EXTRA-TROPICAL  STORM  SURGE
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hat-on
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Surge List
West Coast
#Port Townsend, WA : 04/20/2026 08:21:12 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/18 12Z,   0.30,   8.60,   8.96,  99.90,   0.06,  (max)
04/18 13Z,   0.40,   7.82,   8.19,  99.90,  -0.03,
04/18 14Z,   0.40,   6.12,   6.48,  99.90,  -0.04,
04/18 15Z,   0.40,   3.78,   3.96,  99.90,  -0.22,
04/18 16Z,   0.40,   1.28,   1.45,  99.90,  -0.23,
04/18 17Z,   0.40,  -0.72,  -0.54,  99.90,  -0.22,
04/18 18Z,   0.40,  -1.68,  -1.40,  99.90,  -0.12,  (min)
04/18 19Z,   0.40,  -1.42,  -1.05,  99.90,  -0.03,
04/18 20Z,   0.40,  -0.23,   0.14,  99.90,  -0.03,
04/18 21Z,   0.50,   1.44,   1.40,  99.90,  -0.54,
04/18 22Z,   0.50,   3.32,   3.16,  99.90,  -0.66,
04/18 23Z,   0.50,   5.24,   5.12,  99.90,  -0.62,
04/19 00Z,   0.50,   6.97,   6.98,  99.90,  -0.49,
04/19 01Z,   0.50,   8.16,   8.03,  99.90,  -0.63,
04/19 02Z,   0.60,   8.58,   8.39,  99.90,  -0.79,  (max)
04/19 03Z,   0.50,   8.24,   8.32,  99.90,  -0.42,
04/19 04Z,   0.50,   7.37,   7.59,  99.90,  -0.28,
04/19 05Z,   0.50,   6.38,   6.71,  99.90,  -0.17,
04/19 06Z,   0.50,   5.72,   6.03,  99.90,  -0.19,  (min)
04/19 07Z,   0.50,   5.69,   6.12,  99.90,  -0.07,
04/19 08Z,   0.50,   6.22,   6.72,  99.90,  -0.00,
04/19 09Z,   0.50,   7.00,   7.39,  99.90,  -0.11,
04/19 10Z,   0.50,   7.75,   8.19,  99.90,  -0.06,
04/19 11Z,   0.50,   8.38,   8.84,  99.90,  -0.04,
04/19 12Z,   0.40,   8.70,   9.30,  99.90,   0.20,  (max)
04/19 13Z,   0.50,   8.39,   8.85,  99.90,  -0.04,
04/19 14Z,   0.50,   7.19,   7.68,  99.90,  -0.01,
04/19 15Z,   0.50,   5.13,   5.47,  99.90,  -0.16,
04/19 16Z,   0.50,   2.57,   2.83,  99.90,  -0.24,
04/19 17Z,   0.50,   0.07,   0.26,  99.90,  -0.31,
04/19 18Z,   0.50,  -1.73,  -1.39,  99.90,  -0.16,
04/19 19Z,   0.50,  -2.37,  -1.96,  99.90,  -0.09,  (min)
04/19 20Z,   0.50,  -1.80,  -1.40,  99.90,  -0.10,
04/19 21Z,   0.50,  -0.39,  -0.03,  99.90,  -0.14,
04/19 22Z,   0.50,   1.43,   1.36,  99.90,  -0.57,
04/19 23Z,   0.50,   3.42,   3.39,  99.90,  -0.53,
04/20 00Z,   0.60,   5.43,   5.58,  99.90,  -0.45,
04/20 01Z,   0.60,   7.19,   7.37,  99.90,  -0.42,
04/20 02Z,   0.70,   8.38,   8.45,  99.90,  -0.63,
04/20 03Z,   0.60,   8.79,   8.81,  99.90,  -0.58,
04/20 04Z,   0.60,   8.49,   8.87,  99.90,  -0.22,  (max)
04/20 05Z,   0.60,   7.72,   8.21,  99.90,  -0.11,
04/20 06Z,   0.60,   6.89,   7.42,  99.90,  -0.07,
04/20 07Z,   0.60,   6.40,   6.83,  99.90,  -0.17,  (min)
04/20 08Z,   0.50,   6.47,   7.10,  99.90,   0.13,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 09Z,   0.50,   6.96,  99.90,   7.56,   0.10,
04/20 10Z,   0.50,   7.58,  99.90,   8.15,   0.07,
04/20 11Z,   0.60,   8.13,  99.90,   8.77,   0.04,
04/20 12Z,   0.60,   8.52,  99.90,   9.13,   0.01,
04/20 13Z,   0.60,   8.58,  99.90,   9.15,  -0.02,  (max)
04/20 14Z,   0.60,   7.97,  99.90,   8.52,  -0.05,
04/20 15Z,   0.50,   6.50,  99.90,   6.91,  -0.09,
04/20 16Z,   0.60,   4.27,  99.90,   4.75,  -0.12,
04/20 17Z,   0.60,   1.71,  99.90,   2.16,  -0.15,
04/20 18Z,   0.60,  -0.64,  99.90,  -0.21,  -0.18,
04/20 19Z,   0.60,  -2.17,  99.90,  -1.78,  -0.21,
04/20 20Z,   0.60,  -2.54,  99.90,  -2.18,  -0.24,  (min)
04/20 21Z,   0.60,  -1.78,  99.90,  -1.42,  -0.24,
04/20 22Z,   0.60,  -0.30,  99.90,   0.06,  -0.24,
04/20 23Z,   0.60,   1.52,  99.90,   1.88,  -0.24,
04/21 00Z,   0.60,   3.51,  99.90,   3.86,  -0.24,
04/21 01Z,   0.70,   5.51,  99.90,   5.96,  -0.24,
04/21 02Z,   0.70,   7.24,  99.90,   7.70,  -0.24,
04/21 03Z,   0.70,   8.40,  99.90,   8.85,  -0.24,
04/21 04Z,   0.70,   8.82,  99.90,   9.28,  -0.24,  (max)
04/21 05Z,   0.70,   8.59,  99.90,   9.05,  -0.24,
04/21 06Z,   0.70,   7.96,  99.90,   8.42,  -0.24,
04/21 07Z,   0.70,   7.28,  99.90,   7.73,  -0.24,
04/21 08Z,   0.70,   6.89,  99.90,   7.35,  -0.24,  (min)
04/21 09Z,   0.70,   6.97,  99.90,   7.42,  -0.24,
04/21 10Z,   0.70,   7.34,  99.90,   7.80,  -0.24,
04/21 11Z,   0.70,   7.78,  99.90,   8.23,  -0.24,
04/21 12Z,   0.80,   8.13,  99.90,   8.69,  -0.24,
04/21 13Z,   0.70,   8.34,  99.90,   8.80,  -0.24,  (max)
04/21 14Z,   0.70,   8.22,  99.90,   8.67,  -0.24,
04/21 15Z,   0.70,   7.44,  99.90,   7.90,  -0.24,
04/21 16Z,   0.80,   5.87,  99.90,   6.43,  -0.24,
04/21 17Z,   0.80,   3.68,  99.90,   4.24,  -0.24,
04/21 18Z,   0.70,   1.28,  99.90,   1.74,  -0.24,
04/21 19Z,   0.70,  -0.80,  99.90,  -0.34,  -0.24,
04/21 20Z,   0.70,  -2.08,  99.90,  -1.62,  -0.24,
04/21 21Z,   0.70,  -2.26,  99.90,  -1.81,  -0.24,  (min)
04/21 22Z,   0.70,  -1.46,  99.90,  -1.01,  -0.24,
04/21 23Z,   0.70,  -0.05,  99.90,   0.41,  -0.24,
04/22 00Z,   0.70,   1.67,  99.90,   2.12,  -0.24,
04/22 01Z,   0.70,   3.56,  99.90,   4.02,  -0.24,
04/22 02Z,   0.70,   5.48,  99.90,   5.94,  -0.24,
04/22 03Z,   0.70,   7.15,  99.90,   7.61,  -0.24,
04/22 04Z,   0.70,   8.27,  99.90,   8.73,  -0.24,
04/22 05Z,   0.70,   8.73,  99.90,   9.18,  -0.24,  (max)
04/22 06Z,   0.80,   8.60,  99.90,   9.16,  -0.24,
04/22 07Z,   0.70,   8.09,  99.90,   8.55,  -0.24,
04/22 08Z,   0.70,   7.50,  99.90,   7.96,  -0.24,
04/22 09Z,   0.70,   7.14,  99.90,   7.60,  -0.24,  (min)
04/22 10Z,   0.80,   7.13,  99.90,   7.69,  -0.24,
04/22 11Z,   0.80,   7.34,  99.90,   7.90,  -0.24,
04/22 12Z,   0.80,   7.58,  99.90,   8.14,  -0.24,
04/22 13Z,   0.80,   7.79,  99.90,   8.35,  -0.24,
04/22 14Z,   0.80,   7.90,  99.90,   8.46,  -0.24,  (max)
04/22 15Z,   0.80,   7.69,  99.90,   8.25,  -0.24,
04/22 16Z,   0.80,   6.89,  99.90,   7.44,  -0.24,
04/22 17Z,   0.80,   5.40,  99.90,   5.96,  -0.24,
04/22 18Z,   0.70,   3.42,  99.90,   3.87,  -0.24,
04/22 19Z,   0.70,   1.31,  99.90,   1.76,  -0.24,
04/22 20Z,   0.70,  -0.50,  99.90,  -0.04,  -0.24,
04/22 21Z,   0.70,  -1.57,  99.90,  -1.11,  -0.24,
04/22 22Z,   0.60,  -1.68,  99.90,  -1.33,  -0.24,  (min)
04/22 23Z,   0.60,  -0.96,  99.90,  -0.60,  -0.24,
04/23 00Z,   0.60,   0.29,  99.90,   0.65,  -0.24,
04/23 01Z,   0.60,   1.84,  99.90,   2.20,  -0.24,
04/23 02Z,   0.60,   3.60,  99.90,   3.96,  -0.24,
04/23 03Z,   0.60,   5.42,  99.90,   5.78,  -0.24,
04/23 04Z,   0.60,   7.01,  99.90,   7.37,  -0.24,
04/23 05Z,   0.60,   8.10,  99.90,   8.46,  -0.24,
04/23 06Z,   0.60,   8.61,  99.90,   8.97,  -0.24,  (max)
04/23 07Z,   0.50,   8.57,  99.90,   8.83,  -0.24,
04/23 08Z,   0.50,   8.13,  99.90,   8.39,  -0.24,
04/23 09Z,   0.50,   7.54,  99.90,   7.80,  -0.24,
04/23 10Z,   0.50,   7.10,  99.90,   7.35,  -0.24,
04/23 11Z,   0.50,   6.93,  99.90,   7.19,  -0.24,  (min)
04/23 12Z,   0.50,   6.96,  99.90,   7.21,  -0.24,
04/23 13Z,   0.50,   7.05,  99.90,   7.31,  -0.24,
04/23 14Z,   0.40,   7.17,  99.90,   7.33,  -0.24,
04/23 15Z,   0.40,   7.25,  99.90,   7.41,  -0.24,  (max)
04/23 16Z,   0.40,   7.07,  99.90,   7.23,  -0.24,
04/23 17Z,   0.40,   6.38,  99.90,   6.54,  -0.24,
04/23 18Z,   0.30,   5.13,  99.90,   5.18,  -0.24,
04/23 19Z,   0.30,   3.47,  99.90,   3.53,  -0.24,
04/23 20Z,   0.40,   1.70,  99.90,   1.85,  -0.24,
04/23 21Z,   0.30,   0.15,  99.90,   0.21,  -0.24,
04/23 22Z,   0.30,  -0.79,  99.90,  -0.73,  -0.24,
04/23 23Z,   0.30,  -0.93,  99.90,  -0.87,  -0.24,  (min)
04/24 00Z,   0.30,  -0.35,  99.90,  -0.29,  -0.24,