EXTRA-TROPICAL  STORM  SURGE
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hat-on
mhhw-on
msl-on
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Gulf of Alaska
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Surge List
Gulf of Alaska
#Seward, AK : 05/18/2026 06:21:50 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/16 12Z,   0.50,   6.03,   5.32,  99.90,  -1.21,
05/16 13Z,   0.40,   2.60,   2.00,  99.90,  -1.00,
05/16 14Z,   0.30,  -0.40,  -0.94,  99.90,  -0.84,
05/16 15Z,   0.30,  -2.26,  -2.90,  99.90,  -0.94,
05/16 16Z,   0.40,  -2.58,  -3.13,  99.90,  -0.95,  (min)
05/16 17Z,   0.40,  -1.39,  -1.90,  99.90,  -0.91,
05/16 18Z,   0.40,   0.96,   0.28,  99.90,  -1.08,
05/16 19Z,   0.40,   3.88,   3.13,  99.90,  -1.15,
05/16 20Z,   0.40,   6.64,   5.98,  99.90,  -1.06,
05/16 21Z,   0.40,   8.60,   7.82,  99.90,  -1.18,
05/16 22Z,   0.50,   9.36,   8.51,  99.90,  -1.35,  (max)
05/16 23Z,   0.50,   8.90,   8.21,  99.90,  -1.19,
05/17 00Z,   0.50,   7.45,   6.99,  99.90,  -0.96,
05/17 01Z,   0.50,   5.44,   4.83,  99.90,  -1.11,
05/17 02Z,   0.40,   3.47,   2.78,  99.90,  -1.09,
05/17 03Z,   0.40,   2.24,   1.72,  99.90,  -0.92,  (min)
05/17 04Z,   0.30,   2.22,   1.80,  99.90,  -0.72,
05/17 05Z,   0.40,   3.49,   3.22,  99.90,  -0.67,
05/17 06Z,   0.60,   5.74,   5.63,  99.90,  -0.71,
05/17 07Z,   0.60,   8.46,   8.36,  99.90,  -0.70,
05/17 08Z,   0.70,  10.93,  10.88,  99.90,  -0.75,
05/17 09Z,   0.70,  12.46,  12.46,  99.90,  -0.70,
05/17 10Z,   0.80,  12.60,  12.55,  99.90,  -0.85,  (max)
05/17 11Z,   0.80,  11.23,  11.28,  99.90,  -0.75,
05/17 12Z,   1.00,   8.58,   8.58,  99.90,  -1.00,
05/17 13Z,   1.10,   5.13,   5.31,  99.90,  -0.92,
05/17 14Z,   1.10,   1.53,   1.77,  99.90,  -0.86,
05/17 15Z,   1.30,  -1.41,  -1.17,  99.90,  -1.06,
05/17 16Z,   1.00,  -3.01,  -2.78,  99.90,  -0.77,
05/17 17Z,   0.90,  -2.96,  -2.82,  99.90,  -0.76,  (min)
05/17 18Z,   1.20,  -1.39,  -1.25,  99.90,  -1.06,
05/17 19Z,   1.20,   1.26,   1.31,  99.90,  -1.15,
05/17 20Z,   1.20,   4.33,   4.24,  99.90,  -1.29,
05/17 21Z,   0.80,   7.07,   6.87,  99.90,  -1.00,
05/17 22Z,   0.90,   8.87,   8.59,  99.90,  -1.18,
05/17 23Z,   1.00,   9.42,   9.01,  99.90,  -1.41,  (max)
05/18 00Z,   1.10,   8.76,   8.39,  99.90,  -1.47,
05/18 01Z,   0.90,   7.17,   6.87,  99.90,  -1.20,
05/18 02Z,   0.80,   5.12,   4.79,  99.90,  -1.13,
05/18 03Z,   0.80,   3.28,   3.04,  99.90,  -1.04,
05/18 04Z,   0.70,   2.31,   2.16,  99.90,  -0.85,  (min)
05/18 05Z,   0.70,   2.60,   2.54,  99.90,  -0.76,
05/18 06Z,   0.70,   4.15,   4.06,  99.90,  -0.79,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/18 07Z,   0.70,   6.58,  99.90,   6.45,  -0.82,
05/18 08Z,   0.80,   9.28,  99.90,   9.23,  -0.85,
05/18 09Z,   0.80,  11.56,  99.90,  11.47,  -0.89,
05/18 10Z,   0.90,  12.76,  99.90,  12.74,  -0.92,  (max)
05/18 11Z,   0.90,  12.50,  99.90,  12.45,  -0.95,
05/18 12Z,   0.80,  10.77,  99.90,  10.59,  -0.98,
05/18 13Z,   0.80,   7.87,  99.90,   7.66,  -1.01,
05/18 14Z,   0.70,   4.29,  99.90,   3.95,  -1.04,
05/18 15Z,   0.70,   0.74,  99.90,   0.37,  -1.07,
05/18 16Z,   0.60,  -1.97,  99.90,  -2.48,  -1.10,
05/18 17Z,   0.60,  -3.24,  99.90,  -3.78,  -1.14,  (min)
05/18 18Z,   0.50,  -2.85,  99.90,  -3.52,  -1.17,
05/18 19Z,   0.50,  -1.02,  99.90,  -1.68,  -1.17,
05/18 20Z,   0.60,   1.75,  99.90,   1.18,  -1.17,
05/18 21Z,   0.70,   4.78,  99.90,   4.31,  -1.17,
05/18 22Z,   0.80,   7.35,  99.90,   6.98,  -1.17,
05/18 23Z,   0.80,   8.91,  99.90,   8.54,  -1.17,
05/19 00Z,   0.80,   9.24,  99.90,   8.87,  -1.17,  (max)
05/19 01Z,   0.80,   8.44,  99.90,   8.07,  -1.17,
05/19 02Z,   0.90,   6.80,  99.90,   6.54,  -1.17,
05/19 03Z,   0.80,   4.84,  99.90,   4.47,  -1.17,
05/19 04Z,   0.80,   3.19,  99.90,   2.83,  -1.17,
05/19 05Z,   0.80,   2.49,  99.90,   2.13,  -1.17,  (min)
05/19 06Z,   0.80,   3.04,  99.90,   2.68,  -1.17,
05/19 07Z,   0.70,   4.74,  99.90,   4.27,  -1.17,
05/19 08Z,   0.70,   7.16,  99.90,   6.69,  -1.17,
05/19 09Z,   0.80,   9.70,  99.90,   9.33,  -1.17,
05/19 10Z,   0.80,  11.69,  99.90,  11.32,  -1.17,
05/19 11Z,   0.80,  12.55,  99.90,  12.18,  -1.17,  (max)
05/19 12Z,   0.80,  11.99,  99.90,  11.62,  -1.17,
05/19 13Z,   0.80,  10.07,  99.90,   9.71,  -1.17,
05/19 14Z,   0.80,   7.12,  99.90,   6.75,  -1.17,
05/19 15Z,   0.80,   3.64,  99.90,   3.27,  -1.17,
05/19 16Z,   0.80,   0.32,  99.90,  -0.04,  -1.17,
05/19 17Z,   0.70,  -2.06,  99.90,  -2.53,  -1.17,
05/19 18Z,   0.70,  -2.99,  99.90,  -3.46,  -1.17,  (min)
05/19 19Z,   0.70,  -2.34,  99.90,  -2.81,  -1.17,
05/19 20Z,   0.60,  -0.41,  99.90,  -0.98,  -1.17,
05/19 21Z,   0.60,   2.30,  99.90,   1.73,  -1.17,
05/19 22Z,   0.60,   5.13,  99.90,   4.57,  -1.17,
05/19 23Z,   0.70,   7.44,  99.90,   6.97,  -1.17,
05/20 00Z,   0.60,   8.75,  99.90,   8.19,  -1.17,
05/20 01Z,   0.60,   8.92,  99.90,   8.36,  -1.17,  (max)
05/20 02Z,   0.50,   8.07,  99.90,   7.40,  -1.17,
05/20 03Z,   0.50,   6.49,  99.90,   5.82,  -1.17,
05/20 04Z,   0.50,   4.68,  99.90,   4.01,  -1.17,
05/20 05Z,   0.50,   3.26,  99.90,   2.59,  -1.17,
05/20 06Z,   0.50,   2.78,  99.90,   2.11,  -1.17,  (min)
05/20 07Z,   0.60,   3.46,  99.90,   2.89,  -1.17,
05/20 08Z,   0.60,   5.13,  99.90,   4.57,  -1.17,
05/20 09Z,   0.50,   7.38,  99.90,   6.71,  -1.17,
05/20 10Z,   0.80,   9.64,  99.90,   9.27,  -1.17,
05/20 11Z,   0.50,  11.30,  99.90,  10.64,  -1.17,
05/20 12Z,   0.60,  11.89,  99.90,  11.32,  -1.17,  (max)
05/20 13Z,   0.90,  11.17,  99.90,  10.91,  -1.17,
05/20 14Z,   0.70,   9.26,  99.90,   8.79,  -1.17,
05/20 15Z,   0.50,   6.45,  99.90,   5.78,  -1.17,
05/20 16Z,   0.60,   3.24,  99.90,   2.67,  -1.17,
05/20 17Z,   0.80,   0.29,  99.90,  -0.08,  -1.17,
05/20 18Z,   0.80,  -1.73,  99.90,  -2.10,  -1.17,
05/20 19Z,   0.70,  -2.37,  99.90,  -2.83,  -1.17,  (min)
05/20 20Z,   0.90,  -1.59,  99.90,  -1.86,  -1.17,
05/20 21Z,   1.10,   0.30,  99.90,   0.23,  -1.17,
05/20 22Z,   1.10,   2.81,  99.90,   2.75,  -1.17,
05/20 23Z,   1.10,   5.37,  99.90,   5.31,  -1.17,
05/21 00Z,   1.20,   7.40,  99.90,   7.44,  -1.17,
05/21 01Z,   1.20,   8.52,  99.90,   8.55,  -1.17,
05/21 02Z,   1.20,   8.61,  99.90,   8.64,  -1.17,  (max)
05/21 03Z,   1.20,   7.79,  99.90,   7.82,  -1.17,
05/21 04Z,   1.30,   6.33,  99.90,   6.47,  -1.17,
05/21 05Z,   1.30,   4.70,  99.90,   4.83,  -1.17,
05/21 06Z,   1.20,   3.46,  99.90,   3.49,  -1.17,
05/21 07Z,   1.20,   3.09,  99.90,   3.12,  -1.17,  (min)
05/21 08Z,   1.20,   3.74,  99.90,   3.77,  -1.17,
05/21 09Z,   1.00,   5.23,  99.90,   5.07,  -1.17,
05/21 10Z,   1.30,   7.19,  99.90,   7.32,  -1.17,
05/21 11Z,   1.10,   9.11,  99.90,   9.04,  -1.17,
05/21 12Z,   0.70,  10.48,  99.90,  10.02,  -1.17,
05/21 13Z,   0.90,  10.90,  99.90,  10.63,  -1.17,  (max)
05/21 14Z,   0.90,  10.19,  99.90,   9.92,  -1.17,
05/21 15Z,   0.80,   8.44,  99.90,   8.08,  -1.17,
05/21 16Z,   0.60,   5.94,  99.90,   5.37,  -1.17,
05/21 17Z,   0.70,   3.12,  99.90,   2.65,  -1.17,
05/21 18Z,   0.80,   0.57,  99.90,   0.20,  -1.17,
05/21 19Z,   0.80,  -1.09,  99.90,  -1.46,  -1.17,
05/21 20Z,   0.70,  -1.53,  99.90,  -1.99,  -1.17,  (min)
05/21 21Z,   0.80,  -0.74,  99.90,  -1.10,  -1.17,
05/21 22Z,   0.90,   1.00,  99.90,   0.73,  -1.17,
05/21 23Z,   0.80,   3.26,  99.90,   2.89,  -1.17,
05/22 00Z,   0.70,   5.54,  99.90,   5.07,  -1.17,