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 : 05/19/2026 16:21:53 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/18 00Z,   1.10,  -5.03,  -5.40,  99.90,  -1.47,  (max)
05/18 01Z,   0.90,  -6.62,  -6.92,  99.90,  -1.20,
05/18 02Z,   0.80,  -8.67,  -9.00,  99.90,  -1.13,
05/18 03Z,   0.80, -10.51, -10.75,  99.90,  -1.04,
05/18 04Z,   0.70, -11.48, -11.63,  99.90,  -0.85,  (min)
05/18 05Z,   0.70, -11.19, -11.25,  99.90,  -0.76,
05/18 06Z,   0.90,  -9.64,  -9.73,  99.90,  -0.99,
05/18 07Z,   0.90,  -7.21,  -7.34,  99.90,  -1.03,
05/18 08Z,   0.80,  -4.51,  -4.67,  99.90,  -0.96,
05/18 09Z,   0.70,  -2.23,  -2.43,  99.90,  -0.90,
05/18 10Z,   0.60,  -1.03,  -1.39,  99.90,  -0.96,  (max)
05/18 11Z,   0.50,  -1.29,  -1.69,  99.90,  -0.90,
05/18 12Z,   0.70,  -3.02,  -3.45,  99.90,  -1.13,
05/18 13Z,   0.70,  -5.92,  -6.31,  99.90,  -1.09,
05/18 14Z,   0.60,  -9.50,  -9.87,  99.90,  -0.97,
05/18 15Z,   0.50, -13.05, -13.40,  99.90,  -0.85,
05/18 16Z,   0.40, -15.76, -16.04,  99.90,  -0.68,
05/18 17Z,   0.40, -17.03, -17.24,  99.90,  -0.61,  (min)
05/18 18Z,   0.60, -16.64, -16.94,  99.90,  -0.90,
05/18 19Z,   0.60, -14.81, -15.23,  99.90,  -1.02,
05/18 20Z,   0.60, -12.04, -12.54,  99.90,  -1.10,
05/18 21Z,   0.60,  -9.01,  -9.52,  99.90,  -1.11,
05/18 22Z,   0.60,  -6.44,  -7.00,  99.90,  -1.16,
05/18 23Z,   0.60,  -4.88,  -5.49,  99.90,  -1.21,
05/19 00Z,   0.70,  -4.55,  -5.17,  99.90,  -1.32,  (max)
05/19 01Z,   0.70,  -5.35,  -5.92,  99.90,  -1.27,
05/19 02Z,   0.70,  -6.99,  -7.47,  99.90,  -1.18,
05/19 03Z,   0.70,  -8.95,  -9.41,  99.90,  -1.16,
05/19 04Z,   0.60, -10.60, -11.03,  99.90,  -1.03,
05/19 05Z,   0.60, -11.30, -11.70,  99.90,  -1.00,  (min)
05/19 06Z,   0.80, -10.75, -11.01,  99.90,  -1.06,
05/19 07Z,   0.80,  -9.05,  -9.34,  99.90,  -1.09,
05/19 08Z,   0.80,  -6.63,  -6.96,  99.90,  -1.13,
05/19 09Z,   0.80,  -4.09,  -4.43,  99.90,  -1.14,
05/19 10Z,   0.80,  -2.10,  -2.57,  99.90,  -1.27,
05/19 11Z,   0.80,  -1.24,  -1.77,  99.90,  -1.33,  (max)
05/19 12Z,   0.80,  -1.80,  -2.27,  99.90,  -1.27,
05/19 13Z,   0.70,  -3.72,  -4.19,  99.90,  -1.17,
05/19 14Z,   0.70,  -6.67,  -6.99,  99.90,  -1.02,
05/19 15Z,   0.70, -10.15, -10.54,  99.90,  -1.09,
05/19 16Z,   0.70, -13.47, -13.73,  99.90,  -0.96,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/19 17Z,   0.70, -15.85,  99.90, -16.13,  -0.98,
05/19 18Z,   0.70, -16.78,  99.90, -17.07,  -0.99,  (min)
05/19 19Z,   0.70, -16.13,  99.90, -16.43,  -1.00,
05/19 20Z,   0.70, -14.20,  99.90, -14.51,  -1.01,
05/19 21Z,   0.70, -11.49,  99.90, -11.81,  -1.02,
05/19 22Z,   0.60,  -8.66,  99.90,  -9.09,  -1.03,
05/19 23Z,   0.60,  -6.35,  99.90,  -6.79,  -1.04,
05/20 00Z,   0.60,  -5.04,  99.90,  -5.49,  -1.05,
05/20 01Z,   0.50,  -4.87,  99.90,  -5.43,  -1.06,  (max)
05/20 02Z,   0.50,  -5.72,  99.90,  -6.30,  -1.07,
05/20 03Z,   0.50,  -7.30,  99.90,  -7.88,  -1.08,
05/20 04Z,   0.50,  -9.11,  99.90,  -9.70,  -1.10,
05/20 05Z,   0.60, -10.53,  99.90, -11.03,  -1.10,
05/20 06Z,   0.50, -11.01,  99.90, -11.61,  -1.10,  (min)
05/20 07Z,   0.60, -10.33,  99.90, -10.83,  -1.10,
05/20 08Z,   0.60,  -8.66,  99.90,  -9.15,  -1.10,
05/20 09Z,   0.60,  -6.41,  99.90,  -6.91,  -1.10,
05/20 10Z,   0.60,  -4.15,  99.90,  -4.65,  -1.10,
05/20 11Z,   0.60,  -2.49,  99.90,  -2.98,  -1.10,
05/20 12Z,   0.70,  -1.90,  99.90,  -2.30,  -1.10,  (max)
05/20 13Z,   0.50,  -2.62,  99.90,  -3.21,  -1.10,
05/20 14Z,   0.40,  -4.53,  99.90,  -5.23,  -1.10,
05/20 15Z,   0.50,  -7.34,  99.90,  -7.93,  -1.10,
05/20 16Z,   0.60, -10.55,  99.90, -11.04,  -1.10,
05/20 17Z,   0.50, -13.50,  99.90, -14.10,  -1.10,
05/20 18Z,   0.50, -15.52,  99.90, -16.11,  -1.10,
05/20 19Z,   0.70, -16.16,  99.90, -16.55,  -1.10,  (min)
05/20 20Z,   0.80, -15.38,  99.90, -15.68,  -1.10,
05/20 21Z,   0.80, -13.49,  99.90, -13.79,  -1.10,
05/20 22Z,   0.90, -10.98,  99.90, -11.17,  -1.10,
05/20 23Z,   1.00,  -8.42,  99.90,  -8.51,  -1.10,
05/21 00Z,   1.00,  -6.39,  99.90,  -6.48,  -1.10,
05/21 01Z,   1.00,  -5.27,  99.90,  -5.37,  -1.10,
05/21 02Z,   1.00,  -5.18,  99.90,  -5.28,  -1.10,  (max)
05/21 03Z,   1.10,  -6.00,  99.90,  -6.00,  -1.10,
05/21 04Z,   1.00,  -7.46,  99.90,  -7.55,  -1.10,
05/21 05Z,   0.80,  -9.09,  99.90,  -9.39,  -1.10,
05/21 06Z,   1.00, -10.33,  99.90, -10.43,  -1.10,
05/21 07Z,   1.10, -10.70,  99.90, -10.70,  -1.10,  (min)
05/21 08Z,   0.90, -10.05,  99.90, -10.24,  -1.10,
05/21 09Z,   0.80,  -8.56,  99.90,  -8.85,  -1.10,
05/21 10Z,   0.90,  -6.60,  99.90,  -6.80,  -1.10,
05/21 11Z,   0.90,  -4.68,  99.90,  -4.88,  -1.10,
05/21 12Z,   0.80,  -3.31,  99.90,  -3.60,  -1.10,
05/21 13Z,   0.70,  -2.89,  99.90,  -3.29,  -1.10,  (max)
05/21 14Z,   0.70,  -3.60,  99.90,  -4.00,  -1.10,
05/21 15Z,   0.80,  -5.35,  99.90,  -5.64,  -1.10,
05/21 16Z,   0.70,  -7.85,  99.90,  -8.24,  -1.10,
05/21 17Z,   0.70, -10.67,  99.90, -11.07,  -1.10,
05/21 18Z,   0.70, -13.22,  99.90, -13.61,  -1.10,
05/21 19Z,   0.70, -14.88,  99.90, -15.28,  -1.10,
05/21 20Z,   0.60, -15.32,  99.90, -15.81,  -1.10,  (min)
05/21 21Z,   0.70, -14.53,  99.90, -14.92,  -1.10,
05/21 22Z,   0.60, -12.79,  99.90, -13.29,  -1.10,
05/21 23Z,   0.70, -10.53,  99.90, -10.93,  -1.10,
05/22 00Z,   0.60,  -8.25,  99.90,  -8.74,  -1.10,
05/22 01Z,   0.60,  -6.44,  99.90,  -6.94,  -1.10,
05/22 02Z,   0.60,  -5.45,  99.90,  -5.95,  -1.10,
05/22 03Z,   0.60,  -5.37,  99.90,  -5.86,  -1.10,  (max)
05/22 04Z,   0.60,  -6.10,  99.90,  -6.59,  -1.10,
05/22 05Z,   0.60,  -7.42,  99.90,  -7.92,  -1.10,
05/22 06Z,   0.50,  -8.92,  99.90,  -9.51,  -1.10,
05/22 07Z,   0.60, -10.07,  99.90, -10.57,  -1.10,
05/22 08Z,   0.60, -10.47,  99.90, -10.96,  -1.10,  (min)
05/22 09Z,   0.60,  -9.99,  99.90, -10.49,  -1.10,
05/22 10Z,   0.60,  -8.80,  99.90,  -9.30,  -1.10,
05/22 11Z,   0.50,  -7.20,  99.90,  -7.80,  -1.10,
05/22 12Z,   0.50,  -5.59,  99.90,  -6.19,  -1.10,
05/22 13Z,   0.50,  -4.42,  99.90,  -5.01,  -1.10,
05/22 14Z,   0.50,  -4.04,  99.90,  -4.64,  -1.10,  (max)
05/22 15Z,   0.50,  -4.61,  99.90,  -5.20,  -1.10,
05/22 16Z,   0.50,  -6.05,  99.90,  -6.64,  -1.10,
05/22 17Z,   0.40,  -8.16,  99.90,  -8.85,  -1.10,
05/22 18Z,   0.50, -10.56,  99.90, -11.15,  -1.10,
05/22 19Z,   0.50, -12.71,  99.90, -13.30,  -1.10,
05/22 20Z,   0.60, -14.09,  99.90, -14.58,  -1.10,
05/22 21Z,   0.60, -14.41,  99.90, -14.90,  -1.10,  (min)
05/22 22Z,   0.60, -13.68,  99.90, -14.18,  -1.10,
05/22 23Z,   0.60, -12.14,  99.90, -12.64,  -1.10,
05/23 00Z,   0.60, -10.12,  99.90, -10.61,  -1.10,
05/23 01Z,   0.60,  -8.06,  99.90,  -8.55,  -1.10,
05/23 02Z,   0.50,  -6.40,  99.90,  -7.00,  -1.10,
05/23 03Z,   0.50,  -5.46,  99.90,  -6.06,  -1.10,
05/23 04Z,   0.50,  -5.34,  99.90,  -5.93,  -1.10,  (max)
05/23 05Z,   0.60,  -5.99,  99.90,  -6.49,  -1.10,
05/23 06Z,   0.60,  -7.23,  99.90,  -7.73,  -1.10,
05/23 07Z,  99.90,  -8.69,  99.90,  99.90,  -1.10,
05/23 08Z,  99.90,  -9.88,  99.90,  99.90,  -1.10,
05/23 09Z,  99.90, -10.44,  99.90,  99.90,  -1.10,
05/23 10Z,  99.90, -10.24,  99.90,  99.90,  -1.10,
05/23 11Z,  99.90,  -9.39,  99.90,  99.90,  -1.10,
05/23 12Z,  99.90,  -8.11,  99.90,  99.90,  -1.10,