EXTRA-TROPICAL  STORM  SURGE
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hat-on
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Gulf of Alaska
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Unalaska, AK
Surge List
Gulf of Alaska
#Unalaska, AK : 08/18/2026 11:21:58 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/16 12Z,   0.20,   0.73,   1.23,  99.90,   0.30,
08/16 13Z,   0.20,   0.78,   1.29,  99.90,   0.31,  (min)
08/16 14Z,   0.20,   1.07,   1.59,  99.90,   0.32,
08/16 15Z,   0.20,   1.51,   2.08,  99.90,   0.37,
08/16 16Z,   0.30,   1.99,   2.61,  99.90,   0.32,
08/16 17Z,   0.30,   2.37,   3.02,  99.90,   0.35,
08/16 18Z,   0.20,   2.57,   3.09,  99.90,   0.32,  (max)
08/16 19Z,   0.20,   2.52,   3.07,  99.90,   0.35,
08/16 20Z,   0.20,   2.26,   2.77,  99.90,   0.31,
08/16 21Z,   0.20,   1.86,   2.32,  99.90,   0.26,
08/16 22Z,   0.20,   1.43,   1.87,  99.90,   0.24,
08/16 23Z,   0.10,   1.11,   1.64,  99.90,   0.43,
08/17 00Z,   0.00,   0.98,   1.42,  99.90,   0.44,  (min)
08/17 01Z,   0.00,   1.10,   1.52,  99.90,   0.42,
08/17 02Z,   0.00,   1.45,   1.76,  99.90,   0.31,
08/17 03Z,   0.00,   1.95,   2.29,  99.90,   0.34,
08/17 04Z,   0.00,   2.48,   2.84,  99.90,   0.36,
08/17 05Z,   0.00,   2.91,   3.27,  99.90,   0.36,
08/17 06Z,  -0.10,   3.14,   3.43,  99.90,   0.39,  (max)
08/17 07Z,  -0.10,   3.09,   3.30,  99.90,   0.31,
08/17 08Z,  -0.10,   2.77,   2.94,  99.90,   0.27,
08/17 09Z,  -0.20,   2.23,   2.37,  99.90,   0.34,
08/17 10Z,  -0.10,   1.58,   1.76,  99.90,   0.28,
08/17 11Z,  -0.10,   0.95,   1.11,  99.90,   0.26,
08/17 12Z,  -0.20,   0.47,   0.59,  99.90,   0.32,
08/17 13Z,  -0.20,   0.24,   0.33,  99.90,   0.29,  (min)
08/17 14Z,  -0.20,   0.31,   0.45,  99.90,   0.34,
08/17 15Z,  -0.20,   0.64,   0.76,  99.90,   0.32,
08/17 16Z,  -0.30,   1.16,   1.37,  99.90,   0.51,
08/17 17Z,  -0.30,   1.74,   1.90,  99.90,   0.46,
08/17 18Z,  -0.30,   2.25,   2.37,  99.90,   0.42,
08/17 19Z,  -0.30,   2.57,   2.64,  99.90,   0.37,
08/17 20Z,  -0.30,   2.66,   2.74,  99.90,   0.38,  (max)
08/17 21Z,  -0.30,   2.52,   2.61,  99.90,   0.39,
08/17 22Z,  -0.20,   2.21,   2.33,  99.90,   0.32,
08/17 23Z,  -0.20,   1.86,   1.94,  99.90,   0.28,
08/18 00Z,  -0.20,   1.58,   1.76,  99.90,   0.38,
08/18 01Z,  -0.20,   1.46,   1.60,  99.90,   0.34,  (min)
08/18 02Z,  -0.20,   1.56,   1.69,  99.90,   0.33,
08/18 03Z,  -0.20,   1.86,   2.07,  99.90,   0.41,
08/18 04Z,  -0.20,   2.28,   2.51,  99.90,   0.43,
08/18 05Z,  -0.20,   2.71,   2.99,  99.90,   0.48,
08/18 06Z,  -0.10,   3.04,   3.28,  99.90,   0.34,
08/18 07Z,  -0.10,   3.15,   3.30,  99.90,   0.25,  (max)
08/18 08Z,  -0.10,   3.00,   3.15,  99.90,   0.25,
08/18 09Z,  -0.10,   2.58,   2.69,  99.90,   0.21,
08/18 10Z,   0.00,   1.96,   2.08,  99.90,   0.12,
08/18 11Z,   0.00,   1.25,   1.36,  99.90,   0.11,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/18 12Z,   0.00,   0.58,  99.90,   0.71,   0.13,
08/18 13Z,   0.00,   0.09,  99.90,   0.23,   0.14,
08/18 14Z,   0.00,  -0.12,  99.90,   0.04,   0.15,  (min)
08/18 15Z,   0.00,  -0.01,  99.90,   0.16,   0.17,
08/18 16Z,   0.00,   0.39,  99.90,   0.57,   0.18,
08/18 17Z,   0.00,   0.99,  99.90,   1.18,   0.19,
08/18 18Z,   0.00,   1.66,  99.90,   1.86,   0.20,
08/18 19Z,   0.00,   2.26,  99.90,   2.47,   0.22,
08/18 20Z,   0.00,   2.67,  99.90,   2.90,   0.23,
08/18 21Z,   0.00,   2.84,  99.90,   3.09,   0.24,  (max)
08/18 22Z,   0.00,   2.78,  99.90,   3.03,   0.26,
08/18 23Z,   0.00,   2.54,  99.90,   2.81,   0.27,
08/19 00Z,   0.00,   2.23,  99.90,   2.50,   0.27,
08/19 01Z,   0.00,   1.98,  99.90,   2.25,   0.27,
08/19 02Z,   0.00,   1.87,  99.90,   2.14,   0.27,  (min)
08/19 03Z,   0.00,   1.95,  99.90,   2.22,   0.27,
08/19 04Z,   0.00,   2.20,  99.90,   2.47,   0.27,
08/19 05Z,   0.00,   2.55,  99.90,   2.82,   0.27,
08/19 06Z,   0.00,   2.90,  99.90,   3.16,   0.27,
08/19 07Z,   0.00,   3.12,  99.90,   3.39,   0.27,
08/19 08Z,   0.00,   3.13,  99.90,   3.40,   0.27,  (max)
08/19 09Z,  -0.10,   2.88,  99.90,   3.04,   0.27,
08/19 10Z,  -0.10,   2.37,  99.90,   2.54,   0.27,
08/19 11Z,  -0.10,   1.69,  99.90,   1.86,   0.27,
08/19 12Z,  -0.10,   0.94,  99.90,   1.11,   0.27,
08/19 13Z,  -0.10,   0.28,  99.90,   0.45,   0.27,
08/19 14Z,  -0.10,  -0.18,  99.90,  -0.01,   0.27,
08/19 15Z,  -0.10,  -0.34,  99.90,  -0.17,   0.27,  (min)
08/19 16Z,  -0.10,  -0.17,  99.90,   0.00,   0.27,
08/19 17Z,  -0.10,   0.30,  99.90,   0.47,   0.27,
08/19 18Z,  -0.10,   0.97,  99.90,   1.14,   0.27,
08/19 19Z,  -0.10,   1.70,  99.90,   1.87,   0.27,
08/19 20Z,  -0.10,   2.35,  99.90,   2.52,   0.27,
08/19 21Z,  -0.10,   2.81,  99.90,   2.98,   0.27,
08/19 22Z,  -0.10,   3.02,  99.90,   3.19,   0.27,  (max)
08/19 23Z,  -0.10,   2.99,  99.90,   3.16,   0.27,
08/20 00Z,  -0.10,   2.78,  99.90,   2.95,   0.27,
08/20 01Z,  -0.10,   2.51,  99.90,   2.68,   0.27,
08/20 02Z,  -0.20,   2.29,  99.90,   2.36,   0.27,
08/20 03Z,  -0.20,   2.19,  99.90,   2.26,   0.27,  (min)
08/20 04Z,  -0.20,   2.27,  99.90,   2.34,   0.27,
08/20 05Z,  -0.20,   2.49,  99.90,   2.55,   0.27,
08/20 06Z,  -0.20,   2.78,  99.90,   2.85,   0.27,
08/20 07Z,  -0.20,   3.04,  99.90,   3.11,   0.27,
08/20 08Z,  -0.20,   3.17,  99.90,   3.24,   0.27,  (max)
08/20 09Z,  -0.20,   3.07,  99.90,   3.14,   0.27,
08/20 10Z,  -0.20,   2.73,  99.90,   2.80,   0.27,
08/20 11Z,  -0.20,   2.16,  99.90,   2.23,   0.27,
08/20 12Z,  -0.20,   1.44,  99.90,   1.51,   0.27,
08/20 13Z,  -0.20,   0.69,  99.90,   0.76,   0.27,
08/20 14Z,  -0.30,   0.06,  99.90,   0.02,   0.27,
08/20 15Z,  -0.30,  -0.34,  99.90,  -0.38,   0.27,
08/20 16Z,  -0.30,  -0.43,  99.90,  -0.46,   0.27,  (min)
08/20 17Z,  -0.30,  -0.18,  99.90,  -0.21,   0.27,
08/20 18Z,  -0.20,   0.35,  99.90,   0.42,   0.27,
08/20 19Z,  -0.30,   1.07,  99.90,   1.03,   0.27,
08/20 20Z,  -0.30,   1.82,  99.90,   1.79,   0.27,
08/20 21Z,  -0.30,   2.48,  99.90,   2.44,   0.27,
08/20 22Z,  -0.30,   2.93,  99.90,   2.90,   0.27,
08/20 23Z,  -0.30,   3.14,  99.90,   3.11,   0.27,  (max)
08/21 00Z,  -0.30,   3.11,  99.90,   3.08,   0.27,
08/21 01Z,  -0.30,   2.93,  99.90,   2.90,   0.27,
08/21 02Z,  -0.30,   2.69,  99.90,   2.66,   0.27,
08/21 03Z,  -0.30,   2.51,  99.90,   2.48,   0.27,
08/21 04Z,  -0.30,   2.44,  99.90,   2.41,   0.27,  (min)
08/21 05Z,  -0.30,   2.53,  99.90,   2.50,   0.27,
08/21 06Z,  -0.20,   2.73,  99.90,   2.80,   0.27,
08/21 07Z,  -0.30,   2.98,  99.90,   2.95,   0.27,
08/21 08Z,  -0.30,   3.16,  99.90,   3.13,   0.27,
08/21 09Z,  -0.30,   3.19,  99.90,   3.16,   0.27,  (max)
08/21 10Z,  -0.20,   3.00,  99.90,   3.07,   0.27,
08/21 11Z,  -0.20,   2.57,  99.90,   2.64,   0.27,
08/21 12Z,  -0.20,   1.94,  99.90,   2.01,   0.27,
08/21 13Z,  -0.20,   1.20,  99.90,   1.27,   0.27,
08/21 14Z,  -0.10,   0.48,  99.90,   0.65,   0.27,
08/21 15Z,  -0.10,  -0.10,  99.90,   0.07,   0.27,
08/21 16Z,   0.00,  -0.42,  99.90,  -0.15,   0.27,  (min)
08/21 17Z,   0.00,  -0.42,  99.90,  -0.15,   0.27,
08/21 18Z,   0.00,  -0.09,  99.90,   0.18,   0.27,
08/21 19Z,   0.00,   0.49,  99.90,   0.76,   0.27,
08/21 20Z,   0.00,   1.22,  99.90,   1.49,   0.27,
08/21 21Z,   0.00,   1.96,  99.90,   2.23,   0.27,
08/21 22Z,   0.00,   2.58,  99.90,   2.85,   0.27,
08/21 23Z,   0.00,   3.00,  99.90,   3.27,   0.27,
08/22 00Z,   0.00,   3.18,  99.90,   3.44,   0.27,