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
#Nikiski, AK : 04/18/2026 16:21:24 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/17 00Z,  -0.40,  20.12,  19.40,  99.90,  -0.32,
04/17 01Z,  -0.40,  21.40,  20.83,  99.90,  -0.17,  (max)
04/17 02Z,  -0.40,  19.91,  19.40,  99.90,  -0.11,
04/17 03Z,  -0.50,  16.17,  15.43,  99.90,  -0.24,
04/17 04Z,  -0.50,  11.34,  10.61,  99.90,  -0.23,
04/17 05Z,  -0.40,   6.62,   6.28,  99.90,   0.06,
04/17 06Z,  -0.40,   2.75,   2.28,  99.90,  -0.07,
04/17 07Z,  -0.40,   0.72,  -0.30,  99.90,  -0.62,  (min)
04/17 08Z,  -0.40,   1.96,   0.73,  99.90,  -0.83,
04/17 09Z,  -0.30,   6.59,   6.58,  99.90,   0.29,
04/17 10Z,  -0.30,  12.71,  12.50,  99.90,   0.09,
04/17 11Z,  -0.30,  18.18,  17.52,  99.90,  -0.36,
04/17 12Z,  -0.20,  21.89,  21.40,  99.90,  -0.29,
04/17 13Z,  -0.20,  23.16,  22.87,  99.90,  -0.09,  (max)
04/17 14Z,  -0.20,  21.57,  21.32,  99.90,  -0.05,
04/17 15Z,  -0.20,  17.46,  16.96,  99.90,  -0.30,
04/17 16Z,  -0.20,  11.87,  11.53,  99.90,  -0.14,
04/17 17Z,  -0.20,   6.06,   6.66,  99.90,   0.80,
04/17 18Z,  -0.20,   0.96,   1.78,  99.90,   1.02,
04/17 19Z,  -0.20,  -2.58,  -2.16,  99.90,   0.62,
04/17 20Z,  -0.20,  -3.15,  -3.79,  99.90,  -0.44,  (min)
04/17 21Z,  -0.20,   0.23,  -0.26,  99.90,  -0.29,
04/17 22Z,  -0.20,   6.37,   6.58,  99.90,   0.41,
04/17 23Z,  -0.20,  12.90,  12.76,  99.90,   0.06,
04/18 00Z,  -0.20,  18.17,  17.64,  99.90,  -0.33,
04/18 01Z,  -0.20,  21.34,  20.89,  99.90,  -0.25,
04/18 02Z,  -0.20,  21.78,  21.47,  99.90,  -0.11,  (max)
04/18 03Z,  -0.20,  19.44,  19.02,  99.90,  -0.22,
04/18 04Z,  -0.20,  15.08,  14.39,  99.90,  -0.49,
04/18 05Z,  -0.20,   9.99,   9.46,  99.90,  -0.33,
04/18 06Z,  -0.20,   5.36,   5.18,  99.90,   0.02,
04/18 07Z,  -0.20,   2.00,   1.49,  99.90,  -0.31,
04/18 08Z,  -0.20,   1.02,  -0.07,  99.90,  -0.89,  (min)
04/18 09Z,  -0.20,   3.64,   3.30,  99.90,  -0.14,
04/18 10Z,  -0.10,   9.36,   9.75,  99.90,   0.49,
04/18 11Z,  -0.10,  15.80,  15.37,  99.90,  -0.33,
04/18 12Z,  -0.10,  20.83,  20.02,  99.90,  -0.71,
04/18 13Z,  -0.10,  23.54,  22.98,  99.90,  -0.46,
04/18 14Z,  -0.20,  23.51,  23.08,  99.90,  -0.23,  (max)
04/18 15Z,  -0.20,  20.67,  19.98,  99.90,  -0.49,
04/18 16Z,  -0.20,  15.60,  14.65,  99.90,  -0.75,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/18 17Z,  -0.30,   9.46,  99.90,   8.44,  -0.72,
04/18 18Z,  -0.30,   3.51,  99.90,   2.52,  -0.69,
04/18 19Z,  -0.30,  -1.33,  99.90,  -2.28,  -0.65,
04/18 20Z,  -0.30,  -4.13,  99.90,  -5.05,  -0.62,  (min)
04/18 21Z,  -0.30,  -3.48,  99.90,  -4.37,  -0.59,
04/18 22Z,  -0.30,   1.13,  99.90,   0.27,  -0.56,
04/18 23Z,  -0.20,   7.95,  99.90,   7.22,  -0.53,
04/19 00Z,  -0.20,  14.48,  99.90,  13.79,  -0.50,
04/19 01Z,  -0.20,  19.30,  99.90,  18.63,  -0.46,
04/19 02Z,  -0.10,  21.75,  99.90,  21.22,  -0.43,  (max)
04/19 03Z,  -0.10,  21.43,  99.90,  20.93,  -0.40,
04/19 04Z,  -0.10,  18.50,  99.90,  18.03,  -0.37,
04/19 05Z,  -0.10,  13.86,  99.90,  13.39,  -0.37,
04/19 06Z,  -0.10,   8.84,  99.90,   8.37,  -0.37,
04/19 07Z,  -0.10,   4.61,  99.90,   4.14,  -0.37,
04/19 08Z,  -0.10,   1.99,  99.90,   1.52,  -0.37,  (min)
04/19 09Z,   0.00,   2.12,  99.90,   1.75,  -0.37,
04/19 10Z,   0.00,   5.86,  99.90,   5.49,  -0.37,
04/19 11Z,   0.10,  12.13,  99.90,  11.86,  -0.37,
04/19 12Z,   0.10,  18.27,  99.90,  18.00,  -0.37,
04/19 13Z,   0.10,  22.43,  99.90,  22.16,  -0.37,
04/19 14Z,   0.10,  24.02,  99.90,  23.75,  -0.37,  (max)
04/19 15Z,   0.10,  22.89,  99.90,  22.62,  -0.37,
04/19 16Z,   0.10,  19.19,  99.90,  18.92,  -0.37,
04/19 17Z,   0.00,  13.62,  99.90,  13.25,  -0.37,
04/19 18Z,   0.00,   7.37,  99.90,   7.00,  -0.37,
04/19 19Z,   0.00,   1.67,  99.90,   1.30,  -0.37,
04/19 20Z,   0.00,  -2.62,  99.90,  -2.99,  -0.37,
04/19 21Z,   0.00,  -4.53,  99.90,  -4.90,  -0.37,  (min)
04/19 22Z,   0.10,  -2.80,  99.90,  -3.07,  -0.37,
04/19 23Z,   0.10,   2.56,  99.90,   2.29,  -0.37,
04/20 00Z,   0.20,   9.43,  99.90,   9.26,  -0.37,
04/20 01Z,   0.30,  15.46,  99.90,  15.39,  -0.37,
04/20 02Z,   0.30,  19.58,  99.90,  19.51,  -0.37,
04/20 03Z,   0.20,  21.36,  99.90,  21.19,  -0.37,  (max)
04/20 04Z,   0.20,  20.52,  99.90,  20.35,  -0.37,
04/20 05Z,   0.20,  17.34,  99.90,  17.17,  -0.37,
04/20 06Z,   0.30,  12.77,  99.90,  12.70,  -0.37,
04/20 07Z,   0.40,   8.12,  99.90,   8.15,  -0.37,
04/20 08Z,   0.40,   4.50,  99.90,   4.53,  -0.37,
04/20 09Z,   0.50,   2.70,  99.90,   2.83,  -0.37,  (min)
04/20 10Z,   0.60,   3.75,  99.90,   3.99,  -0.37,
04/20 11Z,   0.60,   8.15,  99.90,   8.38,  -0.37,
04/20 12Z,   0.70,  14.31,  99.90,  14.64,  -0.37,
04/20 13Z,   0.80,  19.66,  99.90,  20.09,  -0.37,
04/20 14Z,   0.80,  22.77,  99.90,  23.20,  -0.37,
04/20 15Z,   0.80,  23.41,  99.90,  23.84,  -0.37,  (max)
04/20 16Z,   0.80,  21.58,  99.90,  22.01,  -0.37,
04/20 17Z,   0.80,  17.50,  99.90,  17.93,  -0.37,
04/20 18Z,   0.80,  11.90,  99.90,  12.33,  -0.37,
04/20 19Z,   0.80,   5.97,  99.90,   6.40,  -0.37,
04/20 20Z,   0.80,   0.83,  99.90,   1.26,  -0.37,
04/20 21Z,   0.80,  -2.74,  99.90,  -2.31,  -0.37,
04/20 22Z,   0.80,  -3.85,  99.90,  -3.42,  -0.37,  (min)
04/20 23Z,   0.90,  -1.44,  99.90,  -0.91,  -0.37,
04/21 00Z,   1.00,   4.06,  99.90,   4.69,  -0.37,
04/21 01Z,   1.00,  10.41,  99.90,  11.04,  -0.37,
04/21 02Z,   1.00,  15.64,  99.90,  16.27,  -0.37,
04/21 03Z,   1.00,  19.06,  99.90,  19.69,  -0.37,
04/21 04Z,   1.00,  20.38,  99.90,  21.01,  -0.37,  (max)
04/21 05Z,   1.00,  19.35,  99.90,  19.98,  -0.37,
04/21 06Z,   1.00,  16.25,  99.90,  16.88,  -0.37,
04/21 07Z,   0.90,  12.03,  99.90,  12.56,  -0.37,
04/21 08Z,   0.80,   7.99,  99.90,   8.42,  -0.37,
04/21 09Z,   0.80,   5.08,  99.90,   5.51,  -0.37,
04/21 10Z,   0.80,   3.96,  99.90,   4.39,  -0.37,  (min)
04/21 11Z,   0.70,   5.55,  99.90,   5.88,  -0.37,
04/21 12Z,   0.70,   9.98,  99.90,  10.31,  -0.37,
04/21 13Z,   0.60,  15.48,  99.90,  15.71,  -0.37,
04/21 14Z,   0.60,  19.76,  99.90,  19.99,  -0.37,
04/21 15Z,   0.50,  21.93,  99.90,  22.06,  -0.37,  (max)
04/21 16Z,   0.40,  21.98,  99.90,  22.01,  -0.37,
04/21 17Z,   0.30,  19.93,  99.90,  19.86,  -0.37,
04/21 18Z,   0.20,  15.96,  99.90,  15.79,  -0.37,
04/21 19Z,   0.10,  10.77,  99.90,  10.50,  -0.37,
04/21 20Z,   0.00,   5.49,  99.90,   5.12,  -0.37,
04/21 21Z,   0.00,   1.09,  99.90,   0.73,  -0.37,
04/21 22Z,   0.00,  -1.81,  99.90,  -2.18,  -0.37,
04/21 23Z,   0.00,  -2.41,  99.90,  -2.78,  -0.37,  (min)
04/22 00Z,   0.00,   0.17,  99.90,  -0.20,  -0.37,
04/22 01Z,   0.00,   5.23,  99.90,   4.86,  -0.37,
04/22 02Z,   0.00,  10.68,  99.90,  10.31,  -0.37,
04/22 03Z,   0.00,  15.05,  99.90,  14.68,  -0.37,
04/22 04Z,   0.00,  17.97,  99.90,  17.60,  -0.37,
04/22 05Z,   0.00,  19.13,  99.90,  18.76,  -0.37,  (max)
04/22 06Z,  -0.10,  18.21,  99.90,  17.74,  -0.37,
04/22 07Z,  99.90,  15.47,  99.90,  99.90,  -0.37,
04/22 08Z,  99.90,  11.84,  99.90,  99.90,  -0.37,
04/22 09Z,  99.90,   8.50,  99.90,  99.90,  -0.37,
04/22 10Z,  99.90,   6.18,  99.90,  99.90,  -0.37,
04/22 11Z,  99.90,   5.42,  99.90,  99.90,  -0.37,
04/22 12Z,  99.90,   7.03,  99.90,  99.90,  -0.37,