EXTRA-TROPICAL  STORM  SURGE
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hat-on
mhhw-on
msl-on
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Alaska
Gulf of Alaska
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Surge List
Gulf of Alaska
#Seward, AK : 04/20/2026 21:21:07 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/19 06Z,   0.90,   2.72,   2.15,  99.90,  -1.47,
04/19 07Z,   0.90,   5.06,   4.35,  99.90,  -1.61,
04/19 08Z,   1.00,   7.92,   7.44,  99.90,  -1.48,
04/19 09Z,   0.90,  10.57,  10.07,  99.90,  -1.40,
04/19 10Z,   1.00,  12.29,  11.70,  99.90,  -1.59,
04/19 11Z,   1.00,  12.59,  11.74,  99.90,  -1.85,  (max)
04/19 12Z,   1.00,  11.35,  10.71,  99.90,  -1.64,
04/19 13Z,   1.00,   8.81,   8.16,  99.90,  -1.65,
04/19 14Z,   1.00,   5.45,   4.73,  99.90,  -1.72,
04/19 15Z,   1.00,   1.93,   1.26,  99.90,  -1.67,
04/19 16Z,   1.00,  -0.96,  -1.56,  99.90,  -1.60,
04/19 17Z,   1.10,  -2.51,  -3.02,  99.90,  -1.61,  (min)
04/19 18Z,   1.00,  -2.40,  -2.91,  99.90,  -1.51,
04/19 19Z,   1.00,  -0.77,  -1.69,  99.90,  -1.92,
04/19 20Z,   1.10,   1.89,   1.18,  99.90,  -1.81,
04/19 21Z,   1.10,   4.90,   4.50,  99.90,  -1.50,
04/19 22Z,   1.20,   7.55,   7.00,  99.90,  -1.75,
04/19 23Z,   1.20,   9.21,   8.51,  99.90,  -1.90,
04/20 00Z,   1.10,   9.60,   8.87,  99.90,  -1.83,  (max)
04/20 01Z,   1.10,   8.76,   8.29,  99.90,  -1.57,
04/20 02Z,   1.10,   7.04,   6.59,  99.90,  -1.55,
04/20 03Z,   1.10,   4.91,   4.43,  99.90,  -1.58,
04/20 04Z,   1.10,   3.01,   2.57,  99.90,  -1.54,
04/20 05Z,   1.20,   2.00,   1.81,  99.90,  -1.39,  (min)
04/20 06Z,   1.10,   2.29,   2.13,  99.90,  -1.26,
04/20 07Z,   1.10,   3.84,   3.54,  99.90,  -1.40,
04/20 08Z,   1.20,   6.27,   5.92,  99.90,  -1.55,
04/20 09Z,   1.20,   8.95,   8.63,  99.90,  -1.52,
04/20 10Z,   1.30,  11.21,  10.79,  99.90,  -1.72,
04/20 11Z,   1.30,  12.43,  11.81,  99.90,  -1.92,  (max)
04/20 12Z,   1.10,  12.24,  11.56,  99.90,  -1.78,
04/20 13Z,   1.20,  10.63,   9.98,  99.90,  -1.85,
04/20 14Z,   1.10,   7.91,   7.29,  99.90,  -1.72,
04/20 15Z,   1.10,   4.58,   3.74,  99.90,  -1.94,
04/20 16Z,   1.10,   1.29,   0.65,  99.90,  -1.74,
04/20 17Z,   1.10,  -1.22,  -1.79,  99.90,  -1.67,
04/20 18Z,   1.10,  -2.37,  -2.91,  99.90,  -1.64,  (min)
04/20 19Z,   1.10,  -1.94,  -2.58,  99.90,  -1.74,
04/20 20Z,   1.10,  -0.18,  -0.90,  99.90,  -1.82,
04/20 21Z,   1.10,   2.39,   1.83,  99.90,  -1.66,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 22Z,   1.10,   5.14,  99.90,   4.59,  -1.65,
04/20 23Z,   1.10,   7.43,  99.90,   6.88,  -1.65,
04/21 00Z,   1.10,   8.76,  99.90,   8.22,  -1.64,
04/21 01Z,   1.10,   8.94,  99.90,   8.40,  -1.64,  (max)
04/21 02Z,   1.00,   8.08,  99.90,   7.45,  -1.63,
04/21 03Z,   1.00,   6.51,  99.90,   5.89,  -1.62,
04/21 04Z,   0.90,   4.69,  99.90,   3.97,  -1.62,
04/21 05Z,   0.90,   3.20,  99.90,   2.49,  -1.61,
04/21 06Z,   0.90,   2.60,  99.90,   1.89,  -1.61,  (min)
04/21 07Z,   0.90,   3.18,  99.90,   2.47,  -1.60,
04/21 08Z,   1.00,   4.81,  99.90,   4.21,  -1.60,
04/21 09Z,   1.00,   7.07,  99.90,   6.48,  -1.59,
04/21 10Z,   1.00,   9.40,  99.90,   8.81,  -1.59,
04/21 11Z,   1.00,  11.21,  99.90,  10.62,  -1.59,
04/21 12Z,   0.90,  11.99,  99.90,  11.30,  -1.59,  (max)
04/21 13Z,   0.90,  11.49,  99.90,  10.80,  -1.59,
04/21 14Z,   0.90,   9.78,  99.90,   9.08,  -1.59,
04/21 15Z,   0.90,   7.15,  99.90,   6.46,  -1.59,
04/21 16Z,   0.90,   4.09,  99.90,   3.39,  -1.59,
04/21 17Z,   0.90,   1.17,  99.90,   0.48,  -1.59,
04/21 18Z,   0.80,  -0.94,  99.90,  -1.73,  -1.59,
04/21 19Z,   0.80,  -1.77,  99.90,  -2.56,  -1.59,  (min)
04/21 20Z,   0.90,  -1.22,  99.90,  -1.91,  -1.59,
04/21 21Z,   0.90,   0.44,  99.90,  -0.26,  -1.59,
04/21 22Z,   0.80,   2.73,  99.90,   1.93,  -1.59,
04/21 23Z,   0.80,   5.11,  99.90,   4.31,  -1.59,
04/22 00Z,   0.70,   7.04,  99.90,   6.14,  -1.59,
04/22 01Z,   0.70,   8.13,  99.90,   7.23,  -1.59,
04/22 02Z,   0.70,   8.25,  99.90,   7.35,  -1.59,  (max)
04/22 03Z,   0.70,   7.53,  99.90,   6.63,  -1.59,
04/22 04Z,   0.70,   6.24,  99.90,   5.35,  -1.59,
04/22 05Z,   0.70,   4.78,  99.90,   3.89,  -1.59,
04/22 06Z,   0.80,   3.64,  99.90,   2.85,  -1.59,
04/22 07Z,   0.80,   3.30,  99.90,   2.51,  -1.59,  (min)
04/22 08Z,   0.80,   3.94,  99.90,   3.15,  -1.59,
04/22 09Z,   0.80,   5.41,  99.90,   4.61,  -1.59,
04/22 10Z,   0.80,   7.32,  99.90,   6.53,  -1.59,
04/22 11Z,   0.70,   9.22,  99.90,   8.33,  -1.59,
04/22 12Z,   0.70,  10.62,  99.90,   9.73,  -1.59,
04/22 13Z,   0.60,  11.13,  99.90,  10.14,  -1.59,  (max)
04/22 14Z,   0.50,  10.56,  99.90,   9.47,  -1.59,
04/22 15Z,   0.50,   8.98,  99.90,   7.89,  -1.59,
04/22 16Z,   0.50,   6.67,  99.90,   5.58,  -1.59,
04/22 17Z,   0.40,   4.01,  99.90,   2.82,  -1.59,
04/22 18Z,   0.50,   1.51,  99.90,   0.41,  -1.59,
04/22 19Z,   0.50,  -0.28,  99.90,  -1.37,  -1.59,
04/22 20Z,   0.50,  -0.95,  99.90,  -2.04,  -1.59,  (min)
04/22 21Z,   0.60,  -0.47,  99.90,  -1.46,  -1.59,
04/22 22Z,   0.60,   0.92,  99.90,  -0.07,  -1.59,
04/22 23Z,   0.60,   2.84,  99.90,   1.85,  -1.59,
04/23 00Z,   0.60,   4.85,  99.90,   3.86,  -1.59,
04/23 01Z,   0.50,   6.52,  99.90,   5.43,  -1.59,
04/23 02Z,   0.50,   7.52,  99.90,   6.43,  -1.59,
04/23 03Z,   0.50,   7.74,  99.90,   6.65,  -1.59,  (max)
04/23 04Z,   0.40,   7.27,  99.90,   6.07,  -1.59,
04/23 05Z,   0.40,   6.29,  99.90,   5.10,  -1.59,
04/23 06Z,   0.40,   5.13,  99.90,   3.94,  -1.59,
04/23 07Z,   0.40,   4.20,  99.90,   3.01,  -1.59,
04/23 08Z,   0.40,   3.91,  99.90,   2.71,  -1.59,  (min)
04/23 09Z,   0.40,   4.38,  99.90,   3.19,  -1.59,
04/23 10Z,   0.50,   5.51,  99.90,   4.42,  -1.59,
04/23 11Z,   0.50,   6.99,  99.90,   5.90,  -1.59,
04/23 12Z,   0.50,   8.49,  99.90,   7.40,  -1.59,
04/23 13Z,   0.40,   9.63,  99.90,   8.44,  -1.59,
04/23 14Z,   0.30,  10.07,  99.90,   8.78,  -1.59,  (max)
04/23 15Z,   0.40,   9.65,  99.90,   8.46,  -1.59,
04/23 16Z,   0.30,   8.40,  99.90,   7.11,  -1.59,
04/23 17Z,   0.40,   6.51,  99.90,   5.32,  -1.59,
04/23 18Z,   0.30,   4.28,  99.90,   2.99,  -1.59,
04/23 19Z,   0.40,   2.13,  99.90,   0.93,  -1.59,
04/23 20Z,   0.40,   0.54,  99.90,  -0.65,  -1.59,
04/23 21Z,   0.50,  -0.14,  99.90,  -1.23,  -1.59,  (min)
04/23 22Z,   0.40,   0.14,  99.90,  -1.06,  -1.59,
04/23 23Z,   0.40,   1.20,  99.90,   0.00,  -1.59,
04/24 00Z,   0.40,   2.78,  99.90,   1.58,  -1.59,
04/24 01Z,   0.40,   4.54,  99.90,   3.35,  -1.59,
04/24 02Z,   0.40,   6.10,  99.90,   4.91,  -1.59,
04/24 03Z,   0.40,   7.16,  99.90,   5.97,  -1.59,
04/24 04Z,   0.40,   7.58,  99.90,   6.39,  -1.59,  (max)
04/24 05Z,   0.40,   7.37,  99.90,   6.18,  -1.59,
04/24 06Z,   0.50,   6.64,  99.90,   5.55,  -1.59,
04/24 07Z,   0.50,   5.63,  99.90,   4.54,  -1.59,
04/24 08Z,   0.50,   4.71,  99.90,   3.62,  -1.59,
04/24 09Z,   0.60,   4.25,  99.90,   3.25,  -1.59,  (min)
04/24 10Z,   0.50,   4.39,  99.90,   3.30,  -1.59,
04/24 11Z,   0.50,   5.09,  99.90,   4.00,  -1.59,
04/24 12Z,   0.50,   6.17,  99.90,   5.08,  -1.59,
04/24 13Z,  99.90,   7.41,  99.90,  99.90,  -1.59,
04/24 14Z,  99.90,   8.47,  99.90,  99.90,  -1.59,
04/24 15Z,  99.90,   9.04,  99.90,  99.90,  -1.59,
04/24 16Z,  99.90,   8.92,  99.90,  99.90,  -1.59,
04/24 17Z,  99.90,   8.09,  99.90,  99.90,  -1.59,
04/24 18Z,  99.90,   6.63,  99.90,  99.90,  -1.59,