FZPQ50 PGUM 161156 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 956 PM ChST Thu Apr 16 2026 .DISCUSSION... There will be a high risk of rip currents along south, west and north facing reefs for the next couple of days. Wind waves and swell produced by Typhoon Sinlaku will maintain hazardous surf along south, west and north facing reefs, along with coastal inundation of 1 to 2 feet. $$ GUZ001-170300- Guam- 956 PM ChST Thu Apr 16 2026 ...HIGH SURF WARNING IN EFFECT UNTIL 5 PM CHST FRIDAY ALONG SOUTH, WEST, AND NORTH FACCING REEFS... ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 5 PM CHST SATURDAY ALONG SOUTH, WEST, AND NORTH FACING SHORELINES ... ...HIGH RISK OF RIP CURRENTS THROUGH SATURDAY AFTERNOON ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...HIGH SURF ADVISORY IN EFFECT FROM 5 PM FRIDAY TO 5 PM CHST SATURDAY ALONG SOUTH, WEST, AND NORTH FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 600 PM Thursday through 600 AM Saturday .TONIGHT... Rip Current Risk.....High. Huge waves will produce deadly rip currents. Stay out of the water. Surf Height North facing reefs............12 to 17 feet. East facing reefs............5 to 7 feet. South facing reefs............12 to 17 feet. West facing reefs............12 to 17 feet. Swell/Period Primary swell................Northwest at 12 to 18 feet. Primary period...............11 seconds. Water Temperature Tanapag buoy..........80 Degrees. Winds...............Windy. Southwest at 20 to 30 mph. .FRIDAY... Rip Current Risk.....High. Huge waves will produce deadly rip currents. Stay out of the water. Surf Height North facing reefs............12 to 17 feet. East facing reefs............5 to 7 feet. South facing reefs............12 to 17 feet. West facing reefs............12 to 17 feet. Swell/Period Primary swell................Northwest at 12 to 17 feet. Primary period...............11 seconds. Max Heat Index.........Around 97. Winds...............West at around 20 mph. .FRIDAY NIGHT... Rip Current Risk.....High. Pounding surf will produce life threatening rip currents at reefs and beaches. Surf Height North facing reefs............13 to 16 feet. East facing reefs............4 to 6 feet. South facing reefs............13 to 16 feet. West facing reefs............13 to 16 feet. Swell/Period Primary swell................Northwest at 11 to 14 feet. Primary period...............11 seconds. Winds...............West at 15 to 20 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide 0.8 feet at 1:05 AM Friday High tide 2.5 feet at 6:56 AM Friday Low tide 0.1 feet at 1:33 PM Friday High tide 2.5 feet at 8:04 PM Friday Low tide 1.0 feet at 1:51 AM Saturday High tide 2.5 feet at 7:24 AM Saturday Low tide -0.2 feet at 2:14 PM Saturday $$ MPZ002-003-170300- Tinian-Saipan- 956 PM ChST Thu Apr 16 2026 ...COASTAL FLOOD WARNING IN EFFECT UNTIL NOON CHST FRIDAY ALONG SOUTH, WEST, AND NORTH FACING SHORELINES... ...HIGH SURF WARNING IN EFFECT UNTIL 5 PM CHST FRIDAY ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...HIGH RISK OF RIP CURRENTS THROUGH SATURDAY AFTERNOON ALONG SOUTH, WEST, NORTH FACING REEFS... ...TYPHOON WARNING IN EFFECT... ...COASTAL FLOOD ADVISORY IN EFFECT FROM NOON FRIDAY TO 5 PM CHST SATURDAY ALONG SOUTH, WEST, AND NORTH FACING SHORELINES... ...HIGH SURF ADVISORY IN EFFECT FROM 5 PM FRIDAY TO 5 PM CHST SATURDAY ALONG SOUTH, NORTH AND EAST FACING REEFS... The islands of Tinian, and Saipan are under a Typhoon Warning. Please see the latest TY Sinlaku Local Statement (WTPQ81 PGUM HLSPQ1) for more updated and detailed surf zone and hazard information. Tide information for the next 36 hours... At Tinian Island... Low tide 0.3 feet at 12:42 AM Friday High tide 1.9 feet at 6:54 AM Friday Low tide 0.0 feet at 1:10 PM Friday High tide 1.9 feet at 8:02 PM Friday Low tide 0.3 feet at 1:28 AM Saturday High tide 1.9 feet at 7:22 AM Saturday Low tide -0.1 feet at 1:51 PM Saturday At Tanapag Harbor, Saipan... Low tide 0.8 feet at 1:01 AM Friday High tide 2.2 feet at 6:54 AM Friday Low tide 0.0 feet at 1:34 PM Friday High tide 2.2 feet at 8:21 PM Friday Low tide 1.0 feet at 1:51 AM Saturday High tide 2.2 feet at 7:19 AM Saturday Low tide -0.3 feet at 2:17 PM Saturday $$ MPZ001-170300- Rota- 956 PM ChST Thu Apr 16 2026 ...HIGH SURF WARNING IN EFFECT UNTIL 5 PM CHST FRIDAY ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 5 PM CHST SATURDAY ALONG SOUTH, WEST, AND NORTH FACING SHORELINES... ...HIGH RISK OF RIP CURRENTS THROUGH SATURDAY AFTERNOON ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...TYPHOON WARNING IN EFFECT... ...HIGH SURF ADVISORY IN EFFECT FROM 5 PM FRIDAY TO 5 PM CHST SATURDAY ALONG SOUTH, WEST, AND NORTH FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 600 PM Thursday through 600 AM Saturday The island of Rota is under a Tropical Storm Warning. Please see the latest TY Sinlaku Local Statement (WTPQ81 PGUM HLSPQ1) for more updated and detailed surf zone and hazard information. Tide information for the next 36 hours... At Rota Island... Low tide 0.8 feet at 12:59 AM Friday High tide 2.4 feet at 6:53 AM Friday Low tide 0.1 feet at 1:27 PM Friday High tide 2.4 feet at 8:01 PM Friday Low tide 1.0 feet at 1:45 AM Saturday High tide 2.4 feet at 7:21 AM Saturday Low tide -0.2 feet at 2:08 PM Saturday * Low Risk of rip currents - Strong currents can still occur near jetties and reef channels. Always have a flotation device with you in the water. Moderate Risk of rip currents - Wave conditions support stronger or more frequent rip currents. Always have a flotation device with you in the water. High Risk of rip currents - Large waves will produce strong rip currents, especially along narrow reefs and beaches. Rip currents will be life threatening. If caught in a rip current, swim parallel to the beach rather than against the current. $$