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
#Alitak, AK : 08/18/2026 09:21:57 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/16 18Z,  -0.40,   0.98,   1.40,  99.90,   0.82,
08/16 19Z,  -0.40,  -0.13,   0.34,  99.90,   0.87,  (min)
08/16 20Z,  -0.40,   0.20,   0.72,  99.90,   0.92,
08/16 21Z,  -0.40,   1.92,   2.31,  99.90,   0.79,
08/16 22Z,  -0.40,   4.75,   5.08,  99.90,   0.73,
08/16 23Z,  -0.40,   8.06,   8.70,  99.90,   1.04,
08/17 00Z,  -0.30,  10.85,  11.44,  99.90,   0.89,
08/17 01Z,  -0.30,  12.26,  12.72,  99.90,   0.76,  (max)
08/17 02Z,  -0.20,  12.06,  12.50,  99.90,   0.64,
08/17 03Z,  -0.20,  10.48,  11.09,  99.90,   0.81,
08/17 04Z,  -0.10,   7.96,   8.48,  99.90,   0.62,
08/17 05Z,   0.00,   5.10,   5.66,  99.90,   0.56,
08/17 06Z,  -0.10,   2.53,   3.11,  99.90,   0.68,
08/17 07Z,  -0.10,   0.83,   1.26,  99.90,   0.53,
08/17 08Z,  -0.10,   0.40,   0.79,  99.90,   0.49,  (min)
08/17 09Z,  -0.10,   1.27,   1.78,  99.90,   0.61,
08/17 10Z,  -0.10,   3.26,   3.34,  99.90,   0.18,
08/17 11Z,  -0.10,   5.97,   5.95,  99.90,   0.08,
08/17 12Z,  -0.10,   8.59,   8.61,  99.90,   0.12,
08/17 13Z,  -0.10,  10.23,  10.09,  99.90,  -0.04,
08/17 14Z,  -0.10,  10.49,  10.20,  99.90,  -0.19,  (max)
08/17 15Z,  -0.10,   9.48,   9.39,  99.90,   0.01,
08/17 16Z,  -0.20,   7.56,   7.63,  99.90,   0.27,
08/17 17Z,  -0.20,   5.22,   5.21,  99.90,   0.19,
08/17 18Z,  -0.20,   3.05,   3.09,  99.90,   0.24,
08/17 19Z,  -0.20,   1.60,   1.73,  99.90,   0.33,
08/17 20Z,  -0.20,   1.28,   1.31,  99.90,   0.23,  (min)
08/17 21Z,  -0.20,   2.17,   2.23,  99.90,   0.26,
08/17 22Z,  -0.20,   4.08,   4.14,  99.90,   0.26,
08/17 23Z,  -0.30,   6.69,   6.68,  99.90,   0.29,
08/18 00Z,  -0.30,   9.38,   9.26,  99.90,   0.18,
08/18 01Z,  -0.30,  11.31,  11.27,  99.90,   0.26,
08/18 02Z,  -0.30,  11.89,  11.56,  99.90,  -0.03,  (max)
08/18 03Z,  -0.30,  11.14,  10.77,  99.90,  -0.07,
08/18 04Z,  -0.40,   9.35,   9.15,  99.90,   0.20,
08/18 05Z,  -0.40,   6.92,   6.74,  99.90,   0.22,
08/18 06Z,  -0.40,   4.38,   4.24,  99.90,   0.26,
08/18 07Z,  -0.40,   2.28,   2.24,  99.90,   0.36,
08/18 08Z,  -0.50,   1.09,   1.11,  99.90,   0.52,  (min)
08/18 09Z,  -0.50,   1.04,   1.12,  99.90,   0.58,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/18 10Z,  -0.50,   2.04,  99.90,   2.15,   0.62,
08/18 11Z,  -0.60,   3.87,  99.90,   3.92,   0.65,
08/18 12Z,  -0.60,   6.15,  99.90,   6.23,   0.68,
08/18 13Z,  -0.60,   8.16,  99.90,   8.27,   0.71,
08/18 14Z,  -0.60,   9.22,  99.90,   9.36,   0.74,  (max)
08/18 15Z,  -0.60,   9.15,  99.90,   9.32,   0.77,
08/18 16Z,  -0.60,   8.18,  99.90,   8.38,   0.80,
08/18 17Z,  -0.60,   6.60,  99.90,   6.83,   0.83,
08/18 18Z,  -0.60,   4.85,  99.90,   5.11,   0.86,
08/18 19Z,  -0.60,   3.42,  99.90,   3.71,   0.89,
08/18 20Z,  -0.60,   2.71,  99.90,   3.03,   0.92,  (min)
08/18 21Z,  -0.60,   2.97,  99.90,   3.32,   0.95,
08/18 22Z,  -0.60,   4.12,  99.90,   4.47,   0.95,
08/18 23Z,  -0.60,   5.91,  99.90,   6.26,   0.95,
08/19 00Z,  -0.60,   8.03,  99.90,   8.39,   0.95,
08/19 01Z,  -0.60,   9.98,  99.90,  10.34,   0.95,
08/19 02Z,  -0.60,  11.10,  99.90,  11.46,   0.95,  (max)
08/19 03Z,  -0.70,  11.09,  99.90,  11.34,   0.95,
08/19 04Z,  -0.70,  10.07,  99.90,  10.32,   0.95,
08/19 05Z,  -0.70,   8.32,  99.90,   8.58,   0.95,
08/19 06Z,  -0.70,   6.18,  99.90,   6.43,   0.95,
08/19 07Z,  -0.60,   4.07,  99.90,   4.43,   0.95,
08/19 08Z,  -0.60,   2.45,  99.90,   2.80,   0.95,
08/19 09Z,  -0.60,   1.65,  99.90,   2.00,   0.95,  (min)
08/19 10Z,  -0.60,   1.78,  99.90,   2.13,   0.95,
08/19 11Z,  -0.60,   2.69,  99.90,   3.04,   0.95,
08/19 12Z,  -0.60,   4.19,  99.90,   4.54,   0.95,
08/19 13Z,  -0.70,   5.97,  99.90,   6.22,   0.95,
08/19 14Z,  -0.70,   7.43,  99.90,   7.69,   0.95,
08/19 15Z,  -0.80,   8.12,  99.90,   8.27,   0.95,  (max)
08/19 16Z,  -0.80,   7.99,  99.90,   8.14,   0.95,
08/19 17Z,  -0.80,   7.25,  99.90,   7.40,   0.95,
08/19 18Z,  -0.80,   6.14,  99.90,   6.29,   0.95,
08/19 19Z,  -0.80,   5.00,  99.90,   5.15,   0.95,
08/19 20Z,  -0.70,   4.20,  99.90,   4.45,   0.95,
08/19 21Z,  -0.70,   4.03,  99.90,   4.28,   0.95,  (min)
08/19 22Z,  -0.80,   4.57,  99.90,   4.72,   0.95,
08/19 23Z,  -0.80,   5.68,  99.90,   5.83,   0.95,
08/20 00Z,  -0.80,   7.11,  99.90,   7.26,   0.95,
08/20 01Z,  -0.80,   8.65,  99.90,   8.80,   0.95,
08/20 02Z,  -0.80,   9.93,  99.90,  10.08,   0.95,
08/20 03Z,  -0.80,  10.48,  99.90,  10.63,   0.95,  (max)
08/20 04Z,  -0.80,  10.17,  99.90,  10.32,   0.95,
08/20 05Z,  -0.80,   9.16,  99.90,   9.31,   0.95,
08/20 06Z,  -0.80,   7.64,  99.90,   7.79,   0.95,
08/20 07Z,  -0.80,   5.86,  99.90,   6.02,   0.95,
08/20 08Z,  -0.80,   4.17,  99.90,   4.32,   0.95,
08/20 09Z,  -0.70,   2.89,  99.90,   3.14,   0.95,
08/20 10Z,  -0.70,   2.27,  99.90,   2.52,   0.95,  (min)
08/20 11Z,  -0.70,   2.35,  99.90,   2.60,   0.95,
08/20 12Z,  -0.70,   3.01,  99.90,   3.26,   0.95,
08/20 13Z,  -0.70,   4.13,  99.90,   4.38,   0.95,
08/20 14Z,  -0.70,   5.48,  99.90,   5.73,   0.95,
08/20 15Z,  -0.80,   6.61,  99.90,   6.76,   0.95,
08/20 16Z,  -0.80,   7.18,  99.90,   7.34,   0.95,
08/20 17Z,  -0.80,   7.21,  99.90,   7.36,   0.95,  (max)
08/20 18Z,  -0.80,   6.82,  99.90,   6.97,   0.95,
08/20 19Z,  -0.70,   6.18,  99.90,   6.43,   0.95,
08/20 20Z,  -0.70,   5.54,  99.90,   5.79,   0.95,
08/20 21Z,  -0.70,   5.15,  99.90,   5.41,   0.95,  (min)
08/20 22Z,  -0.70,   5.22,  99.90,   5.47,   0.95,
08/20 23Z,  -0.70,   5.76,  99.90,   6.01,   0.95,
08/21 00Z,  -0.70,   6.60,  99.90,   6.85,   0.95,
08/21 01Z,  -0.70,   7.59,  99.90,   7.84,   0.95,
08/21 02Z,  -0.70,   8.63,  99.90,   8.88,   0.95,
08/21 03Z,  -0.70,   9.47,  99.90,   9.72,   0.95,
08/21 04Z,  -0.80,   9.76,  99.90,   9.91,   0.95,  (max)
08/21 05Z,  -0.80,   9.44,  99.90,   9.59,   0.95,
08/21 06Z,  -0.70,   8.62,  99.90,   8.87,   0.95,
08/21 07Z,  -0.70,   7.41,  99.90,   7.66,   0.95,
08/21 08Z,  -0.70,   5.96,  99.90,   6.21,   0.95,
08/21 09Z,  -0.60,   4.51,  99.90,   4.86,   0.95,
08/21 10Z,  -0.60,   3.34,  99.90,   3.70,   0.95,
08/21 11Z,  -0.60,   2.68,  99.90,   3.03,   0.95,
08/21 12Z,  -0.60,   2.56,  99.90,   2.91,   0.95,  (min)
08/21 13Z,  -0.70,   2.91,  99.90,   3.16,   0.95,
08/21 14Z,  -0.70,   3.72,  99.90,   3.98,   0.95,
08/21 15Z,  -0.70,   4.86,  99.90,   5.12,   0.95,
08/21 16Z,  -0.70,   5.92,  99.90,   6.18,   0.95,
08/21 17Z,  -0.70,   6.61,  99.90,   6.86,   0.95,
08/21 18Z,  -0.70,   6.91,  99.90,   7.16,   0.95,  (max)
08/21 19Z,  -0.70,   6.89,  99.90,   7.14,   0.95,
08/21 20Z,  -0.70,   6.61,  99.90,   6.86,   0.95,
08/21 21Z,  -0.60,   6.23,  99.90,   6.59,   0.95,
08/21 22Z,  -0.60,   5.97,  99.90,   6.33,   0.95,  (min)
08/21 23Z,  -0.60,   6.00,  99.90,   6.35,   0.95,
08/22 00Z,  -0.60,   6.32,  99.90,   6.68,   0.95,
08/22 01Z,  99.90,   6.82,  99.90,  99.90,   0.95,
08/22 02Z,  99.90,   7.45,  99.90,  99.90,   0.95,
08/22 03Z,  99.90,   8.23,  99.90,  99.90,   0.95,
08/22 04Z,  99.90,   8.93,  99.90,  99.90,   0.95,
08/22 05Z,  99.90,   9.24,  99.90,  99.90,   0.95,
08/22 06Z,  99.90,   9.11,  99.90,  99.90,   0.95,