FZPQ50 PGUM 181859 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 459 AM ChST Tue May 19 2026 .DISCUSSION...There is a high risk of rip currents along east-facing reefs due to the elevated easterly trade swell, which is expected to continue through this afternoon. A moderate risk of rip currents along north-facing reefs will continue at least through the first half of this week. $$ GUZ001-MPZ001>003-191000- Guam-Rota-Tinian-Saipan- 459 AM ChST Tue May 19 2026 ...HIGH RISK OF RIP CURRENTS UNTIL 4 PM CHST THIS AFTERNOON ALONG EAST FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 600 AM Tuesday through 600 PM Wednesday .TODAY... Rip Current Risk.....High *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............7 to 9 feet. South facing reefs............2 to 3 feet. West facing reefs............1 to 2 feet. Swell/Period Primary swell................East at 5 to 7 feet. Primary period...............9 seconds. Water Temperature Tanapag buoy..........84 Degrees. Max Heat Index.........Around 98. Winds...............East at 15 to 20 mph. .TONIGHT... Rip Current Risk.....Moderate *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............6 to 8 feet. South facing reefs............2 to 3 feet. West facing reefs............1 to 2 feet. Swell/Period Primary swell................East at 4 to 6 feet. Primary period...............8 seconds. Winds...............East at 10 to 20 mph. .WEDNESDAY... Rip Current Risk.....Moderate *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............6 to 8 feet. South facing reefs............2 to 3 feet. West facing reefs............1 to 2 feet. Swell/Period Primary swell................East at 4 to 6 feet. Primary period...............8 seconds. Winds...............East at 10 to 20 mph. Max Heat Index.........Around 100. Winds...............East at 15 to 20 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... High tide 2.7 feet at 8:03 AM Tuesday Low tide -0.7 feet at 3:37 PM Tuesday High tide 2.7 feet at 11:09 PM Tuesday Low tide 1.9 feet at 4:21 AM Wednesday High tide 2.6 feet at 8:52 AM Wednesday Low tide -0.6 feet at 4:32 PM Wednesday High tide 2.6 feet at 12:12 AM Thursday At Rota Island... High tide 2.5 feet at 8:00 AM Tuesday Low tide -0.6 feet at 3:31 PM Tuesday High tide 2.5 feet at 11:06 PM Tuesday Low tide 1.8 feet at 4:15 AM Wednesday High tide 2.4 feet at 8:49 AM Wednesday Low tide -0.5 feet at 4:26 PM Wednesday High tide 2.4 feet at 12:09 AM Thursday At Tinian Island... High tide 2.0 feet at 8:01 AM Tuesday Low tide -0.2 feet at 3:14 PM Tuesday High tide 2.0 feet at 11:07 PM Tuesday Low tide 0.6 feet at 3:58 AM Wednesday High tide 1.9 feet at 8:50 AM Wednesday Low tide -0.2 feet at 4:09 PM Wednesday High tide 1.9 feet at 12:10 AM Thursday At Tanapag Harbor, Saipan... High tide 2.3 feet at 7:44 AM Tuesday Low tide -0.8 feet at 3:40 PM Tuesday High tide 2.5 feet at 11:46 PM Tuesday Low tide 1.9 feet at 4:44 AM Wednesday High tide 2.2 feet at 8:34 AM Wednesday Low tide -0.7 feet at 4:35 PM Wednesday High tide 2.5 feet at 12:41 AM Thursday * 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. $$