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Surf Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
178 FZPQ50 PGUM 171940 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 540 AM ChST Sun Aug 18 2024 .SYNOPSIS...There will be a moderate risk of rip currents along east facing reefs of the Marianas and a moderate risk of lightning this week. $$ GUZ001-MPZ001>003-181045- Guam-Rota-Tinian-Saipan- 540 AM ChST Sun Aug 18 2024 36 hour Surf Zone Forecast for the Marianas from 600 AM Sunday through 600 PM Monday .TODAY (6 AM TO 6 PM)... Rip current risk.....Moderate *. Surf Height North facing reefs............2 to 4 feet. East facing reefs............5 to 7 feet. South facing reefs............2 to 4 feet. West facing reefs............Around 1 foot. Swell/Period Primary swell................East at 3 to 5 feet. Primary period...............8 seconds. Secondary swell..............Southeast at around 2 feet. Secondary period.............10 seconds. Water temperature Ritidian buoy..........86 Degrees. Maximum afternoon heat index...........Around 105. Coastal Winds............Southeast at 10 to 15 mph. .TONIGHT AND MONDAY (6 PM TO 6 PM MONDAY)... Rip current risk.....Moderate *. Surf Height North facing reefs............2 to 4 feet. East facing reefs............5 to 7 feet. South facing reefs............2 to 4 feet. West facing reefs............Around 1 foot. Swell/Period Primary swell................East at 3 to 5 feet. Primary period...............8 seconds. Secondary swell..............Southeast at around 2 feet. Secondary period.............10 seconds. Coastal Winds............East at 10 to 15 mph. .OUTLOOK...Little change through Wednesday, then surf along east facing reefs could diminish by 1 foot. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide -0.3 feet at 12:31 PM Sunday High tide 2.5 feet at 7:50 PM Sunday Low tide 1.7 feet at 12:57 AM Monday High tide 2.6 feet at 6:04 AM Monday Low tide -0.4 feet at 1:19 PM Monday High tide 2.6 feet at 8:22 PM Monday Low tide 1.5 feet at 1:42 AM Tuesday At Rota Island... Low tide -0.3 feet at 12:25 PM Sunday High tide 2.4 feet at 7:47 PM Sunday Low tide 1.6 feet at 12:51 AM Monday High tide 2.5 feet at 6:01 AM Monday Low tide -0.3 feet at 1:13 PM Monday High tide 2.4 feet at 8:19 PM Monday Low tide 1.4 feet at 1:36 AM Tuesday At Tinian Island... Low tide -0.4 feet at 12:06 PM Sunday High tide 1.6 feet at 7:45 PM Sunday Low tide 1.3 feet at 11:48 PM Sunday High tide 1.9 feet at 4:59 AM Monday Low tide -0.4 feet at 12:51 PM Monday High tide 1.6 feet at 8:09 PM Monday Low tide 1.2 feet at 12:45 AM Tuesday At Tanapag Harbor, Saipan... Low tide -0.4 feet at 12:36 PM Sunday High tide 2.2 feet at 8:16 PM Sunday Low tide 1.6 feet at 12:52 AM Monday High tide 2.2 feet at 5:55 AM Monday Low tide -0.5 feet at 1:26 PM Monday High tide 2.2 feet at 8:46 PM Monday Low tide 1.5 feet at 1:48 AM 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. $$