EXTRA-TROPICAL  STORM  SURGE
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hat-on
mhhw-on
msl-on
mllw-on
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Alaska
Gulf of Alaska
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Seward, AK
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Kodiak Island, AK
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Unalaska, AK
Surge List
Gulf of Alaska
#Seward, AK : 04/17/2026 05:22:45 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/15 12Z,   1.00,   4.25,   3.56,  99.90,  -1.69,
04/15 13Z,   1.00,   2.08,   1.28,  99.90,  -1.80,
04/15 14Z,   0.90,   0.75,  -0.12,  99.90,  -1.77,
04/15 15Z,   0.90,   0.56,  -0.34,  99.90,  -1.80,  (min)
04/15 16Z,   0.90,   1.55,   0.71,  99.90,  -1.74,
04/15 17Z,   1.00,   3.44,   2.53,  99.90,  -1.91,
04/15 18Z,   0.90,   5.78,   4.96,  99.90,  -1.72,
04/15 19Z,   0.90,   7.94,   7.06,  99.90,  -1.78,
04/15 20Z,   0.90,   9.33,   8.52,  99.90,  -1.71,
04/15 21Z,   1.00,   9.61,   8.76,  99.90,  -1.85,  (max)
04/15 22Z,   1.00,   8.76,   7.78,  99.90,  -1.98,
04/15 23Z,   1.00,   6.97,   6.09,  99.90,  -1.88,
04/16 00Z,   0.90,   4.65,   3.82,  99.90,  -1.73,
04/16 01Z,   0.90,   2.40,   1.38,  99.90,  -1.92,
04/16 02Z,   0.80,   0.88,  -0.07,  99.90,  -1.75,
04/16 03Z,   0.80,   0.53,  -0.48,  99.90,  -1.81,  (min)
04/16 04Z,   0.80,   1.45,   0.53,  99.90,  -1.72,
04/16 05Z,   0.80,   3.43,   2.52,  99.90,  -1.71,
04/16 06Z,   0.80,   6.01,   5.12,  99.90,  -1.69,
04/16 07Z,   0.80,   8.55,   7.67,  99.90,  -1.68,
04/16 08Z,   0.80,  10.36,   9.48,  99.90,  -1.68,
04/16 09Z,   0.80,  10.97,  10.14,  99.90,  -1.63,  (max)
04/16 10Z,   0.70,  10.24,   9.40,  99.90,  -1.54,
04/16 11Z,   0.70,   8.34,   7.47,  99.90,  -1.57,
04/16 12Z,   0.70,   5.64,   4.75,  99.90,  -1.59,
04/16 13Z,   0.70,   2.76,   2.00,  99.90,  -1.46,
04/16 14Z,   0.60,   0.44,  -0.42,  99.90,  -1.46,
04/16 15Z,   0.60,  -0.72,  -1.64,  99.90,  -1.52,  (min)
04/16 16Z,   0.60,  -0.46,  -1.36,  99.90,  -1.50,
04/16 17Z,   0.70,   1.10,   0.14,  99.90,  -1.66,
04/16 18Z,   0.70,   3.56,   2.61,  99.90,  -1.65,
04/16 19Z,   0.70,   6.29,   5.35,  99.90,  -1.64,
04/16 20Z,   0.80,   8.59,   7.71,  99.90,  -1.68,
04/16 21Z,   0.80,   9.87,   8.99,  99.90,  -1.68,  (max)
04/16 22Z,   0.80,   9.86,   8.95,  99.90,  -1.71,
04/16 23Z,   0.80,   8.65,   7.72,  99.90,  -1.73,
04/17 00Z,   0.80,   6.54,   5.83,  99.90,  -1.51,
04/17 01Z,   0.80,   4.05,   3.40,  99.90,  -1.45,
04/17 02Z,   0.90,   1.88,   1.06,  99.90,  -1.72,
04/17 03Z,   0.90,   0.70,  -0.09,  99.90,  -1.69,  (min)
04/17 04Z,   0.90,   0.89,   0.14,  99.90,  -1.65,
04/17 05Z,   0.90,   2.41,   1.64,  99.90,  -1.67,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/17 06Z,   0.80,   4.89,  99.90,   4.02,  -1.67,
04/17 07Z,   0.80,   7.73,  99.90,   6.87,  -1.67,
04/17 08Z,   0.90,  10.21,  99.90,   9.44,  -1.67,
04/17 09Z,   0.90,  11.63,  99.90,  10.87,  -1.66,  (max)
04/17 10Z,   0.90,  11.62,  99.90,  10.85,  -1.66,
04/17 11Z,   0.90,  10.16,  99.90,   9.40,  -1.66,
04/17 12Z,   0.80,   7.56,  99.90,   6.70,  -1.66,
04/17 13Z,   0.80,   4.34,  99.90,   3.47,  -1.66,
04/17 14Z,   0.80,   1.21,  99.90,   0.34,  -1.66,
04/17 15Z,   0.80,  -1.03,  99.90,  -1.89,  -1.66,
04/17 16Z,   0.80,  -1.82,  99.90,  -2.69,  -1.66,  (min)
04/17 17Z,   0.70,  -1.04,  99.90,  -2.00,  -1.66,
04/17 18Z,   0.70,   1.07,  99.90,   0.11,  -1.66,
04/17 19Z,   0.70,   3.95,  99.90,   2.98,  -1.66,
04/17 20Z,   0.70,   6.87,  99.90,   5.91,  -1.66,
04/17 21Z,   0.70,   9.11,  99.90,   8.14,  -1.66,
04/17 22Z,   0.70,  10.13,  99.90,   9.17,  -1.66,  (max)
04/17 23Z,   0.80,   9.79,  99.90,   8.92,  -1.66,
04/18 00Z,   0.70,   8.26,  99.90,   7.30,  -1.66,
04/18 01Z,   0.70,   5.96,  99.90,   5.00,  -1.66,
04/18 02Z,   0.70,   3.49,  99.90,   2.53,  -1.66,
04/18 03Z,   0.80,   1.60,  99.90,   0.74,  -1.66,
04/18 04Z,   0.80,   0.91,  99.90,   0.04,  -1.66,  (min)
04/18 05Z,   0.80,   1.66,  99.90,   0.80,  -1.66,
04/18 06Z,   0.80,   3.69,  99.90,   2.82,  -1.66,
04/18 07Z,   0.80,   6.48,  99.90,   5.62,  -1.66,
04/18 08Z,   0.80,   9.34,  99.90,   8.48,  -1.66,
04/18 09Z,   0.80,  11.52,  99.90,  10.66,  -1.66,
04/18 10Z,   0.80,  12.40,  99.90,  11.54,  -1.66,  (max)
04/18 11Z,   0.90,  11.73,  99.90,  10.97,  -1.66,
04/18 12Z,   0.90,   9.63,  99.90,   8.87,  -1.66,
04/18 13Z,   0.80,   6.52,  99.90,   5.65,  -1.66,
04/18 14Z,   0.80,   3.01,  99.90,   2.15,  -1.66,
04/18 15Z,   0.80,  -0.11,  99.90,  -0.97,  -1.66,
04/18 16Z,   0.80,  -2.06,  99.90,  -2.93,  -1.66,
04/18 17Z,   0.80,  -2.39,  99.90,  -3.26,  -1.66,  (min)
04/18 18Z,   0.80,  -1.11,  99.90,  -1.97,  -1.66,
04/18 19Z,   0.70,   1.39,  99.90,   0.42,  -1.66,
04/18 20Z,   0.80,   4.46,  99.90,   3.59,  -1.66,
04/18 21Z,   0.80,   7.34,  99.90,   6.48,  -1.66,
04/18 22Z,   0.80,   9.34,  99.90,   8.48,  -1.66,
04/18 23Z,   0.80,  10.03,  99.90,   9.17,  -1.66,  (max)
04/19 00Z,   0.90,   9.39,  99.90,   8.63,  -1.66,
04/19 01Z,   0.90,   7.68,  99.90,   6.91,  -1.66,
04/19 02Z,   0.80,   5.37,  99.90,   4.51,  -1.66,
04/19 03Z,   0.90,   3.12,  99.90,   2.35,  -1.66,
04/19 04Z,   0.80,   1.64,  99.90,   0.78,  -1.66,
04/19 05Z,   0.80,   1.47,  99.90,   0.61,  -1.66,  (min)
04/19 06Z,   0.90,   2.72,  99.90,   1.96,  -1.66,
04/19 07Z,   0.90,   5.06,  99.90,   4.30,  -1.66,
04/19 08Z,   1.00,   7.92,  99.90,   7.26,  -1.66,
04/19 09Z,   0.90,  10.57,  99.90,   9.80,  -1.66,
04/19 10Z,   1.00,  12.29,  99.90,  11.63,  -1.66,
04/19 11Z,   1.00,  12.59,  99.90,  11.93,  -1.66,  (max)
04/19 12Z,   1.00,  11.35,  99.90,  10.69,  -1.66,
04/19 13Z,   0.90,   8.81,  99.90,   8.04,  -1.66,
04/19 14Z,   0.90,   5.45,  99.90,   4.68,  -1.66,
04/19 15Z,   0.80,   1.93,  99.90,   1.06,  -1.66,
04/19 16Z,   0.90,  -0.96,  99.90,  -1.72,  -1.66,
04/19 17Z,   0.90,  -2.51,  99.90,  -3.27,  -1.66,  (min)
04/19 18Z,   1.00,  -2.40,  99.90,  -3.06,  -1.66,
04/19 19Z,   1.00,  -0.77,  99.90,  -1.43,  -1.66,
04/19 20Z,   1.00,   1.89,  99.90,   1.23,  -1.66,
04/19 21Z,   1.10,   4.90,  99.90,   4.34,  -1.66,
04/19 22Z,   1.10,   7.55,  99.90,   6.98,  -1.66,
04/19 23Z,   1.10,   9.21,  99.90,   8.65,  -1.66,
04/20 00Z,   1.10,   9.60,  99.90,   9.03,  -1.66,  (max)
04/20 01Z,   1.00,   8.76,  99.90,   8.10,  -1.66,
04/20 02Z,   1.00,   7.04,  99.90,   6.38,  -1.66,
04/20 03Z,   1.00,   4.91,  99.90,   4.25,  -1.66,
04/20 04Z,   1.00,   3.01,  99.90,   2.35,  -1.66,
04/20 05Z,   1.00,   2.00,  99.90,   1.34,  -1.66,  (min)
04/20 06Z,   1.00,   2.29,  99.90,   1.62,  -1.66,
04/20 07Z,   1.10,   3.84,  99.90,   3.28,  -1.66,
04/20 08Z,   1.20,   6.27,  99.90,   5.80,  -1.66,
04/20 09Z,   1.20,   8.95,  99.90,   8.49,  -1.66,
04/20 10Z,   1.30,  11.21,  99.90,  10.85,  -1.66,
04/20 11Z,   1.30,  12.43,  99.90,  12.07,  -1.66,  (max)
04/20 12Z,   1.20,  12.24,  99.90,  11.78,  -1.66,
04/20 13Z,   1.20,  10.63,  99.90,  10.17,  -1.66,
04/20 14Z,   1.10,   7.91,  99.90,   7.35,  -1.66,
04/20 15Z,   1.00,   4.58,  99.90,   3.92,  -1.66,
04/20 16Z,   1.10,   1.29,  99.90,   0.73,  -1.66,
04/20 17Z,   1.00,  -1.22,  99.90,  -1.89,  -1.66,
04/20 18Z,   1.10,  -2.37,  99.90,  -2.93,  -1.66,  (min)
04/20 19Z,   1.10,  -1.94,  99.90,  -2.50,  -1.66,
04/20 20Z,   1.10,  -0.18,  99.90,  -0.75,  -1.66,
04/20 21Z,   1.20,   2.39,  99.90,   1.92,  -1.66,
04/20 22Z,   1.20,   5.14,  99.90,   4.68,  -1.66,
04/20 23Z,   1.20,   7.43,  99.90,   6.97,  -1.66,
04/21 00Z,   1.10,   8.76,  99.90,   8.20,  -1.66,