000
FZPQ50 PGUM 170600
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Sat Apr 17 2021

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

$$

GUZ001>004-172100-
Guam-Rota-Tinian-Saipan-
400 PM ChST Sat Apr 17 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 7 AM CHST NEXT
SATURDAY ALONG WEST AND SOUTH FACING REEFS...

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

.TONIGHT AND SUNDAY (6 PM TO 6 PM SUNDAY)...
Coastal Winds............Northeast at 10 to 15 mph.
Surf along North facing reefs............4 to 6 feet.
Surf along East  facing reefs............4 to 6 feet.
Surf along South facing reefs............7 to 9 feet.
Surf along West  facing reefs............7 to 9 feet.
Primary swell...............Southwest at around 6 feet.
Primary period..............11 seconds.
Secondary swell...............Northeast 3 to 5 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 Tanapag buoy... 85 Degrees.
Maximum afternoon heat index...........Around 96.


.SUNDAY NIGHT (6 PM TO 6 AM MONDAY)...
Coastal Winds............East at 10 to 15 mph.
Surf along North facing reefs............3 to 5 feet.
Surf along East  facing reefs............4 to 6 feet.
Surf along South facing reefs............7 to 9 feet.
Surf along West  facing reefs............8 to 10 feet.
Primary swell...............Southwest at around 6 to 7 feet.
Primary period..............12 seconds.
Secondary swell...............Northeast at 2 to 4 feet.
Secondary period..............11 seconds.

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

.OUTLOOK...Surf is expected to maintain hazardous levels.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.1 feet at  5:00 PM Saturday
High tide  2.1 feet at 12:26 AM Sunday
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

At Rota Island...
Low  tide  0.1 feet at  4:54 PM Saturday
High tide  2.0 feet at 12:23 AM Sunday
Low  tide  1.5 feet at  5:37 AM Sunday
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

At Tinian Island...
Low  tide  0.0 feet at  4:39 PM Saturday
High tide  1.5 feet at  1:37 AM Sunday
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

At Tanapag Harbor, Saipan...
Low  tide  0.1 feet at  5:03 PM Saturday
High tide  2.0 feet at  1:06 AM Sunday
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

$$