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
#Anchorage, AK : 04/18/2026 18:22:01 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/17 00Z,  -0.40, -23.10,  99.90, -24.29,  -0.79,
04/17 01Z,  -0.40, -15.16,  99.90, -16.35,  -0.79,
04/17 02Z,  -0.40,  -8.93,  99.90, -10.13,  -0.79,
04/17 03Z,  -0.40,  -5.18,  99.90,  -6.38,  -0.79,
04/17 04Z,  -0.40,  -4.92,  99.90,  -6.11,  -0.79,  (max)
04/17 05Z,  -0.40,  -7.86,  99.90,  -9.05,  -0.79,
04/17 06Z,  -0.40, -12.77,  99.90, -13.96,  -0.79,
04/17 07Z,  -0.40, -18.46,  99.90, -19.65,  -0.79,
04/17 08Z,  -0.40, -23.94,  99.90, -25.13,  -0.79,
04/17 09Z,  -0.30, -28.73,  99.90, -29.82,  -0.79,
04/17 10Z,  -0.30, -31.44,  99.90, -32.53,  -0.79,  (min)
04/17 11Z,  -0.30, -29.14,  99.90, -30.23,  -0.79,
04/17 12Z,  -0.30, -21.68,  99.90, -22.77,  -0.79,
04/17 13Z,  -0.30, -13.19,  99.90, -14.28,  -0.79,
04/17 14Z,  -0.20,  -6.91,  99.90,  -7.90,  -0.79,
04/17 15Z,  -0.20,  -3.50,  99.90,  -4.49,  -0.79,
04/17 16Z,  -0.20,  -3.40,  99.90,  -4.39,  -0.79,  (max)
04/17 17Z,  -0.20,  -6.52,  99.90,  -7.51,  -0.79,
04/17 18Z,  -0.20, -11.61,  99.90, -12.60,  -0.79,
04/17 19Z,  -0.20, -17.62,  99.90, -18.62,  -0.79,
04/17 20Z,  -0.20, -23.78,  99.90, -24.78,  -0.79,
04/17 21Z,  -0.20, -29.63,  99.90, -30.62,  -0.79,
04/17 22Z,  -0.20, -34.39,  99.90, -35.38,  -0.79,
04/17 23Z,  -0.20, -35.20,  99.90, -36.19,  -0.79,  (min)
04/18 00Z,  -0.20, -29.82,  99.90, -30.82,  -0.79,
04/18 01Z,  -0.20, -20.85,  99.90, -21.84,  -0.79,
04/18 02Z,  -0.20, -12.61,  99.90, -13.60,  -0.79,
04/18 03Z,  -0.10,  -6.82,  99.90,  -7.71,  -0.79,
04/18 04Z,  -0.10,  -4.08,  99.90,  -4.98,  -0.79,  (max)
04/18 05Z,  -0.10,  -4.95,  99.90,  -5.85,  -0.79,
04/18 06Z,  -0.10,  -8.66,  99.90,  -9.55,  -0.79,
04/18 07Z,  -0.10, -13.94,  99.90, -14.83,  -0.79,
04/18 08Z,  -0.10, -19.75,  99.90, -20.64,  -0.79,
04/18 09Z,  -0.10, -25.14,  99.90, -26.03,  -0.79,
04/18 10Z,  -0.10, -29.49,  99.90, -30.38,  -0.79,
04/18 11Z,  -0.10, -30.92,  99.90, -31.82,  -0.79,  (min)
04/18 12Z,  -0.10, -26.69,  99.90, -27.59,  -0.79,
04/18 13Z,  -0.10, -17.88,  99.90, -18.77,  -0.79,
04/18 14Z,  -0.10,  -9.32,  99.90, -10.21,  -0.79,
04/18 15Z,  -0.10,  -3.97,  99.90,  -4.87,  -0.79,
04/18 16Z,  -0.10,  -2.11,  99.90,  -3.00,  -0.79,  (max)
04/18 17Z,   0.00,  -3.72,  99.90,  -4.51,  -0.79,
04/18 18Z,   0.00,  -8.11,  99.90,  -8.91,  -0.79,
04/18 19Z,  -0.10, -13.92,  99.90, -14.82,  -0.79,
04/18 20Z,  -0.10, -20.28,  99.90, -21.17,  -0.79,
04/18 21Z,  -0.10, -26.54,  99.90, -27.43,  -0.79,
04/18 22Z,  -0.10, -32.22,  99.90, -33.11,  -0.79,
04/18 23Z,  -0.20, -36.13,  99.90, -37.12,  -0.79,  (min)
04/19 00Z,  -0.20, -35.19,  99.90, -36.18,  -0.79,
04/19 01Z,  -0.20, -28.05,  99.90, -29.04,  -0.79,
04/19 02Z,  -0.20, -18.36,  99.90, -19.36,  -0.79,
04/19 03Z,  -0.20, -10.43,  99.90, -11.42,  -0.79,
04/19 04Z,  -0.20,  -5.48,  99.90,  -6.47,  -0.79,
04/19 05Z,  -0.10,  -3.83,  99.90,  -4.72,  -0.79,  (max)
04/19 06Z,  -0.10,  -5.59,  99.90,  -6.49,  -0.79,
04/19 07Z,   0.00,  -9.77,  99.90, -10.56,  -0.79,
04/19 08Z,   0.00, -15.25,  99.90, -16.04,  -0.79,
04/19 09Z,   0.00, -21.05,  99.90, -21.85,  -0.79,
04/19 10Z,   0.00, -26.21,  99.90, -27.01,  -0.79,
04/19 11Z,   0.00, -29.86,  99.90, -30.65,  -0.79,  (min)
04/19 12Z,   0.00, -29.79,  99.90, -30.58,  -0.79,
04/19 13Z,   0.10, -23.80,  99.90, -24.49,  -0.79,
04/19 14Z,   0.10, -14.24,  99.90, -14.93,  -0.79,
04/19 15Z,   0.10,  -6.29,  99.90,  -6.98,  -0.79,
04/19 16Z,   0.10,  -2.26,  99.90,  -2.96,  -0.79,
04/19 17Z,   0.10,  -1.92,  99.90,  -2.61,  -0.79,  (max)
04/19 18Z,   0.20,  -4.85,  99.90,  -5.44,  -0.79,
04/19 19Z,   0.20, -10.05,  99.90, -10.64,  -0.79,
04/19 20Z,   0.20, -16.24,  99.90, -16.84,  -0.79,
04/19 21Z,   0.10, -22.76,  99.90, -23.46,  -0.79,
04/19 22Z,   0.10, -28.93,  99.90, -29.63,  -0.79,
04/19 23Z,   0.10, -34.16,  99.90, -34.85,  -0.79,
04/20 00Z,   0.10, -36.92,  99.90, -37.61,  -0.79,  (min)
04/20 01Z,   0.10, -34.23,  99.90, -34.92,  -0.79,
04/20 02Z,   0.10, -25.84,  99.90, -26.53,  -0.79,
04/20 03Z,   0.20, -16.17,  99.90, -16.77,  -0.79,
04/20 04Z,   0.30,  -9.06,  99.90,  -9.55,  -0.79,
04/20 05Z,   0.30,  -5.09,  99.90,  -5.58,  -0.79,
04/20 06Z,   0.40,  -4.32,  99.90,  -4.71,  -0.79,  (max)
04/20 07Z,   0.40,  -6.62,  99.90,  -7.01,  -0.79,
04/20 08Z,   0.40, -11.01,  99.90, -11.40,  -0.79,
04/20 09Z,   0.40, -16.55,  99.90, -16.95,  -0.79,
04/20 10Z,   0.50, -22.24,  99.90, -22.54,  -0.79,
04/20 11Z,   0.50, -26.98,  99.90, -27.27,  -0.79,
04/20 12Z,   0.60, -29.71,  99.90, -29.91,  -0.79,  (min)
04/20 13Z,   0.70, -28.16,  99.90, -28.25,  -0.79,
04/20 14Z,   0.70, -20.93,  99.90, -21.02,  -0.79,
04/20 15Z,   0.80, -11.41,  99.90, -11.41,  -0.79,
04/20 16Z,   1.00,  -4.63,  99.90,  -4.42,  -0.79,
04/20 17Z,   1.00,  -1.98,  99.90,  -1.77,  -0.79,  (max)
04/20 18Z,   1.00,  -2.79,  99.90,  -2.58,  -0.79,
04/20 19Z,   1.10,  -6.48,  99.90,  -6.17,  -0.79,
04/20 20Z,   1.10, -11.99,  99.90, -11.69,  -0.79,
04/20 21Z,   1.10, -18.30,  99.90, -17.99,  -0.79,
04/20 22Z,   1.00, -24.76,  99.90, -24.55,  -0.79,
04/20 23Z,   1.00, -30.59,  99.90, -30.38,  -0.79,
04/21 00Z,   1.00, -35.10,  99.90, -34.89,  -0.79,
04/21 01Z,   1.10, -36.63,  99.90, -36.33,  -0.79,  (min)
04/21 02Z,   1.20, -32.56,  99.90, -32.15,  -0.79,
04/21 03Z,   1.30, -23.70,  99.90, -23.19,  -0.79,
04/21 04Z,   1.30, -14.77,  99.90, -14.26,  -0.79,
04/21 05Z,   1.40,  -8.74,  99.90,  -8.13,  -0.79,
04/21 06Z,   1.40,  -5.59,  99.90,  -4.99,  -0.79,
04/21 07Z,   1.40,  -5.33,  99.90,  -4.72,  -0.79,  (max)
04/21 08Z,   1.30,  -7.81,  99.90,  -7.31,  -0.79,
04/21 09Z,   1.20, -12.22,  99.90, -11.81,  -0.79,
04/21 10Z,   1.20, -17.69,  99.90, -17.29,  -0.79,
04/21 11Z,   1.10, -23.06,  99.90, -22.76,  -0.79,
04/21 12Z,   1.00, -27.19,  99.90, -26.98,  -0.79,
04/21 13Z,   0.90, -29.00,  99.90, -28.90,  -0.79,  (min)
04/21 14Z,   0.80, -26.34,  99.90, -26.33,  -0.79,
04/21 15Z,   0.70, -18.65,  99.90, -18.74,  -0.79,
04/21 16Z,   0.70,  -9.96,  99.90, -10.05,  -0.79,
04/21 17Z,   0.70,  -4.59,  99.90,  -4.69,  -0.79,
04/21 18Z,   0.60,  -3.03,  99.90,  -3.22,  -0.79,  (max)
04/21 19Z,   0.60,  -4.40,  99.90,  -4.60,  -0.79,
04/21 20Z,   0.50,  -8.25,  99.90,  -8.55,  -0.79,
04/21 21Z,   0.40, -13.67,  99.90, -14.06,  -0.79,
04/21 22Z,   0.30, -19.79,  99.90, -20.29,  -0.79,
04/21 23Z,   0.20, -25.91,  99.90, -26.51,  -0.79,
04/22 00Z,   0.20, -31.15,  99.90, -31.74,  -0.79,
04/22 01Z,   0.10, -34.88,  99.90, -35.57,  -0.79,
04/22 02Z,   0.10, -35.43,  99.90, -36.12,  -0.79,  (min)
04/22 03Z,   0.10, -30.66,  99.90, -31.35,  -0.79,
04/22 04Z,   0.10, -22.17,  99.90, -22.86,  -0.79,
04/22 05Z,   0.10, -14.45,  99.90, -15.14,  -0.79,
04/22 06Z,   0.10,  -9.44,  99.90, -10.13,  -0.79,
04/22 07Z,   0.10,  -6.75,  99.90,  -7.44,  -0.79,
04/22 08Z,   0.00,  -6.58,  99.90,  -7.37,  -0.79,  (max)
04/22 09Z,   0.00,  -8.95,  99.90,  -9.74,  -0.79,
04/22 10Z,   0.00, -13.17,  99.90, -13.97,  -0.79,
04/22 11Z,   0.00, -18.37,  99.90, -19.17,  -0.79,
04/22 12Z,  -0.10, -23.23,  99.90, -24.12,  -0.79,