


Surf Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
714 FZPQ50 PGUM 091821 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 421 AM ChST Mon Mar 10 2025 .SYNOPSIS...A moderate risk of rip currents is expected along north and east facing reefs of the Marianas for at least the next several days. $$ GUZ001-MPZ001>003-100930- Guam-Rota-Tinian-Saipan- 421 AM ChST Mon Mar 10 2025 36 hour Surf Zone Forecast for the Marianas from 600 AM Monday through 600 PM Tuesday .TODAY THROUGH TUESDAY... Rip current risk.....Moderate *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............6 to 8 feet. South facing reefs............1 to 3 feet. West facing reefs............1 to 3 feet. Swell/Period Primary swell................East at 4 to 6 feet. Primary period...............9 seconds. Secondary swell..............North at around 3 feet. Secondary period.............12 seconds. Water temperature Ritidian buoy..........83 Degrees. Maximum Afternoon Heat index.........Around 96. Coastal Winds...............Northeast at 15 to 20 mph. .OUTLOOK...Surf is expected to increase another foot or two for all reefs except south facing reefs by Wednesday. As this occurs, a High Risk Of Rip Currents will likely develop for east-facing reefs, with potentially hazardous surf developing for north-facing reefs. Tide information for the next 36 hours... At Apra Harbor, Guam... High tide 2.1 feet at 6:30 AM Monday Low tide 1.4 feet at 11:43 AM Monday High tide 2.0 feet at 4:24 PM Monday Low tide -0.2 feet at 11:48 PM Monday High tide 2.1 feet at 7:04 AM Tuesday Low tide 1.2 feet at 12:31 PM Tuesday At Rota Island... High tide 2.0 feet at 6:27 AM Monday Low tide 1.3 feet at 11:37 AM Monday High tide 1.8 feet at 4:21 PM Monday Low tide -0.2 feet at 11:42 PM Monday High tide 2.0 feet at 7:01 AM Tuesday Low tide 1.2 feet at 12:25 PM Tuesday At Tinian Island... High tide 1.6 feet at 6:03 AM Monday Low tide 1.3 feet at 10:27 AM Monday High tide 1.8 feet at 3:13 PM Monday Low tide -0.1 feet at 11:13 PM Monday High tide 1.6 feet at 6:37 AM Tuesday Low tide 1.2 feet at 11:20 AM Tuesday At Tanapag Harbor, Saipan... High tide 2.2 feet at 6:33 AM Monday Low tide 1.4 feet at 11:47 AM Monday High tide 1.9 feet at 4:36 PM Monday Low tide -0.1 feet at 11:46 PM Monday High tide 2.2 feet at 7:05 AM Tuesday Low tide 1.3 feet at 12:29 PM Tuesday * 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. $$