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Marine Weather and Tides Urban Honolulu, 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 6:23AM

Sunset 6:47PM

Tuesday March 31, 2020 10:10 AM HST (20:10 UTC)

Moonrise 11:37AM

Moonset 12:29AM

Illumination 53%

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 311332 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 332 AM HST Tue Mar 31 2020

SYNOPSIS. Moderate trade winds will decrease by Wednesday. Showers will increase today and Wednesday, mainly over windward areas, switching focus to interior and upslope areas in the afternoons by the end of the week.

DISCUSSION. Moderate trades due to a high northeast of the main Hawaiian Islands will give way to lighter winds through the week. A front to the northwest of the islands will move to the east, disrupting trade wind flow by Wednesday. The surface ridge ahead of this front will likely be pushed across the islands by the end of the week.

Through Wednesday, winds will be mostly out of the east, keeping showers focused over windward areas. An increase in low level moisture at this time will fuel additional shower activity. A weak upper trough approaching from the northwest will increase instability across the region, and a slight chance of thunderstorms exists tonight through Wednesday. Kauai received a lot of rain recently, and additional rain there could lead to minor flooding. A Flash Flood Watch may be needed for that island and this could be issued later today if conditions warrant.

Winds will decrease for the second half of the week, which will allow development of land and sea breezes. Clouds and showers would then focus over interior and upslope areas during the afternoon hours. Another low and associated upper trough approaching from the northwest this weekend could bring another round of moisture to the islands, but it is too early to determine details.

AVIATION. An upper low drifting in from the west will keep unsettled weather in the forecast for the next 24 hours with periods of showers and brief MVFR conditions. Lighter winds over the next few days will result in land and sea breezes developing along more sheltered west slopes of each island. An upper level jet stream will keep cirrus clouds over the state along with tempo moderate turbulence aloft.

AIRMET SIERRA in effect for tempo mountain obscuration over north through east sections of Kauai and Oahu this morning. This AIRMET will decrease in coverage later this morning.

AIRMET TANGO remains in effect for moderate turbulence aloft between FL250 and FL350 due to an upper level jet over the islands. This AIRMET will continue through the morning hours.

MARINE. Moderate to fresh easterly trades associated with high pressure northeast of the state will trend down today through midweek. Light and variable winds will result Wednesday through the second half of the week as a broad trough and an upper disturbance move over the islands. This pattern will bring another round of heavy showers and a few thunderstorms over portions of the area by Wednesday. The trough will lift northward and away from the area as a cold front approaches and stalls to the west over the upcoming weekend. Prevailing background winds will become southeasterly by Thursday, then continue into the weekend.

Surf along north and west facing shores will trend up today through Wednesday as a small, medium-period northwest swell builds down the island chain. Guidance shows low pressure forming south of the Aleutians, near the Date Line, tonight, then dropping southward Wednesday through Thursday to an area around 1000 nautical miles northwest of the state. North-northwest winds focused at the islands within the 320-340 directional bands will near, if not reach gale-force levels. Seas are forecast to climb into the 20-25 ft range within this area. Although most of this energy may end up missing the islands to the west, a moderate, medium-period north-northwest swell will remain a possibility Friday night through Saturday. A gradual downward trend is expected Sunday through Monday.

Surf along south facing shores may trend up by Wednesday as a small, long-period south-southeast swell builds. Otherwise, background southerly swells should be enough to keep the surf from going flat later in the week through the upcoming weekend.

Surf along east facing shores will remain up through midweek, despite the trades relaxing locally. Heights should trend down by the end of the week and upcoming weekend as the upstream fetch relaxes.

HFO WATCHES/WARNINGS/ADVISORIES. None.



DISCUSSION . Powell AVIATION . Bohlin MARINE . Gibbs

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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	70 min	E 2.9 G 6	75°F	76°F		1017.3 hPa (+1.3)
51211	4 mi	70 min			76°F	3 ft
MOKH1 - 1612480 - Mokuoloe, HI	11 mi	94 min	ENE 4.1 G 8.9	75°F	75°F		1017.4 hPa
51210	14 mi	40 min			75°F	6 ft
51212	14 mi	40 min			76°F	3 ft
51207	15 mi	40 min			75°F	5 ft
51201 - Waimea Bay, HI (106)	29 mi	40 min			75°F	4 ft

Wind History for Honolulu, HI

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

10 AM

11 AM

12 PM

1 PM

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7 PM

8 PM

9 PM

10 PM

11 PM

12 AM

1 AM

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7 AM

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9 AM

Last 24hr

E6 G11

SE7 G13

E4 G11

E6 G11

E3 G9

NE3 G9

NE6 G10

E5 G8

E3 G6

NE4 G7

E4 G8

NE4 G8

E2 G6

E2 G9

NE2

NE4 G7

E3 G8

NE2 G5

SW1

NE1

E1

N1

NE2

E3 G6

1 day ago

NE5 G14

NE4 G17

NE9 G16

NE10 G14

E7 G12

E4 G11

SE7 G12

NE6 G10

E4 G8

E6 G10

NE4 G10

NE3

NE3 G7

NE4 G10

E2 G5

E3 G6

NE4

NE3 G7

NE4

NE2 G5

NE3 G8

NE2 G6

NE3

E3 G7

2 days ago

E3 G11

E8 G15

E6 G12

E7 G16

E6 G14

E9 G16

NE6 G13

NE6 G10

E2 G8

NE7 G14

E5 G10

NE5 G8

NE4 G11

NE4 G8

NE5 G11

NE4 G9

E3

NE4 G7

E3 G8

NE4

NE3

NE2 G7

NE4

NE6 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	17 min	ENE 7	10.00 mi	Overcast	75°F	64°F	69%	1016.9 hPa
Oahu, Kalaeloa Airport, HI	10 mi	77 min	Var 3	10.00 mi	Fair	76°F	64°F	69%	1018.3 hPa
Kaneohe, Marine Corps Air Station, HI	12 mi	73 min	E 7	10.00 mi	Mostly Cloudy	79°F	64°F	62%	1016.4 hPa
Wheeler Air Force Base / Oahu, HI	15 mi	74 min	N 0	10.00 mi	A Few Clouds	71°F	65°F	82%	1016.4 hPa

Link to 5 minute data for PHNL

Wind History from HNL (wind in knots)

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Last 24hr

NE12

E13

E13

NE13

E15

NE11

NE13

E13

E10

E12

E8

NE9

E9

NE7

NE7

E11

E8

N4

E13

E9

Calm

E9

E4

E7

1 day ago

NE14 G25

E12 G20

E15

NE12 G20

E17 G24

E16 G24

E13

E15

E11

E12

E9

NE9

E10

NE12

NE9

E7

E10

E8

E9

E9

E10

NE9

E12

E13 G19

2 days ago

E7

E16

NE13 G21

NE15 G20

NE11 G19

E13 G22

NE15

E11

E13

E13

E10

E8

E6

E8

E7

E9

NE4

E5

E8

N4

NE5

4

E9

NE9

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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 (16,3,4,5)

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Ground Weather Radar Station Molokai, HI

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