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Marine Weather and Tides Urban Honolulu, HI Version 3.4

NOTICE 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. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 6:58AM

Sunset 5:52PM

Friday December 13, 2019 3:24 PM HST (01:24 UTC)

Moonrise 7:38PM

Moonset 8:28AM

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 Urban Honolulu, HI

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Area Discussion for -

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FXHW60 PHFO 132302 AAA AFDHFO

Area Forecast Discussion . UPDATED National Weather Service Honolulu HI 102 PM HST Fri Dec 13 2019

UPDATE. Updated aviation section.

SYNOPSIS. Breezy to locally windy trade winds are expected today as strong high pressure passes well to our north. The trades will bring rainfall to mostly windward and mauka locales, with a few showers briefly reaching leeward. The high level jet stream will bring increasing high clouds later today into tonight. Trade winds will decrease during the weekend as the high moves away. A dry, stable airmass will take control of our weather this weekend and the first half of next week, with few showers and considerable sunshine. A new high passing far to the north will return locally windy trades Monday and Tuesday.

DISCUSSION. The stationary front that was just NW of Kauai is beginning to retreat westward away from the islands as a surface trough. This is allowing breezy to locally windy trades to return as a surface high passes about 900 miles N of the islands today. An upper trough just W of the islands has been helping to reinforce the front, and enhance incoming trade wind showers. The upper trough is expected to weaken as we head into the weekend, which will result in fewer and less intense showers. High level moisture riding in on the subtropical jet will continue to bring high clouds at times, and these will increase tonight into Saturday before pushing away later Saturday as the jet shifts to the SE of the islands.

The surface high to the N will continue eastward into the weekend, so trade wind speeds on Saturday will be a notch below today's levels. Winds will even be a notch lower on Sunday as a col between two highs passes N of the islands. The next surface high will pass well N of the islands on Monday, returning breezy to locally windy trade wind speeds for Mon and Tue. The winds should ease Wed, but may increase again on Thu as the next in the series of highs passing to the N approaches our longitude.

Trade wind showers are expected to continue to decrease as we head into the weekend, with decreasing precipitable water and warming mid-level temperatures. A strong 700 mb high just to our N will bring warm mid-level air early next week. This, combined with a lack of moisture, should yield a significant minimum in trade wind showers Tue and Wed, with nice fine weather expected. Showers may increase again Thu as the mid-level high moves away and the airmass becomes a bit more unstable again.

AVIATION. An area of enhanced moisture continues to reside over the islands this morning early this afternoon in a association with a dissipating front. Greatest coverage of showers will remain over mainly interior/windward areas of Oahu and Kauai as well as windward areas of the remaining islands. Brief MVFR conditions and mountain obscuration may occur due to the passing showers.

Surface high pressure to the northeast of the state will allow for moderate to occasionally breezy easterly trades to persist through the period.

AIRMET TANGO has been issued for areas below 9000 feet south thru west of mountains on all islands due to tempo moderate turbulence.

MARINE. The current northwest swell will continue to subside from west to east over the next few days. The High Surf Advisory remains posted for north and west facing shores of Kauai County, Oahu, and Molokai and north facing shores of Maui. Surf is expected to fall below advisory levels by early tomorrow morning. A short period north-northeast swell will increase surf along exposed east facing shores, mainly on Kauai and Oahu, today and tonight, but should stay just below the advisory levels.

A reinforcing large northwest swell is forecast to build late Sunday into Monday and peak Monday night, possibly near warning levels. This swell should slowly decline Tuesday into Wednesday, but will likely be reinforced by another large northwest swell Wednesday night into Thursday.

A high pressure north of the state will keep moderate to locally strong trade winds over the area through Saturday. The combination of the current northwest swell and the strong trade winds is resulting in a Small Craft Advisory for all coastal waters, except the Maui leeward waters. This Small Craft configuration is expected to be trimmed down to mainly the locally windier waters around the Big Island and Maui County by tomorrow morning as the swell subsides.

A slight decline in trade winds and period without Small Craft conditions is possible Sunday as the current high moves east and a new high builds north. Trade winds should return to moderate to locally strong speeds by early next week and seas will build with the reinforcing northwest swell.

HFO WATCHES/WARNINGS/ADVISORIES. High Surf Advisory until 6 AM HST Saturday for Niihau-Kauai Windward-Kauai Leeward-Waianae Coast-Oahu North Shore-Oahu Koolau-Olomana-Molokai-Maui Windward West-Maui Central Valley- Windward Haleakala.

Small Craft Advisory until 6 AM HST Saturday for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-Kauai Channel- Oahu Windward Waters-Oahu Leeward Waters-Kaiwi Channel-Maui County Windward Waters-Maalaea Bay-Pailolo Channel-Alenuihaha Channel-Big Island Windward Waters-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . R Ballard AVIATION . Thomas MARINE . EATON

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
OOUH1 - 1612340 - Honolulu, HI	1 mi	54 min	ENE 2.9 G 9.9	82°F	81°F		1015.2 hPa
51211	4 mi	54 min			81°F	4 ft
MOKH1 - 1612480 - Mokuoloe, HI	11 mi	48 min	ENE 12 G 19	79°F	80°F		1016.2 hPa
51202 - Mokapu Point, HI (098)	14 mi	54 min			79°F	9 ft
51210	14 mi	54 min			79°F	8 ft
51212	14 mi	54 min			81°F	4 ft
51207	15 mi	54 min			80°F	9 ft
51201 - Waimea Bay, HI (106)	29 mi	48 min			77°F	11 ft

Wind History for Honolulu, HI

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

4 PM

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6 PM

7 PM

8 PM

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11 PM

12 AM

1 AM

2 AM

3 AM

4 AM

5 AM

6 AM

7 AM

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1 PM

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Last 24hr

W8 G11

W4 G8

NE5

SE3 G8

NE4

NW1

NW5

E1

W1 G5

N3 G6

NE2 G6

SE2 G6

E2 G6

SE2 G9

NE2 G7

NE4 G8

E7 G10

NE5 G15

NE9 G15

E8 G16

E8 G12

NE8 G15

NE7 G13

NE3 G19

1 day ago

S6 G10

S4

S3

S1 G4

NE1

NE4 G7

E1

NE2

NE1

E1

--

NW3

NE1

--

E1

S1

--

--

SW4

SW5

SW7

SW5

SW6

SW6

2 days ago

S6 G9

SW5

NE6

NE4

E2

E1

NE2

E1

--

--

NE1

NE1

SE1

N1

E1

E1

--

SW3

W2

SW3 G8

SW2 G7

S6 G10

S7 G11

S4 G10

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Daniel K Inouye International Airport, HI	5 mi	31 min	ENE 12 G 21	10.00 mi	Mostly Cloudy	82°F	68°F	63%	1015.5 hPa
Oahu, Kalaeloa Airport, HI	10 mi	31 min	ENE 10 G 18	10.00 mi	Mostly Cloudy	84°F	69°F	61%	1016.1 hPa
Kaneohe, Marine Corps Air Station, HI	12 mi	71 min	ENE 13	10.00 mi	Mostly Cloudy	81°F	71°F	72%	1015.2 hPa
Wheeler Air Force Base / Oahu, HI	15 mi	28 min	NE 9 G 15	10.00 mi	Overcast	77°F	68°F	76%	1015 hPa

Link to 5 minute data for PHNL

Wind History from HNL (wind in knots)

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Last 24hr

SW8

SW7

Calm

NE8

N5

NE6

NW7

NW4

W4

W7

NW5

N4

Calm

NE11

E7

E12

E13 G22

NE13 G22

NE17 G22

E17 G29

NE17 G24

NE16 G24

NE15 G24

NE12 G21

1 day ago

S8

S5

S3

Calm

3

Calm

Calm

W3

NW4

Calm

NW5

NW3

Calm

N3

Calm

Calm

NE3

NW3

NW3

SW7

S8

S8

S8

SW11

2 days ago

SW5

SW5

W3

W4

N4

Calm

N3

Calm

NW3

3

N4

Calm

Calm

N3

N5

Calm

N6

NW3

S5

E5

SE12

SE11

SE12

SE10

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Tide / Current Tables for Honolulu, Honolulu Harbor, Oahu Island, Hawaii

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Tide / Current Tables for Hanauma Bay, Oahu 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 (20,4,5,8)

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Ground Weather Radar Station Molokai, HI

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