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 : 05/21/2025 02:20:55 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/19 06Z,  -0.10,   5.03,   5.05,  99.90,   0.12,
05/19 07Z,  -0.10,   4.54,   4.54,  99.90,   0.10,  (min)
05/19 08Z,  -0.20,   4.53,   4.58,  99.90,   0.25,
05/19 09Z,  -0.10,   5.01,   5.01,  99.90,   0.10,
05/19 10Z,  -0.10,   5.88,   5.92,  99.90,   0.14,
05/19 11Z,   0.00,   6.90,   6.96,  99.90,   0.06,
05/19 12Z,   0.00,   7.77,   7.85,  99.90,   0.08,
05/19 13Z,   0.00,   8.21,   8.26,  99.90,   0.05,  (max)
05/19 14Z,   0.00,   8.03,   8.15,  99.90,   0.12,
05/19 15Z,   0.00,   7.18,   7.33,  99.90,   0.15,
05/19 16Z,   0.00,   5.77,   5.98,  99.90,   0.21,
05/19 17Z,   0.00,   4.05,   4.30,  99.90,   0.25,
05/19 18Z,   0.00,   2.36,   2.70,  99.90,   0.34,
05/19 19Z,   0.00,   1.02,   1.38,  99.90,   0.36,
05/19 20Z,   0.00,   0.32,   0.70,  99.90,   0.38,  (min)
05/19 21Z,   0.00,   0.39,   0.80,  99.90,   0.41,
05/19 22Z,   0.10,   1.18,   1.55,  99.90,   0.27,
05/19 23Z,   0.10,   2.54,   2.78,  99.90,   0.14,
05/20 00Z,   0.00,   4.14,   4.32,  99.90,   0.18,
05/20 01Z,   0.00,   5.67,   5.78,  99.90,   0.11,
05/20 02Z,   0.10,   6.81,   6.83,  99.90,  -0.08,
05/20 03Z,   0.10,   7.38,   7.41,  99.90,  -0.07,  (max)
05/20 04Z,   0.10,   7.32,   7.37,  99.90,  -0.05,
05/20 05Z,   0.10,   6.75,   6.78,  99.90,  -0.07,
05/20 06Z,   0.00,   5.87,   5.90,  99.90,   0.03,
05/20 07Z,   0.00,   4.99,   5.09,  99.90,   0.10,
05/20 08Z,   0.00,   4.36,   4.44,  99.90,   0.08,
05/20 09Z,   0.00,   4.18,   4.25,  99.90,   0.07,  (min)
05/20 10Z,   0.00,   4.51,   4.53,  99.90,   0.02,
05/20 11Z,   0.10,   5.25,   5.21,  99.90,  -0.14,
05/20 12Z,   0.00,   6.19,   6.08,  99.90,  -0.11,
05/20 13Z,   0.00,   7.06,   6.90,  99.90,  -0.16,
05/20 14Z,   0.00,   7.57,   7.36,  99.90,  -0.21,
05/20 15Z,   0.00,   7.52,   7.37,  99.90,  -0.15,  (max)
05/20 16Z,   0.00,   6.85,   6.67,  99.90,  -0.18,
05/20 17Z,   0.00,   5.64,   5.50,  99.90,  -0.14,
05/20 18Z,  -0.10,   4.09,   3.96,  99.90,  -0.03,
05/20 19Z,  -0.10,   2.54,   2.53,  99.90,   0.09,
05/20 20Z,  -0.10,   1.30,   1.28,  99.90,   0.08,
05/20 21Z,  -0.10,   0.65,   0.63,  99.90,   0.08,
05/20 22Z,  -0.10,   0.75,   0.62,  99.90,  -0.03,  (min)
05/20 23Z,   0.00,   1.57,   1.35,  99.90,  -0.22,
05/21 00Z,   0.00,   2.94,   2.69,  99.90,  -0.25,
05/21 01Z,  -0.10,   4.58,   4.22,  99.90,  -0.26,
05/21 02Z,  -0.10,   6.15,   5.69,  99.90,  -0.36,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/21 03Z,  -0.20,   7.32,  99.90,   6.78,  -0.33,
05/21 04Z,  -0.20,   7.87,  99.90,   7.36,  -0.30,  (max)
05/21 05Z,  -0.20,   7.73,  99.90,   7.26,  -0.28,
05/21 06Z,  -0.20,   7.00,  99.90,   6.55,  -0.25,
05/21 07Z,  -0.20,   5.91,  99.90,   5.49,  -0.22,
05/21 08Z,  -0.20,   4.75,  99.90,   4.36,  -0.19,
05/21 09Z,  -0.30,   3.84,  99.90,   3.38,  -0.17,
05/21 10Z,  -0.30,   3.42,  99.90,   2.98,  -0.14,  (min)
05/21 11Z,  -0.30,   3.57,  99.90,   3.16,  -0.11,
05/21 12Z,  -0.30,   4.25,  99.90,   3.87,  -0.08,
05/21 13Z,  -0.30,   5.25,  99.90,   4.89,  -0.05,
05/21 14Z,  -0.40,   6.28,  99.90,   5.85,  -0.03,
05/21 15Z,  -0.40,   7.02,  99.90,   6.59,  -0.03,
05/21 16Z,  -0.40,   7.24,  99.90,   6.81,  -0.03,  (max)
05/21 17Z,  -0.40,   6.81,  99.90,   6.38,  -0.03,
05/21 18Z,  -0.40,   5.79,  99.90,   5.36,  -0.03,
05/21 19Z,  -0.40,   4.37,  99.90,   3.94,  -0.03,
05/21 20Z,  -0.40,   2.87,  99.90,   2.44,  -0.03,
05/21 21Z,  -0.40,   1.65,  99.90,   1.22,  -0.03,
05/21 22Z,  -0.40,   1.00,  99.90,   0.57,  -0.03,  (min)
05/21 23Z,  -0.40,   1.11,  99.90,   0.68,  -0.03,
05/22 00Z,  -0.40,   1.99,  99.90,   1.56,  -0.03,
05/22 01Z,  -0.40,   3.46,  99.90,   3.03,  -0.03,
05/22 02Z,  -0.40,   5.22,  99.90,   4.79,  -0.03,
05/22 03Z,  -0.40,   6.88,  99.90,   6.46,  -0.03,
05/22 04Z,  -0.40,   8.09,  99.90,   7.66,  -0.03,
05/22 05Z,  -0.40,   8.58,  99.90,   8.16,  -0.03,  (max)
05/22 06Z,  -0.40,   8.27,  99.90,   7.84,  -0.03,
05/22 07Z,  -0.30,   7.24,  99.90,   6.92,  -0.03,
05/22 08Z,  -0.30,   5.77,  99.90,   5.45,  -0.03,
05/22 09Z,  -0.30,   4.22,  99.90,   3.89,  -0.03,
05/22 10Z,  -0.30,   2.95,  99.90,   2.62,  -0.03,
05/22 11Z,  -0.30,   2.27,  99.90,   1.94,  -0.03,  (min)
05/22 12Z,  -0.20,   2.31,  99.90,   2.09,  -0.03,
05/22 13Z,  -0.20,   3.05,  99.90,   2.82,  -0.03,
05/22 14Z,  -0.20,   4.25,  99.90,   4.02,  -0.03,
05/22 15Z,  -0.20,   5.58,  99.90,   5.36,  -0.03,
05/22 16Z,  -0.30,   6.68,  99.90,   6.35,  -0.03,
05/22 17Z,  -0.30,   7.22,  99.90,   6.89,  -0.03,  (max)
05/22 18Z,  -0.30,   7.04,  99.90,   6.71,  -0.03,
05/22 19Z,  -0.30,   6.16,  99.90,   5.84,  -0.03,
05/22 20Z,  -0.20,   4.79,  99.90,   4.56,  -0.03,
05/22 21Z,  -0.20,   3.27,  99.90,   3.05,  -0.03,
05/22 22Z,  -0.10,   2.01,  99.90,   1.88,  -0.03,
05/22 23Z,   0.00,   1.35,  99.90,   1.32,  -0.03,  (min)
05/23 00Z,   0.00,   1.50,  99.90,   1.47,  -0.03,
05/23 01Z,   0.00,   2.50,  99.90,   2.47,  -0.03,
05/23 02Z,   0.00,   4.14,  99.90,   4.11,  -0.03,
05/23 03Z,   0.00,   6.07,  99.90,   6.04,  -0.03,
05/23 04Z,   0.00,   7.84,  99.90,   7.82,  -0.03,
05/23 05Z,   0.00,   9.05,  99.90,   9.03,  -0.03,
05/23 06Z,  -0.10,   9.40,  99.90,   9.27,  -0.03,  (max)
05/23 07Z,  -0.10,   8.79,  99.90,   8.66,  -0.03,
05/23 08Z,  -0.10,   7.34,  99.90,   7.21,  -0.03,
05/23 09Z,   0.00,   5.38,  99.90,   5.36,  -0.03,
05/23 10Z,   0.00,   3.36,  99.90,   3.34,  -0.03,
05/23 11Z,   0.00,   1.74,  99.90,   1.71,  -0.03,
05/23 12Z,   0.00,   0.86,  99.90,   0.84,  -0.03,  (min)
05/23 13Z,   0.00,   0.92,  99.90,   0.89,  -0.03,
05/23 14Z,   0.00,   1.84,  99.90,   1.82,  -0.03,
05/23 15Z,   0.00,   3.38,  99.90,   3.36,  -0.03,
05/23 16Z,   0.00,   5.12,  99.90,   5.09,  -0.03,
05/23 17Z,   0.00,   6.60,  99.90,   6.58,  -0.03,
05/23 18Z,   0.00,   7.46,  99.90,   7.43,  -0.03,
05/23 19Z,   0.00,   7.47,  99.90,   7.44,  -0.03,  (max)
05/23 20Z,   0.00,   6.65,  99.90,   6.63,  -0.03,
05/23 21Z,   0.00,   5.25,  99.90,   5.22,  -0.03,
05/23 22Z,   0.00,   3.66,  99.90,   3.63,  -0.03,
05/23 23Z,   0.00,   2.33,  99.90,   2.31,  -0.03,
05/24 00Z,   0.00,   1.68,  99.90,   1.65,  -0.03,  (min)
05/24 01Z,   0.00,   1.94,  99.90,   1.91,  -0.03,
05/24 02Z,   0.00,   3.11,  99.90,   3.08,  -0.03,
05/24 03Z,   0.00,   4.96,  99.90,   4.94,  -0.03,
05/24 04Z,   0.00,   7.07,  99.90,   7.05,  -0.03,
05/24 05Z,   0.00,   8.93,  99.90,   8.90,  -0.03,
05/24 06Z,   0.00,  10.07,  99.90,  10.04,  -0.03,
05/24 07Z,   0.00,  10.16,  99.90,  10.13,  -0.03,  (max)
05/24 08Z,   0.00,   9.14,  99.90,   9.11,  -0.03,
05/24 09Z,   0.00,   7.19,  99.90,   7.16,  -0.03,
05/24 10Z,   0.00,   4.72,  99.90,   4.69,  -0.03,
05/24 11Z,   0.00,   2.27,  99.90,   2.24,  -0.03,
05/24 12Z,   0.00,   0.37,  99.90,   0.34,  -0.03,
05/24 13Z,   0.00,  -0.58,  99.90,  -0.60,  -0.03,  (min)
05/24 14Z,   0.00,  -0.38,  99.90,  -0.41,  -0.03,
05/24 15Z,   0.00,   0.85,  99.90,   0.83,  -0.03,
05/24 16Z,   0.00,   2.80,  99.90,   2.77,  -0.03,
05/24 17Z,   0.00,   4.96,  99.90,   4.93,  -0.03,
05/24 18Z,   0.00,   6.79,  99.90,   6.77,  -0.03,