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
Status
Stations
Port Heiden, AK
Egegik, AK
Naknek, AK
Clark's Pt, AK
Goodnews Bay
Quinhagak, AK
Kuskokwak, AK
Eek, Apokak, AK
Popokamute, AK
Scammon Bay AK
St. Lawrence, AK
Kwikluak, AK
Kawanak, AK
Apoon, Yukon, AK
St. Michaels, AK
Golovin, AK
Nome, AK
Port Clarence, AK
Kotzebue, AK
Pt. Barrow, AK
Prudhoe Bay, AK
St. Paul Island AK
Surge List
Norton Sound
Arctic Alaska
#Port Heiden, AK : 04/22/2026 04:21:08 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 12Z,   0.40,  13.06,  99.90,  13.46,   0.00,
04/20 13Z,   0.40,  13.73,  99.90,  14.13,   0.00,
04/20 14Z,   0.40,  13.79,  99.90,  14.19,   0.00,  (max)
04/20 15Z,   0.40,  13.54,  99.90,  13.94,   0.00,
04/20 16Z,   0.40,  12.70,  99.90,  13.10,   0.00,
04/20 17Z,   0.50,  11.04,  99.90,  11.54,   0.00,
04/20 18Z,   0.60,   8.77,  99.90,   9.37,   0.00,
04/20 19Z,   0.60,   6.63,  99.90,   7.23,   0.00,
04/20 20Z,   0.60,   5.81,  99.90,   6.41,   0.00,  (min)
04/20 21Z,   0.70,   6.74,  99.90,   7.44,   0.00,
04/20 22Z,   0.80,   8.39,  99.90,   9.19,   0.00,
04/20 23Z,   0.90,   9.47,  99.90,  10.37,   0.00,  (max)
04/21 00Z,   0.60,   9.76,  99.90,  10.36,   0.00,
04/21 01Z,   0.60,   9.76,  99.90,  10.36,   0.00,
04/21 02Z,   0.60,   9.44,  99.90,  10.04,   0.00,
04/21 03Z,   0.60,   8.37,  99.90,   8.97,   0.00,
04/21 04Z,   0.50,   6.31,  99.90,   6.81,   0.00,
04/21 05Z,   0.40,   3.36,  99.90,   3.76,   0.00,
04/21 06Z,  -0.10,   0.07,  99.90,  -0.03,   0.00,
04/21 07Z,  -0.20,  -2.51,  99.90,  -2.71,   0.00,
04/21 08Z,  -0.20,  -2.94,  99.90,  -3.14,   0.00,  (min)
04/21 09Z,  -0.20,  -0.47,  99.90,  -0.67,   0.00,
04/21 10Z,  -0.20,   3.98,  99.90,   3.78,   0.00,
04/21 11Z,  -0.10,   8.49,  99.90,   8.39,   0.00,
04/21 12Z,  -0.40,  11.72,  99.90,  11.32,   0.00,
04/21 13Z,  -0.40,  13.46,  99.90,  13.06,   0.00,
04/21 14Z,  -0.30,  14.12,  99.90,  13.82,   0.00,
04/21 15Z,  -0.20,  14.14,  99.90,  13.94,   0.00,  (max)
04/21 16Z,  -0.20,  13.83,  99.90,  13.63,   0.00,
04/21 17Z,  -0.10,  12.86,  99.90,  12.76,   0.00,
04/21 18Z,  -0.20,  11.03,  99.90,  10.83,   0.00,
04/21 19Z,  -0.20,   8.56,  99.90,   8.36,   0.00,
04/21 20Z,  -0.20,   6.34,  99.90,   6.14,   0.00,
04/21 21Z,  -0.20,   5.59,  99.90,   5.39,   0.00,  (min)
04/21 22Z,  -0.10,   6.64,  99.90,   6.54,   0.00,
04/21 23Z,   0.00,   8.37,  99.90,   8.37,   0.00,
04/22 00Z,   0.00,   9.47,  99.90,   9.47,   0.00,
04/22 01Z,   0.00,   9.78,  99.90,   9.78,   0.00,  (max)
04/22 02Z,  -0.10,   9.78,  99.90,   9.68,   0.00,
04/22 03Z,  -0.10,   9.43,  99.90,   9.33,   0.00,
04/22 04Z,  -0.10,   8.30,  99.90,   8.20,   0.00,
04/22 05Z,  -0.10,   6.16,  99.90,   6.06,   0.00,
04/22 06Z,  -0.10,   3.12,  99.90,   3.02,   0.00,
04/22 07Z,  -0.10,  -0.24,  99.90,  -0.34,   0.00,
04/22 08Z,  -0.10,  -2.78,  99.90,  -2.88,   0.00,
04/22 09Z,   0.00,  -3.02,  99.90,  -3.02,   0.00,  (min)
04/22 10Z,   0.10,  -0.30,  99.90,  -0.20,   0.00,
04/22 11Z,   0.30,   4.29,  99.90,   4.59,   0.00,
04/22 12Z,   0.40,   8.80,  99.90,   9.20,   0.00,
04/22 13Z,   0.50,  11.97,  99.90,  12.47,   0.00,
04/22 14Z,   0.60,  13.65,  99.90,  14.25,   0.00,
04/22 15Z,   0.60,  14.26,  99.90,  14.86,   0.00,  (max)
04/22 16Z,   0.60,  14.26,  99.90,  14.86,   0.00,
04/22 17Z,   0.50,  13.87,  99.90,  14.37,   0.00,
04/22 18Z,   0.50,  12.77,  99.90,  13.27,   0.00,
04/22 19Z,   0.50,  10.75,  99.90,  11.25,   0.00,
04/22 20Z,   0.60,   8.12,  99.90,   8.72,   0.00,
04/22 21Z,   0.60,   5.84,  99.90,   6.44,   0.00,
04/22 22Z,   0.60,   5.20,  99.90,   5.80,   0.00,  (min)
04/22 23Z,   0.60,   6.41,  99.90,   7.01,   0.00,
04/23 00Z,   0.70,   8.25,  99.90,   8.95,   0.00,
04/23 01Z,   0.70,   9.45,  99.90,  10.15,   0.00,
04/23 02Z,   0.70,   9.82,  99.90,  10.52,   0.00,
04/23 03Z,   0.80,   9.85,  99.90,  10.65,   0.00,  (max)
04/23 04Z,   0.80,   9.50,  99.90,  10.30,   0.00,
04/23 05Z,   0.80,   8.40,  99.90,   9.20,   0.00,
04/23 06Z,   0.80,   6.29,  99.90,   7.09,   0.00,
04/23 07Z,   0.80,   3.28,  99.90,   4.08,   0.00,
04/23 08Z,   0.80,  -0.07,  99.90,   0.73,   0.00,
04/23 09Z,   0.80,  -2.56,  99.90,  -1.76,   0.00,
04/23 10Z,   0.80,  -2.67,  99.90,  -1.87,   0.00,  (min)
04/23 11Z,   0.90,   0.16,  99.90,   1.06,   0.00,
04/23 12Z,   0.90,   4.72,  99.90,   5.62,   0.00,
04/23 13Z,   0.80,   9.08,  99.90,   9.88,   0.00,
04/23 14Z,   0.70,  12.09,  99.90,  12.79,   0.00,
04/23 15Z,   0.50,  13.66,  99.90,  14.16,   0.00,
04/23 16Z,   0.40,  14.19,  99.90,  14.59,   0.00,  (max)
04/23 17Z,   0.20,  14.14,  99.90,  14.34,   0.00,
04/23 18Z,   0.10,  13.67,  99.90,  13.77,   0.00,
04/23 19Z,   0.00,  12.43,  99.90,  12.43,   0.00,
04/23 20Z,   0.00,  10.24,  99.90,  10.24,   0.00,
04/23 21Z,   0.00,   7.46,  99.90,   7.46,   0.00,
04/23 22Z,   0.00,   5.16,  99.90,   5.16,   0.00,
04/23 23Z,   0.00,   4.65,  99.90,   4.65,   0.00,  (min)
04/24 00Z,   0.10,   6.04,  99.90,   6.14,   0.00,
04/24 01Z,   0.20,   8.04,  99.90,   8.24,   0.00,
04/24 02Z,   0.20,   9.39,  99.90,   9.59,   0.00,
04/24 03Z,   0.30,   9.87,  99.90,  10.17,   0.00,
04/24 04Z,   0.30,   9.93,  99.90,  10.23,   0.00,  (max)
04/24 05Z,   0.20,   9.64,  99.90,   9.84,   0.00,
04/24 06Z,   0.20,   8.64,  99.90,   8.84,   0.00,
04/24 07Z,   0.10,   6.68,  99.90,   6.78,   0.00,
04/24 08Z,   0.10,   3.81,  99.90,   3.91,   0.00,
04/24 09Z,   0.00,   0.56,  99.90,   0.56,   0.00,
04/24 10Z,   0.00,  -1.86,  99.90,  -1.86,   0.00,
04/24 11Z,   0.00,  -1.90,  99.90,  -1.90,   0.00,  (min)
04/24 12Z,  -0.10,   0.90,  99.90,   0.80,   0.00,
04/24 13Z,  -0.10,   5.26,  99.90,   5.16,   0.00,
04/24 14Z,  -0.10,   9.34,  99.90,   9.24,   0.00,
04/24 15Z,  -0.10,  12.11,  99.90,  12.01,   0.00,
04/24 16Z,   0.00,  13.50,  99.90,  13.50,   0.00,
04/24 17Z,   0.00,  13.94,  99.90,  13.94,   0.00,  (max)
04/24 18Z,   0.00,  13.84,  99.90,  13.84,   0.00,
04/24 19Z,   0.00,  13.27,  99.90,  13.27,   0.00,
04/24 20Z,   0.00,  11.88,  99.90,  11.88,   0.00,
04/24 21Z,   0.00,   9.52,  99.90,   9.52,   0.00,
04/24 22Z,   0.00,   6.60,  99.90,   6.60,   0.00,
04/24 23Z,   0.00,   4.32,  99.90,   4.32,   0.00,
04/25 00Z,  -0.10,   3.96,  99.90,   3.86,   0.00,  (min)
04/25 01Z,  -0.10,   5.55,  99.90,   5.45,   0.00,
04/25 02Z,  -0.20,   7.74,  99.90,   7.54,   0.00,
04/25 03Z,  -0.20,   9.29,  99.90,   9.09,   0.00,
04/25 04Z,  -0.20,   9.92,  99.90,   9.72,   0.00,
04/25 05Z,  -0.10,  10.04,  99.90,   9.94,   0.00,  (max)
04/25 06Z,  -0.10,   9.83,  99.90,   9.73,   0.00,
04/25 07Z,   0.00,   8.99,  99.90,   8.99,   0.00,
04/25 08Z,   0.00,   7.27,  99.90,   7.27,   0.00,
04/25 09Z,   0.00,   4.63,  99.90,   4.63,   0.00,
04/25 10Z,   0.00,   1.56,  99.90,   1.56,   0.00,
04/25 11Z,  -0.10,  -0.75,  99.90,  -0.85,   0.00,
04/25 12Z,  -0.10,  -0.78,  99.90,  -0.88,   0.00,  (min)
04/25 13Z,  -0.10,   1.88,  99.90,   1.78,   0.00,
04/25 14Z,  -0.20,   5.92,  99.90,   5.72,   0.00,
04/25 15Z,  -0.20,   9.60,  99.90,   9.40,   0.00,
04/25 16Z,  -0.20,  12.03,  99.90,  11.83,   0.00,
04/25 17Z,  -0.10,  13.20,  99.90,  13.10,   0.00,
04/25 18Z,  -0.10,  13.52,  99.90,  13.42,   0.00,
04/25 19Z,  99.90,  13.37,  99.90,  99.90,   0.00,
04/25 20Z,  99.90,  12.69,  99.90,  99.90,   0.00,
04/25 21Z,  99.90,  11.14,  99.90,  99.90,   0.00,
04/25 22Z,  99.90,   8.61,  99.90,  99.90,   0.00,
04/25 23Z,  99.90,   5.58,  99.90,  99.90,   0.00,
04/26 00Z,  99.90,   3.36,  99.90,  99.90,   0.00,