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
#Seldovia, AK : 10/17/2026 11:23:01 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/15 12Z,   0.80,  12.60,  12.94,  99.90,  -0.46,
10/15 13Z,   0.80,  14.99,  15.39,  99.90,  -0.40,
10/15 14Z,   0.70,  15.88,  16.34,  99.90,  -0.24,  (max)
10/15 15Z,   0.80,  15.12,  15.81,  99.90,  -0.11,
10/15 16Z,   1.00,  13.02,  14.02,  99.90,  -0.00,
10/15 17Z,   1.30,  10.24,  11.33,  99.90,  -0.21,
10/15 18Z,   1.20,   7.59,   8.58,  99.90,  -0.21,
10/15 19Z,   1.20,   5.87,   6.82,  99.90,  -0.25,
10/15 20Z,   1.30,   5.75,   6.79,  99.90,  -0.26,  (min)
10/15 21Z,   1.30,   7.37,   8.38,  99.90,  -0.29,
10/15 22Z,   1.20,  10.11,  10.81,  99.90,  -0.50,
10/15 23Z,   1.10,  13.07,  13.46,  99.90,  -0.71,
10/16 00Z,   1.40,  15.55,  16.01,  99.90,  -0.94,
10/16 01Z,   1.20,  16.96,  17.46,  99.90,  -0.70,  (max)
10/16 02Z,   1.10,  16.83,  17.38,  99.90,  -0.55,
10/16 03Z,   0.90,  15.12,  15.78,  99.90,  -0.24,
10/16 04Z,   0.70,  12.19,  13.00,  99.90,   0.11,
10/16 05Z,   0.60,   8.69,   9.70,  99.90,   0.41,
10/16 06Z,   0.90,   5.39,   6.24,  99.90,  -0.05,
10/16 07Z,   0.80,   2.93,   3.61,  99.90,  -0.12,
10/16 08Z,   0.70,   1.85,   2.56,  99.90,   0.01,  (min)
10/16 09Z,   0.60,   2.44,   3.10,  99.90,   0.06,
10/16 10Z,   0.40,   4.42,   4.91,  99.90,   0.09,
10/16 11Z,   0.30,   7.09,   7.45,  99.90,   0.06,
10/16 12Z,   0.80,   9.89,  10.37,  99.90,  -0.32,
10/16 13Z,   0.70,  12.36,  12.97,  99.90,  -0.09,
10/16 14Z,   0.60,  13.98,  14.52,  99.90,  -0.06,
10/16 15Z,   0.50,  14.38,  14.95,  99.90,   0.07,  (max)
10/16 16Z,   0.40,  13.55,  14.14,  99.90,   0.19,
10/16 17Z,   0.40,  11.82,  12.44,  99.90,   0.22,
10/16 18Z,   0.90,   9.77,  10.39,  99.90,  -0.28,
10/16 19Z,   0.80,   8.01,   8.54,  99.90,  -0.27,
10/16 20Z,   0.80,   7.10,   7.57,  99.90,  -0.33,  (min)
10/16 21Z,   0.60,   7.47,   7.88,  99.90,  -0.19,
10/16 22Z,   0.50,   9.07,   9.34,  99.90,  -0.23,
10/16 23Z,   0.40,  11.29,  11.40,  99.90,  -0.29,
10/17 00Z,   0.80,  13.41,  13.41,  99.90,  -0.80,
10/17 01Z,   0.70,  14.99,  15.01,  99.90,  -0.68,
10/17 02Z,   0.50,  15.63,  15.82,  99.90,  -0.31,  (max)
10/17 03Z,   0.40,  15.03,  15.31,  99.90,  -0.12,
10/17 04Z,   0.20,  13.27,  13.56,  99.90,   0.09,
10/17 05Z,   0.10,  10.72,  11.16,  99.90,   0.34,
10/17 06Z,   0.00,   7.98,   8.47,  99.90,   0.49,
10/17 07Z,   0.00,   5.59,   5.88,  99.90,   0.29,
10/17 08Z,   0.00,   3.97,   4.14,  99.90,   0.17,
10/17 09Z,   0.10,   3.43,   3.62,  99.90,   0.09,  (min)
10/17 10Z,   0.30,   4.12,   4.22,  99.90,  -0.20,
10/17 11Z,   0.40,   5.73,   5.66,  99.90,  -0.47,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/17 12Z,   0.50,   7.72,  99.90,   7.77,  -0.45,
10/17 13Z,   0.50,   9.76,  99.90,   9.84,  -0.42,
10/17 14Z,   0.40,  11.59,  99.90,  11.59,  -0.40,
10/17 15Z,   0.20,  12.80,  99.90,  12.63,  -0.37,
10/17 16Z,   0.00,  13.12,  99.90,  12.77,  -0.34,  (max)
10/17 17Z,  -0.10,  12.55,  99.90,  12.13,  -0.32,
10/17 18Z,  -0.10,  11.37,  99.90,  10.98,  -0.29,
10/17 19Z,   0.00,  10.02,  99.90,   9.75,  -0.27,
10/17 20Z,   0.10,   8.89,  99.90,   8.75,  -0.24,
10/17 21Z,   0.40,   8.37,  99.90,   8.55,  -0.21,  (min)
10/17 22Z,   0.60,   8.75,  99.90,   9.16,  -0.19,
10/17 23Z,   0.60,   9.97,  99.90,  10.41,  -0.16,
10/18 00Z,   0.60,  11.49,  99.90,  11.93,  -0.16,
10/18 01Z,   0.40,  12.87,  99.90,  13.11,  -0.16,
10/18 02Z,   0.30,  13.85,  99.90,  13.99,  -0.16,
10/18 03Z,   0.20,  14.14,  99.90,  14.18,  -0.16,  (max)
10/18 04Z,   0.10,  13.54,  99.90,  13.47,  -0.16,
10/18 05Z,   0.00,  12.10,  99.90,  11.94,  -0.16,
10/18 06Z,   0.00,  10.16,  99.90,   9.99,  -0.16,
10/18 07Z,   0.00,   8.14,  99.90,   7.98,  -0.16,
10/18 08Z,   0.00,   6.40,  99.90,   6.24,  -0.16,
10/18 09Z,   0.00,   5.18,  99.90,   5.02,  -0.16,
10/18 10Z,   0.00,   4.72,  99.90,   4.55,  -0.16,  (min)
10/18 11Z,   0.00,   5.15,  99.90,   4.98,  -0.16,
10/18 12Z,   0.00,   6.22,  99.90,   6.06,  -0.16,
10/18 13Z,   0.00,   7.60,  99.90,   7.43,  -0.16,
10/18 14Z,   0.00,   9.17,  99.90,   9.00,  -0.16,
10/18 15Z,   0.00,  10.74,  99.90,  10.58,  -0.16,
10/18 16Z,   0.00,  11.95,  99.90,  11.79,  -0.16,
10/18 17Z,   0.00,  12.50,  99.90,  12.34,  -0.16,  (max)
10/18 18Z,  -0.10,  12.35,  99.90,  12.09,  -0.16,
10/18 19Z,  -0.10,  11.67,  99.90,  11.41,  -0.16,
10/18 20Z,  -0.10,  10.74,  99.90,  10.47,  -0.16,
10/18 21Z,   0.00,   9.81,  99.90,   9.64,  -0.16,
10/18 22Z,   0.00,   9.20,  99.90,   9.04,  -0.16,
10/18 23Z,  -0.10,   9.24,  99.90,   8.98,  -0.16,  (min)
10/19 00Z,  -0.10,   9.90,  99.90,   9.64,  -0.16,
10/19 01Z,  -0.20,  10.82,  99.90,  10.45,  -0.16,
10/19 02Z,  -0.30,  11.75,  99.90,  11.29,  -0.16,
10/19 03Z,  -0.40,  12.56,  99.90,  12.00,  -0.16,
10/19 04Z,  -0.40,  12.97,  99.90,  12.40,  -0.16,  (max)
10/19 05Z,  -0.40,  12.71,  99.90,  12.15,  -0.16,
10/19 06Z,  -0.40,  11.79,  99.90,  11.23,  -0.16,
10/19 07Z,  -0.30,  10.42,  99.90,   9.95,  -0.16,
10/19 08Z,  -0.20,   8.86,  99.90,   8.50,  -0.16,
10/19 09Z,  -0.10,   7.36,  99.90,   7.10,  -0.16,
10/19 10Z,  -0.10,   6.09,  99.90,   5.82,  -0.16,
10/19 11Z,   0.00,   5.35,  99.90,   5.19,  -0.16,
10/19 12Z,  -0.10,   5.36,  99.90,   5.09,  -0.16,  (min)
10/19 13Z,  -0.10,   5.97,  99.90,   5.71,  -0.16,
10/19 14Z,  -0.20,   7.05,  99.90,   6.69,  -0.16,
10/19 15Z,  -0.20,   8.57,  99.90,   8.21,  -0.16,
10/19 16Z,  -0.20,  10.31,  99.90,   9.95,  -0.16,
10/19 17Z,  -0.10,  11.82,  99.90,  11.55,  -0.16,
10/19 18Z,  -0.10,  12.73,  99.90,  12.47,  -0.16,
10/19 19Z,   0.00,  12.92,  99.90,  12.76,  -0.16,  (max)
10/19 20Z,   0.00,  12.44,  99.90,  12.27,  -0.16,
10/19 21Z,   0.10,  11.48,  99.90,  11.42,  -0.16,
10/19 22Z,   0.10,  10.29,  99.90,  10.22,  -0.16,
10/19 23Z,   0.20,   9.23,  99.90,   9.27,  -0.16,
10/20 00Z,   0.10,   8.76,  99.90,   8.69,  -0.16,  (min)
10/20 01Z,   0.10,   8.93,  99.90,   8.87,  -0.16,
10/20 02Z,   0.10,   9.54,  99.90,   9.48,  -0.16,
10/20 03Z,   0.00,  10.48,  99.90,  10.32,  -0.16,
10/20 04Z,   0.00,  11.58,  99.90,  11.42,  -0.16,
10/20 05Z,   0.00,  12.45,  99.90,  12.29,  -0.16,
10/20 06Z,   0.10,  12.72,  99.90,  12.66,  -0.16,  (max)
10/20 07Z,   0.30,  12.28,  99.90,  12.42,  -0.16,
10/20 08Z,   0.40,  11.22,  99.90,  11.45,  -0.16,
10/20 09Z,   0.50,   9.73,  99.90,  10.06,  -0.16,
10/20 10Z,   0.50,   8.02,  99.90,   8.35,  -0.16,
10/20 11Z,   0.40,   6.35,  99.90,   6.59,  -0.16,
10/20 12Z,   0.30,   5.20,  99.90,   5.33,  -0.16,
10/20 13Z,   0.10,   4.87,  99.90,   4.81,  -0.16,  (min)
10/20 14Z,   0.00,   5.34,  99.90,   5.18,  -0.16,
10/20 15Z,   0.00,   6.55,  99.90,   6.39,  -0.16,
10/20 16Z,   0.00,   8.45,  99.90,   8.29,  -0.16,
10/20 17Z,   0.30,  10.66,  99.90,  10.80,  -0.16,
10/20 18Z,   0.40,  12.58,  99.90,  12.82,  -0.16,
10/20 19Z,   0.50,  13.75,  99.90,  14.09,  -0.16,
10/20 20Z,   0.80,  13.96,  99.90,  14.60,  -0.16,  (max)
10/20 21Z,   0.90,  13.24,  99.90,  13.98,  -0.16,
10/20 22Z,   1.00,  11.80,  99.90,  12.64,  -0.16,
10/20 23Z,   1.00,   9.97,  99.90,  10.81,  -0.16,
10/21 00Z,   1.00,   8.30,  99.90,   9.13,  -0.16,