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
#Philadelphia, PA : 06/30/2025 23:22:27 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
06/29 06Z,   0.90,   4.11,   5.11,  99.90,   0.10,
06/29 07Z,   0.90,   5.39,   6.41,  99.90,   0.12,
06/29 08Z,   0.80,   6.38,   7.38,  99.90,   0.20,
06/29 09Z,   0.80,   6.88,   7.95,  99.90,   0.27,  (max)
06/29 10Z,   0.80,   6.55,   7.43,  99.90,   0.08,
06/29 11Z,   0.80,   5.73,   6.26,  99.90,  -0.27,
06/29 12Z,   0.80,   4.82,   5.05,  99.90,  -0.57,
06/29 13Z,   0.80,   3.83,   4.01,  99.90,  -0.62,
06/29 14Z,   0.80,   2.67,   2.90,  99.90,  -0.57,
06/29 15Z,   0.80,   1.37,   1.79,  99.90,  -0.38,
06/29 16Z,   0.80,   0.54,   0.93,  99.90,  -0.41,
06/29 17Z,   0.70,   0.96,   0.83,  99.90,  -0.83,  (min)
06/29 18Z,   0.60,   2.32,   3.04,  99.90,   0.12,
06/29 19Z,   0.60,   3.66,   4.64,  99.90,   0.38,
06/29 20Z,   0.60,   4.84,   5.84,  99.90,   0.40,
06/29 21Z,   0.60,   5.80,   6.60,  99.90,   0.20,
06/29 22Z,   0.60,   6.00,   6.95,  99.90,   0.35,  (max)
06/29 23Z,   0.60,   5.44,   6.17,  99.90,   0.13,
06/30 00Z,   0.60,   4.58,   5.02,  99.90,  -0.16,
06/30 01Z,   0.60,   3.66,   3.96,  99.90,  -0.30,
06/30 02Z,   0.60,   2.71,   2.91,  99.90,  -0.40,
06/30 03Z,   0.60,   1.74,   1.82,  99.90,  -0.52,
06/30 04Z,   0.60,   1.02,   0.91,  99.90,  -0.71,  (min)
06/30 05Z,   0.60,   1.31,   1.19,  99.90,  -0.72,
06/30 06Z,   0.60,   2.70,   3.37,  99.90,   0.07,
06/30 07Z,   0.60,   4.23,   4.92,  99.90,   0.09,
06/30 08Z,   0.60,   5.37,   6.19,  99.90,   0.22,
06/30 09Z,   0.60,   6.28,   7.13,  99.90,   0.25,
06/30 10Z,   0.60,   6.66,   7.61,  99.90,   0.35,  (max)
06/30 11Z,   0.60,   6.22,   6.96,  99.90,   0.14,
06/30 12Z,   0.60,   5.36,   5.83,  99.90,  -0.13,
06/30 13Z,   0.60,   4.39,   4.72,  99.90,  -0.27,
06/30 14Z,   0.60,   3.36,   3.65,  99.90,  -0.31,
06/30 15Z,   0.60,   2.22,   2.54,  99.90,  -0.28,
06/30 16Z,   0.60,   1.05,   1.54,  99.90,  -0.11,
06/30 17Z,   0.60,   0.52,   0.78,  99.90,  -0.34,  (min)
06/30 18Z,   0.60,   1.24,   1.83,  99.90,  -0.01,
06/30 19Z,   0.60,   2.66,   3.93,  99.90,   0.67,
06/30 20Z,   0.70,   3.94,   5.24,  99.90,   0.60,
06/30 21Z,   0.70,   5.08,   6.41,  99.90,   0.63,
06/30 22Z,   0.70,   5.96,   7.29,  99.90,   0.63,
06/30 23Z,   0.70,   6.04,   7.31,  99.90,   0.57,  (max)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/01 00Z,   0.70,   5.40,  99.90,   6.61,   0.51,
07/01 01Z,   0.70,   4.49,  99.90,   5.64,   0.45,
07/01 02Z,   0.70,   3.52,  99.90,   4.60,   0.38,
07/01 03Z,   0.70,   2.55,  99.90,   3.57,   0.32,
07/01 04Z,   0.70,   1.61,  99.90,   2.57,   0.26,
07/01 05Z,   0.70,   1.01,  99.90,   1.91,   0.20,  (min)
07/01 06Z,   0.80,   1.49,  99.90,   2.43,   0.14,
07/01 07Z,   0.80,   2.91,  99.90,   3.78,   0.08,
07/01 08Z,   0.80,   4.28,  99.90,   5.09,   0.01,
07/01 09Z,   0.80,   5.31,  99.90,   6.06,  -0.05,
07/01 10Z,   0.80,   6.15,  99.90,   6.84,  -0.11,
07/01 11Z,   0.70,   6.43,  99.90,   6.95,  -0.17,  (max)
07/01 12Z,   0.70,   5.90,  99.90,   6.43,  -0.17,
07/01 13Z,   0.70,   4.97,  99.90,   5.50,  -0.17,
07/01 14Z,   0.70,   3.94,  99.90,   4.47,  -0.17,
07/01 15Z,   0.70,   2.88,  99.90,   3.41,  -0.17,
07/01 16Z,   0.70,   1.80,  99.90,   2.33,  -0.17,
07/01 17Z,   0.70,   0.81,  99.90,   1.34,  -0.17,
07/01 18Z,   0.70,   0.59,  99.90,   1.12,  -0.17,  (min)
07/01 19Z,   0.70,   1.57,  99.90,   2.10,  -0.17,
07/01 20Z,   0.60,   3.00,  99.90,   3.43,  -0.17,
07/01 21Z,   0.60,   4.22,  99.90,   4.65,  -0.17,
07/01 22Z,   0.60,   5.33,  99.90,   5.76,  -0.17,
07/01 23Z,   0.60,   6.13,  99.90,   6.56,  -0.17,  (max)
07/02 00Z,   0.60,   6.09,  99.90,   6.52,  -0.17,
07/02 01Z,   0.60,   5.37,  99.90,   5.80,  -0.17,
07/02 02Z,   0.60,   4.40,  99.90,   4.83,  -0.17,
07/02 03Z,   0.60,   3.38,  99.90,   3.81,  -0.17,
07/02 04Z,   0.60,   2.41,  99.90,   2.84,  -0.17,
07/02 05Z,   0.60,   1.49,  99.90,   1.92,  -0.17,
07/02 06Z,   0.60,   1.03,  99.90,   1.46,  -0.17,  (min)
07/02 07Z,   0.50,   1.65,  99.90,   1.98,  -0.17,
07/02 08Z,   0.50,   3.03,  99.90,   3.36,  -0.17,
07/02 09Z,   0.50,   4.24,  99.90,   4.57,  -0.17,
07/02 10Z,   0.40,   5.20,  99.90,   5.43,  -0.17,
07/02 11Z,   0.40,   6.01,  99.90,   6.24,  -0.17,
07/02 12Z,   0.40,   6.19,  99.90,   6.42,  -0.17,  (max)
07/02 13Z,   0.30,   5.58,  99.90,   5.70,  -0.17,
07/02 14Z,   0.40,   4.59,  99.90,   4.82,  -0.17,
07/02 15Z,   0.40,   3.52,  99.90,   3.75,  -0.17,
07/02 16Z,   0.40,   2.47,  99.90,   2.70,  -0.17,
07/02 17Z,   0.40,   1.46,  99.90,   1.69,  -0.17,
07/02 18Z,   0.40,   0.67,  99.90,   0.90,  -0.17,  (min)
07/02 19Z,   0.40,   0.75,  99.90,   0.98,  -0.17,
07/02 20Z,   0.40,   1.92,  99.90,   2.15,  -0.17,
07/02 21Z,   0.50,   3.34,  99.90,   3.67,  -0.17,
07/02 22Z,   0.50,   4.50,  99.90,   4.83,  -0.17,
07/02 23Z,   0.50,   5.60,  99.90,   5.93,  -0.17,
07/03 00Z,   0.50,   6.31,  99.90,   6.63,  -0.17,  (max)
07/03 01Z,   0.50,   6.14,  99.90,   6.47,  -0.17,
07/03 02Z,   0.50,   5.34,  99.90,   5.67,  -0.17,
07/03 03Z,   0.50,   4.31,  99.90,   4.64,  -0.17,
07/03 04Z,   0.50,   3.27,  99.90,   3.60,  -0.17,
07/03 05Z,   0.60,   2.29,  99.90,   2.72,  -0.17,
07/03 06Z,   0.60,   1.40,  99.90,   1.82,  -0.17,
07/03 07Z,   0.60,   1.04,  99.90,   1.47,  -0.17,  (min)
07/03 08Z,   0.60,   1.76,  99.90,   2.19,  -0.17,
07/03 09Z,   0.60,   3.06,  99.90,   3.49,  -0.17,
07/03 10Z,   0.60,   4.15,  99.90,   4.58,  -0.17,
07/03 11Z,   0.60,   5.08,  99.90,   5.51,  -0.17,
07/03 12Z,   0.60,   5.88,  99.90,   6.31,  -0.17,  (max)
07/03 13Z,   0.50,   5.97,  99.90,   6.30,  -0.17,
07/03 14Z,   0.50,   5.28,  99.90,   5.61,  -0.17,
07/03 15Z,   0.50,   4.25,  99.90,   4.58,  -0.17,
07/03 16Z,   0.50,   3.15,  99.90,   3.48,  -0.17,
07/03 17Z,   0.50,   2.14,  99.90,   2.47,  -0.17,
07/03 18Z,   0.50,   1.23,  99.90,   1.56,  -0.17,
07/03 19Z,   0.50,   0.63,  99.90,   0.96,  -0.17,  (min)
07/03 20Z,   0.50,   0.98,  99.90,   1.31,  -0.17,
07/03 21Z,   0.50,   2.28,  99.90,   2.61,  -0.17,
07/03 22Z,   0.50,   3.66,  99.90,   3.99,  -0.17,
07/03 23Z,   0.50,   4.79,  99.90,   5.12,  -0.17,
07/04 00Z,   0.50,   5.87,  99.90,   6.20,  -0.17,
07/04 01Z,   0.50,   6.48,  99.90,   6.81,  -0.17,  (max)
07/04 02Z,   0.50,   6.18,  99.90,   6.51,  -0.17,
07/04 03Z,   0.50,   5.31,  99.90,   5.64,  -0.17,
07/04 04Z,   0.60,   4.24,  99.90,   4.67,  -0.17,
07/04 05Z,   0.60,   3.18,  99.90,   3.61,  -0.17,
07/04 06Z,   0.60,   2.19,  99.90,   2.62,  -0.17,
07/04 07Z,   0.60,   1.30,  99.90,   1.73,  -0.17,
07/04 08Z,   0.60,   1.03,  99.90,   1.46,  -0.17,  (min)
07/04 09Z,   0.60,   1.81,  99.90,   2.24,  -0.17,
07/04 10Z,   0.50,   3.03,  99.90,   3.36,  -0.17,
07/04 11Z,   0.50,   4.04,  99.90,   4.37,  -0.17,
07/04 12Z,   0.50,   5.00,  99.90,   5.32,  -0.17,
07/04 13Z,   0.50,   5.78,  99.90,   6.11,  -0.17,
07/04 14Z,   0.50,   5.78,  99.90,   6.11,  -0.17,  (max)
07/04 15Z,   0.50,   5.03,  99.90,   5.36,  -0.17,
07/04 16Z,   0.50,   3.97,  99.90,   4.30,  -0.17,
07/04 17Z,   0.50,   2.88,  99.90,   3.21,  -0.17,
07/04 18Z,   0.50,   1.91,  99.90,   2.24,  -0.17,