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 : 05/19/2026 06:23:28 GMT (units in feet MHHW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/17 12Z,  -0.40,  -3.71,  -4.41,  99.90,  -0.30,
05/17 13Z,  -0.50,  -7.07,  -7.71,  99.90,  -0.14,
05/17 14Z,  -0.50, -10.12, -10.72,  99.90,  -0.10,
05/17 15Z,  -0.50, -12.21, -12.73,  99.90,  -0.02,
05/17 16Z,  -0.40, -12.91, -13.44,  99.90,  -0.13,  (min)
05/17 17Z,  -0.20, -12.13, -12.56,  99.90,  -0.23,
05/17 18Z,  -0.40, -10.10, -10.60,  99.90,  -0.10,
05/17 19Z,  -0.40,  -7.33,  -7.87,  99.90,  -0.14,
05/17 20Z,  -0.40,  -4.49,  -5.07,  99.90,  -0.18,
05/17 21Z,  -0.30,  -2.22,  -2.80,  99.90,  -0.28,
05/17 22Z,  -0.20,  -0.98,  -1.57,  99.90,  -0.39,
05/17 23Z,  -0.10,  -0.97,  -1.48,  99.90,  -0.41,  (max)
05/18 00Z,  -0.30,  -2.04,  -2.45,  99.90,  -0.11,
05/18 01Z,  -0.30,  -3.76,  -4.08,  99.90,  -0.02,
05/18 02Z,  -0.30,  -5.57,  -5.80,  99.90,   0.07,
05/18 03Z,  -0.20,  -6.86,  -7.02,  99.90,   0.04,
05/18 04Z,  -0.20,  -7.19,  -7.26,  99.90,   0.13,  (min)
05/18 05Z,  -0.10,  -6.40,  -6.46,  99.90,   0.04,
05/18 06Z,  -0.30,  -4.62,  -4.76,  99.90,   0.16,
05/18 07Z,  -0.40,  -2.30,  -2.48,  99.90,   0.22,
05/18 08Z,  -0.40,  -0.04,  -0.29,  99.90,   0.15,
05/18 09Z,  -0.40,   1.54,   1.22,  99.90,   0.08,
05/18 10Z,  -0.30,   1.94,   1.51,  99.90,  -0.13,  (max)
05/18 11Z,  -0.20,   0.94,   0.49,  99.90,  -0.25,
05/18 12Z,  -0.40,  -1.34,  -1.72,  99.90,   0.02,
05/18 13Z,  -0.40,  -4.48,  -4.97,  99.90,  -0.09,
05/18 14Z,  -0.40,  -7.85,  -8.30,  99.90,  -0.05,
05/18 15Z,  -0.40, -10.74, -11.16,  99.90,  -0.02,
05/18 16Z,  -0.40, -12.56, -12.98,  99.90,  -0.02,
05/18 17Z,  -0.30, -12.96, -13.37,  99.90,  -0.11,  (min)
05/18 18Z,  -0.30, -11.90, -12.38,  99.90,  -0.18,
05/18 19Z,  -0.30,  -9.69, -10.29,  99.90,  -0.30,
05/18 20Z,  -0.30,  -6.87,  -7.52,  99.90,  -0.35,
05/18 21Z,  -0.30,  -4.11,  -4.90,  99.90,  -0.49,
05/18 22Z,  -0.20,  -2.01,  -2.80,  99.90,  -0.59,
05/18 23Z,  -0.20,  -0.99,  -1.82,  99.90,  -0.63,  (max)
05/19 00Z,  -0.30,  -1.15,  -1.94,  99.90,  -0.49,
05/19 01Z,  -0.30,  -2.31,  -2.96,  99.90,  -0.35,
05/19 02Z,  -0.30,  -4.01,  -4.65,  99.90,  -0.34,
05/19 03Z,  -0.30,  -5.68,  -6.19,  99.90,  -0.21,
05/19 04Z,  -0.20,  -6.76,  -7.26,  99.90,  -0.30,
05/19 05Z,  -0.10,  -6.88,  -7.28,  99.90,  -0.30,  (min)
05/19 06Z,  -0.10,  -5.93,  -6.44,  99.90,  -0.41,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/19 07Z,  -0.10,  -4.11,  99.90,  -4.60,  -0.40,
05/19 08Z,  -0.10,  -1.87,  99.90,  -2.35,  -0.38,
05/19 09Z,  -0.10,   0.18,  99.90,  -0.28,  -0.36,
05/19 10Z,  -0.10,   1.47,  99.90,   1.02,  -0.35,
05/19 11Z,  -0.20,   1.58,  99.90,   1.05,  -0.33,  (max)
05/19 12Z,  -0.30,   0.35,  99.90,  -0.26,  -0.31,
05/19 13Z,  -0.40,  -2.04,  99.90,  -2.74,  -0.30,
05/19 14Z,  -0.40,  -5.14,  99.90,  -5.82,  -0.28,
05/19 15Z,  -0.40,  -8.33,  99.90,  -9.00,  -0.26,
05/19 16Z,  -0.40, -10.95,  99.90, -11.60,  -0.25,
05/19 17Z,  -0.40, -12.46,  99.90, -13.09,  -0.23,
05/19 18Z,  -0.40, -12.59,  99.90, -13.21,  -0.22,  (min)
05/19 19Z,  -0.40, -11.37,  99.90, -11.98,  -0.22,
05/19 20Z,  -0.40,  -9.13,  99.90,  -9.75,  -0.22,
05/19 21Z,  -0.40,  -6.42,  99.90,  -7.03,  -0.22,
05/19 22Z,  -0.30,  -3.86,  99.90,  -4.37,  -0.22,
05/19 23Z,  -0.30,  -2.00,  99.90,  -2.51,  -0.22,
05/20 00Z,  -0.30,  -1.17,  99.90,  -1.69,  -0.22,  (max)
05/20 01Z,  -0.30,  -1.46,  99.90,  -1.97,  -0.22,
05/20 02Z,  -0.40,  -2.61,  99.90,  -3.23,  -0.22,
05/20 03Z,  -0.40,  -4.21,  99.90,  -4.82,  -0.22,
05/20 04Z,  -0.50,  -5.70,  99.90,  -6.41,  -0.22,
05/20 05Z,  -0.50,  -6.59,  99.90,  -7.31,  -0.22,  (min)
05/20 06Z,  -0.50,  -6.58,  99.90,  -7.29,  -0.22,
05/20 07Z,  -0.50,  -5.59,  99.90,  -6.31,  -0.22,
05/20 08Z,  -0.50,  -3.87,  99.90,  -4.58,  -0.22,
05/20 09Z,  -0.40,  -1.84,  99.90,  -2.46,  -0.22,
05/20 10Z,  -0.40,  -0.06,  99.90,  -0.67,  -0.22,
05/20 11Z,  -0.40,   0.96,  99.90,   0.35,  -0.22,  (max)
05/20 12Z,  -0.40,   0.87,  99.90,   0.25,  -0.22,
05/20 13Z,  -0.40,  -0.43,  99.90,  -1.04,  -0.22,
05/20 14Z,  -0.40,  -2.74,  99.90,  -3.36,  -0.22,
05/20 15Z,  -0.30,  -5.62,  99.90,  -6.14,  -0.22,
05/20 16Z,  -0.30,  -8.49,  99.90,  -9.01,  -0.22,
05/20 17Z,  -0.30, -10.77,  99.90, -11.28,  -0.22,
05/20 18Z,  -0.20, -11.99,  99.90, -12.40,  -0.22,  (min)
05/20 19Z,  -0.20, -11.93,  99.90, -12.35,  -0.22,
05/20 20Z,  -0.20, -10.68,  99.90, -11.09,  -0.22,
05/20 21Z,  -0.10,  -8.54,  99.90,  -8.86,  -0.22,
05/20 22Z,  -0.10,  -6.04,  99.90,  -6.35,  -0.22,
05/20 23Z,   0.00,  -3.73,  99.90,  -3.95,  -0.22,
05/21 00Z,   0.00,  -2.10,  99.90,  -2.31,  -0.22,
05/21 01Z,   0.00,  -1.43,  99.90,  -1.64,  -0.22,  (max)
05/21 02Z,   0.10,  -1.74,  99.90,  -1.86,  -0.22,
05/21 03Z,   0.10,  -2.83,  99.90,  -2.95,  -0.22,
05/21 04Z,   0.00,  -4.28,  99.90,  -4.49,  -0.22,
05/21 05Z,   0.00,  -5.61,  99.90,  -5.82,  -0.22,
05/21 06Z,   0.00,  -6.39,  99.90,  -6.60,  -0.22,  (min)
05/21 07Z,   0.00,  -6.36,  99.90,  -6.57,  -0.22,
05/21 08Z,  -0.10,  -5.48,  99.90,  -5.80,  -0.22,
05/21 09Z,  -0.10,  -3.97,  99.90,  -4.29,  -0.22,
05/21 10Z,  -0.20,  -2.22,  99.90,  -2.64,  -0.22,
05/21 11Z,  -0.20,  -0.71,  99.90,  -1.13,  -0.22,
05/21 12Z,  -0.20,   0.10,  99.90,  -0.31,  -0.22,  (max)
05/21 13Z,  -0.30,  -0.06,  99.90,  -0.58,  -0.22,
05/21 14Z,  -0.30,  -1.27,  99.90,  -1.79,  -0.22,
05/21 15Z,  -0.40,  -3.34,  99.90,  -3.96,  -0.22,
05/21 16Z,  -0.40,  -5.88,  99.90,  -6.49,  -0.22,
05/21 17Z,  -0.50,  -8.36,  99.90,  -9.08,  -0.22,
05/21 18Z,  -0.50, -10.29,  99.90, -11.01,  -0.22,
05/21 19Z,  -0.60, -11.27,  99.90, -12.09,  -0.22,  (min)
05/21 20Z,  -0.50, -11.13,  99.90, -11.84,  -0.22,
05/21 21Z,  -0.50,  -9.93,  99.90, -10.65,  -0.22,
05/21 22Z,  -0.50,  -7.98,  99.90,  -8.69,  -0.22,
05/21 23Z,  -0.50,  -5.72,  99.90,  -6.44,  -0.22,
05/22 00Z,  -0.50,  -3.66,  99.90,  -4.37,  -0.22,
05/22 01Z,  -0.50,  -2.20,  99.90,  -2.92,  -0.22,
05/22 02Z,  -0.50,  -1.61,  99.90,  -2.33,  -0.22,  (max)
05/22 03Z,  -0.60,  -1.91,  99.90,  -2.72,  -0.22,
05/22 04Z,  -0.60,  -2.89,  99.90,  -3.71,  -0.22,
05/22 05Z,  -0.60,  -4.22,  99.90,  -5.03,  -0.22,
05/22 06Z,  -0.60,  -5.46,  99.90,  -6.28,  -0.22,
05/22 07Z,  -0.60,  -6.24,  99.90,  -7.05,  -0.22,
05/22 08Z,  -0.60,  -6.32,  99.90,  -7.13,  -0.22,  (min)
05/22 09Z,  -0.60,  -5.66,  99.90,  -6.47,  -0.22,
05/22 10Z,  -0.60,  -4.43,  99.90,  -5.24,  -0.22,
05/22 11Z,  -0.50,  -2.97,  99.90,  -3.68,  -0.22,
05/22 12Z,  -0.50,  -1.68,  99.90,  -2.40,  -0.22,
05/22 13Z,  -0.50,  -0.96,  99.90,  -1.68,  -0.22,  (max)
05/22 14Z,  -0.50,  -1.07,  99.90,  -1.78,  -0.22,
05/22 15Z,  -0.50,  -2.05,  99.90,  -2.77,  -0.22,
05/22 16Z,  -0.50,  -3.78,  99.90,  -4.50,  -0.22,
05/22 17Z,  -0.50,  -5.91,  99.90,  -6.63,  -0.22,
05/22 18Z,  -0.40,  -8.01,  99.90,  -8.63,  -0.22,
05/22 19Z,  -0.40,  -9.64,  99.90, -10.25,  -0.22,
05/22 20Z,  -0.40, -10.45,  99.90, -11.07,  -0.22,  (min)
05/22 21Z,  -0.40, -10.29,  99.90, -10.90,  -0.22,
05/22 22Z,  -0.40,  -9.20,  99.90,  -9.82,  -0.22,
05/22 23Z,  -0.40,  -7.44,  99.90,  -8.06,  -0.22,
05/23 00Z,  -0.30,  -5.41,  99.90,  -5.93,  -0.22,