Surf Forecast Issued by NWS Tiyan, Guam
001
FZPQ50 PGUM 162005
SRFGUM
Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
605 AM ChST Sat Apr 17 2021
.SYNOPSIS...There will be a moderate risk of rip currents along
all exposures.
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GUZ001>004-170900-
Guam-Rota-Tinian-Saipan-
605 AM ChST Sat Apr 17 2021
36 hour Surf Zone Forecast for the Marianas from 600 AM Saturday
through 600 PM Sunday
.TODAY THROUGH SUNDAY (6 AM TO 6 PM SUNDAY)...
Coastal Winds............East at 10 to 15 mph...
becoming Northeast 10 to 15 mph tonight.
Surf along North facing reefs............3 to 5 feet.
Surf along East facing reefs............3 to 5 feet.
Surf along South facing reefs............3 to 5 feet.
Surf along West facing reefs............4 to 6 feet.
Primary swell...............Northeast at 3 to 5 feet.
Primary period..............11 seconds.
Secondary swell...............Southwest at around 3 feet.
Secondary period..............11 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 96.
.OUTLOOK...Surf along west and south facing reefs will continue to
rise due to long period swells from Typhoon Surigae.
Tide information for the next 36 hours...
At Apra Harbor, Guam...
High tide 2.0 feet at 9:40 AM Saturday
Low tide 0.1 feet at 5:00 PM Saturday
High tide 2.1 feet at 12:26 AM Sunday
Low tide 1.6 feet at 5:43 AM Sunday
High tide 2.0 feet at 10:14 AM Sunday
Low tide 0.1 feet at 5:47 PM Sunday
High tide 2.1 feet at 1:35 AM Monday
At Rota Island...
High tide 1.9 feet at 9:37 AM Saturday
Low tide 0.1 feet at 4:54 PM Saturday
High tide 2.0 feet at 12:23 AM Sunday
Low tide 1.5 feet at 5:37 AM Sunday
High tide 1.9 feet at 10:11 AM Sunday
Low tide 0.1 feet at 5:41 PM Sunday
High tide 2.0 feet at 1:32 AM Monday
At Tinian Island...
High tide 1.5 feet at 8:38 AM Saturday
Low tide 0.0 feet at 4:39 PM Saturday
High tide 1.5 feet at 1:37 AM Sunday
Low tide 1.3 feet at 5:44 AM Sunday
High tide 1.4 feet at 9:11 AM Sunday
Low tide 0.0 feet at 5:31 PM Sunday
High tide 1.5 feet at 2:39 AM Monday
At Tanapag Harbor, Saipan...
High tide 1.8 feet at 9:19 AM Saturday
Low tide 0.1 feet at 5:03 PM Saturday
High tide 2.0 feet at 1:06 AM Sunday
Low tide 1.6 feet at 6:00 AM Sunday
High tide 1.8 feet at 9:46 AM Sunday
Low tide 0.2 feet at 5:54 PM Sunday
High tide 2.0 feet at 2:08 AM Monday
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