FZPQ50 PGUM 090812 CCA SRFGUM Surf Zone Forecast for the Mariana Islands...CORRECTED National Weather Service Tiyan GU 612 PM ChST Thu Jul 9 2026 Corrected to increase surf along north facing reefs, and include them within the High Surf Advisory and High Rip Current Risk. .DISCUSSION...Significant west to southwest swells continue to emanate from distant Typhoon Bavi (09W) and its trailing monsoon pattern, maintaining hazardous surf and a high risk of rip currents along west and north facing reefs. So, the High Surf Advisory and High Rip Current Risk have been extended through Friday afternoon. As Bavi continues to pull away and the leading monsoon surge weakens, swells and associated surf will continue to diminish, potentially falling below hazardous levels by Friday night. Meanwhile, a moderate risk of rip currents continues along north and east facing reefs. $$ GUZ001-MPZ001>003-092230- Guam-Rota-Tinian-Saipan- 612 PM ChST Thu Jul 9 2026 ...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST FRIDAY ALONG NORTH, SOUTH, AND WEST FACING REEFS... ...HIGH RISK OF RIP CURRENTS THROUGH FRIDAY AFTERNOON ALONG NORTH, SOUTH, AND WEST FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 600 PM Thursday through 600 AM Saturday .TONIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............9 to 12 feet. East facing reefs............3 to 5 feet. South facing reefs............8 to 11 feet. West facing reefs............9 to 12 feet. Swell/Period Primary swell................West at 7 to 9 feet. Primary period...............11 seconds. Secondary swell..............Southwest at around 3 feet. Secondary period.............9 seconds. Water Temperature Tanapag buoy..........85 Degrees. Winds...............Northeast at around 10 mph. .FRIDAY... Rip Current Risk.....High *. Surf Height North facing reefs............7 to 10 feet. East facing reefs............3 to 5 feet. South facing reefs............7 to 9 feet. West facing reefs............7 to 10 feet. Swell/Period Primary swell................West at 6 to 9 feet. Primary period...............11 seconds. Secondary swell..............East at around 3 feet. Secondary period.............9 seconds. Max Heat Index.........Around 101. Winds...............Northeast at 10 to 15 mph. .FRIDAY NIGHT... Rip Current Risk.....Moderate *. Surf Height North facing reefs............6 to 8 feet. East facing reefs............3 to 5 feet. South facing reefs............5 to 8 feet. West facing reefs............6 to 8 feet. Swell/Period Primary swell................West at 6 to 8 feet. Primary period...............11 seconds. Secondary swell..............East at around 2 feet. Secondary period.............9 seconds. Winds...............Northeast at 10 to 15 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide 1.5 feet at 8:20 PM Thursday High tide 2.7 feet at 2:17 AM Friday Low tide 0.2 feet at 9:50 AM Friday High tide 2.2 feet at 5:12 PM Friday Low tide 1.8 feet at 9:32 PM Friday High tide 2.7 feet at 3:05 AM Saturday Low tide -0.1 feet at 10:47 AM Saturday At Rota Island... Low tide 1.5 feet at 8:14 PM Thursday High tide 2.5 feet at 2:14 AM Friday Low tide 0.2 feet at 9:44 AM Friday High tide 2.1 feet at 5:09 PM Friday Low tide 1.7 feet at 9:26 PM Friday High tide 2.5 feet at 3:02 AM Saturday Low tide -0.1 feet at 10:41 AM Saturday At Tinian Island... Low tide 0.5 feet at 7:57 PM Thursday High tide 2.0 feet at 2:15 AM Friday Low tide 0.1 feet at 9:27 AM Friday High tide 1.6 feet at 5:10 PM Friday Low tide0.6 feet at 9:09 PM Friday High tide 2.0 feet at 3:03 AM Saturday Low tide 0.0 feet at 10:24 AM Saturday At Tanapag Harbor, Saipan... Low tide 1.2 feet at 8:11 PM Thursday High tide 2.3 feet at 2:10 AM Friday Low tide -0.1 feet at 10:02 AM Friday High tide 1.8 feet at 5:39 PM Friday Low tide 1.5 feet at 9:20 PM Friday High tide 2.4 feet at 2:49 AM Saturday Low tide -0.4 feet at 10:53 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. Rip currents will be life threatening. If caught in a rip current, swim parallel to the beach rather than against the current. $$