FZPQ50 PGUM 031806 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 406 AM ChST Fri Jul 4 2025 .DISCUSSION...A moderate risk of rip currents is expected along east facing reefs of the Marianas through the weekend, with potential for the risk to become moderate along west facing reefs once a secondary westerly swell arrives in the first half of next week. $$ GUZ001-MPZ001>003-040915- Guam-Rota-Tinian-Saipan- 406 AM ChST Fri Jul 4 2025 36 hour Surf Zone Forecast for the Marianas from 600 AM Friday through 600 PM Saturday .TODAY... Rip Current Risk.....Moderate *. Surf Height North facing reefs............2 to 3 feet. East facing reefs............3 to 5 feet. South facing reefs............1 to 2 feet. West facing reefs............1 to 2 feet. Swell/Period Primary swell................East at 2 to 3 feet. Primary period...............9 seconds. Water Temperature Ritidian buoy..........86 Degrees. Max Heat Index.........Around 100. Winds...............Southeast at around 10 mph. .TONIGHT... Rip Current Risk.....Moderate *. Surf Height North facing reefs............2 to 3 feet. East facing reefs............3 to 5 feet. South facing reefs............1 to 2 feet. West facing reefs............1 to 2 feet. Swell/Period Primary swell................East at 2 to 3 feet. Primary period...............9 seconds. Winds...............Southeast at around 10 mph in the evening becoming light. .SATURDAY... Rip Current Risk.....Moderate *. Surf Height North facing reefs............2 to 3 feet. East facing reefs............3 to 5 feet. South facing reefs............1 to 2 feet. West facing reefs............1 to 2 feet. Swell/Period Primary swell................East at 2 to 4 feet. Primary period...............9 seconds. Max Heat Index.........Around 100. Winds...............Light and variable. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide 0.8 feet at 9:15 AM Friday High tide 1.9 feet at 3:45 PM Friday Low tide 1.5 feet at 8:18 PM Friday High tide 2.4 feet at 2:30 AM Saturday Low tide 0.6 feet at 10:00 AM Saturday High tide 2.0 feet at 5:15 PM Saturday At Rota Island... Low tide 0.8 feet at 9:09 AM Friday High tide 1.7 feet at 3:42 PM Friday Low tide 1.4 feet at 8:12 PM Friday High tide 2.3 feet at 2:27 AM Saturday Low tide 0.6 feet at 9:54 AM Saturday High tide 1.9 feet at 5:12 PM Saturday At Tinian Island... Low tide 0.4 feet at 9:07 AM Friday High tide 1.1 feet at 3:42 PM Friday Low tide 1.0 feet at 7:24 PM Friday High tide 1.7 feet at 1:48 AM Saturday Low tide 0.2 feet at 9:49 AM Saturday High tide 1.3 feet at 5:26 PM Saturday At Tanapag Harbor, Saipan... Low tide 0.5 feet at 9:38 AM Friday High tide 1.4 feet at 4:16 PM Friday Low tide 1.2 feet at 7:55 PM Friday High tide 2.1 feet at 2:27 AM Saturday Low tide 0.3 feet at 10:17 AM Saturday High tide 1.5 feet at 5:51 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. $$