EXTRA-TROPICAL  STORM  SURGE
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Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
Mid-Atlantic
Southeast
Gulf
Northwest
Alaska
Gulf of Alaska
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Stations
Ketchikan, AK
Sitka, AK
Juneau, AK
Skagway, AK
Elfin Cove, AK
Yakutat, AK
Cordova, AK
Valdez, AK
Seward, AK
Seldovia, AK
Nikiski, AK
Anchorage, AK
Kodiak Island, AK
Alitak, AK
Sand Point, AK
King Cove, AK
Adak Island, AK
Atka, AK
Unalaska, AK
Surge List
Gulf of Alaska
#Seattle, WA : 01/20/2026 03:22:25 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
01/18 12Z,   0.10,  10.48,  10.24,  99.90,  -0.34,
01/18 13Z,   0.10,  11.63,  11.28,  99.90,  -0.45,
01/18 14Z,   0.10,  12.00,  11.68,  99.90,  -0.42,  (max)
01/18 15Z,   0.10,  11.67,  11.34,  99.90,  -0.43,
01/18 16Z,   0.10,  10.74,  10.62,  99.90,  -0.22,
01/18 17Z,   0.10,   9.52,   9.62,  99.90,  -0.00,
01/18 18Z,   0.00,   8.48,   8.53,  99.90,   0.05,
01/18 19Z,   0.00,   7.97,   7.91,  99.90,  -0.06,  (min)
01/18 20Z,   0.00,   8.04,   8.03,  99.90,  -0.01,
01/18 21Z,   0.00,   8.59,   8.55,  99.90,  -0.04,
01/18 22Z,   0.00,   9.37,   9.29,  99.90,  -0.08,
01/18 23Z,   0.00,  10.03,   9.90,  99.90,  -0.13,
01/19 00Z,   0.10,  10.16,  10.09,  99.90,  -0.17,  (max)
01/19 01Z,   0.10,   9.47,   9.43,  99.90,  -0.14,
01/19 02Z,   0.10,   7.91,   7.87,  99.90,  -0.14,
01/19 03Z,   0.10,   5.67,   5.66,  99.90,  -0.11,
01/19 04Z,   0.10,   3.06,   2.94,  99.90,  -0.22,
01/19 05Z,   0.10,   0.59,   0.34,  99.90,  -0.35,
01/19 06Z,   0.10,  -1.10,  -1.27,  99.90,  -0.27,
01/19 07Z,   0.10,  -1.46,  -1.67,  99.90,  -0.31,  (min)
01/19 08Z,   0.10,  -0.42,  -0.52,  99.90,  -0.20,
01/19 09Z,   0.10,   1.71,   1.52,  99.90,  -0.29,
01/19 10Z,   0.10,   4.46,   4.28,  99.90,  -0.28,
01/19 11Z,   0.10,   7.29,   7.10,  99.90,  -0.29,
01/19 12Z,   0.10,   9.71,   9.43,  99.90,  -0.38,
01/19 13Z,   0.10,  11.34,  10.90,  99.90,  -0.54,
01/19 14Z,   0.10,  12.06,  11.60,  99.90,  -0.56,  (max)
01/19 15Z,   0.10,  11.96,  11.50,  99.90,  -0.56,
01/19 16Z,   0.10,  11.17,  10.89,  99.90,  -0.38,
01/19 17Z,   0.10,   9.92,   9.91,  99.90,  -0.11,
01/19 18Z,   0.00,   8.60,   8.63,  99.90,   0.03,
01/19 19Z,   0.00,   7.70,   7.65,  99.90,  -0.05,
01/19 20Z,   0.00,   7.48,   7.40,  99.90,  -0.08,  (min)
01/19 21Z,   0.00,   7.89,   7.81,  99.90,  -0.08,
01/19 22Z,   0.00,   8.69,   8.59,  99.90,  -0.10,
01/19 23Z,   0.00,   9.57,   9.47,  99.90,  -0.10,
01/20 00Z,   0.00,  10.15,  10.14,  99.90,  -0.01,  (max)
01/20 01Z,   0.00,  10.05,  10.09,  99.90,   0.04,
01/20 02Z,   0.00,   9.04,   9.11,  99.90,   0.07,
01/20 03Z,   0.00,   7.20,   7.28,  99.90,   0.08,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
01/20 04Z,   0.00,   4.77,  99.90,   4.82,   0.05,
01/20 05Z,   0.10,   2.13,  99.90,   2.26,   0.03,
01/20 06Z,   0.10,  -0.13,  99.90,  -0.03,   0.01,
01/20 07Z,   0.10,  -1.36,  99.90,  -1.28,  -0.02,  (min)
01/20 08Z,   0.10,  -1.15,  99.90,  -1.09,  -0.04,
01/20 09Z,   0.10,   0.44,  99.90,   0.48,  -0.07,
01/20 10Z,   0.10,   2.98,  99.90,   2.99,  -0.09,
01/20 11Z,   0.10,   5.90,  99.90,   5.89,  -0.11,
01/20 12Z,   0.10,   8.68,  99.90,   8.64,  -0.14,
01/20 13Z,   0.10,  10.82,  99.90,  10.76,  -0.16,
01/20 14Z,   0.10,  12.01,  99.90,  11.93,  -0.19,
01/20 15Z,   0.20,  12.23,  99.90,  12.22,  -0.21,  (max)
01/20 16Z,   0.20,  11.62,  99.90,  11.61,  -0.21,
01/20 17Z,   0.20,  10.40,  99.90,  10.39,  -0.21,
01/20 18Z,   0.20,   8.88,  99.90,   8.87,  -0.21,
01/20 19Z,   0.20,   7.55,  99.90,   7.54,  -0.21,
01/20 20Z,   0.20,   6.87,  99.90,   6.86,  -0.21,  (min)
01/20 21Z,   0.20,   6.99,  99.90,   6.98,  -0.21,
01/20 22Z,   0.20,   7.72,  99.90,   7.71,  -0.21,
01/20 23Z,   0.10,   8.72,  99.90,   8.61,  -0.21,
01/21 00Z,   0.10,   9.65,  99.90,   9.54,  -0.21,
01/21 01Z,   0.10,  10.11,  99.90,  10.00,  -0.21,  (max)
01/21 02Z,   0.10,   9.76,  99.90,   9.65,  -0.21,
01/21 03Z,   0.10,   8.49,  99.90,   8.38,  -0.21,
01/21 04Z,   0.10,   6.46,  99.90,   6.35,  -0.21,
01/21 05Z,   0.20,   3.98,  99.90,   3.97,  -0.21,
01/21 06Z,   0.10,   1.49,  99.90,   1.38,  -0.21,
01/21 07Z,   0.10,  -0.40,  99.90,  -0.51,  -0.21,
01/21 08Z,   0.10,  -1.08,  99.90,  -1.19,  -0.21,  (min)
01/21 09Z,   0.20,  -0.28,  99.90,  -0.29,  -0.21,
01/21 10Z,   0.10,   1.77,  99.90,   1.66,  -0.21,
01/21 11Z,   0.10,   4.55,  99.90,   4.44,  -0.21,
01/21 12Z,   0.10,   7.48,  99.90,   7.37,  -0.21,
01/21 13Z,   0.10,  10.03,  99.90,   9.92,  -0.21,
01/21 14Z,   0.10,  11.75,  99.90,  11.64,  -0.21,
01/21 15Z,   0.10,  12.42,  99.90,  12.31,  -0.21,  (max)
01/21 16Z,   0.10,  12.08,  99.90,  11.97,  -0.21,
01/21 17Z,   0.20,  10.95,  99.90,  10.94,  -0.21,
01/21 18Z,   0.20,   9.34,  99.90,   9.33,  -0.21,
01/21 19Z,   0.20,   7.65,  99.90,   7.64,  -0.21,
01/21 20Z,   0.20,   6.40,  99.90,   6.39,  -0.21,
01/21 21Z,   0.20,   5.99,  99.90,   5.98,  -0.21,  (min)
01/21 22Z,   0.20,   6.45,  99.90,   6.44,  -0.21,
01/21 23Z,   0.20,   7.45,  99.90,   7.44,  -0.21,
01/22 00Z,   0.20,   8.61,  99.90,   8.60,  -0.21,
01/22 01Z,   0.20,   9.54,  99.90,   9.53,  -0.21,
01/22 02Z,   0.20,   9.87,  99.90,   9.86,  -0.21,  (max)
01/22 03Z,   0.20,   9.34,  99.90,   9.33,  -0.21,
01/22 04Z,   0.20,   7.92,  99.90,   7.91,  -0.21,
01/22 05Z,   0.20,   5.85,  99.90,   5.84,  -0.21,
01/22 06Z,   0.20,   3.49,  99.90,   3.48,  -0.21,
01/22 07Z,   0.20,   1.33,  99.90,   1.32,  -0.21,
01/22 08Z,   0.20,  -0.07,  99.90,  -0.08,  -0.21,
01/22 09Z,   0.20,  -0.17,  99.90,  -0.18,  -0.21,  (min)
01/22 10Z,   0.20,   1.13,  99.90,   1.12,  -0.21,
01/22 11Z,   0.20,   3.49,  99.90,   3.48,  -0.21,
01/22 12Z,   0.20,   6.31,  99.90,   6.30,  -0.21,
01/22 13Z,   0.20,   9.05,  99.90,   9.04,  -0.21,
01/22 14Z,   0.20,  11.20,  99.90,  11.19,  -0.21,
01/22 15Z,   0.20,  12.39,  99.90,  12.38,  -0.21,
01/22 16Z,   0.20,  12.46,  99.90,  12.45,  -0.21,  (max)
01/22 17Z,   0.20,  11.56,  99.90,  11.55,  -0.21,
01/22 18Z,   0.20,   9.97,  99.90,   9.96,  -0.21,
01/22 19Z,   0.20,   8.05,  99.90,   8.04,  -0.21,
01/22 20Z,   0.20,   6.28,  99.90,   6.27,  -0.21,
01/22 21Z,   0.20,   5.18,  99.90,   5.17,  -0.21,
01/22 22Z,   0.20,   5.07,  99.90,   5.06,  -0.21,  (min)
01/22 23Z,   0.20,   5.82,  99.90,   5.81,  -0.21,
01/23 00Z,   0.20,   7.05,  99.90,   7.04,  -0.21,
01/23 01Z,   0.20,   8.32,  99.90,   8.30,  -0.21,
01/23 02Z,   0.10,   9.24,  99.90,   9.13,  -0.21,
01/23 03Z,   0.20,   9.50,  99.90,   9.49,  -0.21,  (max)
01/23 04Z,   0.20,   8.89,  99.90,   8.88,  -0.21,
01/23 05Z,   0.20,   7.47,  99.90,   7.46,  -0.21,
01/23 06Z,   0.20,   5.55,  99.90,   5.54,  -0.21,
01/23 07Z,   0.20,   3.50,  99.90,   3.49,  -0.21,
01/23 08Z,   0.20,   1.79,  99.90,   1.77,  -0.21,
01/23 09Z,   0.20,   0.93,  99.90,   0.92,  -0.21,  (min)
01/23 10Z,   0.20,   1.34,  99.90,   1.33,  -0.21,
01/23 11Z,   0.20,   2.97,  99.90,   2.96,  -0.21,
01/23 12Z,   0.20,   5.40,  99.90,   5.39,  -0.21,
01/23 13Z,   0.20,   8.04,  99.90,   8.03,  -0.21,
01/23 14Z,   0.20,  10.40,  99.90,  10.39,  -0.21,
01/23 15Z,   0.20,  12.03,  99.90,  12.02,  -0.21,
01/23 16Z,   0.20,  12.63,  99.90,  12.62,  -0.21,  (max)
01/23 17Z,   0.20,  12.12,  99.90,  12.11,  -0.21,
01/23 18Z,   0.10,  10.70,  99.90,  10.59,  -0.21,
01/23 19Z,  99.90,   8.73,  99.90,  99.90,  -0.21,
01/23 20Z,  99.90,   6.61,  99.90,  99.90,  -0.21,
01/23 21Z,  99.90,   4.85,  99.90,  99.90,  -0.21,
01/23 22Z,  99.90,   3.94,  99.90,  99.90,  -0.21,
01/23 23Z,  99.90,   4.09,  99.90,  99.90,  -0.21,
01/24 00Z,  99.90,   5.09,  99.90,  99.90,  -0.21,