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

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Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
Mid-Atlantic
Southeast
Gulf
Northwest
Alaska
Gulf of Alaska
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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
#Nome, Norton Sound, AK : 04/20/2025 14:21:52 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/18 18Z,   0.00,   1.24,   1.56,  99.90,   0.32,  (max)
04/18 19Z,   0.00,   1.29,   1.48,  99.90,   0.19,  (min)
04/18 20Z,   0.10,   1.28,   1.49,  99.90,   0.11,
04/18 21Z,   0.10,   1.24,   1.65,  99.90,   0.31,
04/18 22Z,   0.10,   1.17,   1.70,  99.90,   0.43,  (max)
04/18 23Z,   0.20,   1.12,   1.65,  99.90,   0.33,  (min)
04/19 00Z,   0.20,   1.12,   1.76,  99.90,   0.44,
04/19 01Z,   0.20,   1.16,   1.93,  99.90,   0.57,  0.13 ft above HAT
04/19 02Z,   0.20,   1.20,   2.01,  99.90,   0.61,  0.21 ft above HAT
04/19 03Z,   0.30,   1.20,   2.10,  99.90,   0.60,  0.30 ft above HAT  (max)
04/19 04Z,   0.30,   1.15,   2.06,  99.90,   0.61,  0.26 ft above HAT
04/19 05Z,   0.30,   1.07,   2.03,  99.90,   0.66,  0.23 ft above HAT
04/19 06Z,   0.30,   0.95,   1.96,  99.90,   0.71,  0.16 ft above HAT
04/19 07Z,   0.30,   0.77,   1.92,  99.90,   0.85,  0.12 ft above HAT
04/19 08Z,   0.30,   0.58,   1.80,  99.90,   0.92,  0.00 ft above HAT
04/19 09Z,   0.30,   0.39,   1.60,  99.90,   0.91,
04/19 10Z,   0.30,   0.21,   1.49,  99.90,   0.98,
04/19 11Z,   0.30,   0.07,   1.40,  99.90,   1.03,
04/19 12Z,   0.30,   0.02,   1.40,  99.90,   1.08,  (min)
04/19 13Z,   0.20,   0.07,   1.44,  99.90,   1.17,
04/19 14Z,   0.20,   0.23,   1.52,  99.90,   1.09,
04/19 15Z,   0.10,   0.43,   1.68,  99.90,   1.15,
04/19 16Z,   0.10,   0.66,   1.81,  99.90,   1.05,  0.01 ft above HAT
04/19 17Z,   0.10,   0.89,   1.89,  99.90,   0.90,  0.09 ft above HAT
04/19 18Z,   0.00,   1.10,   1.95,  99.90,   0.85,  0.15 ft above HAT  (max)
04/19 19Z,   0.00,   1.22,   1.91,  99.90,   0.69,  0.11 ft above HAT
04/19 20Z,   0.00,   1.27,   1.87,  99.90,   0.60,  0.07 ft above HAT
04/19 21Z,   0.00,   1.26,   1.85,  99.90,   0.59,  0.05 ft above HAT
04/19 22Z,   0.00,   1.23,   1.79,  99.90,   0.56,
04/19 23Z,  -0.10,   1.17,   1.67,  99.90,   0.60,
04/20 00Z,  -0.10,   1.13,   1.67,  99.90,   0.64,  (min)
04/20 01Z,  -0.20,   1.14,   1.79,  99.90,   0.85,
04/20 02Z,  -0.20,   1.18,   1.80,  99.90,   0.82,  0.00 ft above HAT
04/20 03Z,  -0.30,   1.20,   1.84,  99.90,   0.94,  0.04 ft above HAT  (max)
04/20 04Z,  -0.30,   1.17,   1.83,  99.90,   0.96,  0.03 ft above HAT
04/20 05Z,  -0.30,   1.10,   1.76,  99.90,   0.96,
04/20 06Z,  -0.40,   1.02,   1.57,  99.90,   0.95,
04/20 07Z,  -0.40,   0.90,   1.54,  99.90,   1.04,
04/20 08Z,  -0.50,   0.74,   1.34,  99.90,   1.10,
04/20 09Z,  -0.50,   0.56,   1.18,  99.90,   1.12,
04/20 10Z,  -0.50,   0.38,   0.95,  99.90,   1.07,
04/20 11Z,  -0.60,   0.22,   0.75,  99.90,   1.13,
04/20 12Z,  -0.60,   0.10,   0.70,  99.90,   1.20,
04/20 13Z,  -0.60,   0.05,   0.68,  99.90,   1.23,  (min)
04/20 14Z,  -0.60,   0.12,   0.79,  99.90,   1.27,  (max)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 15Z,  -0.70,   0.28,  99.90,   0.76,   1.19,  (min)
04/20 16Z,  -0.70,   0.48,  99.90,   0.88,   1.10,
04/20 17Z,  -0.80,   0.69,  99.90,   0.92,   1.02,
04/20 18Z,  -0.80,   0.91,  99.90,   1.06,   0.94,
04/20 19Z,  -0.80,   1.10,  99.90,   1.16,   0.86,
04/20 20Z,  -0.80,   1.21,  99.90,   1.19,   0.78,  (max)
04/20 21Z,  -0.80,   1.25,  99.90,   1.15,   0.70,
04/20 22Z,  -0.80,   1.24,  99.90,   1.06,   0.62,
04/20 23Z,  -0.90,   1.21,  99.90,   0.84,   0.54,
04/21 00Z,  -0.90,   1.16,  99.90,   0.71,   0.45,
04/21 01Z,  -0.90,   1.13,  99.90,   0.60,   0.37,
04/21 02Z,  -0.90,   1.13,  99.90,   0.53,   0.29,  (min)
04/21 03Z,  -0.90,   1.16,  99.90,   0.56,   0.29,
04/21 04Z,  -0.90,   1.17,  99.90,   0.56,   0.29,  (max)
04/21 05Z,  -1.00,   1.13,  99.90,   0.42,   0.29,
04/21 06Z,  -1.00,   1.07,  99.90,   0.37,   0.29,
04/21 07Z,  -1.00,   1.00,  99.90,   0.29,   0.29,
04/21 08Z,  -0.90,   0.89,  99.90,   0.28,   0.29,
04/21 09Z,  -0.90,   0.74,  99.90,   0.13,   0.29,
04/21 10Z,  -0.90,   0.56,  99.90,  -0.04,   0.29,
04/21 11Z,  -0.90,   0.40,  99.90,  -0.21,   0.29,
04/21 12Z,  -0.90,   0.23,  99.90,  -0.37,   0.29,
04/21 13Z,  -0.80,   0.11,  99.90,  -0.40,   0.29,
04/21 14Z,  -0.80,   0.08,  99.90,  -0.43,   0.29,  (min)
04/21 15Z,  -0.80,   0.16,  99.90,  -0.35,   0.29,
04/21 16Z,  -0.70,   0.32,  99.90,  -0.09,   0.29,
04/21 17Z,  -0.70,   0.51,  99.90,   0.11,   0.29,
04/21 18Z,  -0.70,   0.73,  99.90,   0.32,   0.29,
04/21 19Z,  -0.60,   0.95,  99.90,   0.64,   0.29,
04/21 20Z,  -0.60,   1.12,  99.90,   0.81,   0.29,
04/21 21Z,  -0.50,   1.21,  99.90,   1.01,   0.29,
04/21 22Z,  -0.50,   1.24,  99.90,   1.03,   0.29,  (max)
04/21 23Z,  -0.50,   1.22,  99.90,   1.01,   0.29,
04/22 00Z,  -0.50,   1.18,  99.90,   0.97,   0.29,  (min)
04/22 01Z,  -0.40,   1.12,  99.90,   1.02,   0.29,  (max)
04/22 02Z,  -0.40,   1.09,  99.90,   0.98,   0.29,  (min)
04/22 03Z,  -0.40,   1.10,  99.90,   0.99,   0.29,
04/22 04Z,  -0.40,   1.13,  99.90,   1.02,   0.29,
04/22 05Z,  -0.40,   1.13,  99.90,   1.02,   0.29,  (max)
04/22 06Z,  -0.40,   1.10,  99.90,   1.00,   0.29,  (min)
04/22 07Z,  -0.30,   1.06,  99.90,   1.05,   0.29,  (max)
04/22 08Z,  -0.30,   1.00,  99.90,   1.00,   0.29,
04/22 09Z,  -0.30,   0.90,  99.90,   0.89,   0.29,
04/22 10Z,  -0.30,   0.75,  99.90,   0.75,   0.29,
04/22 11Z,  -0.30,   0.58,  99.90,   0.57,   0.29,
04/22 12Z,  -0.30,   0.40,  99.90,   0.39,   0.29,
04/22 13Z,  -0.30,   0.23,  99.90,   0.22,   0.29,
04/22 14Z,  -0.30,   0.10,  99.90,   0.09,   0.29,
04/22 15Z,  -0.30,   0.08,  99.90,   0.07,   0.29,  (min)
04/22 16Z,  -0.20,   0.18,  99.90,   0.27,   0.29,
04/22 17Z,  -0.20,   0.36,  99.90,   0.45,   0.29,
04/22 18Z,  -0.20,   0.57,  99.90,   0.66,   0.29,
04/22 19Z,  -0.20,   0.80,  99.90,   0.89,   0.29,
04/22 20Z,  -0.20,   1.01,  99.90,   1.11,   0.29,
04/22 21Z,  -0.20,   1.17,  99.90,   1.26,   0.29,
04/22 22Z,  -0.20,   1.24,  99.90,   1.33,   0.29,  (max)
04/22 23Z,  -0.20,   1.23,  99.90,   1.33,   0.29,
04/23 00Z,  -0.20,   1.19,  99.90,   1.28,   0.29,
04/23 01Z,  -0.20,   1.13,  99.90,   1.22,   0.29,
04/23 02Z,  -0.20,   1.06,  99.90,   1.15,   0.29,
04/23 03Z,  -0.20,   1.02,  99.90,   1.11,   0.29,  (min)
04/23 04Z,  -0.20,   1.03,  99.90,   1.12,   0.29,
04/23 05Z,  -0.20,   1.06,  99.90,   1.15,   0.29,
04/23 06Z,  -0.20,   1.08,  99.90,   1.17,   0.29,  (max)
04/23 07Z,  -0.20,   1.08,  99.90,   1.17,   0.29,
04/23 08Z,  -0.20,   1.06,  99.90,   1.16,   0.29,
04/23 09Z,  -0.20,   1.03,  99.90,   1.12,   0.29,
04/23 10Z,  -0.20,   0.93,  99.90,   1.02,   0.29,
04/23 11Z,  -0.20,   0.78,  99.90,   0.87,   0.29,
04/23 12Z,  -0.20,   0.59,  99.90,   0.68,   0.29,
04/23 13Z,  -0.20,   0.39,  99.90,   0.48,   0.29,
04/23 14Z,  -0.20,   0.21,  99.90,   0.30,   0.29,
04/23 15Z,  -0.30,   0.09,  99.90,   0.08,   0.29,  (min)
04/23 16Z,  -0.30,   0.09,  99.90,   0.08,   0.29,
04/23 17Z,  -0.30,   0.22,  99.90,   0.21,   0.29,
04/23 18Z,  -0.30,   0.43,  99.90,   0.42,   0.29,
04/23 19Z,  -0.30,   0.67,  99.90,   0.66,   0.29,
04/23 20Z,  -0.30,   0.91,  99.90,   0.90,   0.29,
04/23 21Z,  -0.30,   1.12,  99.90,   1.11,   0.29,
04/23 22Z,  -0.30,   1.25,  99.90,   1.24,   0.29,  (max)
04/23 23Z,  -0.40,   1.27,  99.90,   1.17,   0.29,
04/24 00Z,  -0.40,   1.23,  99.90,   1.12,   0.29,
04/24 01Z,  -0.40,   1.14,  99.90,   1.03,   0.29,
04/24 02Z,  -0.40,   1.04,  99.90,   0.93,   0.29,
04/24 03Z,  -0.40,   0.94,  99.90,   0.83,   0.29,
04/24 04Z,  -0.40,   0.89,  99.90,   0.78,   0.29,
04/24 05Z,  -0.50,   0.91,  99.90,   0.70,   0.29,  (min)
04/24 06Z,  -0.50,   0.96,  99.90,   0.76,   0.29,