FZPQ50 PGUM 221806 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 406 AM ChST Mon Mar 23 2026 .DISCUSSION...There will be a high risk of rip currents along east facing reefs through Tuesday afternoon, with a moderate risk along north facing reefs. There will also be a moderate risk of lightning through Tuesday for Guam and Rota. $$ GUZ001-MPZ001>003-230915- Guam-Rota-Tinian-Saipan- 406 AM ChST Mon Mar 23 2026 ...HIGH RISK OF RIP CURRENTS THROUGH TUESDAY AFTERNOON ALONG EAST FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 600 AM Monday through 600 PM Tuesday .TODAY... Rip Current Risk.....High *. Surf Height North facing reefs............6 to 8 feet. East facing reefs............7 to 9 feet. South facing reefs............2 to 4 feet. West facing reefs............2 to 4 feet. Swell/Period Primary swell................Northeast at 5 to 7 feet. Primary period...............8 seconds. Secondary swell..............Northeast at around 3 feet. Secondary period.............12 seconds. Water Temperature Ipan buoy..........81 Degrees. Max Heat Index.........Around 96. Winds...............Breezy. East at 15 to 25 mph. .TONIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............5 to 7 feet. East facing reefs............8 to 10 feet. South facing reefs............2 to 4 feet. West facing reefs............2 to 4 feet. Swell/Period Primary swell................East at 6 to 8 feet. Primary period...............8 seconds. Secondary swell..............Northeast at around 3 feet. Secondary period.............11 seconds. Winds...............Breezy. Northeast at 10 to 25 mph. .TUESDAY... Rip Current Risk.....High *. Surf Height North facing reefs............5 to 7 feet. East facing reefs............8 to 10 feet. South facing reefs............2 to 4 feet. West facing reefs............2 to 4 feet. Swell/Period Primary swell................East at 6 to 8 feet. Primary period...............8 seconds. Secondary swell..............North at around 3 feet. Secondary period.............10 seconds. Max Heat Index.........Around 96. Winds...............Northeast at 10 to 20 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide 1.2 feet at 4:22 AM Monday High tide 2.4 feet at 9:44 AM Monday Low tide -0.3 feet at 4:58 PM Monday High tide 2.1 feet at 12:02 AM Tuesday Low tide 1.4 feet at 5:13 AM Tuesday High tide 2.3 feet at 10:22 AM Tuesday Low tide -0.3 feet at 5:56 PM Tuesday At Rota Island... Low tide 1.1 feet at 4:16 AM Monday High tide 2.2 feet at 9:41 AM Monday Low tide -0.3 feet at 4:52 PM Monday High tide 2.0 feet at 11:59 PM Monday Low tide 1.4 feet at 5:07 AM Tuesday High tide 2.2 feet at 10:19 AM Tuesday Low tide -0.3 feet at 5:50 PM Tuesday At Tinian Island... High tide 1.7 feet at 9:42 AM Monday Low tide -0.1 feet at 4:35 PM Monday High tide 1.6 feet at 12:00 AM Tuesday Low tide 0.5 feet at 4:50 AM Tuesday High tide 1.7 feet at 10:20 AM Tuesday Low tide -0.1 feet at 5:33 PM Tuesday High tide 1.5 feet at 1:30 AM Wednesday At Tanapag Harbor, Saipan... Low tide 1.3 feet at 4:24 AM Monday High tide 2.1 feet at 9:35 AM Monday Low tide -0.2 feet at 5:01 PM Monday High tide 2.1 feet at 12:39 AM Tuesday Low tide 1.6 feet at 5:23 AM Tuesday High tide 2.1 feet at 10:08 AM Tuesday Low tide -0.2 feet at 6:04 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. Rip currents will be life threatening. If caught in a rip current, swim parallel to the beach rather than against the current. $$