Surf Forecast
Issued by NWS Tiyan, Guam

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843 FZPQ50 PGUM 201945 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 545 AM ChST Fri Jun 21 2024 .SYNOPSIS...There will be a moderate risk of rip currents along east facing reefs of the Marianas along east facing reefs today. This will become a low risk along all reefs tonight, which will continue through Saturday night. The moderate risk will then return to east facing reefs through the middle of next week. $$ GUZ001-MPZ001>003-211045- Guam-Rota-Tinian-Saipan- 545 AM ChST Fri Jun 21 2024 36 hour Surf Zone Forecast for the Marianas from 600 AM Friday through 600 PM Saturday .TODAY (6 AM TO 6 PM)... Rip current risk.....Moderate *. Surf Height North facing reefs............1 to 3 feet. East facing reefs............3 to 5 feet. South facing reefs............1 to 3 feet. West facing reefs............Around 1 foot. Swell/Period Primary swell................East at 2 to 4 feet. Primary period...............7 seconds. Water temperature Ritidian buoy..........85 Degrees. Maximum afternoon heat index...........Around 100. Coastal Winds............East at around 10 mph. .TONIGHT AND SATURDAY (6 PM TO 6 PM SATURDAY)... Rip current risk.....Low *. Surf Height North facing reefs............1 to 2 feet. East facing reefs............2 to 4 feet. South facing reefs............1 to 2 feet. West facing reefs............Around 1 foot. Swell/Period Primary swell................East at 2 to 3 feet. Primary period...............7 seconds. Maximum afternoon heat index...........Around 101. Coastal Winds............East at 10 to 15 mph. .OUTLOOK...Surf will build 1 foot along all except west facing reefs Sunday, then will build further along east facing reefs Monday and Tuesday, possibly reaching 6 to 8 feet. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide -0.2 feet at 1:12 PM Friday High tide 2.5 feet at 8:45 PM Friday Low tide 1.9 feet at 1:44 AM Saturday High tide 2.5 feet at 6:22 AM Saturday Low tide -0.4 feet at 1:55 PM Saturday High tide 2.6 feet at 9:28 PM Saturday At Rota Island... Low tide -0.2 feet at 1:06 PM Friday High tide 2.4 feet at 8:42 PM Friday Low tide 1.8 feet at 1:38 AM Saturday High tide 2.4 feet at 6:19 AM Saturday Low tide -0.3 feet at 1:49 PM Saturday High tide 2.4 feet at 9:25 PM Saturday At Tinian Island... Low tide -0.3 feet at 12:50 PM Friday High tide 1.7 feet at 9:01 PM Friday Low tide 1.6 feet at 12:28 AM Saturday High tide 1.9 feet at 5:10 AM Saturday Low tide -0.4 feet at 1:33 PM Saturday High tide 1.7 feet at 9:48 PM Saturday At Tanapag Harbor, Saipan... Low tide -0.4 feet at 1:20 PM Friday High tide 2.1 feet at 9:21 PM Friday Low tide 1.9 feet at 1:30 AM Saturday High tide 2.2 feet at 5:51 AM Saturday Low tide -0.5 feet at 2:05 PM Saturday High tide 2.2 feet at 10:07 PM Saturday * 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. $$