713 SRFL50 KWAL 180708 140A005E 108070835":PP 8 #60 0.00 0.00 0.00 0.00 :TW 8 #60 26.07 26.15 26.24 26.32 :CSPZ 8 #60 50.72 50.69 50.68 50.67 :HP 2 #6 -0.178 -0.181 -0.179 -0.177 -0.178 -0.180 -0.179 -0.181 -0.180 -0.182 -0.186 -0.189 :BV 8 #60 12.90 12.92 12.93 12.95 :BL 12.50 :PWR 4.6/0.0 47+0NN 481E  356 SRFL50 KWAL 180708 140A26B2 108070846":PP 8 #60 0.00 0.00 0.00 0.00 :HP 2 #6 0.470 0.450 0.430 0.405 0.380 0.355 0.330 0.305 0.280 0.250 0.225 0.185 0.145 0.105 0.065 0.025 -0.014 -0.084 -0.134 -0.174 -0.229 -0.289 -0.344 -0.414 -0.484 -0.564 -0.644 -0.729 -0.819 -0.904 :CSPZ 8 #60 50.690 49.660 46.330 47.160 :TW 8 #60 25.54 25.60 25.77 25.87 :BV 8 #60 12.73 12.73 12.73 12.73 :BL 12.65 :PWR 5.0/0.8 47+0NN 481E  021 SRFL50 KWAL 180708 140A35C4 108070850":PP 8 #60 0.00 0.00 0.00 0.00 :HP 2 #6 -0.14 -0.14 -0.14 -0.14 -0.15 -0.15 -0.15 -0.15 -0.16 -0.16 -0.16 -0.16 -0.16 -0.16 -0.16 -0.17 -0.17 -0.17 -0.17 -0.17 -0.17 -0.17 -0.17 -0.18 :TW 8 #60 26.92 27.07 27.26 27.63 :CSPZ 8 #60 41.40 41.60 42.04 42.08 :BV 8 #60 12.86 12.87 12.87 12.90 :BL 12.38 :PWR 4.9/0.6 42+0NN 481E  745 SRFL50 KWAL 180709 140A5022 108070900":PP 9 #60 0.00 0.00 0.00 0.00 :HP 3 #6 -0.134 -0.134 -0.129 -0.129 -0.129 -0.129 -0.129 -0.134 -0.134 -0.129 -0.124 -0.129 -0.134 -0.134 -0.139 :TW 9 #60 27.51 27.70 27.88 28.12 :CSPZ 9 #60 52.170 52.090 52.050 52.020 :BV 9 #60 12.80 12.82 :WC 9 #60 53.07 53.06 :ST 9 #60 27.17 27.38 :WY 9 #60 1.23 1.15 :WO 9 #60 6.64 6.69 :DOM 9 #60 19.26 18.65 :BL 12.40 :PWR 13.4/0.0 43+0NN 481E  221 SRFL50 KWAL 180709 140A65B8 108070905":PP 9 #60 0.00 0.00 0.00 0.00 :HP 3 #6 -0.031 -0.029 -0.025 -0.023 -0.022 -0.022 -0.022 -0.024 -0.025 -0.024 -0.033 -0.038 -0.041 -0.046 -0.049 -0.048 -0.051 -0.056 -0.056 -0.056 -0.061 -0.057 -0.057 -0.063 :TW 9 #60 26.70 26.73 26.92 27.02 :CSPZ 9 #60 45.34 45.08 45.07 45.10 :BV 9 #60 12.90 12.92 12.94 12.96 :BL 12.21 :PWR 4.6/0.5 38+0NN 481E  325 SRFL50 KWAL 180709 140A76CE 108070910":BV 9 #60 13.16 :PP 9 #60 0.00 0.00 0.00 0.00 :HP 3 #6 1.079 1.054 1.039 1.004 0.964 0.939 0.909 0.859 0.794 0.739 0.689 0.634 0.569 0.499 0.434 0.384 0.309 0.239 0.184 0.139 0.079 0.009 -0.050 -0.095 :CSPZ 9 #60 57.620 57.670 57.720 57.710 :TW 9 #60 25.71 25.94 26.18 26.22 :BL 12.90 :PWR 13.2/0.0 46+0NN 481E  530 SRFL50 KWAL 180709 140AB3D0 108070930":PP 9 #60 0.00 0.00 0.00 0.00 :HP 3 #6 -0.378 -0.373 -0.363 -0.351 -0.341 -0.324 -0.311 -0.299 -0.268 -0.255 -0.237 -0.213 -0.190 -0.170 -0.143 :TW 9 #60 25.32 25.31 25.31 25.47 :CSPZ 9 #60 55.650 55.630 55.660 55.640 :BV 9 #60 12.84 12.85 :WC 9 #60 55.54 55.52 :ST 9 #60 25.29 25.28 :WY 9 #60 0.25 0.22 :WO 9 #60 6.35 6.17 :WT 9 #60 2.19 2.37 :BL 12.27 :PWR 4.4/0.0 32+0NN 481E  734 SRFL50 KWAL 180709 140A953C 108070920":PP 9 #60 0.00 0.00 0.00 0.00 :HP 3 #6 -0.10 -0.10 -0.11 -0.10 -0.11 -0.11 -0.12 -0.12 -0.13 -0.12 -0.13 -0.13 -0.13 -0.13 -0.14 -0.14 -0.14 -0.14 -0.15 -0.15 -0.16 -0.15 -0.16 -0.16 :TW 9 #60 26.59 26.63 26.82 26.91 :CSPZ 9 #60 45.55 45.66 45.15 45.13 :BV 9 #60 13.00 13.02 13.03 13.05 :BL 12.51 :PWR 5.2/0.5 39+0NN 481E  972 SRFL50 KWAL 180709 140AC540 108070935":PP 9 #60 0.00 0.00 0.00 0.00 :HP 3 #6 -0.158 -0.151 -0.155 -0.157 -0.162 -0.167 -0.170 -0.173 -0.173 -0.173 -0.176 -0.177 -0.182 -0.187 -0.187 -0.194 -0.194 -0.201 -0.203 -0.207 -0.208 -0.216 -0.221 -0.223 :TW 9 #60 26.55 26.93 27.36 27.37 :CSPZ 9 #60 47.32 47.21 45.59 44.88 :BV 9 #60 12.90 12.91 12.93 12.94 :BL 12.60 :PWR 5.9/0.5 44-0NN 481E  753 SRFL50 KWAL 180709 140AE3AC 108070945":PP 9 #60 0.00 0.00 0.00 0.00 :HP 3 #6 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 -0.364 :TW 9 #60 28.78 28.81 :CSPZ 9 #60 24.30 24.30 :BV 9 #60 12.972 12.987 :ST 9 #60 29.10 29.14 :WC 9 #60 24.42 24.37 :BL 12.52 :PWR 5.4/0.0 45+0NN 481E  049 SRFL50 KWAL 180709 140B02A4 108070955":HP 3 #6 1.013 0.990 0.960 0.928 0.891 0.861 0.819 0.783 0.729 0.676 0.628 0.575 0.510 0.455 0.391 0.323 0.278 0.221 0.159 0.103 0.072 0.018 -0.039 -0.104 -0.172 -0.269 -0.363 -0.482 -0.571 -0.684 :TW 9 #60 26.14 26.19 26.24 :CSPZ 9 #60 59.690 59.670 35.810 :PP 9 #60 0.00 0.00 0.00 :BV 9 #60 13.10 13.11 13.14 :BL 12.84 :PWR 4.4/0.0 42+0NN 481E  845 SRFL50 KWAL 180710 140B11D2 108071000":BV 10 #60 12.85 12.86 12.89 :HP 4 #6 -0.174 -0.189 -0.209 -0.224 -0.239 -0.254 -0.269 -0.274 -0.279 -0.284 -0.284 -0.284 -0.279 -0.279 -0.274 -0.264 -0.254 -0.249 -0.234 -0.229 -0.214 -0.204 -0.194 -0.184 -0.174 -0.164 -0.149 -0.139 -0.129 -0.119 :TW 10 #60 24.91 25.34 25.51 :CSPZ 10 #60 50.290 50.480 50.720 :PP 10 #60 0.00 0.00 0.00 :BL 12.24 :PWR 5.5/0.0 45+0NN 481E  636 SRFL50 KWAL 180719 FA8046B6 108071924`B1S@fT@fV@LR@LTBScBSvAksAlT@Cb@Cc@NL@NR@Bv@Bx@Bh@BiKjaKja@Lq@LqF 34+0NN 311E  711 SRFL50 KWAL 180719 FA8055C0 108071934`B1S@fb@ff@LY@LZBUGBU[AbhAbP@CX@CU@M]@MR@Af@Ac@Ag@AdKkwKkq@Lz@LyI 36+0NN 311E  305 SRFL50 KWAL 180719 FA80E64E 108071954`B1S@fW@f[@L|@L|B[XB[fAO\AQP@C^@CZ@NA@Mq@Ar@At@Ar@AtKm_KpP@L?@L?I 34+0NN 311E  707 SRFL50 KWAL 180720 FA80E89C 108072004`B1T////////////////////////////////////////////////////////////@jO~AfI 32-0NN 311E  655 FZPQ50 PGUM 180730 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 530 PM ChST Sat Apr 18 2026 .DISCUSSION...Seas, swells, and associated surf are gradually subsiding in the wake of Typhoon Sinlaku as it moves northward, well away from the Marianas. Hazardous surf and dangerous rip currents are expected through late Sunday night along south, west, and north facing reefs, with the highest surf expected along north and west reefs. Minor coastal inundation of 1 to 2 feet is expected to continue at Tinian and Saipan through Sunday morning. $$ GUZ001-MPZ001-182230- Guam-Rota- 530 PM ChST Sat Apr 18 2026 ...HIGH SURF ADVISORY IN EFFECT UNTIL 5 AM CHST MONDAY ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...HIGH RIP CURRENT RISK IN EFFECT THROUGH LATE SUNDAY NIGHT ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...COASTAL FLOOD ADVISORY IS NO LONGER IN EFFECT... 36 hour Surf Zone Forecast for the Marianas from 600 PM Saturday through 600 AM Monday .TONIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............10 to 14 feet. East facing reefs............6 to 8 feet. South facing reefs............8 to 12 feet. West facing reefs............10 to 14 feet. Swell/Period Primary swell................North at 7 to 10 feet. Primary period...............11 seconds. Secondary swell..............Southwest at around 4 feet. Secondary period.............9 seconds. Water Temperature Tanapag buoy..........80 Degrees. Winds...............West at around 10 mph. .SUNDAY... Rip Current Risk.....High *. Surf Height North facing reefs............10 to 13 feet. East facing reefs............5 to 8 feet. South facing reefs............7 to 10 feet. West facing reefs............10 to 12 feet. Swell/Period Primary swell................North at 7 to 10 feet. Primary period...............12 seconds. Secondary swell..............Southwest at around 3 feet. Secondary period.............9 seconds. Max Heat Index.........Around 95. Winds...............Light and variable becoming southwest 10 mph in the afternoon. .SUNDAY NIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............9 to 12 feet. East facing reefs............5 to 7 feet. South facing reefs............6 to 9 feet. West facing reefs............9 to 11 feet. Swell/Period Primary swell................North at 6 to 8 feet. Primary period...............12 seconds. Secondary swell..............Southwest at around 3 feet. Secondary period.............9 seconds. Winds...............Light and variable. Tide information for the next 36 hours... At Apra Harbor, Guam... High tide 2.6 feet at 9:00 PM Saturday Low tide 1.3 feet at 2:39 AM Sunday High tide 2.5 feet at 7:55 AM Sunday Low tide -0.4 feet at 3:00 PM Sunday High tide 2.6 feet at 9:59 PM Sunday Low tide 1.5 feet at 3:29 AM Monday High tide 2.5 feet at 8:30 AM Monday At Rota Island... High tide 2.4 feet at 8:57 PM Saturday Low tide 1.2 feet at 2:33 AM Sunday High tide 2.4 feet at 7:52 AM Sunday Low tide -0.4 feet at 2:54 PM Sunday High tide 2.4 feet at 9:56 PM Sunday Low tide 1.4 feet at 3:23 AM Monday High tide 2.4 feet at 8:27 AM Monday $$ MPZ002-003-182230- Tinian-Saipan- 530 PM ChST Sat Apr 18 2026 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 11 AM CHST SUNDAY ALONG SOUTH, WEST, AND NORTH FACING SHORELINES... ...HIGH SURF ADVISORY IN EFFECT UNTIL 5 AM CHST MONDAY ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...HIGH RIP CURRENT RISK IN EFFECT THROUGH LATE SUNDAY NIGHT ALONG SOUTH, WEST, AND NORTH FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 600 PM Saturday through 600 AM Monday .TONIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............11 to 14 feet. East facing reefs............6 to 8 feet. South facing reefs............8 to 12 feet. West facing reefs............10 to 14 feet. Swell/Period Primary swell................Northwest at 7 to 11 feet. Primary period...............12 seconds. Secondary swell..............Southwest at around 4 feet. Secondary period.............9 seconds. Water Temperature Tanapag buoy..........80 Degrees. Winds...............Southwest at 10 to 15 mph. .SUNDAY... Rip Current Risk.....High *. Surf Height North facing reefs............10 to 13 feet. East facing reefs............5 to 8 feet. South facing reefs............7 to 10 feet. West facing reefs............10 to 12 feet. Swell/Period Primary swell................North at 7 to 10 feet. Primary period...............12 seconds. Secondary swell..............Southwest at around 3 feet. Secondary period.............9 seconds. Max Heat Index.........Around 95. Winds...............Southwest at around 10 mph. .SUNDAY NIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............9 to 12 feet. East facing reefs............5 to 7 feet. South facing reefs............6 to 9 feet. West facing reefs............9 to 11 feet. Swell/Period Primary swell................North at 5 to 8 feet. Primary period...............12 seconds. Secondary swell..............Southwest at around 3 feet. Secondary period.............9 seconds. Winds...............Light and variable. Tide information for the next 36 hours... At Tinian Island... High tide 1.9 feet at 8:58 PM Saturday Low tide 0.4 feet at 2:16 AM Sunday High tide 1.9 feet at 7:53 AM Sunday Low tide -0.1 feet at 2:37 PM Sunday High tide 1.9 feet at 9:57 PM Sunday Low tide 0.5 feet at 3:06 AM Monday High tide 1.9 feet at 8:28 AM Monday At Tanapag Harbor, Saipan... High tide 2.3 feet at 9:22 PM Saturday Low tide 1.3 feet at 2:42 AM Sunday High tide 2.2 feet at 7:47 AM Sunday Low tide -0.5 feet at 3:02 PM Sunday High tide 2.3 feet at 10:27 PM Sunday Low tide 1.5 feet at 3:33 AM Monday High tide 2.2 feet at 8:17 AM Monday * 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. $$