. The trades are expected to ease again Monday night through Tuesday night as surface troughing develops over the islands. Moderate trades are then expected to return Wednesday and continue through late next week.

As for weather details, a sea/land breeze pattern is expected to continue through Friday, with showers favoring interior mauka areas during the afternoon/evening hours and locations near the coast at night and during the morning hours. An approaching shortwave trough may de-stabilize things enough for a thunderstorm to pop over the Big Island Friday afternoon, so will mention a slight chance of thunderstorms here. Shower coverage should increase a bit Friday night and Saturday in the low level convergent flow ahead of the approaching front, with assistance from shortwave energy moving overhead. Showers will favor south and southwest facing slopes at night and during the morning hours and interior/mauka locations during the afternoon. A few showers will accompany the front as it slides southeastward through the islands Saturday night and Sunday, but no significant rainfall is expected. We should begin to see an increase in trade wind showers Sunday night and Monday, favoring the typical windward areas. Shower coverage and intensity may then increase Monday night through Tuesday night as surface troughing develops over the islands and some shortwave energy moves overhead. A more typical trade wind pattern should then return by the middle and latter part of next week.

AVIATION. Sea breezes did not disappoint and have delivered an uptick in cloud cover and showers over the Aloha State this afternoon. The Big Island is seeing the majority of the shower activity, with tops between 10,000-15,000 feet. MVFR conditions are likely with any of this shower activity statewide through the evening, though VFR will prevail.

Land breezes will take hold after sunset, allowing for clearing over interior sections of the islands. Friday looks to be similar to today with the sea and land breeze pattern continuing, although an approaching upper level trough may fuel some heavier showers by Friday night.

No AIRMETs are in effect or anticipated at this time.

MARINE. A remnant frontal boundary lies near Maui while the west end of a ridge of high pressure lies just southeast of the Big Island. The overall wind flow is light with slightly stronger south and southwest winds east of the boundary, mainly over the waters around the Big Island. Sea breezes nearshore will transition to land breezes overnight.

Winds will remain light Friday and Friday night, favoring a south to southwest direction, as another weak front approaches the area from the northwest. Low level winds will become more westerly on Saturday as the front nears the state. Guidance indicates a weak frontal boundary will move across the area Saturday night and Sunday with north to northeast winds filling in behind it. An area of high pressure will be passing by north of the area Sunday night through Monday night with moderate trade winds returning.

A small, short period northwest swell will continue to fill in tonight, peak on Friday, then lower gradually Saturday and Sunday. A series of very small, short period north swells will move through the area Saturday through Tuesday. A larger northwest swell is expected to arrive Tuesday night, peak Wednesday and Wednesday night, then lower gradually on Thursday. Surf heights may reach advisory levels during the peak of this swell. A series of small south swells will be moving through the area through the weekend and on through the middle of next week. Peak surf heights will likely be on Saturday when the largest of these swells arrive. Due to the lack of trade winds, surf will remain small along east facing shores on into early next week. With the expected uptick in trades around Tuesday and Wednesday, surf heights are expected to gradually pick up at that time.

HFO WATCHES/WARNINGS/ADVISORIES. None.



DISCUSSION . Jelsema AVIATION . Dye MARINE . Burke

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
51205	11 mi	31 min			77°F	5 ft
KLIH1 - 1615680 - Kahului Bay, Maui, HI	13 mi	43 min	NNE 8.9 G 9.9	76°F	78°F		1013.5 hPa
51213	27 mi	31 min			78°F	3 ft
51202 - Mokapu Point, HI (098)	61 mi	31 min			78°F	4 ft

Wind History for Kahului, Kahului Harbor, HI

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

6 PM

7 PM

8 PM

9 PM

10 PM

11 PM

12 AM

1 AM

2 AM

3 AM

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

5 PM

Last 24hr

N8 G11

N9

N8

N9

N10

N4

W2

SW3

S4

SE1

SW3

SW8

W5 G8

W3

NE10

NE4 G7

N6

NE10

NE10

N11 G14

NE12

N9 G14

NE9

N9

1 day ago

NE4

NE4

NW4

W4

SE1

S2

S2

S3

S2

S3

S1

S2

S1

S3

S3

NE4

N5

NE6

NE7

NE7

N8

N8

N9

N8

2 days ago

NW4 G10

E4

NE9

SE4 G8

SE1

S3

S4 G8

SW4 G7

W4

NW6

SE2 G6

SW4

SW7 G12

S9 G13

NW2

SW5 G8

N7

N7

S7 G11

S6 G10

E9 G14

NE10

NE10

NE6 G9

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Lahaina - West Maui, HI	1 mi	46 min	W 8	15.00 mi	A Few Clouds	81°F	64°F	58%	1013.9 hPa
Kahului, Kahului Airport, HI	14 mi	37 min	N 10	10.00 mi	Partly Cloudy	80°F	68°F	67%	1014 hPa
Lanai City, Lanai Airport, HI	23 mi	35 min	WNW 7	10.00 mi	Fair	74°F	64°F	71%	1013.8 hPa

Link to 5 minute data for PHJH

Wind History from HJH (wind in knots)

	6 PM	7 PM	8 PM	9 PM	10 PM	11 PM	12 AM	1 AM	2 AM	3 AM	4 AM	5 AM	6 AM	7 AM	8 AM	9 AM	10 AM	11 AM	12 PM	1 PM	2 PM	3 PM	4 PM	5 PM
Last 24hr	4	--	--	--	--	--	--	--	--	--	--	--	--	--	4	--	SW8	SW4	SW3	W4	W5	--	SW5	W8
1 day ago	5	--	--	--	--	--	--	--	--	--	--	--	--	SE8	5	4	4	6	4	W8	5	6	W10	5
2 days ago	4	--	--	--	--	--	--	--	--	--	--	--	--	6	--	S10	S11	SW10	SW8	W8	SW8	--	SW8	4

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Tide / Current Tables for Pukoo Harbor, Molokai Island, Hawaii

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Tide / Current Tables for Lahaina, Maui 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 (23,6,7,8)

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Ground Weather Radar Station Molokai, HI

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