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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Kodiak Island, AK
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Atka, AK
Unalaska, AK
Surge List
Gulf of Alaska
#Seward, AK : 04/10/2026 15:21:11 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/09 00Z,   0.60,   4.66,   3.74,  99.90,  -1.52,
04/09 01Z,   0.60,   5.69,   4.73,  99.90,  -1.56,
04/09 02Z,   0.60,   6.34,   5.39,  99.90,  -1.55,
04/09 03Z,   0.50,   6.51,   5.60,  99.90,  -1.41,  (max)
04/09 04Z,   0.40,   6.28,   5.40,  99.90,  -1.28,
04/09 05Z,   0.40,   5.81,   5.00,  99.90,  -1.21,
04/09 06Z,   0.50,   5.26,   4.44,  99.90,  -1.32,
04/09 07Z,   0.50,   4.84,   3.93,  99.90,  -1.41,
04/09 08Z,   0.50,   4.79,   3.89,  99.90,  -1.40,  (min)
04/09 09Z,   0.50,   5.21,   4.25,  99.90,  -1.46,
04/09 10Z,   0.50,   6.02,   5.02,  99.90,  -1.50,
04/09 11Z,   0.40,   6.99,   5.97,  99.90,  -1.42,
04/09 12Z,   0.50,   7.88,   6.99,  99.90,  -1.39,
04/09 13Z,   0.50,   8.50,   7.59,  99.90,  -1.41,
04/09 14Z,   0.40,   8.67,   7.66,  99.90,  -1.41,  (max)
04/09 15Z,   0.40,   8.29,   7.27,  99.90,  -1.42,
04/09 16Z,   0.30,   7.39,   6.41,  99.90,  -1.28,
04/09 17Z,   0.30,   6.15,   5.18,  99.90,  -1.27,
04/09 18Z,   0.40,   4.76,   3.68,  99.90,  -1.48,
04/09 19Z,   0.40,   3.42,   2.38,  99.90,  -1.44,
04/09 20Z,   0.40,   2.39,   1.36,  99.90,  -1.43,
04/09 21Z,   0.40,   1.90,   0.78,  99.90,  -1.52,  (min)
04/09 22Z,   0.40,   1.98,   0.89,  99.90,  -1.49,
04/09 23Z,   0.40,   2.53,   1.40,  99.90,  -1.53,
04/10 00Z,   0.40,   3.37,   2.29,  99.90,  -1.48,
04/10 01Z,   0.40,   4.34,   3.23,  99.90,  -1.51,
04/10 02Z,   0.50,   5.25,   4.20,  99.90,  -1.55,
04/10 03Z,   0.40,   5.92,   4.85,  99.90,  -1.47,
04/10 04Z,   0.40,   6.23,   5.20,  99.90,  -1.43,
04/10 05Z,   0.30,   6.23,   5.29,  99.90,  -1.24,  (max)
04/10 06Z,   0.40,   5.99,   5.04,  99.90,  -1.35,
04/10 07Z,   0.50,   5.63,   4.68,  99.90,  -1.45,
04/10 08Z,   0.50,   5.30,   4.16,  99.90,  -1.64,
04/10 09Z,   0.40,   5.21,   4.14,  99.90,  -1.47,  (min)
04/10 10Z,   0.40,   5.46,   4.38,  99.90,  -1.48,
04/10 11Z,   0.40,   6.00,   4.81,  99.90,  -1.59,
04/10 12Z,   0.40,   6.66,   5.54,  99.90,  -1.52,
04/10 13Z,   0.30,   7.32,   6.29,  99.90,  -1.33,
04/10 14Z,   0.30,   7.84,   6.69,  99.90,  -1.45,
04/10 15Z,   0.40,   8.05,   6.84,  99.90,  -1.61,  (max)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/10 16Z,   0.40,   7.83,  99.90,   6.63,  -1.60,
04/10 17Z,   0.40,   7.17,  99.90,   5.98,  -1.59,
04/10 18Z,   0.50,   6.18,  99.90,   5.10,  -1.58,
04/10 19Z,   0.50,   4.98,  99.90,   3.91,  -1.57,
04/10 20Z,   0.60,   3.74,  99.90,   2.79,  -1.56,
04/10 21Z,   0.60,   2.71,  99.90,   1.76,  -1.54,
04/10 22Z,   0.60,   2.10,  99.90,   1.17,  -1.53,
04/10 23Z,   0.60,   2.00,  99.90,   1.08,  -1.52,  (min)
04/11 00Z,   0.50,   2.35,  99.90,   1.34,  -1.51,
04/11 01Z,   0.50,   3.06,  99.90,   2.06,  -1.50,
04/11 02Z,   0.50,   4.02,  99.90,   3.03,  -1.49,
04/11 03Z,   0.50,   5.04,  99.90,   4.06,  -1.48,
04/11 04Z,   0.50,   5.89,  99.90,   4.91,  -1.48,
04/11 05Z,   0.60,   6.42,  99.90,   5.54,  -1.48,
04/11 06Z,   0.60,   6.59,  99.90,   5.71,  -1.48,  (max)
04/11 07Z,   0.50,   6.44,  99.90,   5.46,  -1.48,
04/11 08Z,   0.50,   6.04,  99.90,   5.06,  -1.48,
04/11 09Z,   0.60,   5.56,  99.90,   4.68,  -1.48,
04/11 10Z,   0.60,   5.23,  99.90,   4.35,  -1.48,
04/11 11Z,   0.60,   5.20,  99.90,   4.33,  -1.48,  (min)
04/11 12Z,   0.60,   5.47,  99.90,   4.60,  -1.48,
04/11 13Z,   0.60,   5.97,  99.90,   5.09,  -1.48,
04/11 14Z,   0.60,   6.62,  99.90,   5.74,  -1.48,
04/11 15Z,   0.50,   7.27,  99.90,   6.29,  -1.48,
04/11 16Z,   0.60,   7.71,  99.90,   6.83,  -1.48,
04/11 17Z,   0.70,   7.74,  99.90,   6.96,  -1.48,  (max)
04/11 18Z,   0.70,   7.31,  99.90,   6.53,  -1.48,
04/11 19Z,   0.70,   6.46,  99.90,   5.68,  -1.48,
04/11 20Z,   0.80,   5.28,  99.90,   4.60,  -1.48,
04/11 21Z,   0.70,   3.95,  99.90,   3.17,  -1.48,
04/11 22Z,   0.70,   2.74,  99.90,   1.97,  -1.48,
04/11 23Z,   0.70,   1.95,  99.90,   1.17,  -1.48,
04/12 00Z,   0.80,   1.70,  99.90,   1.02,  -1.48,  (min)
04/12 01Z,   0.80,   2.00,  99.90,   1.32,  -1.48,
04/12 02Z,   0.70,   2.80,  99.90,   2.02,  -1.48,
04/12 03Z,   0.70,   3.97,  99.90,   3.20,  -1.48,
04/12 04Z,   0.70,   5.27,  99.90,   4.49,  -1.48,
04/12 05Z,   0.80,   6.36,  99.90,   5.69,  -1.48,
04/12 06Z,   0.80,   7.05,  99.90,   6.37,  -1.48,
04/12 07Z,   0.90,   7.25,  99.90,   6.67,  -1.48,  (max)
04/12 08Z,   0.90,   6.95,  99.90,   6.38,  -1.48,
04/12 09Z,   1.00,   6.27,  99.90,   5.79,  -1.48,
04/12 10Z,   1.00,   5.43,  99.90,   4.95,  -1.48,
04/12 11Z,   1.00,   4.74,  99.90,   4.26,  -1.48,
04/12 12Z,   1.00,   4.43,  99.90,   3.95,  -1.48,  (min)
04/12 13Z,   1.00,   4.56,  99.90,   4.08,  -1.48,
04/12 14Z,   1.00,   5.11,  99.90,   4.63,  -1.48,
04/12 15Z,   1.00,   5.98,  99.90,   5.50,  -1.48,
04/12 16Z,   1.00,   6.95,  99.90,   6.48,  -1.48,
04/12 17Z,   1.00,   7.72,  99.90,   7.24,  -1.48,
04/12 18Z,   1.00,   8.01,  99.90,   7.53,  -1.48,  (max)
04/12 19Z,   0.90,   7.70,  99.90,   7.13,  -1.48,
04/12 20Z,   1.10,   6.83,  99.90,   6.45,  -1.48,
04/12 21Z,   0.90,   5.48,  99.90,   4.90,  -1.48,
04/12 22Z,   0.70,   3.90,  99.90,   3.12,  -1.48,
04/12 23Z,   1.10,   2.46,  99.90,   2.08,  -1.48,
04/13 00Z,   1.20,   1.52,  99.90,   1.24,  -1.48,
04/13 01Z,   1.10,   1.26,  99.90,   0.88,  -1.48,  (min)
04/13 02Z,   1.00,   1.73,  99.90,   1.25,  -1.48,
04/13 03Z,   1.10,   2.85,  99.90,   2.47,  -1.48,
04/13 04Z,   1.30,   4.41,  99.90,   4.23,  -1.48,
04/13 05Z,   1.20,   6.03,  99.90,   5.76,  -1.48,
04/13 06Z,   1.40,   7.32,  99.90,   7.24,  -1.48,
04/13 07Z,   1.20,   8.00,  99.90,   7.72,  -1.48,  (max)
04/13 08Z,   1.10,   7.97,  99.90,   7.60,  -1.48,
04/13 09Z,   1.10,   7.28,  99.90,   6.90,  -1.48,
04/13 10Z,   1.20,   6.10,  99.90,   5.82,  -1.48,
04/13 11Z,   1.10,   4.77,  99.90,   4.40,  -1.48,
04/13 12Z,   1.10,   3.73,  99.90,   3.35,  -1.48,
04/13 13Z,   1.10,   3.25,  99.90,   2.88,  -1.48,  (min)
04/13 14Z,   1.10,   3.45,  99.90,   3.08,  -1.48,
04/13 15Z,   1.10,   4.29,  99.90,   3.91,  -1.48,
04/13 16Z,   1.20,   5.58,  99.90,   5.30,  -1.48,
04/13 17Z,   1.20,   6.99,  99.90,   6.71,  -1.48,
04/13 18Z,   1.30,   8.08,  99.90,   7.90,  -1.48,
04/13 19Z,   1.10,   8.52,  99.90,   8.14,  -1.48,  (max)
04/13 20Z,   1.40,   8.18,  99.90,   8.11,  -1.48,
04/13 21Z,   1.40,   7.10,  99.90,   7.02,  -1.48,
04/13 22Z,   1.30,   5.44,  99.90,   5.27,  -1.48,
04/13 23Z,   1.20,   3.56,  99.90,   3.28,  -1.48,
04/14 00Z,   1.20,   1.94,  99.90,   1.66,  -1.48,
04/14 01Z,   1.20,   0.99,  99.90,   0.71,  -1.48,
04/14 02Z,   1.10,   0.94,  99.90,   0.56,  -1.48,  (min)
04/14 03Z,   1.00,   1.79,  99.90,   1.32,  -1.48,
04/14 04Z,   1.30,   3.40,  99.90,   3.22,  -1.48,
04/14 05Z,   1.10,   5.39,  99.90,   5.02,  -1.48,
04/14 06Z,   1.00,   7.28,  99.90,   6.81,  -1.48,
04/14 07Z,  99.90,   8.58,  99.90,  99.90,  -1.48,
04/14 08Z,  99.90,   9.01,  99.90,  99.90,  -1.48,
04/14 09Z,  99.90,   8.52,  99.90,  99.90,  -1.48,
04/14 10Z,  99.90,   7.22,  99.90,  99.90,  -1.48,
04/14 11Z,  99.90,   5.42,  99.90,  99.90,  -1.48,
04/14 12Z,  99.90,   3.61,  99.90,  99.90,  -1.48,