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
#Boston, MA : 07/18/2025 14:22:14 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/16 18Z,   0.40,   7.31,   7.46,  99.90,  -0.25,
07/16 19Z,   0.40,   9.22,   9.44,  99.90,  -0.18,
07/16 20Z,   0.50,  10.19,  10.34,  99.90,  -0.35,  (max)
07/16 21Z,   0.50,   9.85,  10.10,  99.90,  -0.25,
07/16 22Z,   0.50,   8.39,   8.57,  99.90,  -0.32,
07/16 23Z,   0.50,   6.23,   6.70,  99.90,  -0.03,
07/17 00Z,   0.40,   3.90,   4.42,  99.90,   0.12,
07/17 01Z,   0.40,   1.81,   2.31,  99.90,   0.10,
07/17 02Z,   0.40,   0.50,   1.03,  99.90,   0.13,  (min)
07/17 03Z,   0.40,   0.58,   1.31,  99.90,   0.33,
07/17 04Z,   0.40,   2.08,   2.71,  99.90,   0.23,
07/17 05Z,   0.40,   4.24,   4.61,  99.90,  -0.03,
07/17 06Z,   0.30,   6.46,   6.71,  99.90,  -0.05,
07/17 07Z,   0.30,   8.46,   8.88,  99.90,   0.12,
07/17 08Z,   0.30,   9.77,  10.18,  99.90,   0.11,
07/17 09Z,   0.30,   9.88,  10.28,  99.90,   0.10,  (max)
07/17 10Z,   0.30,   8.76,   9.01,  99.90,  -0.05,
07/17 11Z,   0.30,   6.79,   7.25,  99.90,   0.16,
07/17 12Z,   0.40,   4.47,   5.04,  99.90,   0.17,
07/17 13Z,   0.40,   2.25,   2.71,  99.90,   0.06,
07/17 14Z,   0.40,   0.58,   1.10,  99.90,   0.12,
07/17 15Z,   0.40,   0.10,   0.72,  99.90,   0.22,  (min)
07/17 16Z,   0.40,   1.15,   1.95,  99.90,   0.40,
07/17 17Z,   0.40,   3.25,   3.86,  99.90,   0.21,
07/17 18Z,   0.50,   5.61,   5.83,  99.90,  -0.28,
07/17 19Z,   0.50,   7.88,   8.18,  99.90,  -0.20,
07/17 20Z,   0.50,   9.68,   9.97,  99.90,  -0.21,
07/17 21Z,   0.50,  10.43,  10.69,  99.90,  -0.24,  (max)
07/17 22Z,   0.50,   9.88,  10.23,  99.90,  -0.15,
07/17 23Z,   0.50,   8.26,   8.66,  99.90,  -0.10,
07/18 00Z,   0.50,   6.04,   6.66,  99.90,   0.12,
07/18 01Z,   0.60,   3.69,   4.40,  99.90,   0.11,
07/18 02Z,   0.50,   1.61,   2.27,  99.90,   0.16,
07/18 03Z,   0.50,   0.37,   1.16,  99.90,   0.29,  (min)
07/18 04Z,   0.50,   0.55,   1.34,  99.90,   0.29,
07/18 05Z,   0.40,   2.05,   2.62,  99.90,   0.17,
07/18 06Z,   0.40,   4.13,   4.48,  99.90,  -0.05,
07/18 07Z,   0.30,   6.29,   6.67,  99.90,   0.08,
07/18 08Z,   0.30,   8.24,   8.68,  99.90,   0.14,
07/18 09Z,   0.30,   9.47,   9.93,  99.90,   0.16,  (max)
07/18 10Z,   0.30,   9.51,   9.71,  99.90,  -0.10,
07/18 11Z,   0.30,   8.38,   8.61,  99.90,  -0.07,
07/18 12Z,   0.30,   6.47,   6.91,  99.90,   0.14,
07/18 13Z,   0.30,   4.28,   4.68,  99.90,   0.10,
07/18 14Z,   0.30,   2.21,   2.59,  99.90,   0.08,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/18 15Z,   0.20,   0.70,  99.90,   0.98,   0.08,
07/18 16Z,   0.30,   0.41,  99.90,   0.79,   0.08,  (min)
07/18 17Z,   0.30,   1.60,  99.90,   1.98,   0.07,
07/18 18Z,   0.30,   3.71,  99.90,   4.08,   0.07,
07/18 19Z,   0.20,   6.03,  99.90,   6.30,   0.07,
07/18 20Z,   0.20,   8.27,  99.90,   8.54,   0.06,
07/18 21Z,   0.30,   9.99,  99.90,  10.35,   0.06,
07/18 22Z,   0.30,  10.60,  99.90,  10.96,   0.06,  (max)
07/18 23Z,   0.40,   9.92,  99.90,  10.38,   0.06,
07/19 00Z,   0.40,   8.23,  99.90,   8.68,   0.05,
07/19 01Z,   0.40,   5.98,  99.90,   6.43,   0.05,
07/19 02Z,   0.40,   3.62,  99.90,   4.07,   0.05,
07/19 03Z,   0.30,   1.52,  99.90,   1.87,   0.05,
07/19 04Z,   0.30,   0.28,  99.90,   0.63,   0.05,  (min)
07/19 05Z,   0.20,   0.46,  99.90,   0.71,   0.05,
07/19 06Z,   0.20,   1.89,  99.90,   2.14,   0.05,
07/19 07Z,   0.20,   3.87,  99.90,   4.12,   0.05,
07/19 08Z,   0.20,   5.99,  99.90,   6.24,   0.05,
07/19 09Z,   0.30,   7.95,  99.90,   8.30,   0.05,
07/19 10Z,   0.40,   9.17,  99.90,   9.62,   0.05,
07/19 11Z,   0.50,   9.20,  99.90,   9.75,   0.05,  (max)
07/19 12Z,   0.50,   8.14,  99.90,   8.68,   0.05,
07/19 13Z,   0.60,   6.35,  99.90,   7.00,   0.05,
07/19 14Z,   0.60,   4.29,  99.90,   4.94,   0.05,
07/19 15Z,   0.60,   2.31,  99.90,   2.95,   0.05,
07/19 16Z,   0.60,   0.88,  99.90,   1.53,   0.05,
07/19 17Z,   0.60,   0.69,  99.90,   1.33,   0.05,  (min)
07/19 18Z,   0.50,   1.92,  99.90,   2.47,   0.05,
07/19 19Z,   0.60,   3.98,  99.90,   4.63,   0.05,
07/19 20Z,   0.50,   6.28,  99.90,   6.82,   0.05,
07/19 21Z,   0.50,   8.51,  99.90,   9.06,   0.05,
07/19 22Z,   0.50,  10.19,  99.90,  10.74,   0.05,
07/19 23Z,   0.50,  10.73,  99.90,  11.27,   0.05,  (max)
07/20 00Z,   0.40,   9.99,  99.90,  10.44,   0.05,
07/20 01Z,   0.30,   8.29,  99.90,   8.64,   0.05,
07/20 02Z,   0.30,   6.05,  99.90,   6.40,   0.05,
07/20 03Z,   0.30,   3.65,  99.90,   4.00,   0.05,
07/20 04Z,   0.30,   1.48,  99.90,   1.82,   0.05,
07/20 05Z,   0.20,   0.18,  99.90,   0.43,   0.05,  (min)
07/20 06Z,   0.20,   0.31,  99.90,   0.56,   0.05,
07/20 07Z,   0.20,   1.64,  99.90,   1.89,   0.05,
07/20 08Z,   0.20,   3.54,  99.90,   3.78,   0.05,
07/20 09Z,   0.30,   5.67,  99.90,   6.02,   0.05,
07/20 10Z,   0.30,   7.68,  99.90,   8.03,   0.05,
07/20 11Z,   0.30,   8.94,  99.90,   9.28,   0.05,
07/20 12Z,   0.40,   9.03,  99.90,   9.48,   0.05,  (max)
07/20 13Z,   0.30,   8.06,  99.90,   8.41,   0.05,
07/20 14Z,   0.40,   6.40,  99.90,   6.84,   0.05,
07/20 15Z,   0.40,   4.42,  99.90,   4.86,   0.05,
07/20 16Z,   0.40,   2.45,  99.90,   2.89,   0.05,
07/20 17Z,   0.40,   1.02,  99.90,   1.47,   0.05,
07/20 18Z,   0.40,   0.86,  99.90,   1.31,   0.05,  (min)
07/20 19Z,   0.40,   2.08,  99.90,   2.52,   0.05,
07/20 20Z,   0.40,   4.09,  99.90,   4.53,   0.05,
07/20 21Z,   0.40,   6.38,  99.90,   6.83,   0.05,
07/20 22Z,   0.50,   8.65,  99.90,   9.20,   0.05,
07/20 23Z,   0.50,  10.34,  99.90,  10.88,   0.05,
07/21 00Z,   0.50,  10.85,  99.90,  11.40,   0.05,  (max)
07/21 01Z,   0.50,  10.12,  99.90,  10.66,   0.05,
07/21 02Z,   0.60,   8.44,  99.90,   9.08,   0.05,
07/21 03Z,   0.50,   6.19,  99.90,   6.74,   0.05,
07/21 04Z,   0.50,   3.71,  99.90,   4.26,   0.05,
07/21 05Z,   0.40,   1.42,  99.90,   1.86,   0.05,
07/21 06Z,   0.40,   0.04,  99.90,   0.48,   0.05,  (min)
07/21 07Z,   0.40,   0.11,  99.90,   0.55,   0.05,
07/21 08Z,   0.40,   1.35,  99.90,   1.80,   0.05,
07/21 09Z,   0.30,   3.21,  99.90,   3.56,   0.05,
07/21 10Z,   0.30,   5.41,  99.90,   5.76,   0.05,
07/21 11Z,   0.40,   7.52,  99.90,   7.96,   0.05,
07/21 12Z,   0.50,   8.83,  99.90,   9.38,   0.05,
07/21 13Z,   0.40,   9.00,  99.90,   9.44,   0.05,  (max)
07/21 14Z,   0.30,   8.13,  99.90,   8.47,   0.05,
07/21 15Z,   0.30,   6.54,  99.90,   6.89,   0.05,
07/21 16Z,   0.30,   4.57,  99.90,   4.92,   0.05,
07/21 17Z,   0.30,   2.54,  99.90,   2.89,   0.05,
07/21 18Z,   0.30,   1.07,  99.90,   1.41,   0.05,
07/21 19Z,   0.40,   0.89,  99.90,   1.34,   0.05,  (min)
07/21 20Z,   0.40,   2.09,  99.90,   2.54,   0.05,
07/21 21Z,   0.50,   4.07,  99.90,   4.62,   0.05,
07/21 22Z,   0.50,   6.41,  99.90,   6.95,   0.05,
07/21 23Z,   0.50,   8.76,  99.90,   9.30,   0.05,
07/22 00Z,   0.60,  10.47,  99.90,  11.11,   0.05,
07/22 01Z,   0.60,  10.99,  99.90,  11.63,   0.05,  (max)
07/22 02Z,   0.60,  10.27,  99.90,  10.92,   0.05,
07/22 03Z,   0.50,   8.60,  99.90,   9.15,   0.05,
07/22 04Z,   0.40,   6.32,  99.90,   6.76,   0.05,
07/22 05Z,   0.40,   3.72,  99.90,   4.17,   0.05,
07/22 06Z,   0.30,   1.29,  99.90,   1.64,   0.05,