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

7am OBs Monday 8/31 powered 'Catch Fire' Sunday Sept 6th @Surfer, the Bar

Partly cloudy. Nearly calm & filling NE Trade later.

Up on the NE Ignacio swell and down on the WNW. SW hovers with glassy conditions. Increasing easterly Ignacio swell today and tomorrow; high surf warning for the eastside of the Big Is. Call the SNN Hotline 596-SURF.

Untitled-1

North Shore:

Up and rising on the 10 sec NE & down a little on the WNW. Sunset is 2-3' and Rocky Pt is 1-2.5'; Pipe rights at 1-2' Ehukai etc better & Chuns is down on the WNW. Not as good anymore. Laniakea is 2-3' solid and better today; clean in the morning with lite variables with NE flow later; few blue parts overhead, afternoon showers possible.
Untitled-1

West:

Down on the WNW, Holding on the S-SW & no NE wrap yet. 1-2 occ plus' at Makaha with glass but onshore seabreeze mush (mixing with NE possible) afternoon; fairly clear.
Untitled-1

Town:

Down and Holding on a 13 sec SW. Surf's 1-2 occ solid 3' or head high sets at Bowls; it's glassy with lite NE trade offshores coming; ; few clouds.
Untitled-1

Diamond Head:

Down and Holding on the 13 sec SW and SSE @ 2-3' on drops with smooth water then lite NE offshores later; good form at Right hands/Cliffs/Lite House etc; partly clear.
Untitled-1

Sandy's:

Up on the NE and Holding on the S-SW @ 1-2-3' and chance of plus this afternoon pending NE getting in. Full Pt. etc has 3' sets; it's smaller at 1/2 Pt. but it's smooth from Pipe little's all the way to Gas Chambers; fun sandbars & lite NE trade flow filling with beautiful morning skies, but this could change.
Untitled-1

East Makapu'u:

Up and Rising NE Ignacio swell today and tomorrow (4' 11sec). 2-3+' but there's a good chance of up to 3-6+ tomorrow; water's lite onshore and real decent; pretty cloudy.

Weather

Monday
with="64"

Temp
min:
77°F
max: 90°F

Chance of Rain

Wind:
18mph NE

Tuesday
with="64"

Temp
min:
77°F
max: 92°F

Chance of Rain

Wind:
8mph NNW

Wednesday
with="64"

Temp
min:
77°F
max: 90°F

Chance of Rain

Wind:
18mph SW

Thursday
with="64"

Temp
min:
76°F
max: 88°F

Chance of Rain

Wind:
13mph S

Friday
with="64"

Temp
min:
76°F
max: 89°F

Chance of Rain

Wind:
13mph SSW

Range:
5-15+mph NE
Tropical Storm conditions for Maui & B.I.
Range:
10-25mph N
Tropical Storm conditions, rain, Thunder storms
Range:
5-15mph SW
Turning Konas
Range:
5-15mph S

Range:
5-10mph Light/Var
seabreezes midday-afternoon

North

Monday
08/31
NE
Haw: 2-3
Face: 3-5
Rising
trace WNW; smooth, fairly cloudy
Tuesday
09/01
NE
Haw: 2-5
Face: 3-8
Rising
10' 11sec; sketchy wrap
Wednesday
09/02
COMBO
Haw: 2-5
Face: 3-8
Rising
NNE 9' 10 sec + NNW 5' 9sec
Thursday
09/03
NE
Haw: 1-3+
Face: 2-5+
Rising

Friday
09/04
E-NE
Haw: 1-2+
Face: 1-3+
Rising
sketchy 4' 12 sec; Jimenez
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

Monday
08/31
COMBO
Haw: 1-2 occ 3
Face: 2-4 occ 5
Dropping
WNW + SSW, clean, partly cloudy
Tuesday
09/01
COMBO
Haw: 1-2+
Face: 1-3+
Rising
new 3' NE wrap?
Wednesday
09/02
S-SW
Haw: 1-2+
Face: 1-3+
Rising
1' 16 sec SSW + 3' N wrap
Thursday
09/03
S-SW
Haw: 2-3
Face: 3-5
Rising
2' 14 sec
Friday
09/04
S-SW
Haw: 2-3 occ +
Face: 3-5 occ +
Rising
new 2' 20 sec SSW forerunners + NE
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

Monday
08/31
S-SW
Haw: 1-2 occ 3
Face: 2-4 occ 5
Holding
2' 13 sec, lulls, clean, partly clear
Tuesday
09/01
S-SW
Haw: 1-2+
Face: 1-3+
Holding

Wednesday
09/02
S-SW
Haw: 1-2+
Face: 1-3+
Rising
1' 16 sec
Thursday
09/03
S-SW
Haw: 2-3
Face: 3-5
Rising
2' 15 sec + 1' 18 sec SSW later
Friday
09/04
S-SW
Haw: 2-4
Face: 3-7
Rising
2' 20 sec + 2' 12 sec
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

Monday
08/31
E-NE
Haw: 2-4
Face: 3-7
Rising

Tuesday
09/01
NE
Haw: 5-8
Face: 8-14
Rising
warnings, 8' 11 sec: Hurricane Ignacio peaks today
Wednesday
09/02
NE
Haw: 4-6+
Face: 6-10+
Dropping

Thursday
09/03
NE
Haw: 2-5
Face: 3-8
Dropping
forerunners Hurricane Jimenez
Friday
09/04
E-NE
Haw: 2-3 occ 4
Face: 3-5 occ 7
Rising
4' 12 sec sec; Hurricane Jimenez
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:

Monday   08/31
Primary: Rising  NE  2-3+' surf @ 11 sec
Secondary: Holding  S-SW  1-2+ surf at 13 sec
Third: Holding  S-SW  1-3'+
Untitled-1

Marine Warnings:

Monday   08/31
High surf advisories for East shores
Untitled-1

Sailing Report:

Monday   08/31
Poor to Fair early but good later with NE trades filling in 10-20mph
Untitled-1

Diving Report:

Monday   08/31
Best bet out west. Fair for South. Poor for east and N due to NE swell rising. , especially the increasing hurricane swell. Watchout/stay out: dirty brownish waters.

Oahu

SUNSET
Monday   08/31
NE
Haw: 2-3
Face: 3-5
Variables to trades
smooth

ROCKY POINT
Monday   08/31
NE
Haw: 1-3
Face: 2-5
Variables to trades
smooth

Pipeline
Monday   08/31
NE
Haw: 1-2
Face: 1-3
Variables to trades
smooth
Ehukai bigger
HALEIWA
Monday   08/31
NE
Haw: 1-2
Face: 1-3
Variables to trades
smooth
stay out of isolated brown water
MAKAHA
Monday   08/31
COMBO
Haw: 1-2 occ 3
Face: 2-4 occ 5
Variables to sea-breezes
smooth am...mushy pm

ALA MOANA
Monday   08/31
S-SW
Haw: 1-2 occ 3
Face: 2-4 occ 5
Variables to trades
good

ALA MOANA
Monday   08/31
S-SW
Haw: 1-2+
Face: 1-3+
NE Trades moderate-fresh
Offshore

Waikiki
Monday   08/31
S-SW
Haw: 1-2+
Face: 1-3+
Variables to trades
good

Diamond Head
Monday   08/31
S-SW
Haw: 1-3
Face: 2-5
Variables to trades
good

Sandy Beach
Monday   08/31
COMBO
Haw: 1-3
Face: 2-5
Variables to trades
smooth
NE+SSW
Makapuu
Monday   08/31
NE
Haw: 2-3+
Face: 3-5+
NE Trades light
smooth
+ later

Maui

Hookipa
Monday   08/31
NE
Haw: 1-2 occ 3
Face: 2-4 occ 5
ENE Trades light-moderate
fair
stay out of isolated brown water
Honolua
Monday   08/31
NE
Haw: 0-2
Face: 0-3
NE Trades light
smooth
stay out of isolated brown water
Kihei
Monday   08/31
COMBO
Haw: 0-1/2
Face: 0-1
NE Trades very light
smooth

Hana
Monday   08/31
NE
Haw: 2-4
Face: 3-7
NE Trades light
fair to good
iso+ later
Lahaina
Monday   08/31
S-SW
Haw: 1-3
Face: 2-5
Variables to trades
smooth

Kauai

Hanalei
Monday   08/31
NE
Haw: 1-2+
Face: 1-3+
Variables to trades
smooth

Majors
Monday   08/31
COMBO
Haw: 1-2 occ 3
Face: 2-4 occ 5
Variables to sea-breezes
smooth

Poipu
Monday   08/31
S-SW
Haw: 1-2 occ 3
Face: 2-4 occ 5
Variables to trades
smooth

Poipu
Monday   08/31
S-SW
Haw: 1-2 occ +
Face: 1-3 occ +
NE Trades moderate
fair to good

Kapaa
Monday   08/31
NE
Haw: 1-3+
Face: 2-5+
NE Trades light
fair to good

Big Island

Hamakua Coast
Monday   08/31
NE
Haw: 3-5
Face: 5-9
NE Trades light-moderate
rainy, stormy

Kohala
Monday   08/31
NE
Haw: 0-2
Face: 0-3
Variables to trades
smooth

Kona
Monday   08/31
S-SW
Haw: 1-2 occ +
Face: 1-3 occ +
Variables to sea-breezes
smooth

Hilo
Monday   08/31
NE
Haw: 3-5
Face: 5-9
NE Trades light-moderate
rainy, stormy
+later
Kau
Monday   08/31
NE
Haw: 2-4+
Face: 3-7+
NE Trades light
rainy, stormy

Weather

Advisory and Warning Criteria
Location Advisory Warning
North-Facing Shores 15 Feet (8') 25 Feet
West-Facing Shores - Big Island 8 Feet (4'+) 12 Feet
West-Facing Shores - Remaining Islands 12 Feet (7') 20 Feet
South-Facing Shores 8 Feet (4'+) 15 Feet
East-Facing Shores 8 Feet (4'+) 15 Feet

Big Picture

Big Picture Tuesday update 8/25/15

NPAC
The majority of the Jet is far above the Aleutians and some trough off Japan. High pressure is established off to the NE but trades haven’t competed well against the effects of Kilo and nearby troughing.
The tough off Japan deepened this week right as Atsani recurves from the tropics up into the subtropics (a gender bender) merging with and feeding off the energy creating a long lasting fun but downgraded WNW.

Recent and current: Today we see a and that ongoing West up to 3’ for Chuns etc thanks to Typhoon Atsani (8/13-8/24) and this storm will gift us at the end of the upcoming week as it becomes a cold core extra Tropical Low in the NPAC. Read below. Plus there’s a tiny 2’ NE at 9 sec for Laniakea.

Next: Kilo and Loke may add in subtle West energy under Atsani.

Next: Former Atsani spins off Japan from its NE track with 45’ seas as its veers ENE reaching 500 miles off the dateline .Most the energy points off to the NE as Atsani tracks N again and wanes. But a 3-5’ WNW surf at 16-18 sec should fill Friday and peak Saturday before fading Sunday.

Next: A small Low tracking down from the Gulf of Alaska should push down some 4’ surf at 11 seconds Tuesday Sept 1st and last into Thursday morning.

Last: A broader Gulf Low spins up Aug 31st but has an ESE track. We should still see some NE swell around the 5th of Sept. Chance of ENE swell from 12-E below but it’s too early to claim.

SPAC:

Recent and current: Several sources. We currently have a fun solid 2+’ WSW from Atsani and SSE swell from French Polynesia. This was good for last weekend for the Dukes 125th B Day Oceanfest and the NoRep Hawaiian Surfing Championships.

Next: More SSE fills Wednesday from near Tahiti 5 days ago again and this will last into Friday adding to this will be a SSW.

Next: A quick zonal Low near the Ross Ice Shelf last week should bring in some 1-2+ Friday from the SSW at 16 seconds. With the SSE Mix we’ll see solid 3’ or head high waves into the weekend.

Next: This Monday-Wed a huge Low tracks east from under Australia and out to the SE of NZL by Wednesday the 26th. Seas are about 30’ but the zonal track will limit surf to 2-3’ from the SSW with 16 seconds filling all day Thursday Sept 1st and peaking Wed-Thursday 2nd-3rd with a good chance at some just overhead sets.

Next/last: A powerful storm rises NE off the Ross Ice Shelf SE of NZL with some 40’ seas Friday the 28th. It broadens with a huge area of winds allowing for the consolidation of open ocean sea growth. WW3 long range often run hot or overcalls on its initial output and have started to downgrade each day for a few days. But, we’ll go ahead and claim good SSW swell to kick off September. Its rise all day Thursday the 3rd and peak reefs hitting up to 5’ surf from the SSW at 16-18 sec later Friday peaking Saturday the 5th.

Windward:

Recent and current: Surfs been good with off and on pulses from the NE. Other than that we’ve had the typical range of 2 and 3’ Wind swell. The High to the NE is stable and allowing for upstream fetches and 8-9 seconds which means better refraction esp for spots in the country and to the NE. Large surf likely from 12-E below 9/5.
Tropics: Most models predict a tropical cyclone, likely Twelve-E, to approach the islands from the southeast by early next week. While it was much too early to speculate about the possible track and effects, the moisture surge surrounding the cyclone may produce significant effects anyway, as the events of Kilo the last couple of days demonstrated. Many models also predicted the trough aloft to dig toward the islands over the weekend. Thus, early next week may well start with another concentrated bout of convection.

Next: Looks like models are saying 12-E will resemble a hurricane early next week. WW3 calling for a fast huge ramp up in close interval ENE surf Sat the 5th at 12’ 11 seconds. Warnings will go up if the long range comes true. This is just a heads up. Today, the National Hurricane Center is issuing advisories on Tropical Depression Twelve-E, located well east-southeast of the Islands.


Hurricanes so far….

Andres
Blanca
Carlos
Dolores Enrique Felicia
Guillermo Hilda Ignacio Jimena Kevin Linda
Marty Nora Olaf Patricia Rick Sandra
Terry Vivian Waldo Xina York Zelda









FETCH: Often called the fetch length, is a term for the length of water or distance over which a given wind direction has blown. Fetch length along with the wind speed (or strength) determines the size of waves produced. The longer the fetch length and the faster the wind speed, the larger and stronger the wave will be and vice versa.
CAPTURED or FOLLOWING FETCH: Not only does the fetch length determine the power and energy of the wave. Additionally, if the winds/fetch are blowing in the same direction as during the wave's or storm's lifetime, the wave will in turn be even stronger. The fetch is related to the orbit of the wave and track of the storm.The longer the wind drags along the sea the more energy the wave will have. This can be seen not just in vertical height measurement but in wave period (the measurement of waves through time).
WAVES PERIOD:Time, in seconds, between the passage of consecutive wave crests past a fixed point. In general the longer the period the bigger the wave. Windswell or 'close interval' swells are under 10 seconds. Big 'ground swells' are 17-20+ seconds (note: a 20+ second swell needs storm force 50+kt winds blowing over a 1500 mile fetch to be fully developed' into 20-25' beasts; these 20 second waves can be felt 1000 feet down!). This is why they jack so much more, pulling large amounts of H2O off the outer reefs.

More generic marine definitions click this link http://www.prh.noaa.gov/hnl/pages/marinedef.php

....All surf height observations and forecasts are for the full face surf height, from the trough to the crest of the wave.

Advisory and Warning Criteria
Location Advisory Warning
North-Facing Shores 15 Feet (8') 25 Feet
West-Facing Shores - Big Island 8 Feet (4'+) 12 Feet
West-Facing Shores - Remaining Islands 12 Feet (7') 20 Feet
South-Facing Shores 8 Feet (4'+) 15 Feet
East-Facing Shores 8 Feet (4'+) 15 Feet

Surfer's Wall Photos

Back to Top