EXTRA-TROPICAL  STORM  SURGE
N A T I O N A L    O C E A N I C    A N D    A T M O S P H E R I C    A D M I N I S T R A T I O N

  • This website is considered EXPERIMENTAL, is supported on an 8x5 basis, and has no guarantee of availability.
  • The data located HERE are considered OPERATIONAL and are supported on a 24x7 basis.
About
Manual
Disclaimer
Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
Mid-Atlantic
Southeast
Gulf
Northwest
Alaska
Gulf of Alaska
Status
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
#Seward, AK : 04/14/2026 02:21:08 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/12 06Z,   0.80,   7.05,   6.45,  99.90,  -1.40,
04/12 07Z,   0.80,   7.25,   6.64,  99.90,  -1.41,  (max)
04/12 08Z,   0.80,   6.95,   6.47,  99.90,  -1.28,
04/12 09Z,   0.90,   6.27,   5.72,  99.90,  -1.45,
04/12 10Z,   0.90,   5.43,   5.00,  99.90,  -1.33,
04/12 11Z,   1.00,   4.74,   4.34,  99.90,  -1.40,
04/12 12Z,   0.90,   4.43,   4.01,  99.90,  -1.32,  (min)
04/12 13Z,   0.90,   4.56,   4.07,  99.90,  -1.39,
04/12 14Z,   1.00,   5.11,   4.68,  99.90,  -1.43,
04/12 15Z,   1.00,   5.98,   5.42,  99.90,  -1.56,
04/12 16Z,   1.00,   6.95,   6.45,  99.90,  -1.50,
04/12 17Z,   1.00,   7.72,   7.23,  99.90,  -1.49,
04/12 18Z,   0.90,   8.01,   7.55,  99.90,  -1.36,  (max)
04/12 19Z,   1.00,   7.70,   7.18,  99.90,  -1.52,
04/12 20Z,   1.00,   6.83,   6.36,  99.90,  -1.47,
04/12 21Z,   1.10,   5.48,   5.04,  99.90,  -1.54,
04/12 22Z,   1.00,   3.90,   3.50,  99.90,  -1.40,
04/12 23Z,   1.20,   2.46,   2.08,  99.90,  -1.58,
04/13 00Z,   1.00,   1.52,   1.16,  99.90,  -1.36,
04/13 01Z,   1.10,   1.26,   0.78,  99.90,  -1.58,  (min)
04/13 02Z,   1.10,   1.73,   1.32,  99.90,  -1.51,
04/13 03Z,   1.10,   2.85,   2.43,  99.90,  -1.52,
04/13 04Z,   1.20,   4.41,   3.99,  99.90,  -1.62,
04/13 05Z,   1.20,   6.03,   5.61,  99.90,  -1.62,
04/13 06Z,   1.10,   7.32,   6.93,  99.90,  -1.49,
04/13 07Z,   1.20,   8.00,   7.64,  99.90,  -1.56,
04/13 08Z,   1.20,   7.97,   7.65,  99.90,  -1.52,  (max)
04/13 09Z,   1.20,   7.28,   7.00,  99.90,  -1.48,
04/13 10Z,   1.20,   6.10,   5.82,  99.90,  -1.48,
04/13 11Z,   1.20,   4.77,   4.50,  99.90,  -1.47,
04/13 12Z,   1.20,   3.73,   3.45,  99.90,  -1.48,
04/13 13Z,   1.20,   3.25,   2.94,  99.90,  -1.51,  (min)
04/13 14Z,   1.20,   3.45,   3.07,  99.90,  -1.58,
04/13 15Z,   1.20,   4.29,   3.90,  99.90,  -1.59,
04/13 16Z,   1.20,   5.58,   5.13,  99.90,  -1.65,
04/13 17Z,   1.20,   6.99,   6.45,  99.90,  -1.74,
04/13 18Z,   1.20,   8.08,   7.58,  99.90,  -1.70,
04/13 19Z,   1.20,   8.52,   8.06,  99.90,  -1.66,  (max)
04/13 20Z,   1.30,   8.18,   7.75,  99.90,  -1.73,
04/13 21Z,   1.30,   7.10,   6.59,  99.90,  -1.81,
04/13 22Z,   1.30,   5.44,   4.97,  99.90,  -1.77,
04/13 23Z,   1.30,   3.56,   3.01,  99.90,  -1.85,
04/14 00Z,   1.30,   1.94,   1.39,  99.90,  -1.85,
04/14 01Z,   1.20,   0.99,   0.27,  99.90,  -1.92,
04/14 02Z,   1.20,   0.94,   0.24,  99.90,  -1.90,  (min)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/14 03Z,   1.10,   1.79,  99.90,   1.03,  -1.87,
04/14 04Z,   1.10,   3.40,  99.90,   2.66,  -1.83,
04/14 05Z,   1.10,   5.39,  99.90,   4.69,  -1.80,
04/14 06Z,   1.10,   7.28,  99.90,   6.61,  -1.77,
04/14 07Z,   1.10,   8.58,  99.90,   7.94,  -1.74,
04/14 08Z,   1.10,   9.01,  99.90,   8.40,  -1.71,  (max)
04/14 09Z,   1.10,   8.52,  99.90,   7.94,  -1.68,
04/14 10Z,   1.20,   7.22,  99.90,   6.77,  -1.64,
04/14 11Z,   1.20,   5.42,  99.90,   5.01,  -1.61,
04/14 12Z,   1.10,   3.61,  99.90,   3.13,  -1.58,
04/14 13Z,   1.10,   2.32,  99.90,   1.87,  -1.55,
04/14 14Z,   1.00,   1.88,  99.90,   1.37,  -1.52,  (min)
04/14 15Z,   0.90,   2.38,  99.90,   1.76,  -1.52,
04/14 16Z,   0.90,   3.69,  99.90,   3.08,  -1.52,
04/14 17Z,   0.80,   5.51,  99.90,   4.80,  -1.52,
04/14 18Z,   0.80,   7.35,  99.90,   6.63,  -1.52,
04/14 19Z,   0.90,   8.67,  99.90,   8.05,  -1.52,
04/14 20Z,   0.90,   9.11,  99.90,   8.50,  -1.52,  (max)
04/14 21Z,   1.00,   8.58,  99.90,   8.06,  -1.52,
04/14 22Z,   0.80,   7.17,  99.90,   6.45,  -1.52,
04/14 23Z,   1.00,   5.15,  99.90,   4.63,  -1.52,
04/15 00Z,   1.00,   3.01,  99.90,   2.50,  -1.52,
04/15 01Z,   1.20,   1.34,  99.90,   1.03,  -1.52,
04/15 02Z,   0.90,   0.59,  99.90,  -0.02,  -1.52,  (min)
04/15 03Z,   0.70,   0.96,  99.90,   0.14,  -1.52,
04/15 04Z,   1.10,   2.35,  99.90,   1.94,  -1.52,
04/15 05Z,   1.10,   4.49,  99.90,   4.07,  -1.52,
04/15 06Z,   0.90,   6.85,  99.90,   6.23,  -1.52,
04/15 07Z,   0.90,   8.82,  99.90,   8.20,  -1.52,
04/15 08Z,   1.10,   9.89,  99.90,   9.47,  -1.52,  (max)
04/15 09Z,   1.10,   9.83,  99.90,   9.41,  -1.52,
04/15 10Z,   0.90,   8.67,  99.90,   8.05,  -1.52,
04/15 11Z,   0.90,   6.66,  99.90,   6.04,  -1.52,
04/15 12Z,   1.10,   4.25,  99.90,   3.83,  -1.52,
04/15 13Z,   1.00,   2.08,  99.90,   1.57,  -1.52,
04/15 14Z,   0.90,   0.75,  99.90,   0.13,  -1.52,
04/15 15Z,   0.90,   0.56,  99.90,  -0.05,  -1.52,  (min)
04/15 16Z,   0.90,   1.55,  99.90,   0.93,  -1.52,
04/15 17Z,   0.90,   3.44,  99.90,   2.83,  -1.52,
04/15 18Z,   0.90,   5.78,  99.90,   5.17,  -1.52,
04/15 19Z,   0.90,   7.94,  99.90,   7.33,  -1.52,
04/15 20Z,   0.90,   9.33,  99.90,   8.71,  -1.52,
04/15 21Z,   0.90,   9.61,  99.90,   9.00,  -1.52,  (max)
04/15 22Z,   0.90,   8.76,  99.90,   8.14,  -1.52,
04/15 23Z,   1.00,   6.97,  99.90,   6.45,  -1.52,
04/16 00Z,   1.00,   4.65,  99.90,   4.13,  -1.52,
04/16 01Z,   0.90,   2.40,  99.90,   1.78,  -1.52,
04/16 02Z,   0.80,   0.88,  99.90,   0.16,  -1.52,
04/16 03Z,   0.80,   0.53,  99.90,  -0.19,  -1.52,  (min)
04/16 04Z,   0.80,   1.45,  99.90,   0.73,  -1.52,
04/16 05Z,   0.80,   3.43,  99.90,   2.71,  -1.52,
04/16 06Z,   0.70,   6.01,  99.90,   5.20,  -1.52,
04/16 07Z,   0.60,   8.55,  99.90,   7.64,  -1.52,
04/16 08Z,   0.70,  10.36,  99.90,   9.55,  -1.52,
04/16 09Z,   0.70,  10.97,  99.90,  10.16,  -1.52,  (max)
04/16 10Z,   0.80,  10.24,  99.90,   9.53,  -1.52,
04/16 11Z,   0.60,   8.34,  99.90,   7.42,  -1.52,
04/16 12Z,   0.70,   5.64,  99.90,   4.82,  -1.52,
04/16 13Z,   0.60,   2.76,  99.90,   1.84,  -1.52,
04/16 14Z,   0.60,   0.44,  99.90,  -0.48,  -1.52,
04/16 15Z,   0.60,  -0.72,  99.90,  -1.64,  -1.52,  (min)
04/16 16Z,   0.60,  -0.46,  99.90,  -1.38,  -1.52,
04/16 17Z,   0.70,   1.10,  99.90,   0.28,  -1.52,
04/16 18Z,   0.60,   3.56,  99.90,   2.64,  -1.52,
04/16 19Z,   0.70,   6.29,  99.90,   5.48,  -1.52,
04/16 20Z,   0.60,   8.59,  99.90,   7.67,  -1.52,
04/16 21Z,   0.60,   9.87,  99.90,   8.95,  -1.52,  (max)
04/16 22Z,   0.60,   9.86,  99.90,   8.95,  -1.52,
04/16 23Z,   0.70,   8.65,  99.90,   7.83,  -1.52,
04/17 00Z,   0.60,   6.54,  99.90,   5.62,  -1.52,
04/17 01Z,   0.60,   4.05,  99.90,   3.13,  -1.52,
04/17 02Z,   0.50,   1.88,  99.90,   0.86,  -1.52,
04/17 03Z,   0.60,   0.70,  99.90,  -0.21,  -1.52,  (min)
04/17 04Z,   0.70,   0.89,  99.90,   0.07,  -1.52,
04/17 05Z,   0.70,   2.41,  99.90,   1.59,  -1.52,
04/17 06Z,   0.70,   4.89,  99.90,   4.07,  -1.52,
04/17 07Z,   0.80,   7.73,  99.90,   7.02,  -1.52,
04/17 08Z,   0.80,  10.21,  99.90,   9.49,  -1.52,
04/17 09Z,   0.80,  11.63,  99.90,  10.91,  -1.52,  (max)
04/17 10Z,   0.80,  11.62,  99.90,  10.90,  -1.52,
04/17 11Z,   0.80,  10.16,  99.90,   9.45,  -1.52,
04/17 12Z,   0.80,   7.56,  99.90,   6.85,  -1.52,
04/17 13Z,   0.80,   4.34,  99.90,   3.62,  -1.52,
04/17 14Z,   0.70,   1.21,  99.90,   0.39,  -1.52,
04/17 15Z,   0.70,  -1.03,  99.90,  -1.85,  -1.52,
04/17 16Z,   0.70,  -1.82,  99.90,  -2.64,  -1.52,  (min)
04/17 17Z,   0.80,  -1.04,  99.90,  -1.75,  -1.52,
04/17 18Z,   0.80,   1.07,  99.90,   0.35,  -1.52,