000
FZPQ50 PGUM 220600
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Thu Apr 22 2021

.SYNOPSIS...West swell will maintain hazardous surf and a high risk
of rip currents along west facing reefs.

$$

GUZ001>004-222100-
Guam-Rota-Tinian-Saipan-
400 PM ChST Thu Apr 22 2021

...HIGH SURF ADVISORY THROUGH EARLY SATURDAY MORNING ALONG WEST
FACING REEFS...

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

.TONIGHT THROUGH FRIDAY NIGHT (6 PM TO 6 AM SATURDAY)...
Coastal Winds............Light and variable becoming southwest
                         5 mph Friday.
Surf along North facing reefs............5 to 7 feet.
Surf along East  facing reefs............4 to 6 feet.
Surf along South facing reefs............3 to 5 feet.
Surf along West  facing reefs............7 to 9 feet.
Primary swell...............West at 5 to 6 feet.
Primary period..............13 seconds.
Secondary swell...............East at around 3 feet.
Secondary period..............10 seconds.

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

Sea surface temperature at Ritidian buoy...85 Degrees.
Maximum afternoon heat index...........Around 95.

.OUTLOOK...Little change on Saturday, but surf may fall below
hazardous levels Saturday night along west facing reefs, before
building again Sunday.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.2 feet at  9:52 PM Thursday
High tide  2.4 feet at  5:12 AM Friday
Low  tide  1.3 feet at 11:01 AM Friday
High tide  2.1 feet at  4:07 PM Friday
Low  tide  0.3 feet at 10:49 PM Friday
High tide  2.5 feet at  5:44 AM Saturday
Low  tide  1.0 feet at 11:43 AM Saturday

At Rota Island...
Low  tide  0.2 feet at  9:46 PM Thursday
High tide  2.2 feet at  5:09 AM Friday
Low  tide  1.2 feet at 10:55 AM Friday
High tide  2.0 feet at  4:04 PM Friday
Low  tide  0.3 feet at 10:43 PM Friday
High tide  2.3 feet at  5:41 AM Saturday
Low  tide  1.0 feet at 11:37 AM Saturday

At Tinian Island...
Low  tide  0.1 feet at  9:31 PM Thursday
High tide  1.6 feet at  4:56 AM Friday
Low  tide  1.0 feet at 10:29 AM Friday
High tide  1.5 feet at  3:25 PM Friday
Low  tide  0.2 feet at 10:22 PM Friday
High tide  1.7 feet at  5:15 AM Saturday
Low  tide  0.8 feet at 11:10 AM Saturday

At Tanapag Harbor, Saipan...
Low  tide  0.1 feet at  9:58 PM Thursday
High tide  2.2 feet at  5:21 AM Friday
Low  tide  1.1 feet at 11:07 AM Friday
High tide  1.7 feet at  4:18 PM Friday
Low  tide  0.2 feet at 10:48 PM Friday
High tide  2.2 feet at  5:49 AM Saturday
Low  tide  0.8 feet at 11:43 AM Saturday

$$