FZPQ50 PGUM 210648 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 448 PM ChST Fri Jun 21 2024 .SYNOPSIS...A moderate risk of rip currents will persist along east facing reefs while remaining low along all other reefs. A moderate risk for lightning for Guam expected tonight. $$ GUZ001-MPZ001>003-212200- Guam-Rota-Tinian-Saipan- 448 PM ChST Fri Jun 21 2024 36 hour Surf Zone Forecast for the Marianas from 600 PM Friday through 600 AM Sunday .TONIGHT THROUGH SATURDAY NIGHT (6 PM TO 6 AM SUNDAY)... Rip current risk.....Moderate *. Surf Height North facing reefs............2 to 4 feet. East facing reefs............3 to 5 feet. South facing reefs............1 to 3 feet. West facing reefs............1 to 3 feet. Swell/Period Primary swell................East at 3 to 4 feet. Primary period...............8 seconds. Secondary swell..............Northeast at 1 to 2 feet. Secondary period.............8 seconds. Water temperature Ritidian buoy................85 Degrees. Coastal Winds............East at 5 to 15 mph tonight, increasing to 10 to 20 mph on Saturday .OUTLOOK...Surf looks to rise beginning Sunday night and continue through the middle of next week as the trade swell increases, with the rip risk possibly becoming moderate along north facing reefs while remaining moderate along east facing reefs. Tide information for the next 36 hours... At Apra Harbor, Guam... 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 Low tide 2.0 feet at 2:32 AM Sunday At Rota Island... 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 Low tide 1.9 feet at 2:26 AM Sunday At Tinian Island... 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 Low tide 1.6 feet at 1:22 AM Sunday At Tanapag Harbor, Saipan... 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 tide 1.9 feet at 2:42 AM Sunday * 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. $$