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FZPQ50 PGUM 190702
SRFGUM

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

.SYNOPSIS...There will be a high risk of rip currents along west
facing reefs this week, which could spread to north facing reefs by
Thursday. A high surf advisory remains in effect and may need to be
upgraded to a high surf warning later in the week.

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GUZ001>004-192100-
Guam-Rota-Tinian-Saipan-
502 PM ChST Mon Apr 19 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL EARLY SATURDAY
MORNING ALONG WEST FACING REEFS...

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

.TONIGHT AND TUESDAY (6 PM TO 6 PM TUESDAY)...
Coastal Winds............East at 10 to 15 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 13 feet.
Primary swell...............West at 7 to 10 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.

Sea surface temperature at Ritidian buoy...84 Degrees.
Maximum afternoon heat index...........Around 95.

.TUESDAY NIGHT (6 PM TO 6 AM WEDNESDAY)...
Coastal Winds............East at 10 to 15 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............9 to 12 feet.
Primary swell...............West at 7 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.

.OUTLOOK...Surf could increase 1 to 2 feet along north and west
facing reefs Thursday.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
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
Low  tide  0.2 feet at  7:46 PM Tuesday
High tide  2.2 feet at  3:48 AM Wednesday

At Rota Island...
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
Low  tide  0.2 feet at  7:40 PM Tuesday
High tide  2.0 feet at  3:45 AM Wednesday

At Tinian Island...
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
Low  tide  0.0 feet at  7:32 PM Tuesday
High tide  1.6 feet at  4:07 AM Wednesday

At Tanapag Harbor, Saipan...
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
Low  tide  0.2 feet at  7:56 PM Tuesday
High tide  2.1 feet at  4:12 AM Wednesday

$$