Surf Forecast
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305
FZMY50 PGUM 171918
SRFMY

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
600 AM ChST Thu Jan 18 2018

.SYNOPSIS...A combination of large north swell and trade-wind swell
will maintain a high risk of rip currents along north and east facing
reefs today. Swell will decrease later today, allowing the risk of
rip currents to fall to moderate.

$$

GUZ001>004-180900-
Guam-Rota-Tinian-Saipan-
600 AM ChST Thu Jan 18 2018

...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM CHST THIS EVENING ALONG
NORTH FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH THIS AFTERNOON ALONG NORTH AND
EAST FACING REEFS...

.TODAY...
Coastal Winds............East at 10 to 20 mph.
Surf along North facing reefs............7 to 10 feet.
Surf along East  facing reefs............7 to 9 feet.
Surf along South facing reefs............2 to 4 feet.
Surf along West  facing reefs............4 to 6 feet.
Primary swell...............East at 3 to 6 feet.
Primary period..............9 seconds.
Secondary swell...............North at 6 to 7 feet.
Secondary period..............13 seconds.

Rip current risk.....High. Pounding surf will produce life
                     threatening rip currents at reefs and beaches.

Sea surface temperature at Ritidian buoy...83 Degrees.
Maximum afternoon heat index...........Around 96.

.TONIGHT...
Coastal Winds............East at 10 to 15 mph.
Surf along North facing reefs............6 to 8 feet.
Surf along East  facing reefs............6 to 8 feet.
Surf along South facing reefs............2 to 4 feet.
Surf along West  facing reefs............3 to 5 feet.
Primary swell...............East at 4 to 6 feet.
Primary period..............9 seconds.
Secondary swell...............North at 5 to 6 feet.
Secondary period..............10 seconds.

Rip current risk.....Moderate. Wave conditions support stronger or
                     more frequent rip currents. Always have a
                     flotation device with you in the water.

.OUTLOOK...Surf along north and east facing reefs will fall an
additional 1 to 2 feet on Friday.

Tide information for the next 24 hours...

At Apra Harbor, Guam...
High tide  2.3 feet at  9:27 AM Thursday
Low  tide  1.4 feet at  2:57 PM Thursday
High tide  2.3 feet at  7:49 PM Thursday
Low  tide -0.3 feet at  3:02 AM Friday

At Rota Island...
High tide  2.2 feet at  9:24 AM Thursday
Low  tide  1.3 feet at  2:51 PM Thursday
High tide  2.2 feet at  7:46 PM Thursday
Low  tide -0.3 feet at  2:56 AM Friday

At Tinian Island...
High tide  1.7 feet at  9:25 AM Thursday
Low  tide  0.5 feet at  2:34 PM Thursday
High tide  1.7 feet at  7:47 PM Thursday
Low  tide -0.1 feet at  2:39 AM Friday

At Tanapag Harbor, Saipan...
High tide  2.1 feet at  9:42 AM Thursday
Low  tide  1.5 feet at  2:47 PM Thursday
High tide  2.0 feet at  7:43 PM Thursday
Low  tide -0.2 feet at  3:00 AM Friday

$$



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