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
#Unalaska, AK : 08/09/2026 10:22:52 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/07 18Z,  -0.20,  -5.40,  -5.65,  99.90,  -0.05,
08/07 19Z,  -0.20,  -4.73,  -4.99,  99.90,  -0.06,
08/07 20Z,  -0.20,  -4.01,  -4.37,  99.90,  -0.16,
08/07 21Z,  -0.20,  -3.36,  -3.73,  99.90,  -0.17,
08/07 22Z,  -0.20,  -2.88,  -3.18,  99.90,  -0.10,
08/07 23Z,  -0.20,  -2.60,  -2.78,  99.90,   0.02,
08/08 00Z,  -0.20,  -2.49,  -2.62,  99.90,   0.07,  (max)
08/08 01Z,  -0.20,  -2.49,  -2.70,  99.90,  -0.01,  (min)
08/08 02Z,  -0.20,  -2.51,  -2.67,  99.90,   0.04,  (max)
08/08 03Z,  -0.20,  -2.47,  -2.70,  99.90,  -0.03,  (min)
08/08 04Z,  -0.20,  -2.31,  -2.58,  99.90,  -0.07,
08/08 05Z,  -0.20,  -2.02,  -2.50,  99.90,  -0.28,
08/08 06Z,  -0.30,  -1.65,  -2.31,  99.90,  -0.36,
08/08 07Z,  -0.30,  -1.30,  -1.96,  99.90,  -0.36,
08/08 08Z,  -0.30,  -1.06,  -1.71,  99.90,  -0.35,  (max)
08/08 09Z,  -0.30,  -1.06,  -1.72,  99.90,  -0.36,
08/08 10Z,  -0.30,  -1.35,  -1.91,  99.90,  -0.26,
08/08 11Z,  -0.20,  -1.97,  -2.42,  99.90,  -0.25,
08/08 12Z,  -0.30,  -2.84,  -3.24,  99.90,  -0.10,
08/08 13Z,  -0.30,  -3.86,  -4.11,  99.90,   0.05,
08/08 14Z,  -0.30,  -4.87,  -5.08,  99.90,   0.09,
08/08 15Z,  -0.30,  -5.70,  -6.00,  99.90,   0.00,
08/08 16Z,  -0.30,  -6.22,  -6.44,  99.90,   0.08,
08/08 17Z,  -0.30,  -6.35,  -6.70,  99.90,  -0.05,  (min)
08/08 18Z,  -0.30,  -6.09,  -6.49,  99.90,  -0.10,
08/08 19Z,  -0.30,  -5.52,  -5.92,  99.90,  -0.10,
08/08 20Z,  -0.30,  -4.76,  -5.20,  99.90,  -0.14,
08/08 21Z,  -0.30,  -3.97,  -4.35,  99.90,  -0.08,
08/08 22Z,  -0.30,  -3.28,  -3.62,  99.90,  -0.04,
08/08 23Z,  -0.30,  -2.77,  -3.02,  99.90,   0.05,
08/09 00Z,  -0.40,  -2.48,  -2.68,  99.90,   0.20,
08/09 01Z,  -0.40,  -2.37,  -2.52,  99.90,   0.25,  (max)
08/09 02Z,  -0.40,  -2.37,  -2.55,  99.90,   0.22,
08/09 03Z,  -0.40,  -2.38,  -2.62,  99.90,   0.16,  (min)
08/09 04Z,  -0.40,  -2.32,  -2.58,  99.90,   0.14,
08/09 05Z,  -0.40,  -2.13,  -2.49,  99.90,   0.04,
08/09 06Z,  -0.40,  -1.82,  -2.21,  99.90,   0.01,
08/09 07Z,  -0.40,  -1.44,  -1.99,  99.90,  -0.15,
08/09 08Z,  -0.40,  -1.08,  -1.67,  99.90,  -0.19,
08/09 09Z,  -0.40,  -0.87,  -1.43,  99.90,  -0.16,
08/09 10Z,  -0.30,  -0.91,  -1.41,  99.90,  -0.20,  (max)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/09 11Z,  -0.30,  -1.28,  99.90,  -1.75,  -0.18,
08/09 12Z,  -0.40,  -1.97,  99.90,  -2.52,  -0.15,
08/09 13Z,  -0.30,  -2.93,  99.90,  -3.35,  -0.12,
08/09 14Z,  -0.30,  -4.02,  99.90,  -4.42,  -0.10,
08/09 15Z,  -0.40,  -5.07,  99.90,  -5.54,  -0.07,
08/09 16Z,  -0.40,  -5.91,  99.90,  -6.36,  -0.05,
08/09 17Z,  -0.40,  -6.41,  99.90,  -6.83,  -0.02,  (min)
08/09 18Z,  -0.30,  -6.49,  99.90,  -6.78,   0.01,
08/09 19Z,  -0.30,  -6.17,  99.90,  -6.44,   0.03,
08/09 20Z,  -0.30,  -5.54,  99.90,  -5.78,   0.06,
08/09 21Z,  -0.30,  -4.73,  99.90,  -4.94,   0.09,
08/09 22Z,  -0.30,  -3.90,  99.90,  -4.08,   0.11,
08/09 23Z,  -0.30,  -3.18,  99.90,  -3.37,   0.11,
08/10 00Z,  -0.30,  -2.68,  99.90,  -2.87,   0.11,
08/10 01Z,  -0.30,  -2.40,  99.90,  -2.59,   0.11,
08/10 02Z,  -0.30,  -2.31,  99.90,  -2.50,   0.11,  (max)
08/10 03Z,  -0.30,  -2.33,  99.90,  -2.51,   0.11,
08/10 04Z,  -0.30,  -2.35,  99.90,  -2.54,   0.11,  (min)
08/10 05Z,  -0.30,  -2.29,  99.90,  -2.48,   0.11,
08/10 06Z,  -0.30,  -2.10,  99.90,  -2.29,   0.11,
08/10 07Z,  -0.30,  -1.78,  99.90,  -1.97,   0.11,
08/10 08Z,  -0.30,  -1.39,  99.90,  -1.57,   0.11,
08/10 09Z,  -0.30,  -1.03,  99.90,  -1.22,   0.11,
08/10 10Z,  -0.30,  -0.83,  99.90,  -1.02,   0.11,  (max)
08/10 11Z,  -0.30,  -0.90,  99.90,  -1.09,   0.11,
08/10 12Z,  -0.30,  -1.30,  99.90,  -1.49,   0.11,
08/10 13Z,  -0.30,  -2.03,  99.90,  -2.22,   0.11,
08/10 14Z,  -0.30,  -3.03,  99.90,  -3.21,   0.11,
08/10 15Z,  -0.30,  -4.13,  99.90,  -4.32,   0.11,
08/10 16Z,  -0.30,  -5.18,  99.90,  -5.37,   0.11,
08/10 17Z,  -0.40,  -6.00,  99.90,  -6.29,   0.11,
08/10 18Z,  -0.40,  -6.46,  99.90,  -6.75,   0.11,
08/10 19Z,  -0.40,  -6.49,  99.90,  -6.78,   0.11,  (min)
08/10 20Z,  -0.40,  -6.12,  99.90,  -6.41,   0.11,
08/10 21Z,  -0.50,  -5.44,  99.90,  -5.83,   0.11,
08/10 22Z,  -0.50,  -4.61,  99.90,  -4.99,   0.11,
08/10 23Z,  -0.50,  -3.77,  99.90,  -4.16,   0.11,
08/11 00Z,  -0.50,  -3.06,  99.90,  -3.45,   0.11,
08/11 01Z,  -0.50,  -2.58,  99.90,  -2.97,   0.11,
08/11 02Z,  -0.50,  -2.34,  99.90,  -2.73,   0.11,
08/11 03Z,  -0.50,  -2.29,  99.90,  -2.68,   0.11,  (max)
08/11 04Z,  -0.50,  -2.35,  99.90,  -2.74,   0.11,
08/11 05Z,  -0.50,  -2.41,  99.90,  -2.80,   0.11,  (min)
08/11 06Z,  -0.50,  -2.38,  99.90,  -2.77,   0.11,
08/11 07Z,  -0.50,  -2.21,  99.90,  -2.60,   0.11,
08/11 08Z,  -0.50,  -1.91,  99.90,  -2.30,   0.11,
08/11 09Z,  -0.50,  -1.53,  99.90,  -1.92,   0.11,
08/11 10Z,  -0.50,  -1.18,  99.90,  -1.57,   0.11,
08/11 11Z,  -0.50,  -0.98,  99.90,  -1.37,   0.11,  (max)
08/11 12Z,  -0.50,  -1.05,  99.90,  -1.44,   0.11,
08/11 13Z,  -0.50,  -1.44,  99.90,  -1.83,   0.11,
08/11 14Z,  -0.50,  -2.16,  99.90,  -2.55,   0.11,
08/11 15Z,  -0.50,  -3.13,  99.90,  -3.52,   0.11,
08/11 16Z,  -0.50,  -4.20,  99.90,  -4.59,   0.11,
08/11 17Z,  -0.50,  -5.20,  99.90,  -5.59,   0.11,
08/11 18Z,  -0.50,  -5.97,  99.90,  -6.35,   0.11,
08/11 19Z,  -0.50,  -6.37,  99.90,  -6.75,   0.11,  (min)
08/11 20Z,  -0.50,  -6.35,  99.90,  -6.74,   0.11,
08/11 21Z,  -0.50,  -5.94,  99.90,  -6.33,   0.11,
08/11 22Z,  -0.40,  -5.24,  99.90,  -5.53,   0.11,
08/11 23Z,  -0.40,  -4.40,  99.90,  -4.69,   0.11,
08/12 00Z,  -0.40,  -3.58,  99.90,  -3.86,   0.11,
08/12 01Z,  -0.40,  -2.91,  99.90,  -3.20,   0.11,
08/12 02Z,  -0.40,  -2.47,  99.90,  -2.76,   0.11,
08/12 03Z,  -0.40,  -2.29,  99.90,  -2.57,   0.11,
08/12 04Z,  -0.30,  -2.30,  99.90,  -2.49,   0.11,  (max)
08/12 05Z,  -0.30,  -2.43,  99.90,  -2.62,   0.11,
08/12 06Z,  -0.30,  -2.55,  99.90,  -2.74,   0.11,
08/12 07Z,  -0.30,  -2.59,  99.90,  -2.78,   0.11,  (min)
08/12 08Z,  -0.30,  -2.47,  99.90,  -2.66,   0.11,
08/12 09Z,  -0.30,  -2.21,  99.90,  -2.40,   0.11,
08/12 10Z,  -0.30,  -1.86,  99.90,  -2.05,   0.11,
08/12 11Z,  -0.30,  -1.52,  99.90,  -1.71,   0.11,
08/12 12Z,  -0.20,  -1.31,  99.90,  -1.40,   0.11,  (max)
08/12 13Z,  -0.20,  -1.35,  99.90,  -1.44,   0.11,
08/12 14Z,  -0.20,  -1.69,  99.90,  -1.78,   0.11,
08/12 15Z,  -0.20,  -2.34,  99.90,  -2.43,   0.11,
08/12 16Z,  -0.20,  -3.22,  99.90,  -3.31,   0.11,
08/12 17Z,  -0.10,  -4.20,  99.90,  -4.19,   0.11,
08/12 18Z,  -0.10,  -5.12,  99.90,  -5.10,   0.11,
08/12 19Z,  -0.10,  -5.80,  99.90,  -5.79,   0.11,
08/12 20Z,  -0.10,  -6.13,  99.90,  -6.12,   0.11,  (min)
08/12 21Z,  -0.10,  -6.06,  99.90,  -6.05,   0.11,
08/12 22Z,  -0.10,  -5.63,  99.90,  -5.62,   0.11,
08/12 23Z,  -0.10,  -4.93,  99.90,  -4.92,   0.11,
08/13 00Z,   0.00,  -4.11,  99.90,  -4.00,   0.11,
08/13 01Z,  99.90,  -3.33,  99.90,  99.90,   0.11,
08/13 02Z,  99.90,  -2.72,  99.90,  99.90,   0.11,
08/13 03Z,  99.90,  -2.35,  99.90,  99.90,   0.11,
08/13 04Z,  99.90,  -2.24,  99.90,  99.90,   0.11,
08/13 05Z,  99.90,  -2.34,  99.90,  99.90,   0.11,
08/13 06Z,  99.90,  -2.56,  99.90,  99.90,   0.11,