473
FZPQ50 PGUM 202033
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
633 AM ChST Wed Apr 21 2021

.SYNOPSIS...There will be hazardous surf and a high risk of rip
currents along north and west facing reefs of the Marianas through
Saturday.

$$

GUZ001>004-211145-
Guam-Rota-Tinian-Saipan-
633 AM ChST Wed Apr 21 2021

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

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

.TODAY THROUGH THURSDAY (6 AM TO 6 PM THURSDAY)...
Coastal Winds............Northeast at around 10 mph.
Surf along North facing reefs............7 to 9 feet.
Surf along East  facing reefs............4 to 6 feet.
Surf along South facing reefs............4 to 6 feet.
Surf along West  facing reefs............8 to 10 feet.
Primary swell...............West at 5 to 7 feet.
Primary period..............13 seconds.
Secondary swell...............East 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...Surf will diminish 1 foot along all reefs Thursday night.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.6 feet at  9:16 AM Wednesday
High tide  1.9 feet at  1:17 PM Wednesday
Low  tide  0.2 feet at  8:51 PM Wednesday
High tide  2.3 feet at  4:35 AM Thursday
Low  tide  1.5 feet at 10:13 AM Thursday
High tide  2.0 feet at  2:45 PM Thursday

At Rota Island...
Low  tide  1.5 feet at  9:10 AM Wednesday
High tide  1.8 feet at  1:14 PM Wednesday
Low  tide  0.2 feet at  8:45 PM Wednesday
High tide  2.1 feet at  4:32 AM Thursday
Low  tide  1.4 feet at 10:07 AM Thursday
High tide  1.8 feet at  2:42 PM Thursday

At Tinian Island...
Low  tide  1.3 feet at  9:00 AM Wednesday
High tide  1.4 feet at 12:36 PM Wednesday
Low  tide  0.1 feet at  8:35 PM Wednesday
High tide  1.6 feet at  4:36 AM Thursday
Low  tide  1.2 feet at  9:47 AM Thursday
High tide  1.5 feet at  2:07 PM Thursday

At Tanapag Harbor, Saipan...
Low  tide  1.5 feet at  9:53 AM Wednesday
High tide  1.6 feet at  1:06 PM Wednesday
Low  tide  0.2 feet at  9:00 PM Wednesday
High tide  2.2 feet at  4:50 AM Thursday
Low  tide  1.3 feet at 10:32 AM Thursday
High tide  1.6 feet at  2:43 PM Thursday

$$