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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Elfin Cove, AK
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Kodiak Island, AK
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Unalaska, AK
Surge List
Gulf of Alaska
#Elfin Cove, AK : 04/17/2026 18:21:16 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/16 00Z,  -0.20,   4.06,   2.49,  99.90,  -1.37,
04/16 01Z,  -0.20,   2.08,   0.49,  99.90,  -1.39,
04/16 02Z,  -0.30,   1.06,  -0.60,  99.90,  -1.36,  (min)
04/16 03Z,  -0.30,   1.29,  -0.40,  99.90,  -1.39,
04/16 04Z,  -0.30,   2.74,   1.09,  99.90,  -1.35,
04/16 05Z,  -0.30,   5.08,   3.42,  99.90,  -1.36,
04/16 06Z,  -0.30,   7.74,   6.12,  99.90,  -1.32,
04/16 07Z,  -0.30,  10.05,   8.46,  99.90,  -1.29,
04/16 08Z,  -0.30,  11.44,   9.96,  99.90,  -1.18,
04/16 09Z,  -0.30,  11.47,  10.09,  99.90,  -1.08,  (max)
04/16 10Z,  -0.40,  10.05,   8.65,  99.90,  -1.00,
04/16 11Z,  -0.40,   7.54,   6.13,  99.90,  -1.01,
04/16 12Z,  -0.40,   4.57,   3.22,  99.90,  -0.95,
04/16 13Z,  -0.40,   1.85,   0.56,  99.90,  -0.89,
04/16 14Z,  -0.40,   0.02,  -1.29,  99.90,  -0.91,
04/16 15Z,  -0.40,  -0.50,  -1.97,  99.90,  -1.07,  (min)
04/16 16Z,  -0.40,   0.39,  -1.18,  99.90,  -1.17,
04/16 17Z,  -0.40,   2.49,   0.86,  99.90,  -1.23,
04/16 18Z,  -0.30,   5.24,   3.50,  99.90,  -1.44,
04/16 19Z,  -0.30,   7.96,   6.18,  99.90,  -1.48,
04/16 20Z,  -0.40,  10.00,   8.17,  99.90,  -1.43,
04/16 21Z,  -0.40,  10.85,   9.04,  99.90,  -1.41,  (max)
04/16 22Z,  -0.40,  10.25,   8.43,  99.90,  -1.42,
04/16 23Z,  -0.40,   8.42,   6.62,  99.90,  -1.40,
04/17 00Z,  -0.30,   5.93,   4.13,  99.90,  -1.50,
04/17 01Z,  -0.40,   3.50,   1.72,  99.90,  -1.38,
04/17 02Z,  -0.40,   1.75,   0.05,  99.90,  -1.30,
04/17 03Z,  -0.40,   1.16,  -0.62,  99.90,  -1.38,  (min)
04/17 04Z,  -0.40,   1.92,   0.12,  99.90,  -1.40,
04/17 05Z,  -0.40,   3.88,   2.21,  99.90,  -1.27,
04/17 06Z,  -0.40,   6.58,   4.93,  99.90,  -1.25,
04/17 07Z,  -0.40,   9.34,   7.81,  99.90,  -1.13,
04/17 08Z,  -0.50,  11.47,   9.88,  99.90,  -1.09,
04/17 09Z,  -0.40,  12.37,  10.96,  99.90,  -1.01,  (max)
04/17 10Z,  -0.40,  11.71,  10.29,  99.90,  -1.02,
04/17 11Z,  -0.40,   9.53,   8.08,  99.90,  -1.05,
04/17 12Z,  -0.50,   6.40,   4.87,  99.90,  -1.03,
04/17 13Z,  -0.50,   3.07,   1.63,  99.90,  -0.94,
04/17 14Z,  -0.50,   0.31,  -1.14,  99.90,  -0.95,
04/17 15Z,  -0.50,  -1.29,  -2.82,  99.90,  -1.03,
04/17 16Z,  -0.60,  -1.38,  -2.97,  99.90,  -0.99,  (min)
04/17 17Z,  -0.50,   0.03,  -1.53,  99.90,  -1.06,
04/17 18Z,  -0.50,   2.59,   1.00,  99.90,  -1.09,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/17 19Z,  -0.50,   5.65,  99.90,   4.06,  -1.09,
04/17 20Z,  -0.40,   8.47,  99.90,   6.98,  -1.09,
04/17 21Z,  -0.40,  10.39,  99.90,   8.89,  -1.10,
04/17 22Z,  -0.40,  10.93,  99.90,   9.43,  -1.10,  (max)
04/17 23Z,  -0.30,   9.97,  99.90,   8.57,  -1.10,
04/18 00Z,  -0.30,   7.87,  99.90,   6.47,  -1.10,
04/18 01Z,  -0.40,   5.34,  99.90,   3.84,  -1.10,
04/18 02Z,  -0.40,   3.09,  99.90,   1.58,  -1.11,
04/18 03Z,  -0.40,   1.72,  99.90,   0.21,  -1.11,
04/18 04Z,  -0.40,   1.62,  99.90,   0.12,  -1.11,  (min)
04/18 05Z,  -0.40,   2.88,  99.90,   1.37,  -1.11,
04/18 06Z,  -0.40,   5.21,  99.90,   3.70,  -1.11,
04/18 07Z,  -0.40,   8.07,  99.90,   6.56,  -1.11,
04/18 08Z,  -0.40,  10.73,  99.90,   9.22,  -1.11,
04/18 09Z,  -0.40,  12.49,  99.90,  10.98,  -1.11,
04/18 10Z,  -0.40,  12.80,  99.90,  11.29,  -1.11,  (max)
04/18 11Z,  -0.40,  11.44,  99.90,   9.93,  -1.11,
04/18 12Z,  -0.40,   8.66,  99.90,   7.14,  -1.11,
04/18 13Z,  -0.30,   5.14,  99.90,   3.73,  -1.11,
04/18 14Z,  -0.30,   1.72,  99.90,   0.30,  -1.11,
04/18 15Z,  -0.40,  -0.88,  99.90,  -2.40,  -1.11,
04/18 16Z,  -0.40,  -2.12,  99.90,  -3.64,  -1.11,  (min)
04/18 17Z,  -0.40,  -1.76,  99.90,  -3.27,  -1.11,
04/18 18Z,  -0.40,   0.07,  99.90,  -1.44,  -1.11,
04/18 19Z,  -0.40,   2.92,  99.90,   1.41,  -1.11,
04/18 20Z,  -0.40,   6.08,  99.90,   4.57,  -1.11,
04/18 21Z,  -0.30,   8.81,  99.90,   7.40,  -1.11,
04/18 22Z,  -0.30,  10.46,  99.90,   9.05,  -1.11,
04/18 23Z,  -0.30,  10.65,  99.90,   9.24,  -1.11,  (max)
04/19 00Z,  -0.20,   9.42,  99.90,   8.11,  -1.11,
04/19 01Z,  -0.20,   7.25,  99.90,   5.93,  -1.11,
04/19 02Z,  -0.30,   4.86,  99.90,   3.44,  -1.11,
04/19 03Z,  -0.30,   2.94,  99.90,   1.52,  -1.11,
04/19 04Z,  -0.30,   2.01,  99.90,   0.60,  -1.11,  (min)
04/19 05Z,  -0.30,   2.37,  99.90,   0.96,  -1.11,
04/19 06Z,  -0.30,   3.99,  99.90,   2.57,  -1.11,
04/19 07Z,  -0.30,   6.51,  99.90,   5.09,  -1.11,
04/19 08Z,  -0.30,   9.32,  99.90,   7.91,  -1.11,
04/19 09Z,  -0.30,  11.70,  99.90,  10.29,  -1.11,
04/19 10Z,  -0.20,  12.97,  99.90,  11.66,  -1.11,  (max)
04/19 11Z,  -0.20,  12.69,  99.90,  11.38,  -1.11,
04/19 12Z,  -0.20,  10.79,  99.90,   9.47,  -1.11,
04/19 13Z,  -0.20,   7.65,  99.90,   6.34,  -1.11,
04/19 14Z,  -0.20,   4.04,  99.90,   2.72,  -1.11,
04/19 15Z,  -0.20,   0.75,  99.90,  -0.56,  -1.11,
04/19 16Z,  -0.20,  -1.54,  99.90,  -2.85,  -1.11,
04/19 17Z,  -0.20,  -2.39,  99.90,  -3.70,  -1.11,  (min)
04/19 18Z,  -0.20,  -1.67,  99.90,  -2.98,  -1.11,
04/19 19Z,  -0.20,   0.42,  99.90,  -0.90,  -1.11,
04/19 20Z,  -0.20,   3.35,  99.90,   2.03,  -1.11,
04/19 21Z,  -0.20,   6.41,  99.90,   5.10,  -1.11,
04/19 22Z,  -0.20,   8.87,  99.90,   7.56,  -1.11,
04/19 23Z,  -0.20,  10.19,  99.90,   8.88,  -1.11,  (max)
04/20 00Z,  -0.20,  10.10,  99.90,   8.79,  -1.11,
04/20 01Z,  -0.20,   8.75,  99.90,   7.44,  -1.11,
04/20 02Z,  -0.30,   6.69,  99.90,   5.27,  -1.11,
04/20 03Z,  -0.20,   4.59,  99.90,   3.28,  -1.11,
04/20 04Z,  -0.20,   3.07,  99.90,   1.76,  -1.11,
04/20 05Z,  -0.10,   2.56,  99.90,   1.35,  -1.11,  (min)
04/20 06Z,  -0.20,   3.25,  99.90,   1.94,  -1.11,
04/20 07Z,  -0.10,   5.04,  99.90,   3.83,  -1.11,
04/20 08Z,  -0.10,   7.54,  99.90,   6.33,  -1.11,
04/20 09Z,  -0.10,  10.13,  99.90,   8.92,  -1.11,
04/20 10Z,  -0.10,  12.11,  99.90,  10.90,  -1.11,
04/20 11Z,  -0.10,  12.89,  99.90,  11.67,  -1.11,  (max)
04/20 12Z,  -0.20,  12.15,  99.90,  10.84,  -1.11,
04/20 13Z,  -0.20,   9.95,  99.90,   8.64,  -1.11,
04/20 14Z,  -0.20,   6.75,  99.90,   5.44,  -1.11,
04/20 15Z,  -0.30,   3.29,  99.90,   1.88,  -1.11,
04/20 16Z,  -0.30,   0.31,  99.90,  -1.11,  -1.11,
04/20 17Z,  -0.20,  -1.62,  99.90,  -2.93,  -1.11,
04/20 18Z,  -0.20,  -2.14,  99.90,  -3.45,  -1.11,  (min)
04/20 19Z,  -0.20,  -1.21,  99.90,  -2.52,  -1.11,
04/20 20Z,  -0.10,   0.92,  99.90,  -0.29,  -1.11,
04/20 21Z,  -0.20,   3.73,  99.90,   2.42,  -1.11,
04/20 22Z,  -0.20,   6.51,  99.90,   5.20,  -1.11,
04/20 23Z,  -0.20,   8.63,  99.90,   7.32,  -1.11,
04/21 00Z,  -0.20,   9.66,  99.90,   8.35,  -1.11,  (max)
04/21 01Z,  -0.20,   9.43,  99.90,   8.12,  -1.11,
04/21 02Z,  -0.20,   8.14,  99.90,   6.83,  -1.11,
04/21 03Z,  -0.20,   6.33,  99.90,   5.02,  -1.11,
04/21 04Z,  -0.30,   4.60,  99.90,   3.19,  -1.11,
04/21 05Z,  -0.30,   3.46,  99.90,   2.05,  -1.11,
04/21 06Z,  -0.30,   3.25,  99.90,   1.84,  -1.11,  (min)
04/21 07Z,  -0.20,   4.09,  99.90,   2.78,  -1.11,
04/21 08Z,  -0.20,   5.86,  99.90,   4.55,  -1.11,
04/21 09Z,  -0.20,   8.15,  99.90,   6.84,  -1.11,
04/21 10Z,  -0.20,  10.38,  99.90,   9.07,  -1.11,
04/21 11Z,  -0.20,  11.93,  99.90,  10.61,  -1.11,
04/21 12Z,  -0.20,  12.33,  99.90,  11.01,  -1.11,