000
FZPQ50 PGUM 182050
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
650 AM ChST Mon Apr 19 2021

.SYNOPSIS...There will be a high risk of rip currents along west
facing reefs of the Marianas this week, which could spread to north
reefs in a couple of days. A high surf advisory remains in effect,
which could require an upgrade to a high surf warning at some point.

$$

GUZ001>004-191200-
Guam-Rota-Tinian-Saipan-
650 AM ChST Mon Apr 19 2021

...HIGH SURF ADVISORY IN EFFECT THIS WEEK ALONG WEST FACING REEFS...

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

.TODAY AND TONIGHT (6 AM TO 6 PM)...
Coastal Winds............East at around 10 mph.
Surf along North facing reefs............6 to 8 feet.
Surf along East  facing reefs............4 to 6 feet.
Surf along South facing reefs............4 to 6 feet.
Surf along West  facing reefs............10 to 12 feet.
Primary swell...............West at 7 to 9 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 98.

.TUESDAY (6 AM TO 6 PM)...
Coastal Winds............East at around 10 mph.
Surf along North facing reefs............8 to 11 feet.
Surf along East  facing reefs............5 to 7 feet.
Surf along South facing reefs............5 to 7 feet.
Surf along West  facing reefs............12 to 16 feet.
Primary swell...............West at 6 to 9 feet.
Primary period..............13 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.

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

.OUTLOOK...Little change through Thursday, then surf could diminish
by 1 to 2 feet along north and west reefs Friday.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
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
High tide  2.1 feet at  2:47 AM Tuesday
Low  tide  1.7 feet at  8:02 AM Tuesday
High tide  1.9 feet at 11:58 AM Tuesday

At Rota Island...
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
Low  tide  1.6 feet at  7:56 AM Tuesday
High tide  1.8 feet at 11:55 AM Tuesday

At Tinian Island...
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
High tide  1.5 feet at  3:28 AM Tuesday
Low  tide  1.3 feet at  8:03 AM Tuesday
High tide  1.4 feet at 11:05 AM Tuesday

At Tanapag Harbor, Saipan...
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
High tide  2.0 feet at  3:17 AM Tuesday
Low  tide  1.6 feet at  8:53 AM Tuesday
High tide  1.7 feet at 11:42 AM Tuesday

$$