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
#Ketchikan, AK : 05/10/2026 20:23:30 GMT (units in feet MHHW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/09 00Z,   0.20,  -7.53,  -7.34,  99.90,  -0.01,
05/09 01Z,   0.30,  -5.83,  -5.68,  99.90,  -0.15,
05/09 02Z,   0.40,  -4.77,  -4.69,  99.90,  -0.32,
05/09 03Z,   0.50,  -4.54,  -4.51,  99.90,  -0.47,  (max)
05/09 04Z,   0.50,  -5.11,  -5.07,  99.90,  -0.46,
05/09 05Z,   0.50,  -6.25,  -6.09,  99.90,  -0.34,
05/09 06Z,   0.30,  -7.58,  -7.32,  99.90,  -0.04,
05/09 07Z,   0.40,  -8.66,  -8.35,  99.90,  -0.09,
05/09 08Z,   0.50,  -9.18,  -8.80,  99.90,  -0.12,  (min)
05/09 09Z,   0.50,  -8.95,  -8.69,  99.90,  -0.24,
05/09 10Z,   0.60,  -8.04,  -7.91,  99.90,  -0.47,
05/09 11Z,   0.70,  -6.68,  -6.56,  99.90,  -0.58,
05/09 12Z,   0.40,  -5.22,  -5.05,  99.90,  -0.23,
05/09 13Z,   0.50,  -4.07,  -3.92,  99.90,  -0.35,
05/09 14Z,   0.60,  -3.57,  -3.34,  99.90,  -0.37,  (max)
05/09 15Z,   0.60,  -3.94,  -3.64,  99.90,  -0.30,
05/09 16Z,   0.60,  -5.19,  -4.90,  99.90,  -0.31,
05/09 17Z,   0.60,  -7.09,  -6.80,  99.90,  -0.31,
05/09 18Z,   0.30,  -9.25,  -9.06,  99.90,  -0.11,
05/09 19Z,   0.30, -11.21, -11.16,  99.90,  -0.25,
05/09 20Z,   0.30, -12.54, -12.50,  99.90,  -0.26,
05/09 21Z,   0.40, -12.99, -12.97,  99.90,  -0.38,  (min)
05/09 22Z,   0.40, -12.50, -12.33,  99.90,  -0.23,
05/09 23Z,   0.50, -11.20, -10.95,  99.90,  -0.25,
05/10 00Z,   0.20,  -9.37,  -9.00,  99.90,   0.17,
05/10 01Z,   0.30,  -7.41,  -7.15,  99.90,  -0.04,
05/10 02Z,   0.40,  -5.69,  -5.55,  99.90,  -0.26,
05/10 03Z,   0.40,  -4.57,  -4.57,  99.90,  -0.40,
05/10 04Z,   0.40,  -4.26,  -4.27,  99.90,  -0.41,  (max)
05/10 05Z,   0.40,  -4.77,  -4.74,  99.90,  -0.37,
05/10 06Z,   0.20,  -5.92,  -5.66,  99.90,   0.06,
05/10 07Z,   0.20,  -7.35,  -7.04,  99.90,   0.11,
05/10 08Z,   0.20,  -8.64,  -8.31,  99.90,   0.13,
05/10 09Z,   0.30,  -9.42,  -9.11,  99.90,   0.01,
05/10 10Z,   0.30,  -9.48,  -9.36,  99.90,  -0.18,  (min)
05/10 11Z,   0.30,  -8.79,  -8.77,  99.90,  -0.28,
05/10 12Z,   0.10,  -7.55,  -7.65,  99.90,  -0.20,
05/10 13Z,   0.20,  -6.08,  -6.20,  99.90,  -0.32,
05/10 14Z,   0.20,  -4.80,  -4.82,  99.90,  -0.22,
05/10 15Z,   0.20,  -4.08,  -4.10,  99.90,  -0.22,  (max)
05/10 16Z,   0.20,  -4.19,  -4.21,  99.90,  -0.22,
05/10 17Z,   0.20,  -5.19,  -5.25,  99.90,  -0.26,
05/10 18Z,   0.10,  -6.91,  -6.99,  99.90,  -0.18,
05/10 19Z,   0.00,  -8.98,  -9.13,  99.90,  -0.15,
05/10 20Z,   0.00, -10.94, -11.07,  99.90,  -0.13,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/10 21Z,   0.00, -12.34,  99.90, -12.48,  -0.14,
05/10 22Z,  -0.10, -12.87,  99.90, -13.11,  -0.14,  (min)
05/10 23Z,  -0.10, -12.42,  99.90, -12.67,  -0.15,
05/11 00Z,  -0.10, -11.08,  99.90, -11.33,  -0.15,
05/11 01Z,  -0.10,  -9.14,  99.90,  -9.39,  -0.15,
05/11 02Z,  -0.10,  -6.99,  99.90,  -7.25,  -0.16,
05/11 03Z,  -0.10,  -5.09,  99.90,  -5.35,  -0.16,
05/11 04Z,  -0.10,  -3.84,  99.90,  -4.10,  -0.17,
05/11 05Z,  -0.10,  -3.50,  99.90,  -3.77,  -0.17,  (max)
05/11 06Z,  -0.10,  -4.14,  99.90,  -4.41,  -0.18,
05/11 07Z,  -0.20,  -5.56,  99.90,  -5.94,  -0.18,
05/11 08Z,  -0.20,  -7.39,  99.90,  -7.77,  -0.18,
05/11 09Z,  -0.30,  -9.12,  99.90,  -9.61,  -0.18,
05/11 10Z,  -0.30, -10.31,  99.90, -10.79,  -0.18,
05/11 11Z,  -0.30, -10.64,  99.90, -11.12,  -0.18,  (min)
05/11 12Z,  -0.30, -10.03,  99.90, -10.51,  -0.18,
05/11 13Z,  -0.40,  -8.66,  99.90,  -9.24,  -0.18,
05/11 14Z,  -0.40,  -6.90,  99.90,  -7.49,  -0.18,
05/11 15Z,  -0.40,  -5.24,  99.90,  -5.82,  -0.18,
05/11 16Z,  -0.50,  -4.14,  99.90,  -4.82,  -0.18,
05/11 17Z,  -0.60,  -3.94,  99.90,  -4.73,  -0.18,  (max)
05/11 18Z,  -0.60,  -4.78,  99.90,  -5.56,  -0.18,
05/11 19Z,  -0.70,  -6.48,  99.90,  -7.37,  -0.18,
05/11 20Z,  -0.70,  -8.67,  99.90,  -9.56,  -0.18,
05/11 21Z,  -0.60, -10.82,  99.90, -11.60,  -0.18,
05/11 22Z,  -0.60, -12.39,  99.90, -13.17,  -0.18,
05/11 23Z,  -0.50, -12.99,  99.90, -13.67,  -0.18,  (min)
05/12 00Z,  -0.50, -12.45,  99.90, -13.14,  -0.18,
05/12 01Z,  -0.40, -10.89,  99.90, -11.47,  -0.18,
05/12 02Z,  -0.50,  -8.61,  99.90,  -9.29,  -0.18,
05/12 03Z,  -0.50,  -6.12,  99.90,  -6.81,  -0.18,
05/12 04Z,  -0.50,  -3.97,  99.90,  -4.65,  -0.18,
05/12 05Z,  -0.50,  -2.64,  99.90,  -3.32,  -0.18,
05/12 06Z,  -0.60,  -2.45,  99.90,  -3.24,  -0.18,  (max)
05/12 07Z,  -0.60,  -3.47,  99.90,  -4.26,  -0.18,
05/12 08Z,  -0.60,  -5.45,  99.90,  -6.24,  -0.18,
05/12 09Z,  -0.60,  -7.91,  99.90,  -8.70,  -0.18,
05/12 10Z,  -0.60, -10.23,  99.90, -11.01,  -0.18,
05/12 11Z,  -0.50, -11.81,  99.90, -12.49,  -0.18,
05/12 12Z,  -0.50, -12.27,  99.90, -12.95,  -0.18,  (min)
05/12 13Z,  -0.40, -11.50,  99.90, -12.09,  -0.18,
05/12 14Z,  -0.40,  -9.73,  99.90, -10.32,  -0.18,
05/12 15Z,  -0.40,  -7.44,  99.90,  -8.03,  -0.18,
05/12 16Z,  -0.40,  -5.24,  99.90,  -5.83,  -0.18,
05/12 17Z,  -0.40,  -3.72,  99.90,  -4.31,  -0.18,
05/12 18Z,  -0.40,  -3.31,  99.90,  -3.89,  -0.18,  (max)
05/12 19Z,  -0.40,  -4.13,  99.90,  -4.72,  -0.18,
05/12 20Z,  -0.40,  -6.02,  99.90,  -6.60,  -0.18,
05/12 21Z,  -0.40,  -8.49,  99.90,  -9.08,  -0.18,
05/12 22Z,  -0.30, -10.92,  99.90, -11.40,  -0.18,
05/12 23Z,  -0.20, -12.65,  99.90, -13.03,  -0.18,
05/13 00Z,  -0.20, -13.20,  99.90, -13.59,  -0.18,  (min)
05/13 01Z,  -0.10, -12.41,  99.90, -12.69,  -0.18,
05/13 02Z,   0.00, -10.41,  99.90, -10.59,  -0.18,
05/13 03Z,   0.00,  -7.65,  99.90,  -7.84,  -0.18,
05/13 04Z,   0.00,  -4.77,  99.90,  -4.95,  -0.18,
05/13 05Z,   0.00,  -2.43,  99.90,  -2.61,  -0.18,
05/13 06Z,  -0.10,  -1.19,  99.90,  -1.48,  -0.18,  (max)
05/13 07Z,  -0.10,  -1.40,  99.90,  -1.68,  -0.18,
05/13 08Z,  -0.20,  -3.04,  99.90,  -3.43,  -0.18,
05/13 09Z,  -0.20,  -5.79,  99.90,  -6.18,  -0.18,
05/13 10Z,  -0.20,  -9.00,  99.90,  -9.38,  -0.18,
05/13 11Z,  -0.10, -11.89,  99.90, -12.17,  -0.18,
05/13 12Z,   0.00, -13.73,  99.90, -13.92,  -0.18,
05/13 13Z,   0.00, -14.10,  99.90, -14.28,  -0.18,  (min)
05/13 14Z,   0.00, -12.91,  99.90, -13.10,  -0.18,
05/13 15Z,   0.00, -10.52,  99.90, -10.70,  -0.18,
05/13 16Z,   0.00,  -7.56,  99.90,  -7.75,  -0.18,
05/13 17Z,   0.00,  -4.81,  99.90,  -4.99,  -0.18,
05/13 18Z,  -0.10,  -2.95,  99.90,  -3.24,  -0.18,
05/13 19Z,  -0.20,  -2.46,  99.90,  -2.84,  -0.18,  (max)
05/13 20Z,  -0.20,  -3.45,  99.90,  -3.84,  -0.18,
05/13 21Z,  -0.20,  -5.67,  99.90,  -6.06,  -0.18,
05/13 22Z,  -0.10,  -8.53,  99.90,  -8.81,  -0.18,
05/13 23Z,   0.00, -11.23,  99.90, -11.41,  -0.18,
05/14 00Z,   0.00, -13.02,  99.90, -13.20,  -0.18,
05/14 01Z,   0.00, -13.36,  99.90, -13.55,  -0.18,  (min)
05/14 02Z,   0.00, -12.12,  99.90, -12.30,  -0.18,
05/14 03Z,   0.00,  -9.56,  99.90,  -9.74,  -0.18,
05/14 04Z,   0.00,  -6.28,  99.90,  -6.47,  -0.18,
05/14 05Z,   0.00,  -3.07,  99.90,  -3.26,  -0.18,
05/14 06Z,  -0.10,  -0.70,  99.90,  -0.99,  -0.18,
05/14 07Z,  -0.10,   0.22,  99.90,  -0.06,  -0.18,  (max)
05/14 08Z,  -0.10,  -0.58,  99.90,  -0.87,  -0.18,
05/14 09Z,  -0.10,  -3.04,  99.90,  -3.32,  -0.18,
05/14 10Z,  -0.10,  -6.64,  99.90,  -6.92,  -0.18,
05/14 11Z,   0.00, -10.57,  99.90, -10.75,  -0.18,
05/14 12Z,   0.00, -13.89,  99.90, -14.07,  -0.18,