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
Surge List
#Sitka, AK : 04/21/2026 09:21:07 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/19 18Z,   0.00,  -1.56,  -1.93,  99.90,  -0.37,  (min)
04/19 19Z,   0.00,   0.45,   0.04,  99.90,  -0.41,
04/19 20Z,   0.00,   3.17,   2.74,  99.90,  -0.43,
04/19 21Z,   0.00,   5.92,   5.40,  99.90,  -0.52,
04/19 22Z,   0.00,   8.08,   7.55,  99.90,  -0.53,
04/19 23Z,   0.00,   9.19,   8.59,  99.90,  -0.60,
04/20 00Z,  -0.10,   9.07,   8.63,  99.90,  -0.34,  (max)
04/20 01Z,   0.00,   7.88,   7.44,  99.90,  -0.44,
04/20 02Z,   0.00,   6.05,   5.75,  99.90,  -0.30,
04/20 03Z,   0.00,   4.18,   3.93,  99.90,  -0.25,
04/20 04Z,   0.00,   2.85,   2.65,  99.90,  -0.20,
04/20 05Z,   0.00,   2.49,   2.30,  99.90,  -0.19,  (min)
04/20 06Z,   0.00,   3.26,   3.06,  99.90,  -0.20,
04/20 07Z,   0.00,   5.02,   4.83,  99.90,  -0.19,
04/20 08Z,   0.00,   7.34,   7.08,  99.90,  -0.26,
04/20 09Z,   0.00,   9.60,   9.34,  99.90,  -0.26,
04/20 10Z,   0.00,  11.21,  10.85,  99.90,  -0.36,
04/20 11Z,   0.00,  11.68,  11.36,  99.90,  -0.32,  (max)
04/20 12Z,   0.00,  10.81,  10.51,  99.90,  -0.30,
04/20 13Z,   0.00,   8.71,   8.41,  99.90,  -0.30,
04/20 14Z,   0.00,   5.78,   5.55,  99.90,  -0.23,
04/20 15Z,   0.00,   2.64,   2.33,  99.90,  -0.31,
04/20 16Z,   0.00,  -0.05,  -0.31,  99.90,  -0.26,
04/20 17Z,   0.00,  -1.74,  -2.12,  99.90,  -0.38,
04/20 18Z,   0.00,  -2.09,  -2.44,  99.90,  -0.35,  (min)
04/20 19Z,  -0.10,  -1.09,  -1.43,  99.90,  -0.24,
04/20 20Z,  -0.10,   0.95,   0.58,  99.90,  -0.27,
04/20 21Z,  -0.10,   3.53,   3.04,  99.90,  -0.39,
04/20 22Z,  -0.10,   6.03,   5.47,  99.90,  -0.46,
04/20 23Z,  -0.10,   7.89,   7.32,  99.90,  -0.47,
04/21 00Z,  -0.10,   8.74,   8.20,  99.90,  -0.44,  (max)
04/21 01Z,  -0.20,   8.50,   8.04,  99.90,  -0.26,
04/21 02Z,  -0.20,   7.37,   6.94,  99.90,  -0.23,
04/21 03Z,  -0.20,   5.77,   5.42,  99.90,  -0.15,
04/21 04Z,  -0.20,   4.23,   3.92,  99.90,  -0.11,
04/21 05Z,  -0.10,   3.26,   2.95,  99.90,  -0.21,
04/21 06Z,  -0.10,   3.20,   2.91,  99.90,  -0.19,  (min)
04/21 07Z,   0.00,   4.12,   3.77,  99.90,  -0.35,
04/21 08Z,   0.00,   5.83,   5.50,  99.90,  -0.33,
04/21 09Z,   0.00,   7.90,   7.49,  99.90,  -0.41,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/21 10Z,  -0.10,   9.80,  99.90,   9.30,  -0.40,
04/21 11Z,  -0.10,  11.00,  99.90,  10.50,  -0.40,
04/21 12Z,  -0.10,  11.12,  99.90,  10.63,  -0.39,  (max)
04/21 13Z,  -0.20,  10.05,  99.90,   9.47,  -0.38,
04/21 14Z,  -0.20,   7.93,  99.90,   7.36,  -0.37,
04/21 15Z,  -0.20,   5.18,  99.90,   4.61,  -0.37,
04/21 16Z,  -0.20,   2.35,  99.90,   1.79,  -0.36,
04/21 17Z,  -0.10,   0.03,  99.90,  -0.43,  -0.35,
04/21 18Z,  -0.10,  -1.33,  99.90,  -1.78,  -0.35,
04/21 19Z,  -0.10,  -1.49,  99.90,  -1.93,  -0.34,  (min)
04/21 20Z,  -0.10,  -0.48,  99.90,  -0.91,  -0.33,
04/21 21Z,  -0.10,   1.41,  99.90,   0.99,  -0.32,
04/21 22Z,  -0.10,   3.72,  99.90,   3.29,  -0.32,
04/21 23Z,  -0.10,   5.89,  99.90,   5.47,  -0.32,
04/22 00Z,  -0.10,   7.47,  99.90,   7.05,  -0.32,
04/22 01Z,  -0.10,   8.18,  99.90,   7.76,  -0.32,  (max)
04/22 02Z,  -0.10,   7.96,  99.90,   7.54,  -0.32,
04/22 03Z,  -0.20,   7.01,  99.90,   6.49,  -0.32,
04/22 04Z,  -0.30,   5.71,  99.90,   5.09,  -0.32,
04/22 05Z,  -0.30,   4.50,  99.90,   3.88,  -0.32,
04/22 06Z,  -0.40,   3.79,  99.90,   3.07,  -0.32,  (min)
04/22 07Z,  -0.40,   3.85,  99.90,   3.13,  -0.32,
04/22 08Z,  -0.30,   4.72,  99.90,   4.09,  -0.32,
04/22 09Z,  -0.30,   6.20,  99.90,   5.57,  -0.32,
04/22 10Z,  -0.30,   7.92,  99.90,   7.30,  -0.32,
04/22 11Z,  -0.30,   9.44,  99.90,   8.82,  -0.32,
04/22 12Z,  -0.30,  10.33,  99.90,   9.70,  -0.32,  (max)
04/22 13Z,  -0.30,  10.28,  99.90,   9.66,  -0.32,
04/22 14Z,  -0.30,   9.23,  99.90,   8.61,  -0.32,
04/22 15Z,  -0.40,   7.33,  99.90,   6.60,  -0.32,
04/22 16Z,  -0.40,   4.92,  99.90,   4.20,  -0.32,
04/22 17Z,  -0.40,   2.48,  99.90,   1.76,  -0.32,
04/22 18Z,  -0.40,   0.50,  99.90,  -0.22,  -0.32,
04/22 19Z,  -0.40,  -0.64,  99.90,  -1.37,  -0.32,
04/22 20Z,  -0.40,  -0.77,  99.90,  -1.49,  -0.32,  (min)
04/22 21Z,  -0.50,   0.11,  99.90,  -0.72,  -0.32,
04/22 22Z,  -0.50,   1.72,  99.90,   0.90,  -0.32,
04/22 23Z,  -0.60,   3.70,  99.90,   2.77,  -0.32,
04/23 00Z,  -0.60,   5.58,  99.90,   4.66,  -0.32,
04/23 01Z,  -0.60,   6.99,  99.90,   6.07,  -0.32,
04/23 02Z,  -0.60,   7.69,  99.90,   6.76,  -0.32,  (max)
04/23 03Z,  -0.60,   7.61,  99.90,   6.69,  -0.32,
04/23 04Z,  -0.50,   6.92,  99.90,   6.09,  -0.32,
04/23 05Z,  -0.50,   5.90,  99.90,   5.07,  -0.32,
04/23 06Z,  -0.50,   4.91,  99.90,   4.09,  -0.32,
04/23 07Z,  -0.50,   4.31,  99.90,   3.48,  -0.32,
04/23 08Z,  -0.50,   4.30,  99.90,   3.47,  -0.32,  (min)
04/23 09Z,  -0.50,   4.93,  99.90,   4.10,  -0.32,
04/23 10Z,  -0.60,   6.06,  99.90,   5.14,  -0.32,
04/23 11Z,  -0.60,   7.42,  99.90,   6.50,  -0.32,
04/23 12Z,  -0.60,   8.64,  99.90,   7.72,  -0.32,
04/23 13Z,  -0.70,   9.37,  99.90,   8.35,  -0.32,  (max)
04/23 14Z,  -0.70,   9.36,  99.90,   8.34,  -0.32,
04/23 15Z,  -0.70,   8.53,  99.90,   7.51,  -0.32,
04/23 16Z,  -0.70,   6.98,  99.90,   5.96,  -0.32,
04/23 17Z,  -0.70,   4.99,  99.90,   3.96,  -0.32,
04/23 18Z,  -0.70,   2.92,  99.90,   1.90,  -0.32,
04/23 19Z,  -0.70,   1.19,  99.90,   0.17,  -0.32,
04/23 20Z,  -0.70,   0.12,  99.90,  -0.90,  -0.32,
04/23 21Z,  -0.60,  -0.10,  99.90,  -1.02,  -0.32,  (min)
04/23 22Z,  -0.60,   0.54,  99.90,  -0.38,  -0.32,
04/23 23Z,  -0.50,   1.86,  99.90,   1.04,  -0.32,
04/24 00Z,  -0.50,   3.56,  99.90,   2.74,  -0.32,
04/24 01Z,  -0.50,   5.27,  99.90,   4.45,  -0.32,
04/24 02Z,  -0.60,   6.65,  99.90,   5.72,  -0.32,
04/24 03Z,  -0.60,   7.44,  99.90,   6.52,  -0.32,
04/24 04Z,  -0.60,   7.57,  99.90,   6.64,  -0.32,  (max)
04/24 05Z,  -0.60,   7.10,  99.90,   6.18,  -0.32,
04/24 06Z,  -0.70,   6.26,  99.90,   5.23,  -0.32,
04/24 07Z,  -0.70,   5.34,  99.90,   4.31,  -0.32,
04/24 08Z,  -0.60,   4.64,  99.90,   3.71,  -0.32,
04/24 09Z,  -0.60,   4.39,  99.90,   3.46,  -0.32,  (min)
04/24 10Z,  -0.60,   4.68,  99.90,   3.76,  -0.32,
04/24 11Z,  -0.60,   5.46,  99.90,   4.54,  -0.32,
04/24 12Z,  -0.50,   6.53,  99.90,   5.70,  -0.32,
04/24 13Z,  -0.50,   7.59,  99.90,   6.77,  -0.32,
04/24 14Z,  -0.50,   8.35,  99.90,   7.53,  -0.32,
04/24 15Z,  -0.60,   8.55,  99.90,   7.62,  -0.32,  (max)
04/24 16Z,  -0.70,   8.05,  99.90,   7.03,  -0.32,
04/24 17Z,  -0.70,   6.91,  99.90,   5.88,  -0.32,
04/24 18Z,  -0.70,   5.28,  99.90,   4.26,  -0.32,
04/24 19Z,  -0.70,   3.49,  99.90,   2.47,  -0.32,
04/24 20Z,  -0.70,   1.88,  99.90,   0.86,  -0.32,
04/24 21Z,  -0.70,   0.77,  99.90,  -0.25,  -0.32,
04/24 22Z,  -0.70,   0.39,  99.90,  -0.63,  -0.32,  (min)
04/24 23Z,  -0.60,   0.81,  99.90,  -0.12,  -0.32,
04/25 00Z,  -0.60,   1.91,  99.90,   0.99,  -0.32,
04/25 01Z,  99.90,   3.47,  99.90,  99.90,  -0.32,
04/25 02Z,  99.90,   5.15,  99.90,  99.90,  -0.32,
04/25 03Z,  99.90,   6.60,  99.90,  99.90,  -0.32,
04/25 04Z,  99.90,   7.55,  99.90,  99.90,  -0.32,
04/25 05Z,  99.90,   7.84,  99.90,  99.90,  -0.32,
04/25 06Z,  99.90,   7.48,  99.90,  99.90,  -0.32,