EXTRA-TROPICAL  STORM  SURGE
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Gulf of Alaska
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Surge List
Gulf of Alaska
#Sitka, AK : 04/21/2026 18:21:55 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 00Z,  -0.10,  -3.71,  -4.15,  99.90,  -0.34,  (max)
04/20 01Z,   0.00,  -4.90,  -5.34,  99.90,  -0.44,
04/20 02Z,   0.00,  -6.73,  -7.03,  99.90,  -0.30,
04/20 03Z,   0.00,  -8.60,  -8.85,  99.90,  -0.25,
04/20 04Z,   0.00,  -9.93, -10.13,  99.90,  -0.20,
04/20 05Z,   0.00, -10.29, -10.48,  99.90,  -0.19,  (min)
04/20 06Z,   0.00,  -9.52,  -9.72,  99.90,  -0.20,
04/20 07Z,   0.00,  -7.76,  -7.95,  99.90,  -0.19,
04/20 08Z,   0.00,  -5.44,  -5.70,  99.90,  -0.26,
04/20 09Z,   0.00,  -3.18,  -3.44,  99.90,  -0.26,
04/20 10Z,   0.00,  -1.57,  -1.93,  99.90,  -0.36,
04/20 11Z,   0.00,  -1.10,  -1.42,  99.90,  -0.32,  (max)
04/20 12Z,   0.00,  -1.97,  -2.27,  99.90,  -0.30,
04/20 13Z,   0.00,  -4.07,  -4.37,  99.90,  -0.30,
04/20 14Z,   0.00,  -7.00,  -7.23,  99.90,  -0.23,
04/20 15Z,   0.00, -10.14, -10.45,  99.90,  -0.31,
04/20 16Z,   0.00, -12.83, -13.09,  99.90,  -0.26,
04/20 17Z,   0.00, -14.52, -14.90,  99.90,  -0.38,
04/20 18Z,   0.00, -14.87, -15.22,  99.90,  -0.35,  (min)
04/20 19Z,  -0.10, -13.87, -14.21,  99.90,  -0.24,
04/20 20Z,  -0.10, -11.83, -12.20,  99.90,  -0.27,
04/20 21Z,  -0.10,  -9.25,  -9.74,  99.90,  -0.39,
04/20 22Z,  -0.10,  -6.75,  -7.31,  99.90,  -0.46,
04/20 23Z,  -0.10,  -4.89,  -5.46,  99.90,  -0.47,
04/21 00Z,  -0.10,  -4.04,  -4.58,  99.90,  -0.44,  (max)
04/21 01Z,  -0.20,  -4.28,  -4.74,  99.90,  -0.26,
04/21 02Z,  -0.20,  -5.41,  -5.84,  99.90,  -0.23,
04/21 03Z,  -0.20,  -7.01,  -7.36,  99.90,  -0.15,
04/21 04Z,  -0.20,  -8.55,  -8.86,  99.90,  -0.11,
04/21 05Z,  -0.10,  -9.52,  -9.83,  99.90,  -0.21,
04/21 06Z,  -0.10,  -9.58,  -9.87,  99.90,  -0.19,  (min)
04/21 07Z,  -0.10,  -8.66,  -9.01,  99.90,  -0.25,
04/21 08Z,  -0.20,  -6.95,  -7.28,  99.90,  -0.13,
04/21 09Z,  -0.10,  -4.88,  -5.29,  99.90,  -0.31,
04/21 10Z,  -0.10,  -2.98,  -3.41,  99.90,  -0.33,
04/21 11Z,  -0.10,  -1.78,  -2.21,  99.90,  -0.33,
04/21 12Z,  -0.10,  -1.66,  -2.11,  99.90,  -0.35,  (max)
04/21 13Z,  -0.10,  -2.73,  -3.17,  99.90,  -0.34,
04/21 14Z,  -0.20,  -4.85,  -5.19,  99.90,  -0.14,
04/21 15Z,  -0.20,  -7.60,  -8.00,  99.90,  -0.20,
04/21 16Z,  -0.20, -10.43, -10.78,  99.90,  -0.15,
04/21 17Z,  -0.20, -12.75, -13.15,  99.90,  -0.20,
04/21 18Z,  -0.20, -14.11, -14.57,  99.90,  -0.26,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/21 19Z,  -0.10, -14.27,  99.90, -14.63,  -0.26,  (min)
04/21 20Z,  -0.10, -13.26,  99.90, -13.62,  -0.26,
04/21 21Z,  -0.10, -11.37,  99.90, -11.74,  -0.27,
04/21 22Z,  -0.10,  -9.06,  99.90,  -9.44,  -0.27,
04/21 23Z,  -0.20,  -6.89,  99.90,  -7.37,  -0.28,
04/22 00Z,  -0.20,  -5.31,  99.90,  -5.79,  -0.28,
04/22 01Z,  -0.20,  -4.60,  99.90,  -5.09,  -0.29,  (max)
04/22 02Z,  -0.30,  -4.82,  99.90,  -5.41,  -0.29,
04/22 03Z,  -0.20,  -5.77,  99.90,  -6.26,  -0.30,
04/22 04Z,  -0.20,  -7.07,  99.90,  -7.57,  -0.30,
04/22 05Z,  -0.20,  -8.28,  99.90,  -8.79,  -0.31,
04/22 06Z,  -0.30,  -8.99,  99.90,  -9.60,  -0.31,  (min)
04/22 07Z,  -0.30,  -8.93,  99.90,  -9.54,  -0.31,
04/22 08Z,  -0.30,  -8.06,  99.90,  -8.68,  -0.31,
04/22 09Z,  -0.20,  -6.58,  99.90,  -7.10,  -0.31,
04/22 10Z,  -0.30,  -4.86,  99.90,  -5.47,  -0.31,
04/22 11Z,  -0.30,  -3.34,  99.90,  -3.95,  -0.31,
04/22 12Z,  -0.30,  -2.45,  99.90,  -3.07,  -0.31,  (max)
04/22 13Z,  -0.30,  -2.50,  99.90,  -3.11,  -0.31,
04/22 14Z,  -0.40,  -3.55,  99.90,  -4.26,  -0.31,
04/22 15Z,  -0.40,  -5.45,  99.90,  -6.17,  -0.31,
04/22 16Z,  -0.50,  -7.86,  99.90,  -8.67,  -0.31,
04/22 17Z,  -0.50, -10.30,  99.90, -11.11,  -0.31,
04/22 18Z,  -0.50, -12.28,  99.90, -13.09,  -0.31,
04/22 19Z,  -0.50, -13.42,  99.90, -14.24,  -0.31,
04/22 20Z,  -0.50, -13.55,  99.90, -14.36,  -0.31,  (min)
04/22 21Z,  -0.50, -12.67,  99.90, -13.49,  -0.31,
04/22 22Z,  -0.50, -11.06,  99.90, -11.87,  -0.31,
04/22 23Z,  -0.50,  -9.08,  99.90,  -9.90,  -0.31,
04/23 00Z,  -0.50,  -7.20,  99.90,  -8.01,  -0.31,
04/23 01Z,  -0.50,  -5.79,  99.90,  -6.60,  -0.31,
04/23 02Z,  -0.50,  -5.09,  99.90,  -5.91,  -0.31,  (max)
04/23 03Z,  -0.50,  -5.17,  99.90,  -5.98,  -0.31,
04/23 04Z,  -0.50,  -5.86,  99.90,  -6.68,  -0.31,
04/23 05Z,  -0.60,  -6.88,  99.90,  -7.80,  -0.31,
04/23 06Z,  -0.60,  -7.87,  99.90,  -8.78,  -0.31,
04/23 07Z,  -0.50,  -8.47,  99.90,  -9.29,  -0.31,
04/23 08Z,  -0.50,  -8.48,  99.90,  -9.30,  -0.31,  (min)
04/23 09Z,  -0.60,  -7.85,  99.90,  -8.77,  -0.31,
04/23 10Z,  -0.60,  -6.72,  99.90,  -7.63,  -0.31,
04/23 11Z,  -0.60,  -5.36,  99.90,  -6.27,  -0.31,
04/23 12Z,  -0.60,  -4.14,  99.90,  -5.05,  -0.31,
04/23 13Z,  -0.60,  -3.41,  99.90,  -4.32,  -0.31,  (max)
04/23 14Z,  -0.60,  -3.42,  99.90,  -4.33,  -0.31,
04/23 15Z,  -0.60,  -4.25,  99.90,  -5.16,  -0.31,
04/23 16Z,  -0.60,  -5.80,  99.90,  -6.71,  -0.31,
04/23 17Z,  -0.60,  -7.79,  99.90,  -8.71,  -0.31,
04/23 18Z,  -0.60,  -9.86,  99.90, -10.77,  -0.31,
04/23 19Z,  -0.60, -11.59,  99.90, -12.50,  -0.31,
04/23 20Z,  -0.60, -12.66,  99.90, -13.57,  -0.31,
04/23 21Z,  -0.60, -12.88,  99.90, -13.79,  -0.31,  (min)
04/23 22Z,  -0.60, -12.24,  99.90, -13.15,  -0.31,
04/23 23Z,  -0.50, -10.92,  99.90, -11.73,  -0.31,
04/24 00Z,  -0.50,  -9.22,  99.90, -10.03,  -0.31,
04/24 01Z,  -0.50,  -7.51,  99.90,  -8.32,  -0.31,
04/24 02Z,  -0.50,  -6.13,  99.90,  -6.95,  -0.31,
04/24 03Z,  -0.60,  -5.34,  99.90,  -6.25,  -0.31,
04/24 04Z,  -0.60,  -5.21,  99.90,  -6.13,  -0.31,  (max)
04/24 05Z,  -0.70,  -5.68,  99.90,  -6.69,  -0.31,
04/24 06Z,  -0.70,  -6.52,  99.90,  -7.54,  -0.31,
04/24 07Z,  -0.60,  -7.44,  99.90,  -8.36,  -0.31,
04/24 08Z,  -0.60,  -8.14,  99.90,  -9.06,  -0.31,
04/24 09Z,  -0.60,  -8.39,  99.90,  -9.31,  -0.31,  (min)
04/24 10Z,  -0.60,  -8.10,  99.90,  -9.01,  -0.31,
04/24 11Z,  -0.60,  -7.32,  99.90,  -8.23,  -0.31,
04/24 12Z,  -0.60,  -6.25,  99.90,  -7.17,  -0.31,
04/24 13Z,  -0.60,  -5.19,  99.90,  -6.10,  -0.31,
04/24 14Z,  -0.70,  -4.43,  99.90,  -5.44,  -0.31,
04/24 15Z,  -0.70,  -4.23,  99.90,  -5.25,  -0.31,  (max)
04/24 16Z,  -0.70,  -4.73,  99.90,  -5.74,  -0.31,
04/24 17Z,  -0.70,  -5.87,  99.90,  -6.89,  -0.31,
04/24 18Z,  -0.70,  -7.50,  99.90,  -8.51,  -0.31,
04/24 19Z,  -0.70,  -9.29,  99.90, -10.30,  -0.31,
04/24 20Z,  -0.60, -10.90,  99.90, -11.81,  -0.31,
04/24 21Z,  -0.60, -12.01,  99.90, -12.92,  -0.31,
04/24 22Z,  -0.60, -12.39,  99.90, -13.30,  -0.31,  (min)
04/24 23Z,  -0.60, -11.97,  99.90, -12.89,  -0.31,
04/25 00Z,  -0.60, -10.87,  99.90, -11.78,  -0.31,
04/25 01Z,  -0.60,  -9.31,  99.90, -10.22,  -0.31,
04/25 02Z,  -0.60,  -7.63,  99.90,  -8.54,  -0.31,
04/25 03Z,  -0.60,  -6.18,  99.90,  -7.09,  -0.31,
04/25 04Z,  -0.70,  -5.23,  99.90,  -6.25,  -0.31,
04/25 05Z,  -0.70,  -4.94,  99.90,  -5.95,  -0.31,  (max)
04/25 06Z,  -0.70,  -5.30,  99.90,  -6.31,  -0.31,
04/25 07Z,  -0.70,  -6.13,  99.90,  -7.15,  -0.31,
04/25 08Z,  -0.70,  -7.18,  99.90,  -8.20,  -0.31,
04/25 09Z,  -0.70,  -8.14,  99.90,  -9.15,  -0.31,
04/25 10Z,  -0.60,  -8.73,  99.90,  -9.64,  -0.31,
04/25 11Z,  -0.60,  -8.78,  99.90,  -9.69,  -0.31,  (min)
04/25 12Z,  -0.50,  -8.27,  99.90,  -9.09,  -0.31,