Surf Forecast
Issued by NWS Tiyan, Guam

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FZPQ50 PGUM 292257 AAA
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Surf Zone Forecast for the Mariana Islands...UPDATED
National Weather Service Tiyan GU
857 AM ChST Fri Jul 30 2021

Updated surf heights and swell for today

.SYNOPSIS...The risk of rip currents will be moderate along north
and west facing reefs today, and along west facing reefs tonight
through the weekend. There will also be a moderate risk of lightning
into early next week.

$$

GUZ001>004-301400-
Guam-Rota-Tinian-Saipan-
857 AM ChST Fri Jul 30 2021

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

.REST OF TODAY (6 AM TO 6 PM)...
Coastal Winds............Light and variable.
Surf along North facing reefs............3 to 5 feet.
Surf along East  facing reefs............2 to 4 feet.
Surf along South facing reefs............1 to 3 feet.
Surf along West  facing reefs............4 to 6 feet.
Primary swell...............Northwest at 2 to 3 feet.
Primary period..............9 seconds.
Secondary swell...............East at around 2 feet.
Secondary period..............9 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 Ipan buoy...86 Degrees.
Maximum afternoon heat index...........Around 97.

.TONIGHT AND SATURDAY (6 PM TO 6 PM SATURDAY)...
Coastal Winds............Light and variable becoming west around
                         10 mph Saturday.
Surf along North facing reefs............2 to 4 feet.
Surf along East  facing reefs............2 to 4 feet.
Surf along South facing reefs............1 to 3 feet.
Surf along West  facing reefs............3 to 5 feet.
Primary swell...............West at 2 to 3 feet.
Primary period..............9 seconds.
Secondary swell...............East at around 2 feet.
Secondary period..............9 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 Sunday.

Tide information for the next 36 hours...

At Tanapag Harbor, Saipan...
High tide  1.6 feet at 12:21 PM Friday
Low  tide  0.7 feet at  6:16 PM Friday
High tide  2.1 feet at 12:59 AM Saturday
Low  tide  0.8 feet at  7:56 AM Saturday
High tide  1.5 feet at  1:34 PM Saturday
Low  tide  0.9 feet at  6:51 PM Saturday
High tide  2.0 feet at  1:21 AM Sunday

At Apra Harbor, Guam...
High tide  2.0 feet at 11:56 AM Friday
Low  tide  0.9 feet at  6:10 PM Friday
High tide  2.4 feet at 12:41 AM Saturday
Low  tide  1.0 feet at  7:30 AM Saturday
High tide  1.9 feet at  1:19 PM Saturday
Low  tide  1.2 feet at  6:53 PM Saturday
High tide  2.3 feet at  1:11 AM Sunday

At Rota Island...
High tide  1.9 feet at 11:53 AM Friday
Low  tide  0.9 feet at  6:04 PM Friday
High tide  2.2 feet at 12:38 AM Saturday
Low  tide  0.9 feet at  7:24 AM Saturday
High tide  1.8 feet at  1:16 PM Saturday
Low  tide  1.1 feet at  6:47 PM Saturday
High tide  2.2 feet at  1:08 AM Sunday

At Tinian Island...
High tide  1.3 feet at 11:40 AM Friday
Low  tide  0.7 feet at  5:54 PM Friday
High tide  1.6 feet at 12:20 AM Saturday
Low  tide  0.6 feet at  7:17 AM Saturday
High tide  1.2 feet at  1:37 PM Saturday
Low  tide  0.9 feet at  6:36 PM Saturday
High tide  1.6 feet at 12:49 AM Sunday

$$


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