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
#Sitka, AK : 11/17/2025 19:21:00 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
11/16 00Z,   0.50,   2.28,   2.21,  99.90,  -0.57,
11/16 01Z,   0.40,   1.82,   1.71,  99.90,  -0.51,  (min)
11/16 02Z,   0.40,   2.20,   2.11,  99.90,  -0.49,
11/16 03Z,   0.40,   3.30,   3.25,  99.90,  -0.45,
11/16 04Z,   0.30,   4.81,   4.74,  99.90,  -0.37,
11/16 05Z,   0.30,   6.33,   6.30,  99.90,  -0.33,
11/16 06Z,   0.10,   7.45,   7.49,  99.90,  -0.06,
11/16 07Z,   0.10,   7.90,   7.92,  99.90,  -0.08,  (max)
11/16 08Z,   0.10,   7.57,   7.68,  99.90,   0.01,
11/16 09Z,   0.10,   6.58,   6.66,  99.90,  -0.02,
11/16 10Z,   0.10,   5.20,   5.38,  99.90,   0.08,
11/16 11Z,   0.20,   3.84,   3.95,  99.90,  -0.09,
11/16 12Z,   0.00,   2.90,   3.11,  99.90,   0.21,
11/16 13Z,   0.00,   2.67,   2.80,  99.90,   0.13,  (min)
11/16 14Z,   0.10,   3.27,   3.46,  99.90,   0.09,
11/16 15Z,   0.10,   4.60,   4.70,  99.90,   0.00,
11/16 16Z,   0.10,   6.36,   6.47,  99.90,   0.01,
11/16 17Z,   0.00,   8.12,   8.11,  99.90,  -0.01,
11/16 18Z,   0.00,   9.45,   9.44,  99.90,  -0.01,
11/16 19Z,   0.00,   9.99,   9.90,  99.90,  -0.09,  (max)
11/16 20Z,   0.10,   9.57,   9.42,  99.90,  -0.25,
11/16 21Z,   0.10,   8.26,   8.09,  99.90,  -0.27,
11/16 22Z,   0.20,   6.33,   6.19,  99.90,  -0.34,
11/16 23Z,   0.20,   4.20,   3.98,  99.90,  -0.42,
11/17 00Z,   0.20,   2.36,   2.18,  99.90,  -0.38,
11/17 01Z,   0.10,   1.22,   1.03,  99.90,  -0.29,
11/17 02Z,   0.10,   1.00,   0.83,  99.90,  -0.27,  (min)
11/17 03Z,   0.10,   1.72,   1.42,  99.90,  -0.40,
11/17 04Z,   0.20,   3.17,   2.92,  99.90,  -0.45,
11/17 05Z,   0.10,   4.97,   4.71,  99.90,  -0.36,
11/17 06Z,   0.10,   6.65,   6.44,  99.90,  -0.31,
11/17 07Z,   0.20,   7.81,   7.61,  99.90,  -0.40,
11/17 08Z,   0.20,   8.18,   8.03,  99.90,  -0.35,  (max)
11/17 09Z,   0.20,   7.71,   7.58,  99.90,  -0.33,
11/17 10Z,   0.10,   6.59,   6.48,  99.90,  -0.21,
11/17 11Z,   0.10,   5.16,   5.03,  99.90,  -0.23,
11/17 12Z,   0.10,   3.87,   3.70,  99.90,  -0.27,
11/17 13Z,   0.10,   3.12,   2.91,  99.90,  -0.31,
11/17 14Z,   0.10,   3.17,   2.89,  99.90,  -0.38,  (min)
11/17 15Z,   0.20,   4.06,   3.78,  99.90,  -0.48,
11/17 16Z,   0.20,   5.62,   5.33,  99.90,  -0.49,
11/17 17Z,   0.20,   7.46,   7.17,  99.90,  -0.49,
11/17 18Z,   0.10,   9.11,   8.72,  99.90,  -0.49,
11/17 19Z,   0.10,  10.13,   9.79,  99.90,  -0.44,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
11/17 20Z,   0.10,  10.22,  99.90,   9.89,  -0.43,  (max)
11/17 21Z,   0.10,   9.29,  99.90,   8.96,  -0.43,
11/17 22Z,   0.10,   7.50,  99.90,   7.18,  -0.42,
11/17 23Z,   0.20,   5.22,  99.90,   5.01,  -0.41,
11/18 00Z,   0.30,   2.96,  99.90,   2.86,  -0.40,
11/18 01Z,   0.30,   1.20,  99.90,   1.11,  -0.39,
11/18 02Z,   0.20,   0.34,  99.90,   0.16,  -0.38,  (min)
11/18 03Z,   0.10,   0.53,  99.90,   0.26,  -0.37,
11/18 04Z,   0.00,   1.69,  99.90,   1.33,  -0.36,
11/18 05Z,   0.00,   3.50,  99.90,   3.15,  -0.35,
11/18 06Z,  -0.10,   5.51,  99.90,   5.07,  -0.34,
11/18 07Z,  -0.10,   7.23,  99.90,   6.79,  -0.34,
11/18 08Z,  -0.10,   8.26,  99.90,   7.82,  -0.34,
11/18 09Z,   0.00,   8.40,  99.90,   8.07,  -0.34,  (max)
11/18 10Z,   0.00,   7.70,  99.90,   7.37,  -0.34,
11/18 11Z,   0.00,   6.43,  99.90,   6.09,  -0.34,
11/18 12Z,   0.00,   5.00,  99.90,   4.66,  -0.34,
11/18 13Z,   0.00,   3.86,  99.90,   3.53,  -0.34,
11/18 14Z,   0.00,   3.40,  99.90,   3.07,  -0.34,  (min)
11/18 15Z,   0.00,   3.81,  99.90,   3.47,  -0.34,
11/18 16Z,   0.00,   5.01,  99.90,   4.68,  -0.34,
11/18 17Z,   0.00,   6.75,  99.90,   6.41,  -0.34,
11/18 18Z,  -0.10,   8.56,  99.90,   8.13,  -0.34,
11/18 19Z,  -0.10,   9.97,  99.90,   9.53,  -0.34,
11/18 20Z,   0.00,  10.55,  99.90,  10.21,  -0.34,  (max)
11/18 21Z,   0.00,  10.09,  99.90,   9.75,  -0.34,
11/18 22Z,   0.00,   8.62,  99.90,   8.28,  -0.34,
11/18 23Z,   0.00,   6.41,  99.90,   6.07,  -0.34,
11/19 00Z,  -0.10,   3.93,  99.90,   3.49,  -0.34,
11/19 01Z,  -0.10,   1.71,  99.90,   1.27,  -0.34,
11/19 02Z,  -0.20,   0.24,  99.90,  -0.30,  -0.34,
11/19 03Z,  -0.20,  -0.18,  99.90,  -0.71,  -0.34,  (min)
11/19 04Z,  -0.20,   0.51,  99.90,  -0.03,  -0.34,
11/19 05Z,  -0.20,   2.11,  99.90,   1.57,  -0.34,
11/19 06Z,  -0.10,   4.20,  99.90,   3.77,  -0.34,
11/19 07Z,  -0.10,   6.28,  99.90,   5.85,  -0.34,
11/19 08Z,   0.00,   7.87,  99.90,   7.54,  -0.34,
11/19 09Z,   0.00,   8.63,  99.90,   8.30,  -0.34,  (max)
11/19 10Z,   0.00,   8.46,  99.90,   8.13,  -0.34,
11/19 11Z,   0.10,   7.51,  99.90,   7.28,  -0.34,
11/19 12Z,   0.20,   6.13,  99.90,   5.99,  -0.34,
11/19 13Z,   0.20,   4.77,  99.90,   4.64,  -0.34,
11/19 14Z,   0.30,   3.90,  99.90,   3.86,  -0.34,
11/19 15Z,   0.30,   3.80,  99.90,   3.77,  -0.34,  (min)
11/19 16Z,   0.30,   4.58,  99.90,   4.54,  -0.34,
11/19 17Z,   0.40,   6.05,  99.90,   6.12,  -0.34,
11/19 18Z,   0.50,   7.87,  99.90,   8.03,  -0.34,
11/19 19Z,   0.60,   9.52,  99.90,   9.79,  -0.34,
11/19 20Z,   0.80,  10.55,  99.90,  11.01,  -0.34,
11/19 21Z,   0.90,  10.60,  99.90,  11.16,  -0.34,  (max)
11/19 22Z,   0.90,   9.58,  99.90,  10.14,  -0.34,
11/19 23Z,   1.00,   7.63,  99.90,   8.29,  -0.34,
11/20 00Z,   1.00,   5.14,  99.90,   5.81,  -0.34,
11/20 01Z,   1.00,   2.64,  99.90,   3.30,  -0.34,
11/20 02Z,   1.00,   0.66,  99.90,   1.33,  -0.34,
11/20 03Z,   1.00,  -0.37,  99.90,   0.29,  -0.34,  (min)
11/20 04Z,   1.00,  -0.26,  99.90,   0.40,  -0.34,
11/20 05Z,   0.90,   0.92,  99.90,   1.49,  -0.34,
11/20 06Z,   0.90,   2.87,  99.90,   3.43,  -0.34,
11/20 07Z,   0.90,   5.10,  99.90,   5.66,  -0.34,
11/20 08Z,   0.90,   7.09,  99.90,   7.65,  -0.34,
11/20 09Z,   1.10,   8.41,  99.90,   9.17,  -0.34,
11/20 10Z,   1.20,   8.81,  99.90,   9.67,  -0.34,  (max)
11/20 11Z,   1.40,   8.30,  99.90,   9.37,  -0.34,
11/20 12Z,   1.50,   7.14,  99.90,   8.31,  -0.34,
11/20 13Z,   1.60,   5.74,  99.90,   7.01,  -0.34,
11/20 14Z,   1.70,   4.58,  99.90,   5.94,  -0.34,
11/20 15Z,   1.70,   4.04,  99.90,   5.40,  -0.34,  (min)
11/20 16Z,   1.60,   4.34,  99.90,   5.60,  -0.34,
11/20 17Z,   1.40,   5.44,  99.90,   6.51,  -0.34,
11/20 18Z,   1.20,   7.09,  99.90,   7.96,  -0.34,
11/20 19Z,   1.10,   8.85,  99.90,   9.61,  -0.34,
11/20 20Z,   1.10,  10.21,  99.90,  10.98,  -0.34,
11/20 21Z,   1.00,  10.76,  99.90,  11.43,  -0.34,  (max)
11/20 22Z,   1.10,  10.27,  99.90,  11.03,  -0.34,
11/20 23Z,   1.10,   8.74,  99.90,   9.51,  -0.34,
11/21 00Z,   1.20,   6.45,  99.90,   7.32,  -0.34,
11/21 01Z,   1.10,   3.87,  99.90,   4.64,  -0.34,
11/21 02Z,   1.00,   1.54,  99.90,   2.20,  -0.34,
11/21 03Z,   0.90,  -0.05,  99.90,   0.52,  -0.34,
11/21 04Z,   0.70,  -0.57,  99.90,  -0.20,  -0.34,  (min)
11/21 05Z,   0.70,   0.06,  99.90,   0.43,  -0.34,
11/21 06Z,   0.60,   1.65,  99.90,   1.92,  -0.34,
11/21 07Z,   0.60,   3.80,  99.90,   4.07,  -0.34,
11/21 08Z,   0.60,   6.00,  99.90,   6.26,  -0.34,
11/21 09Z,   0.60,   7.75,  99.90,   8.01,  -0.34,
11/21 10Z,   0.60,   8.70,  99.90,   8.97,  -0.34,
11/21 11Z,   0.60,   8.72,  99.90,   8.99,  -0.34,  (max)
11/21 12Z,   0.60,   7.93,  99.90,   8.20,  -0.34,