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
#Port Townsend, WA : 05/21/2026 16:21:12 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/20 00Z,   0.00,   3.67,   3.34,  99.90,  -0.33,
05/20 01Z,   0.00,   5.87,   5.66,  99.90,  -0.21,
05/20 02Z,   0.00,   7.73,   7.33,  99.90,  -0.40,
05/20 03Z,   0.00,   8.91,   8.35,  99.90,  -0.56,
05/20 04Z,   0.00,   9.30,   8.73,  99.90,  -0.57,  (max)
05/20 05Z,   0.00,   9.00,   8.72,  99.90,  -0.28,
05/20 06Z,   0.00,   8.28,   8.13,  99.90,  -0.15,
05/20 07Z,   0.00,   7.55,   7.38,  99.90,  -0.17,
05/20 08Z,   0.00,   7.17,   6.96,  99.90,  -0.21,  (min)
05/20 09Z,   0.00,   7.21,   7.02,  99.90,  -0.19,
05/20 10Z,   0.00,   7.46,   7.26,  99.90,  -0.20,
05/20 11Z,   0.00,   7.72,   7.57,  99.90,  -0.15,
05/20 12Z,   0.00,   7.93,   7.88,  99.90,  -0.05,
05/20 13Z,   0.00,   8.00,   8.01,  99.90,   0.01,  (max)
05/20 14Z,   0.00,   7.66,   7.67,  99.90,   0.01,
05/20 15Z,   0.00,   6.62,   6.56,  99.90,  -0.06,
05/20 16Z,   0.00,   4.82,   4.69,  99.90,  -0.13,
05/20 17Z,   0.00,   2.52,   2.26,  99.90,  -0.26,
05/20 18Z,   0.00,   0.15,  -0.14,  99.90,  -0.29,
05/20 19Z,   0.00,  -1.75,  -2.00,  99.90,  -0.25,
05/20 20Z,   0.00,  -2.71,  -2.99,  99.90,  -0.28,  (min)
05/20 21Z,   0.00,  -2.56,  -2.88,  99.90,  -0.32,
05/20 22Z,   0.00,  -1.53,  -1.78,  99.90,  -0.25,
05/20 23Z,   0.00,   0.04,  -0.30,  99.90,  -0.34,
05/21 00Z,   0.00,   1.92,   1.58,  99.90,  -0.34,
05/21 01Z,   0.00,   4.02,   3.76,  99.90,  -0.26,
05/21 02Z,   0.00,   6.12,   5.97,  99.90,  -0.15,
05/21 03Z,   0.00,   7.83,   7.53,  99.90,  -0.30,
05/21 04Z,   0.00,   8.88,   8.42,  99.90,  -0.46,
05/21 05Z,   0.10,   9.17,   8.79,  99.90,  -0.48,  (max)
05/21 06Z,   0.00,   8.82,   8.65,  99.90,  -0.17,
05/21 07Z,   0.00,   8.08,   8.04,  99.90,  -0.04,
05/21 08Z,   0.00,   7.32,   7.15,  99.90,  -0.17,
05/21 09Z,   0.00,   6.87,   6.72,  99.90,  -0.15,
05/21 10Z,   0.00,   6.78,   6.48,  99.90,  -0.30,  (min)
05/21 11Z,   0.00,   6.88,   6.65,  99.90,  -0.23,
05/21 12Z,   0.00,   7.04,   6.86,  99.90,  -0.18,
05/21 13Z,   0.00,   7.21,   7.15,  99.90,  -0.06,
05/21 14Z,   0.10,   7.29,   7.19,  99.90,  -0.20,  (max)
05/21 15Z,   0.00,   6.99,   6.85,  99.90,  -0.14,
05/21 16Z,   0.00,   6.05,   5.98,  99.90,  -0.07,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/21 17Z,   0.00,   4.48,  99.90,   4.39,  -0.09,
05/21 18Z,   0.00,   2.50,  99.90,   2.40,  -0.10,
05/21 19Z,   0.00,   0.49,  99.90,   0.38,  -0.11,
05/21 20Z,   0.00,  -1.08,  99.90,  -1.20,  -0.12,
05/21 21Z,   0.00,  -1.83,  99.90,  -1.96,  -0.13,  (min)
05/21 22Z,   0.10,  -1.62,  99.90,  -1.67,  -0.14,
05/21 23Z,   0.10,  -0.67,  99.90,  -0.73,  -0.16,
05/22 00Z,   0.10,   0.75,  99.90,   0.68,  -0.17,
05/22 01Z,   0.10,   2.50,  99.90,   2.42,  -0.18,
05/22 02Z,   0.10,   4.46,  99.90,   4.37,  -0.19,
05/22 03Z,   0.20,   6.39,  99.90,   6.39,  -0.20,
05/22 04Z,   0.20,   7.93,  99.90,   7.92,  -0.21,
05/22 05Z,   0.20,   8.82,  99.90,   8.81,  -0.21,
05/22 06Z,   0.30,   9.01,  99.90,   9.09,  -0.21,  (max)
05/22 07Z,   0.30,   8.57,  99.90,   8.66,  -0.21,
05/22 08Z,   0.30,   7.75,  99.90,   7.83,  -0.21,
05/22 09Z,   0.20,   6.89,  99.90,   6.88,  -0.21,
05/22 10Z,   0.20,   6.30,  99.90,   6.29,  -0.21,
05/22 11Z,   0.20,   6.05,  99.90,   6.03,  -0.21,
05/22 12Z,   0.20,   6.00,  99.90,   5.99,  -0.21,  (min)
05/22 13Z,   0.20,   6.09,  99.90,   6.08,  -0.21,
05/22 14Z,   0.20,   6.28,  99.90,   6.26,  -0.21,
05/22 15Z,   0.20,   6.42,  99.90,   6.41,  -0.21,  (max)
05/22 16Z,   0.20,   6.25,  99.90,   6.23,  -0.21,
05/22 17Z,   0.20,   5.53,  99.90,   5.52,  -0.21,
05/22 18Z,   0.20,   4.30,  99.90,   4.29,  -0.21,
05/22 19Z,   0.20,   2.74,  99.90,   2.72,  -0.21,
05/22 20Z,   0.20,   1.13,  99.90,   1.12,  -0.21,
05/22 21Z,   0.20,  -0.13,  99.90,  -0.14,  -0.21,
05/22 22Z,   0.30,  -0.71,  99.90,  -0.62,  -0.21,  (min)
05/22 23Z,   0.20,  -0.50,  99.90,  -0.51,  -0.21,
05/23 00Z,   0.20,   0.35,  99.90,   0.33,  -0.21,
05/23 01Z,   0.20,   1.62,  99.90,   1.60,  -0.21,
05/23 02Z,   0.30,   3.21,  99.90,   3.30,  -0.21,
05/23 03Z,   0.30,   5.01,  99.90,   5.10,  -0.21,
05/23 04Z,   0.30,   6.75,  99.90,   6.83,  -0.21,
05/23 05Z,   0.30,   8.07,  99.90,   8.16,  -0.21,
05/23 06Z,   0.30,   8.78,  99.90,   8.87,  -0.21,
05/23 07Z,   0.30,   8.82,  99.90,   8.90,  -0.21,  (max)
05/23 08Z,   0.30,   8.24,  99.90,   8.33,  -0.21,
05/23 09Z,   0.30,   7.26,  99.90,   7.34,  -0.21,
05/23 10Z,   0.30,   6.22,  99.90,   6.31,  -0.21,
05/23 11Z,   0.30,   5.46,  99.90,   5.54,  -0.21,
05/23 12Z,   0.30,   5.04,  99.90,   5.12,  -0.21,
05/23 13Z,   0.30,   4.89,  99.90,   4.97,  -0.21,  (min)
05/23 14Z,   0.30,   4.96,  99.90,   5.05,  -0.21,
05/23 15Z,   0.30,   5.22,  99.90,   5.30,  -0.21,
05/23 16Z,   0.30,   5.49,  99.90,   5.58,  -0.21,
05/23 17Z,   0.30,   5.53,  99.90,   5.61,  -0.21,  (max)
05/23 18Z,   0.20,   5.14,  99.90,   5.12,  -0.21,
05/23 19Z,   0.20,   4.33,  99.90,   4.32,  -0.21,
05/23 20Z,   0.20,   3.22,  99.90,   3.21,  -0.21,
05/23 21Z,   0.20,   2.02,  99.90,   2.01,  -0.21,
05/23 22Z,   0.30,   1.02,  99.90,   1.11,  -0.21,
05/23 23Z,   0.30,   0.57,  99.90,   0.65,  -0.21,  (min)
05/24 00Z,   0.30,   0.76,  99.90,   0.85,  -0.21,
05/24 01Z,   0.30,   1.50,  99.90,   1.58,  -0.21,
05/24 02Z,   0.40,   2.62,  99.90,   2.81,  -0.21,
05/24 03Z,   0.50,   4.06,  99.90,   4.34,  -0.21,
05/24 04Z,   0.50,   5.67,  99.90,   5.95,  -0.21,
05/24 05Z,   0.40,   7.17,  99.90,   7.36,  -0.21,
05/24 06Z,   0.40,   8.25,  99.90,   8.44,  -0.21,
05/24 07Z,   0.40,   8.74,  99.90,   8.92,  -0.21,  (max)
05/24 08Z,   0.30,   8.56,  99.90,   8.65,  -0.21,
05/24 09Z,   0.30,   7.76,  99.90,   7.85,  -0.21,
05/24 10Z,   0.20,   6.54,  99.90,   6.53,  -0.21,
05/24 11Z,   0.20,   5.29,  99.90,   5.28,  -0.21,
05/24 12Z,   0.30,   4.35,  99.90,   4.43,  -0.21,
05/24 13Z,   0.20,   3.82,  99.90,   3.80,  -0.21,
05/24 14Z,   0.20,   3.64,  99.90,   3.62,  -0.21,  (min)
05/24 15Z,   0.20,   3.77,  99.90,   3.76,  -0.21,
05/24 16Z,   0.20,   4.17,  99.90,   4.15,  -0.21,
05/24 17Z,   0.20,   4.64,  99.90,   4.63,  -0.21,
05/24 18Z,   0.20,   4.96,  99.90,   4.95,  -0.21,  (max)
05/24 19Z,   0.10,   4.96,  99.90,   4.85,  -0.21,
05/24 20Z,   0.10,   4.61,  99.90,   4.50,  -0.21,
05/24 21Z,   0.20,   3.95,  99.90,   3.93,  -0.21,
05/24 22Z,   0.20,   3.08,  99.90,   3.06,  -0.21,
05/24 23Z,   0.20,   2.29,  99.90,   2.28,  -0.21,
05/25 00Z,   0.20,   1.91,  99.90,   1.90,  -0.21,  (min)
05/25 01Z,   0.20,   2.08,  99.90,   2.07,  -0.21,
05/25 02Z,   0.30,   2.73,  99.90,   2.81,  -0.21,
05/25 03Z,   0.30,   3.72,  99.90,   3.80,  -0.21,
05/25 04Z,   0.30,   4.98,  99.90,   5.07,  -0.21,
05/25 05Z,   0.30,   6.37,  99.90,   6.46,  -0.21,
05/25 06Z,   0.30,   7.61,  99.90,   7.69,  -0.21,
05/25 07Z,  99.90,   8.41,  99.90,  99.90,  -0.21,
05/25 08Z,  99.90,   8.62,  99.90,  99.90,  -0.21,
05/25 09Z,  99.90,   8.16,  99.90,  99.90,  -0.21,
05/25 10Z,  99.90,   7.05,  99.90,  99.90,  -0.21,
05/25 11Z,  99.90,   5.56,  99.90,  99.90,  -0.21,
05/25 12Z,  99.90,   4.10,  99.90,  99.90,  -0.21,