000
FZPQ50 PGUM 172003
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
603 AM ChST Sun Apr 18 2021

.SYNOPSIS...Swell from distant Super Typhoon Surigae will maintain
hazardous surf along west facing reefs the next few days. The rip
current risk will be high on west facing reefs and moderate on
north...east and south exposures through the week.

$$

GUZ001>004-180900-
Guam-Rota-Tinian-Saipan-
603 AM ChST Sun Apr 18 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT ALONG WEST FACING REEFS...

36 hour Surf Zone Forecast for the Marianas from 600 AM Sunday
through 600 PM Monday

.TODAY THROUGH MONDAY (6 AM TO 6 PM MONDAY)...
Coastal Winds............Northeast at 10 to 15 mph...
                becoming east at 10 to 15 mph tonight
Surf along North facing reefs............4 to 6 feet.
Surf along East  facing reefs............4 to 6 feet.
Surf along South facing reefs............5 to 7 feet.
Surf along West  facing reefs............9 to 11 feet.
Primary swell...............West at around 7 feet.
Primary period..............12 seconds.
Secondary swell...............Northeast at around 3 feet.
Secondary period..............11 seconds.


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

Sea surface temperature at Ritidian buoy... 84 Degrees.

Maximum afternoon heat index...........Around 95.


.OUTLOOK...Little change the next several days.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.6 feet at  5:43 AM Sunday
High tide  2.0 feet at 10:14 AM Sunday
Low  tide  0.1 feet at  5:47 PM Sunday
High tide  2.1 feet at  1:35 AM Monday
Low  tide  1.7 feet at  6:46 AM Monday
High tide  1.9 feet at 10:57 AM Monday
Low  tide  0.1 feet at  6:43 PM Monday

At Rota Island...
High tide  1.9 feet at 10:11 AM Sunday
Low  tide  0.1 feet at  5:41 PM Sunday
High tide  2.0 feet at  1:32 AM Monday
Low  tide  1.6 feet at  6:40 AM Monday
High tide  1.8 feet at 10:54 AM Monday
Low  tide  0.1 feet at  6:37 PM Monday
High tide  2.0 feet at  2:44 AM Tuesday

At Tinian Island...
Low  tide  1.3 feet at  5:44 AM Sunday
High tide  1.4 feet at  9:11 AM Sunday
Low  tide  0.0 feet at  5:31 PM Sunday
High tide  1.5 feet at  2:39 AM Monday
Low  tide  1.3 feet at  6:54 AM Monday
High tide  1.4 feet at  9:57 AM Monday
Low  tide  0.0 feet at  6:29 PM Monday

At Tanapag Harbor, Saipan...
Low  tide  1.6 feet at  6:00 AM Sunday
High tide  1.8 feet at  9:46 AM Sunday
Low  tide  0.2 feet at  5:54 PM Sunday
High tide  2.0 feet at  2:08 AM Monday
Low  tide  1.6 feet at  7:24 AM Monday
High tide  1.7 feet at 10:27 AM Monday
Low  tide  0.2 feet at  6:53 PM Monday

$$