EXTRA-TROPICAL  STORM  SURGE
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hat-on
mhhw-on
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Gulf of Alaska
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Surge List
Gulf of Alaska
#Nikiski, AK : 05/18/2026 18:21:15 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/17 00Z,  -0.30,  18.34,  17.65,  99.90,  -0.39,
05/17 01Z,  -0.40,  20.87,  20.39,  99.90,  -0.08,
05/17 02Z,  -0.40,  20.66,  20.57,  99.90,   0.31,  (max)
05/17 03Z,  -0.30,  17.99,  17.92,  99.90,   0.23,
05/17 04Z,  -0.30,  13.84,  13.39,  99.90,  -0.15,
05/17 05Z,  -0.30,   9.46,   9.03,  99.90,  -0.13,
05/17 06Z,  -0.30,   5.70,   5.37,  99.90,  -0.03,
05/17 07Z,  -0.30,   3.30,   2.76,  99.90,  -0.24,  (min)
05/17 08Z,  -0.40,   3.55,   3.16,  99.90,   0.01,
05/17 09Z,  -0.40,   7.26,   8.26,  99.90,   1.40,
05/17 10Z,  -0.40,  13.07,  13.95,  99.90,   1.28,
05/17 11Z,  -0.40,  18.60,  18.61,  99.90,   0.41,
05/17 12Z,  -0.40,  22.35,  22.21,  99.90,   0.26,
05/17 13Z,  -0.50,  23.72,  23.72,  99.90,   0.50,  (max)
05/17 14Z,  -0.50,  22.37,  22.31,  99.90,   0.44,
05/17 15Z,  -0.60,  18.49,  18.03,  99.90,   0.14,
05/17 16Z,  -0.60,  12.93,  12.57,  99.90,   0.24,
05/17 17Z,  -0.60,   6.86,   7.68,  99.90,   1.42,
05/17 18Z,  -0.50,   1.28,   2.66,  99.90,   1.88,
05/17 19Z,  -0.50,  -3.12,  -1.66,  99.90,   1.96,
05/17 20Z,  -0.50,  -5.14,  -4.28,  99.90,   1.36,  (min)
05/17 21Z,  -0.50,  -3.35,  -3.18,  99.90,   0.67,
05/17 22Z,  -0.50,   2.02,   3.19,  99.90,   1.67,
05/17 23Z,  -0.40,   8.79,   9.64,  99.90,   1.25,
05/18 00Z,  -0.50,  14.89,  14.91,  99.90,   0.52,
05/18 01Z,  -0.40,  19.28,  19.07,  99.90,   0.19,
05/18 02Z,  -0.30,  21.26,  21.20,  99.90,   0.24,  (max)
05/18 03Z,  -0.30,  20.52,  20.50,  99.90,   0.28,
05/18 04Z,  -0.20,  17.46,  17.07,  99.90,  -0.19,
05/18 05Z,  -0.20,  13.14,  12.32,  99.90,  -0.62,
05/18 06Z,  -0.30,   8.76,   8.23,  99.90,  -0.23,
05/18 07Z,  -0.30,   5.16,   4.70,  99.90,  -0.16,
05/18 08Z,  -0.20,   3.23,   2.62,  99.90,  -0.41,  (min)
05/18 09Z,  -0.20,   4.29,   4.13,  99.90,   0.04,
05/18 10Z,  -0.20,   8.73,   9.64,  99.90,   1.11,
05/18 11Z,  -0.20,  14.75,  14.90,  99.90,   0.35,
05/18 12Z,  -0.20,  19.91,  19.35,  99.90,  -0.36,
05/18 13Z,  -0.20,  23.00,  22.61,  99.90,  -0.19,
05/18 14Z,  -0.20,  23.61,  23.51,  99.90,   0.10,  (max)
05/18 15Z,  -0.20,  21.60,  21.44,  99.90,   0.04,
05/18 16Z,  -0.20,  17.27,  16.80,  99.90,  -0.27,
05/18 17Z,  -0.30,  11.51,  11.39,  99.90,   0.18,
05/18 18Z,  -0.30,   5.45,   6.43,  99.90,   1.28,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/18 19Z,  -0.30,   0.04,  99.90,   0.92,   1.18,
05/18 20Z,  -0.40,  -3.95,  99.90,  -3.27,   1.08,
05/18 21Z,  -0.40,  -5.22,  99.90,  -4.64,   0.98,  (min)
05/18 22Z,  -0.40,  -2.54,  99.90,  -2.05,   0.89,
05/18 23Z,  -0.40,   3.35,  99.90,   3.73,   0.79,
05/19 00Z,  -0.40,  10.06,  99.90,  10.34,   0.69,
05/19 01Z,  -0.40,  15.75,  99.90,  15.94,   0.59,
05/19 02Z,  -0.40,  19.63,  99.90,  19.72,   0.49,
05/19 03Z,  -0.30,  21.13,  99.90,  21.21,   0.39,  (max)
05/19 04Z,  -0.20,  20.02,  99.90,  20.11,   0.29,
05/19 05Z,  -0.20,  16.78,  99.90,  16.77,   0.19,
05/19 06Z,  -0.30,  12.46,  99.90,  12.25,   0.09,
05/19 07Z,  -0.30,   8.22,  99.90,   8.01,   0.09,
05/19 08Z,  -0.30,   4.91,  99.90,   4.70,   0.09,
05/19 09Z,  -0.20,   3.49,  99.90,   3.38,   0.09,  (min)
05/19 10Z,  -0.20,   5.21,  99.90,   5.10,   0.09,
05/19 11Z,  -0.20,  10.01,  99.90,   9.90,   0.09,
05/19 12Z,  -0.20,  15.77,  99.90,  15.66,   0.09,
05/19 13Z,  -0.20,  20.29,  99.90,  20.18,   0.09,
05/19 14Z,  -0.20,  22.70,  99.90,  22.59,   0.09,
05/19 15Z,  -0.10,  22.79,  99.90,  22.78,   0.09,  (max)
05/19 16Z,  -0.10,  20.46,  99.90,  20.45,   0.09,
05/19 17Z,  -0.10,  16.05,  99.90,  16.04,   0.09,
05/19 18Z,  -0.10,  10.39,  99.90,  10.39,   0.09,
05/19 19Z,  -0.20,   4.60,  99.90,   4.49,   0.09,
05/19 20Z,  -0.20,  -0.42,  99.90,  -0.53,   0.09,
05/19 21Z,  -0.30,  -3.87,  99.90,  -4.08,   0.09,
05/19 22Z,  -0.30,  -4.42,  99.90,  -4.63,   0.09,  (min)
05/19 23Z,  -0.30,  -1.17,  99.90,  -1.38,   0.09,
05/20 00Z,  -0.40,   4.75,  99.90,   4.44,   0.09,
05/20 01Z,  -0.40,  10.98,  99.90,  10.67,   0.09,
05/20 02Z,  -0.40,  16.08,  99.90,  15.77,   0.09,
05/20 03Z,  -0.40,  19.46,  99.90,  19.15,   0.09,
05/20 04Z,  -0.40,  20.62,  99.90,  20.31,   0.09,  (max)
05/20 05Z,  -0.40,  19.35,  99.90,  19.04,   0.09,
05/20 06Z,  -0.40,  16.10,  99.90,  15.79,   0.09,
05/20 07Z,  -0.50,  11.93,  99.90,  11.52,   0.09,
05/20 08Z,  -0.50,   7.97,  99.90,   7.56,   0.09,
05/20 09Z,  -0.40,   5.01,  99.90,   4.70,   0.09,
05/20 10Z,  -0.40,   4.03,  99.90,   3.72,   0.09,  (min)
05/20 11Z,  -0.40,   6.11,  99.90,   5.80,   0.09,
05/20 12Z,  -0.40,  10.82,  99.90,  10.51,   0.09,
05/20 13Z,  -0.40,  15.96,  99.90,  15.65,   0.09,
05/20 14Z,  -0.40,  19.72,  99.90,  19.41,   0.09,
05/20 15Z,  -0.50,  21.61,  99.90,  21.20,   0.09,  (max)
05/20 16Z,  -0.50,  21.48,  99.90,  21.07,   0.09,
05/20 17Z,  -0.60,  19.19,  99.90,  18.68,   0.09,
05/20 18Z,  -0.60,  14.99,  99.90,  14.48,   0.09,
05/20 19Z,  -0.70,   9.71,  99.90,   9.10,   0.09,
05/20 20Z,  -0.70,   4.41,  99.90,   3.80,   0.09,
05/20 21Z,  -0.70,  -0.07,  99.90,  -0.68,   0.09,
05/20 22Z,  -0.70,  -2.95,  99.90,  -3.56,   0.09,
05/20 23Z,  -0.70,  -2.99,  99.90,  -3.60,   0.09,  (min)
05/21 00Z,  -0.60,   0.44,  99.90,  -0.07,   0.09,
05/21 01Z,  -0.50,   5.94,  99.90,   5.53,   0.09,
05/21 02Z,  -0.50,  11.46,  99.90,  11.05,   0.09,
05/21 03Z,  -0.40,  15.94,  99.90,  15.63,   0.09,
05/21 04Z,  -0.30,  18.96,  99.90,  18.75,   0.09,
05/21 05Z,  -0.30,  19.95,  99.90,  19.74,   0.09,  (max)
05/21 06Z,  -0.20,  18.67,  99.90,  18.56,   0.09,
05/21 07Z,  -0.20,  15.56,  99.90,  15.45,   0.09,
05/21 08Z,  -0.10,  11.68,  99.90,  11.67,   0.09,
05/21 09Z,  -0.10,   8.07,  99.90,   8.06,   0.09,
05/21 10Z,  -0.10,   5.43,  99.90,   5.42,   0.09,
05/21 11Z,   0.00,   4.68,  99.90,   4.77,   0.09,  (min)
05/21 12Z,   0.00,   6.74,  99.90,   6.83,   0.09,
05/21 13Z,   0.00,  10.94,  99.90,  11.03,   0.09,
05/21 14Z,   0.00,  15.25,  99.90,  15.35,   0.09,
05/21 15Z,   0.00,  18.35,  99.90,  18.44,   0.09,
05/21 16Z,   0.00,  19.98,  99.90,  20.07,   0.09,  (max)
05/21 17Z,   0.00,  19.94,  99.90,  20.03,   0.09,
05/21 18Z,  -0.10,  17.95,  99.90,  17.94,   0.09,
05/21 19Z,  -0.10,  14.20,  99.90,  14.19,   0.09,
05/21 20Z,  -0.10,   9.50,  99.90,   9.49,   0.09,
05/21 21Z,  -0.10,   4.87,  99.90,   4.86,   0.09,
05/21 22Z,  -0.10,   0.98,  99.90,   0.97,   0.09,
05/21 23Z,  -0.10,  -1.46,  99.90,  -1.47,   0.09,  (min)
05/22 00Z,  -0.20,  -1.26,  99.90,  -1.37,   0.09,
05/22 01Z,  -0.20,   1.96,  99.90,   1.85,   0.09,
05/22 02Z,  -0.30,   6.79,  99.90,   6.58,   0.09,
05/22 03Z,  -0.30,  11.54,  99.90,  11.33,   0.09,
05/22 04Z,  -0.30,  15.54,  99.90,  15.33,   0.09,
05/22 05Z,  -0.40,  18.36,  99.90,  18.05,   0.09,
05/22 06Z,  -0.40,  19.33,  99.90,  19.02,   0.09,  (max)
05/22 07Z,  -0.40,  18.14,  99.90,  17.83,   0.09,
05/22 08Z,  -0.40,  15.28,  99.90,  14.97,   0.09,
05/22 09Z,  -0.40,  11.77,  99.90,  11.46,   0.09,
05/22 10Z,  -0.40,   8.50,  99.90,   8.19,   0.09,
05/22 11Z,  -0.40,   6.01,  99.90,   5.70,   0.09,
05/22 12Z,  -0.40,   5.19,  99.90,   4.88,   0.09,