FZPQ50 PGUM 160726 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 526 PM ChST Mon Sep 16 2024 .SYNOPSIS...There will be a high risk of rip currents along south and west facing reefs of the Marianas through tonight, before dropping down to moderate along said reefs. A moderate risk of rip currents is expected to persist along north and east facing reefs for at least several days. $$ GUZ001-MPZ001>003-162200- Guam-Rota-Tinian-Saipan- 526 PM ChST Mon Sep 16 2024 ...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM CHST TUESDAY... 36 hour Surf Zone Forecast for the Marianas from 600 PM Monday through 600 AM Wednesday .TONIGHT (6 PM TO 6 AM TUESDAY)... Rip current risk.....High. Pounding surf will produce life threatening rip currents at reefs and beaches. Surf Height North facing reefs............4 to 6 feet. East facing reefs............4 to 6 feet. South facing reefs............9 to 11 feet. West facing reefs............10 to 12 feet. Swell/Period Primary swell................Southwest at 7 to 11 feet. Primary period...............9 seconds. Secondary swell..............East at around 3 feet. Secondary period.............8 seconds. Water temperature Ritidian buoy..........86 Degrees. Coastal Winds............Damaging winds. South at 25 to 40 mph, becoming 15 to 20 mph late tonight. .TUESDAY (6 AM TO 6 PM)... Rip current risk.....High. Pounding surf will produce life threatening rip currents at reefs and beaches. Surf Height North facing reefs............5 to 7 feet. East facing reefs............4 to 6 feet. South facing reefs............7 to 9 feet. West facing reefs............8 to 10 feet. Swell/Period Primary swell................Southwest at 6 to 8 feet. Primary period...............9 seconds. Secondary swell..............East at around 3 feet. Secondary period.............8 seconds. Maximum afternoon heat index...........Around 97. Coastal Winds............South at 15 to 20 mph. .TUESDAY NIGHT (6 PM TO 6 AM WEDNESDAY)... Rip current risk.....Moderate *. Surf Height North facing reefs............3 to 5 feet. East facing reefs............3 to 5 feet. South facing reefs............5 to 8 feet. West facing reefs............5 to 8 feet. Swell/Period Primary swell................Southwest at 5 to 6 feet. Primary period...............9 seconds. Secondary swell..............East at around 3 feet. Secondary period.............8 seconds. Coastal Winds............Southeast at 10 to 15 mph. .OUTLOOK...Surf along south and west facing reefs will subside another 1 to 2 feet Wednesday. Tide information for the next 36 hours... At Apra Harbor, Guam... High tide 2.5 feet at 7:03 PM Monday Low tide 1.2 feet at 12:37 AM Tuesday High tide 2.6 feet at 6:04 AM Tuesday Low tide -0.1 feet at 12:53 PM Tuesday High tide 2.6 feet at 7:31 PM Tuesday Low tide 0.9 feet at 1:20 AM Wednesday At Rota Island... High tide 2.4 feet at 7:00 PM Monday Low tide 1.2 feet at 12:31 AM Tuesday High tide 2.4 feet at 6:01 AM Tuesday Low tide -0.1 feet at 12:47 PM Tuesday High tide 2.4 feet at 7:28 PM Tuesday Low tide 0.9 feet at 1:14 AM Wednesday At Tinian Island... High tide 1.6 feet at 6:40 PM Monday Low tide 1.0 feet at 11:44 PM Monday High tide 1.7 feet at 5:06 AM Tuesday Low tide -0.2 feet at 12:18 PM Tuesday High tide 1.6 feet at 7:02 PM Tuesday Low tide 0.7 feet at 12:37 AM Wednesday At Tanapag Harbor, Saipan... High tide 2.2 feet at 7:18 PM Monday Low tide 1.2 feet at 12:32 AM Tuesday High tide 2.2 feet at 6:06 AM Tuesday Low tide -0.2 feet at 12:57 PM Tuesday High tide 2.2 feet at 7:46 PM Tuesday Low tide 0.9 feet at 1:21 AM Wednesday * 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. $$