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HSFF 7/7-8/3/18

645 am OBS Wednesday July 18th Powered by Honolulu Surf Film Festival through Aug 3

Clouds & Rain with mod. to fresh to strong gusts ENE trades (clouds keeping winds down) High Surf Adv for East Shores + Small craft adv. for all waters.

SNN BIG PICTURE: Tuesday 7/17. Moderate-High ENE swell + Small SSW. Call 596-SURF: 7a, 12, 3 & 5p recap-forecast.

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North Shore:

Holding the tiny 9sec ENE wind swell wrap. Most spots 0-1' ... tiny peelers breaking on the shallow inside reefs. Laniakea tops it 0-1.5' maybe a weak 2' off-on. Sunset to Rocky Point Flat-1'; Pipe zone 0-inches'; Chuns reef 0-1'; & Ali'i Beach = 0. Better day for diving, paddling; under clouds.
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West:

Holding old SSW. Rising slow on long period SSW. Makaha is 0-1' occ.2 with smooth offshores early. Nice shaped sets at select west spots under mostly clouds.
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Town:

Holding the recent 14sec SSW. A new 20 sec SSW is slowly rising. Surf is just 1-2' mostly occ. 2.5' (maybe 3' later) but very inconsistent and only a few waves per set. Fair cond. with fair form from Kewalos to Courts, Bowls to Kaisers. Threes to Pops-Queens. Public's 1-2'+ under clouds.
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Diamond Head:

Holding the recent 14sec SSW. A new 20 sec SSW starting to show + wind swell mix. Surf is 1-2 occ 3' mostly. Fair shape but chunky, bumpy, squally early side-shore trades; under clouds.
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Sandy's:

Holding the old SSW and rising slow on new SSW & holding 9 sec East trade swell. Surf's got power @ 2-3' even occ 4 combo peaks, plenty sandbar peaks; bumpy with moderate-fresh side-off from Full Pt-1/2 Pt. Pipe-Littles, Cobbles, Middle Peaks-Generals, Gas Chambers all under cloudy skies.
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East Makapu'u:

Up a hair and holding the 9 sec trade wind swell. Makapu'u is 2-4' with the typical onshore chop. Outside left-middle then into the inside sandbar with steep drops into fast, closeout ramp sections. Keiki side up to 3' under clouds and some showers.
Seaspecs April 2018 Matt

Weather

Wednesday
with="64"

Temp
min:
79°F
max: 91°F

Mostly Cloudy

Wind:
23mph ENE

Thursday
with="64"

Temp
min:
78°F
max: 91°F

Partly Cloudy

Wind:
18mph ENE

Friday
with="64"

Temp
min:
78°F
max: 91°F

Partly Cloudy

Wind:
18mph ENE

Saturday
with="64"

Temp
min:
78°F
max: 90°F

Partly Cloudy

Wind:
18mph NE

Sunday
with="64"

Temp
min:
79°F
max: 90°F

Chance of Rain

Wind:
18mph NE

Range:
15-30mph East Trade

Range:
10-25mph ENE Trade

Range:
10-20+mph NE Trade

Range:
10-20mph NE Trade

Range:
10-25mph ENE Trade

North

Wednesday
07/18

Primary

Holding 9s NE
Haw: 1 occ 2
Face: 1-2 occ 3

Secondary

None  
Haw: 0
Face: 0
Fair-Good side-offshore

Thursday
07/19

Primary

Holding 8s NE
Haw: 0-1
Face: 0-1.5

Secondary

Holding 10s NW
Haw: 0-1/2
Face: 0-1
Weak

Friday
07/20

Primary

Dropping 8s NE
Haw: 0-1
Face: 0-1.5

Secondary

Dropping 9s NW
Haw: 0-1/2
Face: 0-1
divin , paddlin

Saturday
07/21

Primary

Holding 8s NE
Haw: 0-1/2
Face: 0-1

Secondary

None  NONE
Haw: 0
Face: 0
Good offshores

Sunday
07/22

Primary

Holding 8s NE
Haw: 0-1/2
Face: 0-1

Secondary

None  NONE
Haw: 0
Face: 0
Good offshores

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West

Wednesday
07/18

Primary

Holding 9s NE
Haw: 0
Face: 0

Secondary

Rising 15s SSW
Haw: 1-2
Face: 1-3
Fair-Good side-offshore
Thursday
07/19

Primary

Holding 15s SSW
Haw: 1-3
Face: 2-5

Secondary

Holding 8s NE
Haw: 0
Face: 0
Side-Offshore
Friday
07/20

Primary

Dropping Slow 16s SSW
Haw: 1-3
Face: 2-5

Secondary

Dropping 8s NE
Haw: 0
Face: 0
Good offshores
Saturday
07/21

Primary

Rising 18s SSW
Haw: 1-2 occ 3
Face: 2-4 occ 5

Secondary

Holding 8s NE
Haw: 0
Face: 0
Good offshores
Sunday
07/22

Primary

Holding 16s SSW
Haw: 1-3
Face: 2-5

Secondary

Holding 8s NE
Haw: 0
Face: 0
Offshore
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South

Wednesday
07/18

Primary

Rising 15s SSW
Haw: 1-2+
Face: 1-3+

Secondary

Rising Slow 22s SSW
Haw: 0-2
Face: 0-3
Fair-Good side-offshore

Thursday
07/19

Primary

Holding 15s SSW
Haw: 2-4
Face: 3-7

Secondary

Rising Slow 18s SSW
Haw: 1-2 occ 3
Face: 2-4 occ 5
Side-Offshore

Friday
07/20

Primary

Dropping Slow 16s SSW
Haw: 2-4
Face: 3-7

Secondary

Holding 14s SSW
Haw: 2-3
Face: 3-5
Good offshores

Saturday
07/21

Primary

Rising 18s SSW
Haw: 2-4 occ +
Face: 3-7 occ +

Secondary

Holding 15s SSW
Haw: 2-3+
Face: 3-5+
Good offshores

Sunday
07/22

Primary

Holding 16s SSW
Haw: 2-4
Face: 3-7

Secondary

Dropping 14s SSW
Haw: 2-3
Face: 3-5
Offshore

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east

Wednesday
07/18

Primary

Holding 9s E
Haw: 2-4
Face: 3-7

Secondary

Dropping 9s NE
Haw: 1-2
Face: 1-3
Onshore

Thursday
07/19

Primary

Dropping Slow 8s ENE
Haw: 2-3+
Face: 3-5+

Secondary

Dropping 9s NE
Haw: 0-1.5
Face: 0-2
Choppy

Friday
07/20

Primary

Holding 8s ENE
Haw: 2-3
Face: 3-5

Secondary

Dropping 8s NE
Haw: 0-1
Face: 0-1.5
Choppy

Saturday
07/21

Primary

Holding 8s ENE
Haw: 1-2 occ 3
Face: 2-4 occ 5

Secondary

None  NONE
Haw: 0
Face: 0
Choppy

Sunday
07/22

Primary

Holding 8s ENE
Haw: 1-2+
Face: 1-3+

Secondary

None  NONE
Haw: 0
Face: 0
Typical

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Current Swells:

Wednesday 07/18


Third: Holding 9s NE surf @1 occ 2 
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Marine Warnings:

Wednesday   07/18
Small Craft Adv for ALL waters
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Sailing Report:

Wednesday   07/18
Good with moderate to fresh to strong E Trades filling
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Diving Report:

Wednesday   07/18
Fair-Good for most North shores spots & good for most West Side spots; good for deeper dives along most south shores. Fair for inside reefs, poor for most outside reefs along Windward shores.

Oahu

Maui

Kauai

Big Island

Weather

Surf Advisory and Warning Criteria
Location/shoreline Advisory Warning
North-Facing Shores- 15 Feet faces (8' Local) 25 Feet faces (15' local)
West-Facing Shores - 12 Feet (7' local) 20 Feet (12' local)
West-Facing- Big Is.- 8 Feet (4'+ local) 12 Feet (7' local)
South-Facing Shores- 8 Feet (4'+ local) 15 Feet (8' local)
East-Facing Shores- 8 Feet (4'+ local) 15 Feet (8' local)

Big Picture

INACTIVE.
Get the latest on the tropics at www.hurricanes.gov
The Central Pacific Hurricane Center outlook for the 2017 Central Pacific Hurricane Season calls for 5 to 8 tropical cyclones to either develop or cross into the Central Pacific with a 40% chance for an above-normal season, a 40% chance for a normal season, and a 20% chance for a below-normal season. An average season has 4 to 5 tropical cyclones, which include tropical depressions, tropical storms, and hurricanes.
A tropical depression forms when a low-pressure area is accompanied by thunderstorms that produce a circular wind flow with maximum sustained winds below 39 mph. An upgrade to a tropical storm occurs when cyclonic circulation becomes more organized and maximum sustained winds gust between 39 mph and 73 mph. A tropical storm is then upgraded into Category 1 hurricane status as maximum sustained winds increase to between 74 mph and 95 mph. (The highest classification in the scale, Category 5, is reserved for storms with winds exceeding 156 mph).
Tropical cyclones go by many names around the world, and the terminology can get confusing. Once a tropical cyclone strengthens to the point where it has gale-force winds—39 mph or greater—it becomes a tropical storm. A storm that reaches tropical storm strength usually gets its own name to help us quickly identify it in forecasts and warnings. Once a tropical storm begins producing sustained winds of around 75 mph, we call the storm a typhoon in the western Pacific near Asia and a hurricane in the oceans on either side of North America. A “typhoon” and a “hurricane” are the same kind of storm, they just go by different names…it’s only a matter of geography.
NWS criteria for High Surf Advisories & Warnings.
In coordination with civil defense agencies & water safety organizations in Hawai`i, the NWS uses the criteria below for the issuance of High Surf Advisories & Warnings in coordination with civil defense agencies & water safety organizations in Hawai`i.
All surf height observations & forecasts are for the full face surf height, from the trough to the crest of the wave.
Advisory and Warning Criteria Location
Warning North-Facing Shores 15 Feet 25 Feet
West-Facing Shores - Remaining Islands 12 Feet 20 Feet
West-Facing Shores - Big Island 8 Feet 12 Feet
South-Facing Shores 8 Feet 15 Feet
East-Facing Shores 8 Feet 15 Feet
'Travel Time' Buoy 51101 to Waimea Buoy. Distance: 269 nautical miles (~310 miles). Angle: 307 deg
Wave Wave Wave Depth Wave Direction (deg)----------
Period Length Speed Shallow 295, 305, 315, 325, 335, 345, 355
(s) (ft) (nm/h) (ft) Travel Time (hours)----------
10sec. 512. 15. 256. 17.3, 17.7, 17.6, 16.9, 15.7, 14.0, 11.9
12sec. 737. 18. 369. 14.5, 14.8, 14.6, 14.0, 13.0, 11.6, 9.9
14sec. 1003. 21. 502. 12.4, 12.7, 12.5, 12.0, 11.2, 10.0, 8.5
16sec. 1310. 24. 655. 10.8, ,1 1.1, 11.0, 10.5, 9.8, 8.7, 7.4
18sec. 1658. 27. 829. 9.6, 9.8, 9.8, 9.4, 8.7, 7.8, 6.6
20sec. 2047. 30. 1024. 8.7 8.9 8.8 8.4 7.8 7.0 5.9
22sec. 2477. 33. 1239. 7.9 8.1 8.0 7.7 7.1 6.3 5.4
24sec. 2948. 36. 1474. 7.2 7.4 7.3 7.0 6.5 5.8 4.9

Tropical Storms - wind 39-73 mph (34-63 kt)
Category 1 - winds 74-95 mph (64-82 kt)
Category 2 -winds 96-110 mph (83-95 kt)
Category 3 -winds 111-130 mph (96-113 kt)
Category 4 - winds 131-155 mph (114-135 kt)
Category 5 -winds 156 mph and up (135+ kt)
Please visit the Central Pacific Hurricane Center website at www.weather.gov/cphc for the most recent bulletins.
ENSO is a single climate phenomenon, it has three states or phases. The two opposite phases, “El Niño” and “La Niña,” require certain changes in both the ocean and the atmosphere because ENSO is a coupled climate phenomenon. “Neutral” is in the middle of the continuum. The MJO (Madden-Julian Oscillation) is an eastward moving disturbance of clouds, rainfall, winds, and pressure that traverses the planet in the tropics and returns to its initial starting point in 30 to 60 days, on average, unlike ENSO which is stationary. In a nutshell, more active means more surf.
Kelvin wave (A Kelvin wave is a wave in the ocean or atmosphere that balances the Earth's Coriolis force against a topographic boundary such as a coastline, or a waveguide such as the equator. A feature of a Kelvin wave is that it is non-dispersive, i.e., the phase speed of the wave crests is equal to the group speed of the wave energy for all frequencies. This means that it retains its shape as it moves in the alongshore direction over time.)

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