National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZPQ50 PGUM 131805
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
405 AM ChST Wed Apr 14 2021

.SYNOPSIS...The risk of rip currents will remain moderate the next
few days.

$$

GUZ001>004-140915-
Guam-Rota-Tinian-Saipan-
405 AM ChST Wed Apr 14 2021

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

.TODAY (6 AM TO 6 PM)...
Coastal Winds............East at 10 to 15 mph.
Surf along North facing reefs............5 to 7 feet.
Surf along East  facing reefs............5 to 7 feet.
Surf along South facing reefs............1 to 3 feet.
Surf along West  facing reefs............2 to 4 feet.
Primary swell...............East at 3 to 5 feet.
Primary period..............11 seconds.
Secondary swell...............North at around 5 feet.
Secondary period..............10 seconds.

Rip current risk.....Moderate. Wave conditions support stronger or
                     more frequent rip currents. Always have a
                     flotation device with you in the water.

Sea surface temperature at Ritidian buoy...84 Degrees.
Maximum afternoon heat index...........Around 97.

.TONIGHT (6 PM TO 6 AM THURSDAY)...
Coastal Winds............East at 10 to 15 mph.
Surf along North facing reefs............4 to 6 feet.
Surf along East  facing reefs............5 to 7 feet.
Surf along South facing reefs............1 to 3 feet.
Surf along West  facing reefs............2 to 4 feet.
Primary swell...............East at 3 to 5 feet.
Primary period..............11 seconds.
Secondary swell...............North at around 4 feet.
Secondary period..............10 seconds.

Rip current risk.....Moderate. Wave conditions support stronger or
                     more frequent rip currents. Always have a
                     flotation device with you in the water.

.THURSDAY (6 AM TO 6 PM)...
Coastal Winds............East at 10 to 15 mph.
Surf along North facing reefs............3 to 5 feet.
Surf along East  facing reefs............6 to 8 feet.
Surf along South facing reefs............1 to 3 feet.
Surf along West  facing reefs............2 to 4 feet.
Primary swell...............East at 4 to 5 feet.
Primary period..............11 seconds.
Secondary swell...............Northeast at around 3 feet.
Secondary period..............10 seconds.

Rip current risk.....Moderate. Wave conditions support stronger or
                     more frequent rip currents. Always have a
                     flotation device with you in the water.

Maximum afternoon heat index...........Around 96.

.OUTLOOK...Little change through Friday.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.2 feet at  8:25 AM Wednesday
Low  tide  0.2 feet at  3:14 PM Wednesday
High tide  2.2 feet at  9:49 PM Wednesday
Low  tide  1.2 feet at  3:33 AM Thursday
High tide  2.2 feet at  8:47 AM Thursday
Low  tide  0.1 feet at  3:45 PM Thursday
High tide  2.2 feet at 10:35 PM Thursday

At Rota Island...
High tide  2.1 feet at  8:22 AM Wednesday
Low  tide  0.2 feet at  3:08 PM Wednesday
High tide  2.1 feet at  9:46 PM Wednesday
Low  tide  1.1 feet at  3:27 AM Thursday
High tide  2.0 feet at  8:44 AM Thursday
Low  tide  0.1 feet at  3:39 PM Thursday
High tide  2.0 feet at 10:32 PM Thursday

At Tinian Island...
High tide  1.6 feet at  7:40 AM Wednesday
Low  tide  0.2 feet at  2:39 PM Wednesday
High tide  1.4 feet at  9:37 PM Wednesday
Low  tide  1.1 feet at  3:04 AM Thursday
High tide  1.5 feet at  7:57 AM Thursday
Low  tide  0.1 feet at  3:14 PM Thursday
High tide  1.4 feet at 10:45 PM Thursday

At Tanapag Harbor, Saipan...
High tide  2.0 feet at  8:24 AM Wednesday
Low  tide  0.2 feet at  3:15 PM Wednesday
High tide  2.0 feet at 10:14 PM Wednesday
Low  tide  1.3 feet at  3:29 AM Thursday
High tide  1.9 feet at  8:41 AM Thursday
Low  tide  0.1 feet at  3:46 PM Thursday
High tide  1.9 feet at 11:08 PM Thursday

$$