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Marine Weather and Tides Koloa, 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 5:47AM

Sunset 7:13PM

Thursday June 4, 2020 4:53 AM HST (14:53 UTC)

Moonrise 6:36PM

Moonset 5:03AM

Illumination 98%

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 Koloa, HI

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Area Discussion for -

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FXHW60 PHFO 041327 CCA AFDHFO

Area Forecast Discussion . CORRECTED National Weather Service Honolulu HI 327 AM HST Thu Jun 4 2020

SYNOPSIS. Breezy trade winds will continue through Friday, then gradually ease over the weekend into early next week. Clouds and showers will favor windward and mountain areas each day, especially through the overnight and early morning periods as pockets of moisture move through. Drier air moving in from east to west Friday will limit shower coverage through the weekend.

DISCUSSION. Latest surface analysis and satellite imagery showed a ridge anchored north of the islands and patchy low-level clouds approaching and moving through from east to west. Trades have trended up into the breezy category due to the pressure gradient tightening over the region in the past 24 hours. Satellite- estimated precipitable water (PW) imagery depicted a decent-sized area of higher than normal moisture lingering in the area for this time of year with values ranging from 1.3 to 1.7 inches (highest around Kauai). A combination of this low-level moisture and trade winds will continue to support scattered shower coverage over windward and mountain locations, mostly overnight through the early morning hours. Although mostly dry conditions will prevail over leeward locations, a few brief showers spilling over can't be ruled out. Rainfall accumulations should remain light due to the mid- to upper-level ridging and dry air in place.

Guidance remains in decent agreement and supports drier air moving into the area late Friday with PWs dipping back to around an inch and dewpoints lowering slightly - which should hold through the weekend. Trade winds are forecast to gradually trend down over the weekend into early next week as a weakness develops within the subtropical ridge in response to a front passing far to the north.

AVIATION. Moderate to fresh trade winds will continue across the state through the weekend. AIRMET Tango is posted for tempo moderate turbulence leeward of all islands due to the breezy winds and may continue over the next couple of days. Scattered low clouds and showers will move in with the trade wind flow and may bring brief mountain obscurations to over windward slopes from time to time. More extensive low clouds are currently anchored across both windward and Kona/leeward slopes this morning, and AIRMET Sierra has been posted for mountain obscurations on the Big Island. VFR conditions will prevail elsewhere around the state.

MARINE. A High Surf Advisory (HSA) for S facing shores of all islands remains in effect today, as a significant long-period S gradually diminishes from its recent peak. After this swell diminishes, surf is expected to be below advisory-levels along all shores into the middle of next week. However, surf will not be flat as a smaller long-period S swell is expected over the weekend, with another maybe early next week. A small, short-period NW swell is expected to diminish today, and N shore surf will soon be flat. Minimal E shore surf is expected to trend up slightly Friday as the upstream fetch of trade winds grows.

A surface ridge N of the islands will drive fresh to locally strong trades through Friday, with model guidance indicating some strengthening of the winds by this afternoon. A Small Craft Advisory (SCA) for the windier waters around Maui and the Big Island through Friday has been expanded to include the Kaiwi channel. While an extension for some zones is possible into the weekend, a front passing well N of the islands is expected to force the ridge southward Sunday/Monday. Winds will veer to the ESE and weaken, most notably over the western end of the state and most leeward waters, while fresh to locally strong E winds may persist around the Big Island and windward Maui.

HFO WATCHES/WARNINGS/ADVISORIES. High Surf Advisory until 6 PM HST this evening for Niihau-Kauai Windward-Kauai Leeward-Oahu South Shore-Waianae Coast-Molokai- Lanai Makai-Kahoolawe-Maui Leeward West-Maui Central Valley- Windward Haleakala-Leeward Haleakala-Kona-South Big Island-Big Island North and East.

Small Craft Advisory until 6 PM HST Friday for Kaiwi Channel- Maalaea Bay-Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . Gibbs AVIATION . Foster MARINE . Birchard

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
NWWH1 - 1611400 - Nawiliwili, HI	8 mi	54 min	ENE 8.9 G 11	77°F	84°F		1016.6 hPa
51208	27 mi	54 min			79°F	4 ft
51201 - Waimea Bay, HI (106)	74 mi	54 min			78°F	4 ft

Wind History for Nawiliwili, HI

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

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Last 24hr

NW3

W2

NE6 G9

NE7 G10

NE7 G12

NE9 G12

NE9 G12

NE10 G13

NE9 G13

NE10 G13

NE9 G13

NE9 G14

NE9 G12

NE9

NE7 G10

NE7 G11

NE10 G13

NE8 G11

E9

NE7

NE11 G15

NE12 G16

NE9 G12

E9

1 day ago

NW2

W3

W2

W3

NE5

NE6 G10

NE8 G12

NE7 G10

NE8 G11

NE11 G15

NE10 G14

NE8 G12

NE7 G12

NE8 G12

NE8

NE5 G8

NE9 G13

NE9

NE8 G11

NE6 G10

NE8 G11

NE6 G9

NE5

NE4 G7

2 days ago

SW4

W4

SW3

NE5 G10

NE8

NE8

NE7 G13

NE7 G12

N10

NE8 G11

NE9 G14

N11 G15

N10 G13

NE10 G13

N8 G12

N3

NW3

W4

W3

SW4

SW4

SW3

W4

W3

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Lihue, Lihue Airport, HI	9 mi	61 min	E 10	10.00 mi	Overcast	75°F	73°F	94%	1016.4 hPa
Kekaha, Pacific Missile Test Facility Barking Sands, HI	20 mi	58 min	ESE 4	10.00 mi	Fair	73°F	66°F	79%	1015.8 hPa

Link to 5 minute data for PHLI

Wind History from HLI (wind in knots)

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NE6

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1 day ago

Calm

Calm

NW3

NE7

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2 days ago

NW6

N6

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NE13

NE12

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N13

N4

N8

N5

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N3

NE8

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NE6

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Tide / Current Tables for Port Allen, Hanapepe Bay, Kauai Island, Hawaii

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Tide / Current Tables for Nawiliwili, Hawaii (2)

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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 (10,2,3,4)

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Ground Weather Radar Station Kauai, HI

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