Premium snn Membership

Join the Premium SNN Membership and enjoy 10 Day Forecasts, All Webcams Page, 5 Days Webcams Archives, Help Surfrider & Access Surf with your partnership.
All for just $8/month Sign Up Now! 1st Month is FREE

BIG CITY DINER MARCH-MAY 2018

645am OBS Wednesday April 18th Pwrd by Access Surf's Wounded Warrior Day @ the Beach... Today

Flash Flood Watch. Another super rainy cloudy morning and 10-25 mph NE trades. Small craft advisory for channels....& Stay out of any brown water!

BIG PICTURE Updated: Monday 4/16. Solid ENE trade swell. small-moderate SSW+SSE swells, Faded micro NNW. Call 596-SURF 7a, 12, 3, 5p recap-forecast.

Untitled-1

North Shore:

Down & dropping 9 sec NNW. Surf is mostly 0-1' but focal reefs reaching 1-2' with moderate bump and poo overall. Sunset-Rocky Pt 0-1', Pipe-OTW 0-1', Chuns 0-1', Laniakea 1-2', Ali'i Beach Park 0-1' & lotsa clouds with some showers.
Untitled-1

West:

Mostly small SSW/SSE. Makaha is inconsistent, clean offshore @ 0-1 maybe occ 2'. Light NE Trades filling to Moderate-Fresh gusts later under cloudy skies.
Untitled-1

Town:

Up & Holding 13sec SSW/SSE. Surfs 1-2.5' or chest high even some occ 3' or head high sets here-there. Good form and fairly smooth offshores from Ala Moana to Kaisers. Threes-Pops-Queens mostly 1-2.5' under cloudy skies. Stay out of the brown water.
Untitled-1

Diamond Head:

BROWN WATER ADVSRY. Holding the SSW/SSE + ENE trade swell. Surf is 2-3' sets (saw bigger set towards Black Pt) with moderate to fresh side-off bump under cloudy skies.
Untitled-1

Sandy's:

Holding the mix of ENE + SSW-SSE. Surf's 2-3' and semi bumpy with early moderate to fresh side offshore; powerful, steep drops and some good ones from Full Point-Gas Chambers under lotsa clouds.
Untitled-1

East Makapu'u:

Tappered off alittle & no more Advsy sets; 9 sec ENE wind swell reaching 3-4' sets outside and choppy onshore. 1-3' toward Keiki's under tons of clouds.
Surf n Sea 728×90 generic

Weather

Wednesday
with="64"

Temp
min:
75°F
max: 86°F

Chance of Rain

Wind:
18mph ENE

Thursday
with="64"

Temp
min:
75°F
max: 84°F

Chance of Rain

Wind:
23mph ENE

Friday
with="64"

Temp
min:
75°F
max: 86°F

Chance of Rain

Wind:
23mph ENE

Saturday
with="64"

Temp
min:
75°F
max: 86°F

Chance of Rain

Wind:
18mph ENE

Sunday
with="64"

Temp
min:
75°F
max: 86°F

Chance of Rain

Wind:
23mph ENE

Range:
10-25mph NE Trade

Range:
10-20+mph NE Trade

Range:
10-20+mph NE Trade

Range:
10-25mph NE Trade

Range:
10-25mph NE Trade

North

Thursday
04/19
NW
Haw: 1-2+
Face: 1-3+
Rising early Evening
1' 18 sec 8pm
Friday
04/20
N-NW
Haw: 3-5
Face: 5-9
Rising
Downgrade: 3.5' 15sec
Saturday
04/21
N-NW
Haw: 2-4
Face: 3-7
Dropping
4' 13s
Sunday
04/22
N-NW
Haw: 1-2 occ 3
Face: 2-4 occ 5
Dropping

Monday
04/23
NW
Haw: 4-6
Face: 6-10
Rising
5' 14s
ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet

West

Thursday
04/19
NW
Haw: 1-2+
Face: 1-3+
Rising early Afternoon
2' 12 sec
Friday
04/20
NW
Haw: 2-4
Face: 3-7
Rising

Saturday
04/21
NW SSW
Haw: 1-3
Face: 2-5
Holding

Sunday
04/22
NW SSW
Haw: 1-2 occ 3
Face: 2-4 occ 5
Dropping
1.2' 14s
Monday
04/23
NW SSW
Haw: 2-4+
Face: 3-7+
Rising
.8' 16 sec SSW + 2' 14s NW
ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet

South

Thursday
04/19
SSE+SSW
Haw: 1-2 occ 3
Face: 2-4 occ 5
Dropping Slow
2' 13 sec
Friday
04/20
SSE+SSW
Haw: 1-2 occ +
Face: 1-3 occ +
Holding

Saturday
04/21
S-SW
Haw: 1-2 occ +
Face: 1-3 occ +
Rising Slow
1' 15sec
Sunday
04/22
S-SW
Haw: 1-2 occ +
Face: 1-3 occ +
Rising Slow
1.2' 14sec
Monday
04/23
SW
Haw: 1-2 occ +
Face: 1-3 occ +
Rising Slow
1' 16s
ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet

east

Thursday
04/19
E-NE
Haw: 2-3 occ +
Face: 3-5 occ +
Dropping

Friday
04/20
E-NE
Haw: 2-3 occ +
Face: 3-5 occ +
Dropping

Saturday
04/21
E-NE
Haw: 2-3 occ +
Face: 3-5 occ +
Rising

Sunday
04/22
E-NE
Haw: 2-3+
Face: 3-5+
Rising

Monday
04/23
E-NE
Haw: 2-3+
Face: 3-5+
Holding

ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet ho ho, you can't display HTML canvas graphics yet
Untitled-1

Current Swells:

Thursday   04/19
Primary: Dropping Slowly  E-NE  TREND: 2-3' occ +' surf at 8-9 sec
Secondary: Dropping  SSE+SSW  TREND: 1-2.5' surf at 13 sec
Third: Rising Later  NW  TREND: Surf to be 3' 4pm at 17 sec
Untitled-1

Marine Warnings:

Thursday   04/19
IIsolated dirty water+Small craft adv from fresh NE winds for channels
Untitled-1

Sailing Report:

Thursday   04/19
Good with Moderate-Fresh NE Trades but weather
Untitled-1

Diving Report:

Thursday   04/19
Isolated Brown water run off for most shores. Poor for North zones & West dive zones. Poor along Windward shores and poor for south 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.)

Surfer's Wall Photos

Latest Photos:

Most Liked Photos:

Back to Top