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 : 07/22/2026 13:22:02 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/20 18Z,   0.70,   3.39,   3.15,  99.90,  -0.94,
07/20 19Z,   0.70,   1.90,   1.66,  99.90,  -0.94,
07/20 20Z,   0.70,   1.21,   1.07,  99.90,  -0.84,  (min)
07/20 21Z,   0.70,   1.52,   1.42,  99.90,  -0.80,
07/20 22Z,   0.60,   2.74,   2.54,  99.90,  -0.80,
07/20 23Z,   0.60,   4.57,   4.37,  99.90,  -0.80,
07/21 00Z,   0.70,   6.62,   6.28,  99.90,  -1.04,
07/21 01Z,   0.70,   8.43,   8.07,  99.90,  -1.06,
07/21 02Z,   0.70,   9.58,   9.03,  99.90,  -1.25,
07/21 03Z,   0.70,   9.83,   9.29,  99.90,  -1.24,  (max)
07/21 04Z,   0.70,   9.18,   8.53,  99.90,  -1.35,
07/21 05Z,   0.60,   7.78,   7.21,  99.90,  -1.17,
07/21 06Z,   0.60,   5.90,   5.40,  99.90,  -1.10,
07/21 07Z,   0.70,   3.98,   3.52,  99.90,  -1.16,
07/21 08Z,   0.70,   2.50,   1.90,  99.90,  -1.30,
07/21 09Z,   0.60,   1.81,   1.28,  99.90,  -1.13,  (min)
07/21 10Z,   0.60,   1.96,   1.54,  99.90,  -1.02,
07/21 11Z,   0.60,   2.81,   2.28,  99.90,  -1.13,
07/21 12Z,   0.60,   4.10,   3.51,  99.90,  -1.19,
07/21 13Z,   0.50,   5.48,   4.87,  99.90,  -1.11,
07/21 14Z,   0.50,   6.56,   5.86,  99.90,  -1.20,
07/21 15Z,   0.50,   7.06,   6.31,  99.90,  -1.25,  (max)
07/21 16Z,   0.50,   6.89,   6.16,  99.90,  -1.23,
07/21 17Z,   0.50,   6.14,   5.48,  99.90,  -1.16,
07/21 18Z,   0.60,   4.98,   4.36,  99.90,  -1.22,
07/21 19Z,   0.60,   3.72,   3.15,  99.90,  -1.17,
07/21 20Z,   0.60,   2.77,  99.90,  99.90,  99.90,
07/21 21Z,   0.60,   2.48,  99.90,  99.90,  99.90,
07/21 22Z,   0.50,   2.96,  99.90,  99.90,  99.90,
07/21 23Z,   0.60,   4.10,  99.90,  99.90,  99.90,  (min)
07/22 00Z,   0.60,   5.64,   5.14,  99.90,  -1.10,
07/22 01Z,   0.60,   7.30,   6.67,  99.90,  -1.23,
07/22 02Z,   0.60,   8.69,   7.94,  99.90,  -1.35,
07/22 03Z,   0.60,   9.47,   8.82,  99.90,  -1.25,  (max)
07/22 04Z,   0.60,   9.49,   8.76,  99.90,  -1.33,
07/22 05Z,   0.50,   8.76,   8.05,  99.90,  -1.21,
07/22 06Z,   0.60,   7.42,   6.89,  99.90,  -1.13,
07/22 07Z,   0.60,   5.70,   5.13,  99.90,  -1.17,
07/22 08Z,   0.60,   3.97,   3.40,  99.90,  -1.17,
07/22 09Z,   0.60,   2.64,   2.18,  99.90,  -1.06,
07/22 10Z,   0.60,   1.96,   1.38,  99.90,  -1.18,  (min)
07/22 11Z,   0.60,   1.97,   1.39,  99.90,  -1.18,
07/22 12Z,   0.50,   2.57,   1.98,  99.90,  -1.09,
07/22 13Z,   0.50,   3.59,   2.92,  99.90,  -1.17,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/22 14Z,   0.50,   4.74,  99.90,   4.08,  -1.16,
07/22 15Z,   0.50,   5.71,  99.90,   5.06,  -1.15,
07/22 16Z,   0.50,   6.25,  99.90,   5.61,  -1.14,
07/22 17Z,   0.60,   6.29,  99.90,   5.77,  -1.13,  (max)
07/22 18Z,   0.50,   5.89,  99.90,   5.27,  -1.12,
07/22 19Z,   0.60,   5.15,  99.90,   4.65,  -1.10,
07/22 20Z,   0.60,   4.33,  99.90,   3.83,  -1.09,
07/22 21Z,   0.60,   3.73,  99.90,   3.25,  -1.08,
07/22 22Z,   0.60,   3.64,  99.90,   3.16,  -1.07,  (min)
07/22 23Z,   0.60,   4.11,  99.90,   3.64,  -1.06,
07/23 00Z,   0.60,   5.05,  99.90,   4.59,  -1.05,
07/23 01Z,   0.60,   6.30,  99.90,   5.85,  -1.04,
07/23 02Z,   0.50,   7.62,  99.90,   7.08,  -1.04,
07/23 03Z,   0.50,   8.71,  99.90,   8.17,  -1.04,
07/23 04Z,   0.50,   9.28,  99.90,   8.74,  -1.04,
07/23 05Z,   0.60,   9.21,  99.90,   8.76,  -1.04,  (max)
07/23 06Z,   0.50,   8.49,  99.90,   7.95,  -1.04,
07/23 07Z,   0.60,   7.24,  99.90,   6.80,  -1.04,
07/23 08Z,   0.40,   5.64,  99.90,   5.00,  -1.04,
07/23 09Z,   0.80,   4.00,  99.90,   3.76,  -1.04,
07/23 10Z,   0.70,   2.69,  99.90,   2.35,  -1.04,
07/23 11Z,   0.60,   1.93,  99.90,   1.49,  -1.04,
07/23 12Z,   0.60,   1.77,  99.90,   1.33,  -1.04,  (min)
07/23 13Z,   0.80,   2.18,  99.90,   1.94,  -1.04,
07/23 14Z,   0.80,   3.04,  99.90,   2.80,  -1.04,
07/23 15Z,   0.70,   4.13,  99.90,   3.78,  -1.04,
07/23 16Z,   0.80,   5.13,  99.90,   4.89,  -1.04,
07/23 17Z,   0.80,   5.83,  99.90,   5.59,  -1.04,
07/23 18Z,   0.90,   6.13,  99.90,   5.99,  -1.04,  (max)
07/23 19Z,   0.90,   6.03,  99.90,   5.89,  -1.04,
07/23 20Z,   1.00,   5.60,  99.90,   5.56,  -1.04,
07/23 21Z,   1.00,   5.02,  99.90,   4.98,  -1.04,
07/23 22Z,   1.00,   4.56,  99.90,   4.52,  -1.04,  (min)
07/23 23Z,   1.10,   4.47,  99.90,   4.53,  -1.04,
07/24 00Z,   1.10,   4.81,  99.90,   4.87,  -1.04,
07/24 01Z,   1.10,   5.55,  99.90,   5.60,  -1.04,
07/24 02Z,   1.00,   6.58,  99.90,   6.53,  -1.04,
07/24 03Z,   1.00,   7.72,  99.90,   7.67,  -1.04,
07/24 04Z,   1.00,   8.67,  99.90,   8.63,  -1.04,
07/24 05Z,   0.90,   9.18,  99.90,   9.03,  -1.04,  (max)
07/24 06Z,   0.90,   9.09,  99.90,   8.95,  -1.04,
07/24 07Z,   1.00,   8.42,  99.90,   8.38,  -1.04,
07/24 08Z,   1.10,   7.20,  99.90,   7.26,  -1.04,
07/24 09Z,   1.00,   5.61,  99.90,   5.57,  -1.04,
07/24 10Z,   0.90,   3.94,  99.90,   3.80,  -1.04,
07/24 11Z,   0.90,   2.54,  99.90,   2.40,  -1.04,
07/24 12Z,   0.90,   1.65,  99.90,   1.51,  -1.04,
07/24 13Z,   0.90,   1.36,  99.90,   1.22,  -1.04,  (min)
07/24 14Z,   0.70,   1.70,  99.90,   1.36,  -1.04,
07/24 15Z,   0.90,   2.58,  99.90,   2.44,  -1.04,
07/24 16Z,   0.90,   3.76,  99.90,   3.62,  -1.04,
07/24 17Z,   0.90,   4.93,  99.90,   4.79,  -1.04,
07/24 18Z,   0.90,   5.84,  99.90,   5.70,  -1.04,
07/24 19Z,   1.00,   6.36,  99.90,   6.31,  -1.04,
07/24 20Z,   1.00,   6.44,  99.90,   6.40,  -1.04,  (max)
07/24 21Z,   1.00,   6.12,  99.90,   6.08,  -1.04,
07/24 22Z,   0.90,   5.57,  99.90,   5.43,  -1.04,
07/24 23Z,   0.90,   5.07,  99.90,   4.93,  -1.04,
07/25 00Z,   0.90,   4.86,  99.90,   4.72,  -1.04,  (min)
07/25 01Z,   0.90,   5.06,  99.90,   4.92,  -1.04,
07/25 02Z,   0.80,   5.67,  99.90,   5.43,  -1.04,
07/25 03Z,   0.90,   6.64,  99.90,   6.49,  -1.04,
07/25 04Z,   0.90,   7.76,  99.90,   7.62,  -1.04,
07/25 05Z,   0.90,   8.73,  99.90,   8.59,  -1.04,
07/25 06Z,   0.90,   9.26,  99.90,   9.12,  -1.04,  (max)
07/25 07Z,   0.90,   9.19,  99.90,   9.05,  -1.04,
07/25 08Z,   1.00,   8.49,  99.90,   8.45,  -1.04,
07/25 09Z,   0.90,   7.20,  99.90,   7.05,  -1.04,
07/25 10Z,   0.90,   5.47,  99.90,   5.33,  -1.04,
07/25 11Z,   0.90,   3.66,  99.90,   3.51,  -1.04,
07/25 12Z,   0.80,   2.12,  99.90,   1.87,  -1.04,
07/25 13Z,   0.80,   1.12,  99.90,   0.88,  -1.04,
07/25 14Z,   0.70,   0.83,  99.90,   0.48,  -1.04,  (min)
07/25 15Z,   0.70,   1.26,  99.90,   0.92,  -1.04,
07/25 16Z,   0.80,   2.33,  99.90,   2.09,  -1.04,
07/25 17Z,   0.90,   3.75,  99.90,   3.61,  -1.04,
07/25 18Z,   0.80,   5.14,  99.90,   4.90,  -1.04,
07/25 19Z,   0.90,   6.22,  99.90,   6.08,  -1.04,
07/25 20Z,   1.00,   6.84,  99.90,   6.80,  -1.04,
07/25 21Z,   1.10,   6.92,  99.90,   6.98,  -1.04,  (max)
07/25 22Z,   1.00,   6.51,  99.90,   6.47,  -1.04,
07/25 23Z,   1.00,   5.81,  99.90,   5.77,  -1.04,
07/26 00Z,   1.00,   5.15,  99.90,   5.11,  -1.04,
07/26 01Z,   1.00,   4.82,  99.90,   4.78,  -1.04,  (min)
07/26 02Z,   1.00,   4.95,  99.90,   4.91,  -1.04,
07/26 03Z,   0.90,   5.59,  99.90,   5.45,  -1.04,
07/26 04Z,   1.00,   6.67,  99.90,   6.63,  -1.04,
07/26 05Z,   1.00,   7.93,  99.90,   7.88,  -1.04,
07/26 06Z,   1.00,   9.00,  99.90,   8.96,  -1.04,