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Marine Weather and Tides Holualoa, 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 5:44AM

Sunset 7:04PM

Thursday July 2, 2020 11:53 AM HST (21:53 UTC)

Moonrise 5:06PM

Moonset 3:33AM

Illumination 92%

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 Holualoa, HI

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Area Discussion for -

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FXHW60 PHFO 021958 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 958 AM HST Thu Jul 2 2020

SYNOPSIS. Light to moderate trade winds will prevail through the holiday weekend, then strengthen early next week. Clouds and brief showers will favor windward areas through the period, but an area of increased moisture moving across the islands Friday through Saturday night could potentially bring a few showers to leeward areas as well.

DISCUSSION. Trade winds will persist through the forecast period, trending down in the short term, then remaining light to moderate through the holiday weekend as a surface trough moves from E to W across the chain. Breezy to locally windy trades are expected by Tuesday as the trough moves W of the area, and high pressure to the N strengthens.

Overall, the trade winds have remained mostly dry over the past day or so, but Oahu has received the bulk of the random showery low clouds embedded in the trade flow, but 24-hour rainfall totals are all below 1/4 inch. Morning satellite images show the low-level flow near the islands has backed to the NE since yesterday, due to the approach of a low-level (1000-700 mb) trough about 275 miles E of the Big Island. Although significant changes are not expected to the trade wind supporting high to the distant NNE through the weekend, the passage of the trough across the islands will modulate wind speed and direction. These slight changes can have profound implications for the distribution of clouds and showers, but the general expectation is that they will continue to favor windward areas.

As the trough moves across (and W of) the islands, the low-level flow will moisten and veer to the E/SE and weaken Friday, persisting into Saturday. This places the smaller islands in the partial wind "shadow" of the Big Island and Maui, which can lead to shower- producing mesoscale eddies that are near impossible to forecast with any lead time/skill. Also these diminished winds will likely allow afternoon leeward sea breezes to develop, leading to some cloud buildups that could also potentially drop a few showers. With PWAT increasing to near 1.7" and the inversion height rising to near 12 thousand feet, showers are expected to increase in coverage and intensity.

More typical trade wind weather should resume Sunday through the middle of next week, with brief, less intense showers favoring windward and mauka areas. A stray shower will reach leeward sections from time to time, especially with the stronger trades expected from Tuesday onward.

AVIATION. High pressure far north of the state will allow for moderate trades to continue today, though a slight downward trend is expected over the next day or so. Areas over and south through west of the mountains could still experience periods of low-level turbulence today, so AIRMET TANGO remains in effect for areas below 7000 feet. However, if winds decrease earlier, this AIRMET may be canceled later today.

Scattered showers riding in on the trade wind flow will affect mainly windward coasts and slopes, causing brief periods of MVFR conditions, but not widespread enough for extensive mountain obscuration.

MARINE. High pressure north of the state will maintain moderate to locally fresh trades through tonight. Trade winds will begin to decrease on Friday and will remain at light to moderate levels through Monday. Winds are expected to strengthen to locally strong speeds next week Tuesday as the high strengthens north of the state.

A new south-southwest swell is starting to fill in this morning across the state. Surf along south facing shores should build through the day today and peak this afternoon or evening time frame just below advisory thresholds. This swell will gradually lower Friday through the weekend. Otherwise, a mix of small background swells from the south- southeast and south-southwest is expected through the middle of next week.

Surf along east facing shores will be decreasing Friday through the weekend as the trades weaken. Surf along north facing shores will remain nearly flat with mainly background trade wind swell.

HFO WATCHES/WARNINGS/ADVISORIES. None.



DISCUSSION . Birchard AVIATION . TS MARINE . Kino

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
KWHH1	28 mi	59 min	WSW 8.9 G 11	79°F	81°F		1014.4 hPa
ILOH1 - 1617760 - Hilo, HI	50 mi	59 min	NE 5.1 G 7	77°F	80°F		1014.8 hPa
KLIH1 - 1615680 - Kahului Bay, Maui, HI	90 mi	59 min	NE 13 G 18	78°F	81°F		1016.1 hPa

Wind History for Kawaihae, HI

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

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Last 24hr

SW7

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NE1

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SE6 G10

NE2 G5

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N1 G6

W6

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W11 G14

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1 day ago

W7

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NW1

NE1

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W6 G10

N2 G5

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2 days ago

W4

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NE4

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NE3

NE4

W4

W4

W6

W5

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Kailua / Kona, Keahole Airport, HI	0 mi	60 min	SW 8	10.00 mi	Partly Cloudy	84°F	69°F	61%	1014.5 hPa

Link to 5 minute data for PHKO

Wind History from HKO (wind in knots)

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S10

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NE11 G21

N10

NE18 G25

N10 G18

NE15 G20

Calm

SE5

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SE10

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1 day ago

W8

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E13

N15

S3

N6

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2 days ago

SW10

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Calm

N4

N5

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NE11

NE11

SW10

SW9

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Tide / Current Tables for Kailua Kona, Big Island, Hawaii

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Tide / Current Tables for Kawaihae, Big 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 (17,4,5,8)

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Ground Weather Radar Station Kohala, HI

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