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
#Seldovia, AK : 04/20/2026 16:22:48 GMT (units in feet MHHW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/19 00Z,   0.00,   1.45,   0.78,  99.90,  -0.67,
04/19 01Z,   0.00,   0.71,   0.11,  99.90,  -0.60,  (max)
04/19 02Z,   0.00,  -2.48,  -3.07,  99.90,  -0.59,
04/19 03Z,  -0.10,  -7.26,  -7.96,  99.90,  -0.60,
04/19 04Z,  -0.20, -12.35, -13.01,  99.90,  -0.46,
04/19 05Z,  -0.20, -16.29, -16.99,  99.90,  -0.50,
04/19 06Z,   0.00, -17.76, -18.37,  99.90,  -0.61,  (min)
04/19 07Z,   0.00, -16.16, -16.31,  99.90,  -0.15,
04/19 08Z,   0.00, -12.09, -12.07,  99.90,   0.02,
04/19 09Z,   0.10,  -6.82,  -6.88,  99.90,  -0.16,
04/19 10Z,   0.10,  -1.69,  -1.86,  99.90,  -0.27,
04/19 11Z,   0.20,   2.11,   1.95,  99.90,  -0.36,
04/19 12Z,   0.20,   3.58,   3.39,  99.90,  -0.39,  (max)
04/19 13Z,   0.20,   2.26,   1.90,  99.90,  -0.56,
04/19 14Z,   0.10,  -1.64,  -2.05,  99.90,  -0.51,
04/19 15Z,   0.00,  -7.37,  -7.65,  99.90,  -0.28,
04/19 16Z,   0.00, -13.70, -13.89,  99.90,  -0.19,
04/19 17Z,   0.10, -19.19, -19.51,  99.90,  -0.42,
04/19 18Z,   0.20, -22.47, -22.68,  99.90,  -0.41,  (min)
04/19 19Z,   0.20, -22.59, -22.65,  99.90,  -0.26,
04/19 20Z,   0.30, -19.68, -19.92,  99.90,  -0.54,
04/19 21Z,   0.30, -14.77, -15.30,  99.90,  -0.83,
04/19 22Z,   0.20,  -9.14,  -9.53,  99.90,  -0.59,
04/19 23Z,   0.20,  -3.95,  -4.20,  99.90,  -0.45,
04/20 00Z,   0.10,  -0.34,  -0.83,  99.90,  -0.59,
04/20 01Z,   0.10,   0.92,   0.30,  99.90,  -0.72,  (max)
04/20 02Z,   0.10,  -0.38,  -0.83,  99.90,  -0.55,
04/20 03Z,   0.00,  -3.84,  -4.35,  99.90,  -0.51,
04/20 04Z,   0.00,  -8.49,  -9.01,  99.90,  -0.52,
04/20 05Z,   0.00, -13.03, -13.40,  99.90,  -0.37,
04/20 06Z,   0.00, -16.10, -16.40,  99.90,  -0.30,
04/20 07Z,   0.00, -16.60, -16.79,  99.90,  -0.19,  (min)
04/20 08Z,   0.00, -14.27, -14.21,  99.90,   0.06,
04/20 09Z,   0.10,  -9.95, -10.00,  99.90,  -0.15,
04/20 10Z,   0.30,  -4.96,  -5.28,  99.90,  -0.62,
04/20 11Z,   0.30,  -0.49,  -0.89,  99.90,  -0.70,
04/20 12Z,   0.20,   2.41,   2.04,  99.90,  -0.57,
04/20 13Z,   0.10,   2.94,   2.47,  99.90,  -0.57,  (max)
04/20 14Z,   0.10,   0.86,   0.22,  99.90,  -0.74,
04/20 15Z,   0.10,  -3.49,  -4.07,  99.90,  -0.68,
04/20 16Z,   0.10,  -9.21,  -9.50,  99.90,  -0.39,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 17Z,   0.00, -15.07,  99.90, -15.46,  -0.39,
04/20 18Z,   0.00, -19.76,  99.90, -20.15,  -0.39,
04/20 19Z,   0.00, -22.10,  99.90, -22.49,  -0.39,  (min)
04/20 20Z,  -0.10, -21.46,  99.90, -21.95,  -0.39,
04/20 21Z,  -0.10, -18.22,  99.90, -18.71,  -0.39,
04/20 22Z,   0.00, -13.49,  99.90, -13.88,  -0.39,
04/20 23Z,   0.00,  -8.36,  99.90,  -8.76,  -0.39,
04/21 00Z,   0.00,  -3.87,  99.90,  -4.26,  -0.39,
04/21 01Z,   0.20,  -0.96,  99.90,  -1.15,  -0.39,
04/21 02Z,   0.20,  -0.25,  99.90,  -0.44,  -0.39,  (max)
04/21 03Z,   0.10,  -1.80,  99.90,  -2.09,  -0.39,
04/21 04Z,   0.00,  -5.13,  99.90,  -5.52,  -0.39,
04/21 05Z,   0.00,  -9.26,  99.90,  -9.65,  -0.39,
04/21 06Z,  -0.10, -13.00,  99.90, -13.49,  -0.39,
04/21 07Z,  -0.20, -15.19,  99.90, -15.78,  -0.39,  (min)
04/21 08Z,  -0.20, -14.98,  99.90, -15.57,  -0.39,
04/21 09Z,  -0.20, -12.38,  99.90, -12.98,  -0.39,
04/21 10Z,  -0.10,  -8.33,  99.90,  -8.83,  -0.39,
04/21 11Z,   0.00,  -4.00,  99.90,  -4.40,  -0.39,
04/21 12Z,   0.00,  -0.38,  99.90,  -0.77,  -0.39,
04/21 13Z,   0.10,   1.67,  99.90,   1.38,  -0.39,  (max)
04/21 14Z,   0.10,   1.53,  99.90,   1.24,  -0.39,
04/21 15Z,   0.00,  -0.89,  99.90,  -1.29,  -0.39,
04/21 16Z,   0.00,  -5.15,  99.90,  -5.54,  -0.39,
04/21 17Z,  -0.10, -10.36,  99.90, -10.86,  -0.39,
04/21 18Z,  -0.20, -15.41,  99.90, -16.00,  -0.39,
04/21 19Z,  -0.20, -19.20,  99.90, -19.79,  -0.39,
04/21 20Z,  -0.20, -20.80,  99.90, -21.39,  -0.39,  (min)
04/21 21Z,  -0.20, -19.81,  99.90, -20.40,  -0.39,
04/21 22Z,  -0.10, -16.75,  99.90, -17.24,  -0.39,
04/21 23Z,  -0.10, -12.59,  99.90, -13.08,  -0.39,
04/22 00Z,   0.00,  -8.23,  99.90,  -8.62,  -0.39,
04/22 01Z,   0.00,  -4.48,  99.90,  -4.87,  -0.39,
04/22 02Z,   0.00,  -2.14,  99.90,  -2.54,  -0.39,
04/22 03Z,   0.00,  -1.70,  99.90,  -2.10,  -0.39,  (max)
04/22 04Z,  -0.10,  -3.15,  99.90,  -3.64,  -0.39,
04/22 05Z,  -0.10,  -5.99,  99.90,  -6.48,  -0.39,
04/22 06Z,  -0.10,  -9.36,  99.90,  -9.86,  -0.39,
04/22 07Z,   0.00, -12.29,  99.90, -12.68,  -0.39,
04/22 08Z,   0.00, -13.83,  99.90, -14.22,  -0.39,  (min)
04/22 09Z,   0.00, -13.34,  99.90, -13.73,  -0.39,
04/22 10Z,   0.00, -10.96,  99.90, -11.36,  -0.39,
04/22 11Z,   0.00,  -7.57,  99.90,  -7.97,  -0.39,
04/22 12Z,  -0.10,  -4.09,  99.90,  -4.58,  -0.39,
04/22 13Z,  -0.20,  -1.28,  99.90,  -1.87,  -0.39,
04/22 14Z,  -0.30,   0.16,  99.90,  -0.54,  -0.39,  (max)
04/22 15Z,  -0.30,  -0.26,  99.90,  -0.96,  -0.39,
04/22 16Z,  -0.30,  -2.54,  99.90,  -3.24,  -0.39,
04/22 17Z,  -0.30,  -6.26,  99.90,  -6.95,  -0.39,
04/22 18Z,  -0.30, -10.64,  99.90, -11.33,  -0.39,
04/22 19Z,  -0.10, -14.78,  99.90, -15.27,  -0.39,
04/22 20Z,   0.00, -17.83,  99.90, -18.22,  -0.39,
04/22 21Z,   0.00, -19.04,  99.90, -19.43,  -0.39,  (min)
04/22 22Z,  -0.10, -18.15,  99.90, -18.64,  -0.39,
04/22 23Z,  -0.10, -15.63,  99.90, -16.13,  -0.39,
04/23 00Z,  -0.10, -12.26,  99.90, -12.76,  -0.39,
04/23 01Z,  -0.20,  -8.67,  99.90,  -9.26,  -0.39,
04/23 02Z,  -0.20,  -5.52,  99.90,  -6.11,  -0.39,
04/23 03Z,  -0.30,  -3.49,  99.90,  -4.18,  -0.39,
04/23 04Z,  -0.40,  -2.99,  99.90,  -3.78,  -0.39,  (max)
04/23 05Z,  -0.40,  -4.02,  99.90,  -4.81,  -0.39,
04/23 06Z,  -0.40,  -6.19,  99.90,  -6.98,  -0.39,
04/23 07Z,  -0.40,  -8.82,  99.90,  -9.61,  -0.39,
04/23 08Z,  -0.30, -11.16,  99.90, -11.86,  -0.39,
04/23 09Z,  -0.30, -12.44,  99.90, -13.14,  -0.39,  (min)
04/23 10Z,  -0.20, -12.12,  99.90, -12.72,  -0.39,
04/23 11Z,  -0.10, -10.35,  99.90, -10.84,  -0.39,
04/23 12Z,  -0.20,  -7.80,  99.90,  -8.39,  -0.39,
04/23 13Z,  -0.20,  -5.13,  99.90,  -5.72,  -0.39,
04/23 14Z,  -0.30,  -2.90,  99.90,  -3.59,  -0.39,
04/23 15Z,  -0.50,  -1.71,  99.90,  -2.61,  -0.39,  (max)
04/23 16Z,  -0.70,  -1.98,  99.90,  -3.07,  -0.39,
04/23 17Z,  -0.70,  -3.72,  99.90,  -4.82,  -0.39,
04/23 18Z,  -0.60,  -6.62,  99.90,  -7.62,  -0.39,
04/23 19Z,  -0.50, -10.10,  99.90, -10.99,  -0.39,
04/23 20Z,  -0.50, -13.49,  99.90, -14.39,  -0.39,
04/23 21Z,  -0.30, -16.13,  99.90, -16.82,  -0.39,
04/23 22Z,  -0.30, -17.34,  99.90, -18.03,  -0.39,  (min)
04/23 23Z,  -0.30, -16.87,  99.90, -17.56,  -0.39,
04/24 00Z,  -0.20, -15.07,  99.90, -15.66,  -0.39,
04/24 01Z,  -0.20, -12.45,  99.90, -13.05,  -0.39,
04/24 02Z,  -0.20,  -9.43,  99.90, -10.03,  -0.39,
04/24 03Z,  -0.20,  -6.58,  99.90,  -7.18,  -0.39,
04/24 04Z,  -0.20,  -4.54,  99.90,  -5.14,  -0.39,
04/24 05Z,  -0.10,  -3.72,  99.90,  -4.21,  -0.39,  (max)
04/24 06Z,  -0.10,  -4.20,  99.90,  -4.69,  -0.39,
04/24 07Z,  99.90,  -5.74,  99.90,  99.90,  -0.39,
04/24 08Z,  99.90,  -7.87,  99.90,  99.90,  -0.39,
04/24 09Z,  99.90, -10.01,  99.90,  99.90,  -0.39,
04/24 10Z,  99.90, -11.46,  99.90,  99.90,  -0.39,
04/24 11Z,  99.90, -11.67,  99.90,  99.90,  -0.39,
04/24 12Z,  99.90, -10.67,  99.90,  99.90,  -0.39,