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Marine Weather and Tides Hilo, HI Version 3.4

NOTICE 3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone. 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.

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Sunrise 5:53AM

Sunset 7:00PM

Monday July 26, 2021 8:58 PM HST (06:58 UTC)

Moonrise 9:31PM

Moonset 8:30AM

Illumination 91%

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 Hilo, HI

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Area Discussion for -

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FXHW60 PHFO 270634 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 834 PM HST Mon Jul 26 2021

SYNOPSIS. Moderate to breezy easterly trade winds will continue through midweek, then strengthen Thursday through the weekend. Clouds and showers will favor windward and mauka locations, especially overnight through the morning periods. Areas of tropical moisture moving through from east to west may enhance shower coverage and intensity periodically. As the trades increase later in the week, some of these showers may carry over into our dry leeward areas. A return of drier trade wind conditions is anticipated this weekend.

DISCUSSION. Guidance remains persistent and continues to advertise plenty of tropical moisture moving through the islands from east to west through the second half of the week. This moisture combined with an upper trough lurking nearby to the northwest will keep the rainfall chances up, especially for the typical windward and mauka locations each day. Some of the showers may become locally heavy at times, and could spill over into our dry leeward areas later in the week when the trades become locally windy.

For the upcoming weekend, rising upper heights and drier trade wind conditions will limit rainfall chances, even for windward areas.

AVIATION. Moderate to occasionally breezy east northeasterly trades will push showers across windward coasts and slopes through the forecast period, especially along northeast portions of the Big Island. Periods of MVFR ceilings and visibility will likely accompany this activity. Isolated showers are expected elsewhere. Expect VFR to dominate at most terminals.

AIRMET TANGO remains in effect for areas below 8000 feet over and immediately south thru west of mountains for tempo moderate turbulence.

AIRMET SIERRA remains in effect for north thru east sections of the Big Island above 2000 feet for mountain obscuration from clouds and showers and is likely to continue through tonight. This AIRMET may have to be expanded to include windward portions of Maui later tonight.

MARINE. A high pressure system passing slowly north of the region will keep fresh to locally strong trade winds in the forecast through at least early Tuesday morning. A Small Craft Advisory (SCA) will remain in effect for the typically windier waters and channels near Maui County and the Big Island. This SCA may continue for the same areas through Wednesday.

Moderate choppy surf along east facing shores will slowly trend a bit lower tonight through Wednesday due to a slight weakening in the trades near and upstream of the islands. A slight increase in the trade wind swell and surf along east facing shores will develop by Friday.

A mix of small south swells will keep surf small along exposed south shores into the weekend.

A small west-northwest swell, from tropical cyclone activity in the NW Pacific, may arrive along some exposed west and north facing shores starting on Thursday or Friday. Confidence about the timing and the size of these swells remains low at this time.

HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 AM HST Tuesday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . Gibbs AVIATION . Powell MARINE . Bohlin

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Weather Reporting Stations

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On 03/09/2021 the NDBC primary processing servers were shut off due to a facilities issue. Station pages on the NDBC website are not updating and there is no ETR at this time. We will update this banner as we learn more.

Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
ILOH1 - 1617760 - Hilo, HI	1 mi	65 min	E 8 G 13	74°F	80°F		1016.4 hPa
KWHH1	45 mi	65 min	SW 1 G 4.1	82°F	84°F		1014.7 hPa

Wind History for Hilo, Hilo Bay, Kuhio Bay, HI

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Last 24hr

E3 G6

E3 G6

E3

SE3 G7

SW1

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NW1

W3

W3 G6

S2

SW1 G4

SW1

NW4

W1

NE7 G11

NE8

E4 G12

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NE6 G9

NE8 G11

E6 G9

E5 G10

E3 G8

E8 G12

1 day ago

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W3

SW2

SW1 G4

W1

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W3

S2 G6

SW1 G4

SW2

S1

W1

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NE3 G6

E8 G13

NE6 G9

E4 G7

SE3 G7

SE3 G7

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E2 G5

E3 G7

2 days ago

SE2

S1

SW1

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NW2

N3

NE6

NE8

N4

SE4 G7

N5

N3

SE2

E5

SE1

S1

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Hilo, Hilo International Airport, HI	1 mi	66 min	E 12	9.00 mi	Overcast	74°F	71°F	91%	1017.4 hPa

Link to 5 minute data for PHTO

Wind History from HTO (wind in knots)

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Last 24hr

E6

Calm

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E9

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1 day ago

W4

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N4

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3

NE10

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E12 G15

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2 days ago

3

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E5

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SW4

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Calm

Calm

NE6

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E11

SE8

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E4

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Calm

S3

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Tide / Current Tables for Hilo, Hawaii Island, Hawaii

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Tide / Current Tables for Kawaihae, Big Island, Hawaii (2)

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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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