FZPQ50 PGUM 160506 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 306 PM ChST Fri Oct 16 2026 .DISCUSSION...There will be a moderate risk of rip currents through late tonight. The rip risk will then start rising rapidly, with dangerous rip currents and surf likely Saturday through Sunday, with surf heights up to 25 feet. There will also be a high risk of lightning Saturday night through Monday. Coastal flooding is possible along all reefs, depending on actual track of TS Champi. $$ GUZ001-MPZ001-161300- Guam-Rota- 306 PM ChST Fri Oct 16 2026 ...TYPHOON WARNING NOW IN EFFECT... ...HIGH SURF WARNING IN EFFECT FROM 5 PM SATURDAY TO 4 AM CHST MONDAY ALONG EAST FACING REEFS... ...COASTAL FLOOD WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE SUNDAY NIGHT ALONG ALL REEFS... The islands of Guam and Rota are now under a Typhoon Warning. Please refer to the Tropical Cyclone Local Statement WTPQ82 PGUM (HLSPQ2) for more updated and detailed surf zone and hazard information. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide 1.6 feet at 5:35 PM Friday High tide 1.9 feet at 9:39 PM Friday Low tide 0.0 feet at 5:31 AM Saturday High tide 1.9 feet at 1:44 PM Saturday Low tide 1.6 feet at 6:48 PM Saturday High tide 1.8 feet at 10:21 PM Saturday Low tide 0.1 feet at 6:27 AM Sunday At Rota Island... Low tide 1.5 feet at 5:29 PM Friday High tide 1.7 feet at 9:36 PM Friday Low tide 0.0 feet at 5:25 AM Saturday High tide 1.8 feet at 1:41 PM Saturday Low tide 1.5 feet at 6:42 PM Saturday High tide 1.7 feet at 10:18 PM Saturday Low tide 0.1 feet at 6:21 AM Sunday $$ MPZ002-003-161300- Tinian-Saipan- 306 PM ChST Fri Oct 16 2026 ...TROPICAL STORM WARNING NOW IN EFFECT... ...HIGH SURF WARNING IN EFFECT FROM 5 PM SATURDAY TO 4 AM CHST MONDAY ALONG EAST FACING REEFS... ...COASTAL FLOOD WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE SUNDAY NIGHT ALONG ALL REEFS... The islands of Tinian and Saipan are now under a Tropical Storm Warning and Typhoon Watch. Please refer to the Tropical Cyclone Local Statement WTPQ82 PGUM (HLSPQ2) for more updated and detailed surf zone and hazard information. Tide information for the next 36 hours... At Tinian Island... Low tide 0.5 feet at 5:12 PM Friday High tide 1.4 feet at 9:37 PM Friday Low tide 0.0 feet at 5:08 AM Saturday High tide 1.4 feet at 1:42 PM Saturday Low tide 0.5 feet at 6:25 PM Saturday High tide 1.3 feet at 10:19 PM Saturday Low tide 0.0 feet at 6:04 AM Sunday At Tanapag Harbor, Saipan... High tide 1.9 feet at 1:00 PM Friday Low tide 1.7 feet at 5:44 PM Friday High tide 1.8 feet at 9:16 PM Friday Low tide 0.2 feet at 5:44 AM Saturday High tide 1.9 feet at 2:02 PM Saturday Low tide 1.7 feet at 7:08 PM Saturday High tide 1.7 feet at 9:38 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. Rip currents will be life threatening. If caught in a rip current, swim parallel to the beach rather than against the current. $$