320
FZPQ50 PGUM 220747
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
547 PM ChST Wed May 22 2024

.SYNOPSIS...A high risk of rip currents along east facing reefs will
continue into early Thursday morning. Elsewhere, there will be a
moderate risk of rip currents along north facing reefs and a low
risk along south and west facing reefs.

$$

GUZ001-MPZ001>003-222100-
Guam-Rota-Tinian-Saipan-
547 PM ChST Wed May 22 2024

...HIGH RISK OF RIP CURRENTS ALONG EAST FACING REEFS UNTIL 6 AM
THURSDAY MORNING...

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

.TONIGHT (6 PM TO 6 AM THURSDAY)...
Rip current risk.....High *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 6 to 8 feet.
      Primary period...............9 seconds.
      Secondary swell..............Northeast at around 4 feet.
      Secondary period.............14 seconds.
Water temperature
      MODIS Satellite..........84 Degrees.
Coastal Winds............East at 10 to 20 mph.

.THURSDAY (6 AM TO 6 PM THURSDAY)...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 5 to 7 feet.
      Primary period...............9 seconds.
      Secondary swell..............Northeast at around 3 feet.
      Secondary period.............14 seconds.
Maximum afternoon heat index...........Around 102.
Coastal Winds............East at 15 to 20 mph.

.THURSDAY NIGHT (6 PM TO 6 AM FRIDAY)...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............5 to 7 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 4 to 5 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at 3 to 4 ft.
      Secondary period.............12 seconds.
Coastal Winds............East at 10 to 20 mph.

.OUTLOOK...Surf will fall another 1 to 2 feet along north and east
facing reefs late this week and into the weekend. Thunderstorms
anticipated to spread northward into southern Guam waters late week
could bring a slight risk of lightning Thursday night through Friday
night.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.4 feet at  8:06 PM Wednesday
Low  tide  1.6 feet at  1:16 AM Thursday
High tide  2.4 feet at  6:22 AM Thursday
Low  tide -0.1 feet at  1:36 PM Thursday
High tide  2.4 feet at  8:50 PM Thursday
Low  tide  1.7 feet at  2:03 AM Friday

At Rota Island...
High tide  2.2 feet at  8:03 PM Wednesday
Low  tide  1.5 feet at  1:10 AM Thursday
High tide  2.3 feet at  6:19 AM Thursday
Low  tide -0.1 feet at  1:30 PM Thursday
High tide  2.3 feet at  8:47 PM Thursday
Low  tide  1.6 feet at  1:57 AM Friday

At Tinian Island...
High tide  1.6 feet at  8:05 PM Wednesday
Low  tide  1.4 feet at 12:17 AM Thursday
High tide  1.8 feet at  5:17 AM Thursday
Low  tide -0.1 feet at  1:12 PM Thursday
High tide  1.7 feet at  8:58 PM Thursday
Low  tide  1.5 feet at  1:05 AM Friday

At Tanapag Harbor, Saipan...
High tide  1.9 feet at  8:29 PM Wednesday
Low  tide  1.5 feet at 12:47 AM Thursday
High tide  2.1 feet at  6:06 AM Thursday
Low  tide -0.2 feet at  1:42 PM Thursday
High tide  2.1 feet at  9:18 PM Thursday
Low  tide  1.7 feet at  1:48 AM Friday

* Low Risk of rip currents - Strong currents can still occur near
jetties and reef channels. Always have a flotation device with you
in the water.

Moderate Risk of rip currents - Wave conditions support stronger
or more frequent rip currents. Always have a flotation device with
you in the water.

High Risk of rip currents - Large waves will produce strong rip
currents, especially along narrow reefs and beaches. If caught in
a rip current, swim parallel to the beach rather than against the
current.

$$