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 : 05/18/2026 15:21:06 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/17 00Z,  -0.60,  10.62,  10.62,  99.90,   0.60,  (max)
05/17 01Z,  -0.60,   8.68,   8.81,  99.90,   0.73,
05/17 02Z,  -0.50,   6.26,   6.48,  99.90,   0.72,
05/17 03Z,  -0.50,   4.13,   4.44,  99.90,   0.81,
05/17 04Z,  -0.50,   2.87,   3.28,  99.90,   0.91,  (min)
05/17 05Z,  -0.50,   2.86,   3.44,  99.90,   1.08,
05/17 06Z,  -0.40,   4.12,   4.78,  99.90,   1.06,
05/17 07Z,  -0.30,   6.47,   7.10,  99.90,   0.93,
05/17 08Z,  -0.30,   9.53,  10.26,  99.90,   1.03,
05/17 09Z,  -0.30,  12.47,  12.99,  99.90,   0.82,
05/17 10Z,  -0.30,  14.24,  14.31,  99.90,   0.37,  (max)
05/17 11Z,  -0.30,  14.23,  14.21,  99.90,   0.28,
05/17 12Z,  -0.30,  12.44,  12.70,  99.90,   0.56,
05/17 13Z,  -0.30,   9.27,   9.58,  99.90,   0.61,
05/17 14Z,  -0.30,   5.36,   5.69,  99.90,   0.63,
05/17 15Z,  -0.30,   1.49,   1.82,  99.90,   0.63,
05/17 16Z,  -0.30,  -1.58,  -1.44,  99.90,   0.44,
05/17 17Z,  -0.30,  -3.27,  -3.05,  99.90,   0.52,  (min)
05/17 18Z,  -0.30,  -3.27,  -2.99,  99.90,   0.58,
05/17 19Z,  -0.30,  -1.58,  -1.62,  99.90,   0.26,
05/17 20Z,  -0.30,   1.56,   1.55,  99.90,   0.29,
05/17 21Z,  -0.30,   5.46,   5.71,  99.90,   0.55,
05/17 22Z,  -0.30,   8.96,   9.10,  99.90,   0.44,
05/17 23Z,  -0.30,  11.07,  10.94,  99.90,   0.17,
05/18 00Z,  -0.40,  11.46,  11.08,  99.90,   0.02,  (max)
05/18 01Z,  -0.40,  10.36,   9.96,  99.90,  -0.00,
05/18 02Z,  -0.40,   8.27,   7.99,  99.90,   0.12,
05/18 03Z,  -0.40,   5.91,   5.68,  99.90,   0.17,
05/18 04Z,  -0.40,   3.96,   3.79,  99.90,   0.23,
05/18 05Z,  -0.40,   2.98,   2.99,  99.90,   0.41,  (min)
05/18 06Z,  -0.50,   3.25,   3.39,  99.90,   0.64,
05/18 07Z,  -0.50,   4.77,   4.92,  99.90,   0.65,
05/18 08Z,  -0.50,   7.32,   7.51,  99.90,   0.69,
05/18 09Z,  -0.50,  10.41,  10.58,  99.90,   0.67,
05/18 10Z,  -0.50,  13.13,  13.12,  99.90,   0.49,
05/18 11Z,  -0.50,  14.45,  14.05,  99.90,   0.10,  (max)
05/18 12Z,  -0.50,  13.94,  13.67,  99.90,   0.23,
05/18 13Z,  -0.60,  11.73,  11.75,  99.90,   0.62,
05/18 14Z,  -0.60,   8.32,   8.28,  99.90,   0.56,
05/18 15Z,  -0.60,   4.38,   4.41,  99.90,   0.63,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/18 16Z,  -0.60,   0.66,  99.90,   0.67,   0.61,
05/18 17Z,  -0.60,  -2.15,  99.90,  -2.16,   0.60,
05/18 18Z,  -0.60,  -3.52,  99.90,  -3.55,   0.58,  (min)
05/18 19Z,  -0.60,  -3.17,  99.90,  -3.21,   0.56,
05/18 20Z,  -0.60,  -1.15,  99.90,  -1.21,   0.54,
05/18 21Z,  -0.50,   2.21,  99.90,   2.23,   0.52,
05/18 22Z,  -0.50,   6.10,  99.90,   6.10,   0.50,
05/18 23Z,  -0.50,   9.33,  99.90,   9.31,   0.48,
05/19 00Z,  -0.50,  11.06,  99.90,  11.02,   0.46,  (max)
05/19 01Z,  -0.60,  11.13,  99.90,  10.97,   0.44,
05/19 02Z,  -0.60,   9.84,  99.90,   9.66,   0.42,
05/19 03Z,  -0.70,   7.77,  99.90,   7.47,   0.40,
05/19 04Z,  -0.70,   5.58,  99.90,   5.28,   0.40,
05/19 05Z,  -0.70,   3.89,  99.90,   3.60,   0.40,
05/19 06Z,  -0.70,   3.17,  99.90,   2.88,   0.40,  (min)
05/19 07Z,  -0.50,   3.68,  99.90,   3.59,   0.40,
05/19 08Z,  -0.40,   5.36,  99.90,   5.37,   0.40,
05/19 09Z,  -0.30,   7.95,  99.90,   8.06,   0.40,
05/19 10Z,  -0.30,  10.89,  99.90,  10.99,   0.40,
05/19 11Z,  -0.30,  13.23,  99.90,  13.33,   0.40,
05/19 12Z,  -0.30,  14.08,  99.90,  14.19,   0.40,  (max)
05/19 13Z,  -0.30,  13.18,  99.90,  13.28,   0.40,
05/19 14Z,  -0.40,  10.78,  99.90,  10.78,   0.40,
05/19 15Z,  -0.40,   7.39,  99.90,   7.39,   0.40,
05/19 16Z,  -0.50,   3.66,  99.90,   3.56,   0.40,
05/19 17Z,  -0.50,   0.26,  99.90,   0.16,   0.40,
05/19 18Z,  -0.50,  -2.21,  99.90,  -2.30,   0.40,
05/19 19Z,  -0.60,  -3.22,  99.90,  -3.42,   0.40,  (min)
05/19 20Z,  -0.60,  -2.58,  99.90,  -2.78,   0.40,
05/19 21Z,  -0.60,  -0.39,  99.90,  -0.59,   0.40,
05/19 22Z,  -0.60,   2.95,  99.90,   2.76,   0.40,
05/19 23Z,  -0.70,   6.59,  99.90,   6.29,   0.40,
05/20 00Z,  -0.70,   9.41,  99.90,   9.11,   0.40,
05/20 01Z,  -0.70,  10.73,  99.90,  10.44,   0.40,  (max)
05/20 02Z,  -0.80,  10.56,  99.90,  10.16,   0.40,
05/20 03Z,  -0.80,   9.24,  99.90,   8.85,   0.40,
05/20 04Z,  -0.80,   7.32,  99.90,   6.93,   0.40,
05/20 05Z,  -0.80,   5.38,  99.90,   4.98,   0.40,
05/20 06Z,  -0.80,   3.95,  99.90,   3.55,   0.40,
05/20 07Z,  -0.80,   3.46,  99.90,   3.06,   0.40,  (min)
05/20 08Z,  -0.80,   4.11,  99.90,   3.71,   0.40,
05/20 09Z,  -0.70,   5.80,  99.90,   5.50,   0.40,
05/20 10Z,  -0.70,   8.23,  99.90,   7.93,   0.40,
05/20 11Z,  -0.60,  10.84,  99.90,  10.64,   0.40,
05/20 12Z,  -0.60,  12.74,  99.90,  12.54,   0.40,
05/20 13Z,  -0.60,  13.19,  99.90,  13.00,   0.40,  (max)
05/20 14Z,  -0.60,  12.09,  99.90,  11.89,   0.40,
05/20 15Z,  -0.70,   9.75,  99.90,   9.45,   0.40,
05/20 16Z,  -0.70,   6.63,  99.90,   6.34,   0.40,
05/20 17Z,  -0.70,   3.28,  99.90,   2.98,   0.40,
05/20 18Z,  -0.60,   0.28,  99.90,   0.09,   0.40,
05/20 19Z,  -0.60,  -1.79,  99.90,  -1.98,   0.40,
05/20 20Z,  -0.50,  -2.48,  99.90,  -2.58,   0.40,  (min)
05/20 21Z,  -0.50,  -1.67,  99.90,  -1.77,   0.40,
05/20 22Z,  -0.50,   0.50,  99.90,   0.41,   0.40,
05/20 23Z,  -0.50,   3.63,  99.90,   3.53,   0.40,
05/21 00Z,  -0.50,   6.87,  99.90,   6.77,   0.40,
05/21 01Z,  -0.60,   9.24,  99.90,   9.04,   0.40,
05/21 02Z,  -0.60,  10.24,  99.90,  10.04,   0.40,  (max)
05/21 03Z,  -0.70,   9.97,  99.90,   9.68,   0.40,
05/21 04Z,  -0.70,   8.76,  99.90,   8.47,   0.40,
05/21 05Z,  -0.70,   7.06,  99.90,   6.76,   0.40,
05/21 06Z,  -0.60,   5.35,  99.90,   5.15,   0.40,
05/21 07Z,  -0.60,   4.13,  99.90,   3.93,   0.40,
05/21 08Z,  -0.50,   3.77,  99.90,   3.68,   0.40,  (min)
05/21 09Z,  -0.40,   4.42,  99.90,   4.42,   0.40,
05/21 10Z,  -0.40,   5.93,  99.90,   5.93,   0.40,
05/21 11Z,  -0.40,   8.05,  99.90,   8.06,   0.40,
05/21 12Z,  -0.40,  10.26,  99.90,  10.27,   0.40,
05/21 13Z,  -0.40,  11.75,  99.90,  11.76,   0.40,
05/21 14Z,  -0.50,  11.96,  99.90,  11.87,   0.40,  (max)
05/21 15Z,  -0.50,  10.89,  99.90,  10.80,   0.40,
05/21 16Z,  -0.60,   8.83,  99.90,   8.64,   0.40,
05/21 17Z,  -0.60,   6.13,  99.90,   5.93,   0.40,
05/21 18Z,  -0.60,   3.23,  99.90,   3.04,   0.40,
05/21 19Z,  -0.60,   0.68,  99.90,   0.49,   0.40,
05/21 20Z,  -0.60,  -1.01,  99.90,  -1.21,   0.40,
05/21 21Z,  -0.60,  -1.47,  99.90,  -1.67,   0.40,  (min)
05/21 22Z,  -0.50,  -0.63,  99.90,  -0.73,   0.40,
05/21 23Z,  -0.50,   1.38,  99.90,   1.28,   0.40,
05/22 00Z,  -0.50,   4.18,  99.90,   4.08,   0.40,
05/22 01Z,  -0.50,   6.99,  99.90,   6.90,   0.40,
05/22 02Z,  -0.50,   8.98,  99.90,   8.88,   0.40,
05/22 03Z,  -0.60,   9.80,  99.90,   9.61,   0.40,  (max)
05/22 04Z,  -0.50,   9.57,  99.90,   9.48,   0.40,
05/22 05Z,  -0.50,   8.53,  99.90,   8.43,   0.40,
05/22 06Z,  -0.50,   7.01,  99.90,   6.92,   0.40,
05/22 07Z,  99.90,   5.48,  99.90,  99.90,   0.40,
05/22 08Z,  99.90,   4.37,  99.90,  99.90,   0.40,
05/22 09Z,  99.90,   4.00,  99.90,  99.90,   0.40,
05/22 10Z,  99.90,   4.47,  99.90,  99.90,   0.40,
05/22 11Z,  99.90,   5.67,  99.90,  99.90,   0.40,
05/22 12Z,  99.90,   7.41,  99.90,  99.90,   0.40,