FZPQ50 PGUM 030540 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 340 PM ChST Thu Jul 3 2025 .DISCUSSION...A moderate risk of rip currents is expected along east facing reefs of the Marianas for much of the week, 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>003-032000- Guam-Rota-Tinian-Saipan- 340 PM ChST Thu Jul 3 2025 36 hour Surf Zone Forecast for the Marianas from 600 PM Thursday through 600 AM Friday .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 3 feet. Primary period...............9 seconds. Water Temperature Ritidian buoy..........87 Degrees. Winds...............Southeast at around 10 mph. .FRIDAY... 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 3 feet. Primary period...............9 seconds. Max Heat Index.........Around 100. Winds...............Southeast at around 10 mph. .FRIDAY NIGHT... 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 3 feet. Primary period...............9 seconds. Winds...............Southeast at around 10 mph in the evening becoming light. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide 1.2 feet at 7:27 PM Thursday High tide 2.4 feet at 2:02 AM Friday 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 At Rota Island... Low tide 1.1 feet at 7:21 PM Thursday High tide 2.3 feet at 1:59 AM Friday 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 At Tinian Island... Low tide 0.8 feet at 6:44 PM Thursday High tide 1.7 feet at 1:28 AM Friday 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 At Tanapag Harbor, Saipan... Low tide 0.9 feet at 7:20 PM Thursday High tide 2.1 feet at 2:08 AM Friday 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 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. $$