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
#Seattle, WA : 05/19/2025 09:20:48 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/17 18Z,   0.50,   4.53,   4.82,  99.90,  -0.21,
05/17 19Z,   0.50,   2.34,   2.54,  99.90,  -0.30,
05/17 20Z,   0.50,   0.32,   0.57,  99.90,  -0.25,
05/17 21Z,   0.50,  -1.05,  -0.52,  99.90,   0.03,  (min)
05/17 22Z,   0.50,  -1.31,  -0.46,  99.90,   0.35,
05/17 23Z,   0.50,  -0.29,   0.64,  99.90,   0.43,
05/18 00Z,   0.50,   1.73,   2.52,  99.90,   0.29,
05/18 01Z,   0.50,   4.25,   5.03,  99.90,   0.28,
05/18 02Z,   0.50,   6.78,   7.51,  99.90,   0.23,
05/18 03Z,   0.50,   8.95,   9.52,  99.90,   0.07,
05/18 04Z,   0.50,  10.45,  10.90,  99.90,  -0.05,
05/18 05Z,   0.60,  11.14,  11.49,  99.90,  -0.25,  (max)
05/18 06Z,   0.50,  11.11,  11.45,  99.90,  -0.16,
05/18 07Z,   0.50,  10.57,  10.94,  99.90,  -0.13,
05/18 08Z,   0.50,   9.71,  10.08,  99.90,  -0.13,
05/18 09Z,   0.50,   8.76,   9.05,  99.90,  -0.21,
05/18 10Z,   0.50,   8.02,   8.17,  99.90,  -0.35,
05/18 11Z,   0.50,   7.70,   7.72,  99.90,  -0.48,
05/18 12Z,   0.40,   7.79,   7.70,  99.90,  -0.49,  (min)
05/18 13Z,   0.40,   8.09,   8.01,  99.90,  -0.48,
05/18 14Z,   0.40,   8.38,   8.37,  99.90,  -0.41,
05/18 15Z,   0.40,   8.49,   8.53,  99.90,  -0.36,  (max)
05/18 16Z,   0.40,   8.25,   8.33,  99.90,  -0.32,
05/18 17Z,   0.30,   7.45,   7.43,  99.90,  -0.32,
05/18 18Z,   0.20,   6.03,   5.97,  99.90,  -0.26,
05/18 19Z,   0.20,   4.18,   4.13,  99.90,  -0.25,
05/18 20Z,   0.20,   2.18,   2.12,  99.90,  -0.26,
05/18 21Z,   0.20,   0.40,   0.44,  99.90,  -0.16,
05/18 22Z,   0.20,  -0.69,  -0.40,  99.90,   0.09,  (min)
05/18 23Z,   0.20,  -0.71,  -0.14,  99.90,   0.37,
05/19 00Z,   0.10,   0.45,   1.06,  99.90,   0.51,
05/19 01Z,   0.10,   2.47,   2.97,  99.90,   0.40,
05/19 02Z,   0.10,   4.88,   5.38,  99.90,   0.40,
05/19 03Z,   0.10,   7.26,   7.69,  99.90,   0.33,
05/19 04Z,   0.10,   9.27,   9.55,  99.90,   0.18,
05/19 05Z,   0.10,  10.60,  10.76,  99.90,   0.06,
05/19 06Z,   0.10,  11.14,  11.25,  99.90,   0.01,  (max)
05/19 07Z,   0.10,  10.99,  11.13,  99.90,   0.04,
05/19 08Z,   0.10,  10.33,  10.56,  99.90,   0.13,
05/19 09Z,   0.10,   9.38,   9.67,  99.90,   0.19,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/19 10Z,   0.10,   8.35,  99.90,   8.62,   0.17,
05/19 11Z,   0.10,   7.55,  99.90,   7.80,   0.15,
05/19 12Z,   0.10,   7.18,  99.90,   7.41,   0.13,  (min)
05/19 13Z,   0.10,   7.23,  99.90,   7.44,   0.11,
05/19 14Z,   0.10,   7.49,  99.90,   7.68,   0.09,
05/19 15Z,   0.10,   7.79,  99.90,   7.96,   0.07,
05/19 16Z,   0.20,   7.96,  99.90,   8.21,   0.05,  (max)
05/19 17Z,   0.20,   7.81,  99.90,   8.04,   0.03,
05/19 18Z,   0.20,   7.11,  99.90,   7.32,   0.01,
05/19 19Z,   0.20,   5.84,  99.90,   6.03,  -0.01,
05/19 20Z,   0.20,   4.18,  99.90,   4.35,  -0.03,
05/19 21Z,   0.20,   2.40,  99.90,   2.55,  -0.05,
05/19 22Z,   0.20,   0.85,  99.90,   1.00,  -0.05,
05/19 23Z,   0.20,  -0.04,  99.90,   0.11,  -0.05,  (min)
05/20 00Z,   0.30,   0.08,  99.90,   0.33,  -0.05,
05/20 01Z,   0.30,   1.27,  99.90,   1.52,  -0.05,
05/20 02Z,   0.30,   3.23,  99.90,   3.48,  -0.05,
05/20 03Z,   0.30,   5.52,  99.90,   5.77,  -0.05,
05/20 04Z,   0.30,   7.77,  99.90,   8.02,  -0.05,
05/20 05Z,   0.30,   9.63,  99.90,   9.88,  -0.05,
05/20 06Z,   0.30,  10.82,  99.90,  11.07,  -0.05,
05/20 07Z,   0.30,  11.20,  99.90,  11.45,  -0.05,  (max)
05/20 08Z,   0.20,  10.87,  99.90,  11.02,  -0.05,
05/20 09Z,   0.20,  10.03,  99.90,  10.18,  -0.05,
05/20 10Z,   0.20,   8.87,  99.90,   9.02,  -0.05,
05/20 11Z,   0.20,   7.65,  99.90,   7.80,  -0.05,
05/20 12Z,   0.20,   6.70,  99.90,   6.85,  -0.05,
05/20 13Z,   0.20,   6.24,  99.90,   6.39,  -0.05,
05/20 14Z,   0.10,   6.27,  99.90,   6.32,  -0.05,  (min)
05/20 15Z,   0.10,   6.59,  99.90,   6.64,  -0.05,
05/20 16Z,   0.10,   7.04,  99.90,   7.09,  -0.05,
05/20 17Z,   0.10,   7.43,  99.90,   7.48,  -0.05,
05/20 18Z,   0.10,   7.50,  99.90,   7.55,  -0.05,  (max)
05/20 19Z,   0.10,   7.03,  99.90,   7.08,  -0.05,
05/20 20Z,   0.10,   5.99,  99.90,   6.04,  -0.05,
05/20 21Z,   0.10,   4.57,  99.90,   4.62,  -0.05,
05/20 22Z,   0.00,   3.02,  99.90,   2.97,  -0.05,
05/20 23Z,   0.00,   1.65,  99.90,   1.60,  -0.05,
05/21 00Z,   0.00,   0.88,  99.90,   0.83,  -0.05,  (min)
05/21 01Z,   0.00,   1.06,  99.90,   1.01,  -0.05,
05/21 02Z,   0.00,   2.21,  99.90,   2.16,  -0.05,
05/21 03Z,   0.00,   4.07,  99.90,   4.02,  -0.05,
05/21 04Z,   0.00,   6.24,  99.90,   6.19,  -0.05,
05/21 05Z,   0.00,   8.38,  99.90,   8.33,  -0.05,
05/21 06Z,   0.00,  10.12,  99.90,  10.07,  -0.05,
05/21 07Z,   0.00,  11.12,  99.90,  11.07,  -0.05,
05/21 08Z,   0.00,  11.27,  99.90,  11.22,  -0.05,  (max)
05/21 09Z,   0.00,  10.68,  99.90,  10.63,  -0.05,
05/21 10Z,   0.00,   9.53,  99.90,   9.48,  -0.05,
05/21 11Z,   0.00,   8.04,  99.90,   7.99,  -0.05,
05/21 12Z,   0.00,   6.53,  99.90,   6.48,  -0.05,
05/21 13Z,   0.00,   5.38,  99.90,   5.33,  -0.05,
05/21 14Z,   0.00,   4.85,  99.90,   4.80,  -0.05,  (min)
05/21 15Z,   0.00,   4.95,  99.90,   4.90,  -0.05,
05/21 16Z,   0.00,   5.49,  99.90,   5.44,  -0.05,
05/21 17Z,   0.00,   6.27,  99.90,   6.22,  -0.05,
05/21 18Z,   0.00,   7.04,  99.90,   6.99,  -0.05,
05/21 19Z,   0.00,   7.46,  99.90,   7.41,  -0.05,  (max)
05/21 20Z,   0.00,   7.30,  99.90,   7.25,  -0.05,
05/21 21Z,   0.00,   6.54,  99.90,   6.49,  -0.05,
05/21 22Z,   0.00,   5.37,  99.90,   5.32,  -0.05,
05/21 23Z,   0.00,   3.99,  99.90,   3.94,  -0.05,
05/22 00Z,   0.00,   2.74,  99.90,   2.69,  -0.05,
05/22 01Z,   0.00,   2.02,  99.90,   1.97,  -0.05,  (min)
05/22 02Z,   0.00,   2.18,  99.90,   2.13,  -0.05,
05/22 03Z,   0.00,   3.26,  99.90,   3.21,  -0.05,
05/22 04Z,   0.00,   5.02,  99.90,   4.97,  -0.05,
05/22 05Z,   0.00,   7.11,  99.90,   7.06,  -0.05,
05/22 06Z,   0.00,   9.14,  99.90,   9.09,  -0.05,
05/22 07Z,   0.00,  10.70,  99.90,  10.65,  -0.05,
05/22 08Z,   0.00,  11.45,  99.90,  11.40,  -0.05,  (max)
05/22 09Z,   0.00,  11.27,  99.90,  11.22,  -0.05,
05/22 10Z,   0.00,  10.28,  99.90,  10.23,  -0.05,
05/22 11Z,   0.00,   8.70,  99.90,   8.65,  -0.05,
05/22 12Z,   0.00,   6.78,  99.90,   6.73,  -0.05,
05/22 13Z,   0.00,   4.92,  99.90,   4.87,  -0.05,
05/22 14Z,   0.00,   3.60,  99.90,   3.55,  -0.05,
05/22 15Z,   0.00,   3.11,  99.90,   3.06,  -0.05,  (min)
05/22 16Z,   0.00,   3.44,  99.90,   3.39,  -0.05,
05/22 17Z,   0.00,   4.38,  99.90,   4.33,  -0.05,
05/22 18Z,   0.00,   5.66,  99.90,   5.61,  -0.05,
05/22 19Z,   0.00,   6.92,  99.90,   6.87,  -0.05,
05/22 20Z,   0.00,   7.75,  99.90,   7.70,  -0.05,
05/22 21Z,   0.00,   7.93,  99.90,   7.88,  -0.05,  (max)
05/22 22Z,   0.00,   7.44,  99.90,   7.39,  -0.05,
05/22 23Z,   0.00,   6.47,  99.90,   6.42,  -0.05,
05/23 00Z,   0.00,   5.22,  99.90,   5.17,  -0.05,
05/23 01Z,  99.90,   4.00,  99.90,  99.90,  -0.05,
05/23 02Z,  99.90,   3.27,  99.90,  99.90,  -0.05,
05/23 03Z,  99.90,   3.38,  99.90,  99.90,  -0.05,
05/23 04Z,  99.90,   4.40,  99.90,  99.90,  -0.05,
05/23 05Z,  99.90,   6.09,  99.90,  99.90,  -0.05,
05/23 06Z,  99.90,   8.09,  99.90,  99.90,  -0.05,