EXTRA-TROPICAL  STORM  SURGE
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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
Cherry Point, WA
Friday Harbor WA
Port Townsend
Seattle, WA
Port Angeles, WA
Neah Bay, WA
Toke Point, WA
Astoria, OR
South Beach, OR
Charleston, OR
Port Orford, OR
Crescent City, CA
North Spit, CA
Arena Cove, CA
Point Reyes, CA
Port Chicago, CA
San Francisco CA
Surge List
West Coast
#Seattle, WA : 04/20/2026 09:20:19 GMT (units in feet MSL)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/18 18Z,   0.50,  -7.48,  -6.95,  99.90,   0.03,
04/18 19Z,   0.50,  -8.71,  -8.26,  99.90,  -0.05,  (min)
04/18 20Z,   0.50,  -8.28,  -7.71,  99.90,   0.07,
04/18 21Z,   0.50,  -6.34,  -5.85,  99.90,  -0.01,
04/18 22Z,   0.60,  -3.47,  -3.22,  99.90,  -0.35,
04/18 23Z,   0.60,  -0.35,  -0.14,  99.90,  -0.39,
04/19 00Z,   0.60,   2.37,   2.46,  99.90,  -0.51,
04/19 01Z,   0.60,   4.23,   4.23,  99.90,  -0.60,
04/19 02Z,   0.60,   4.97,   5.00,  99.90,  -0.57,  (max)
04/19 03Z,   0.60,   4.69,   4.75,  99.90,  -0.54,
04/19 04Z,   0.70,   3.64,   3.92,  99.90,  -0.42,
04/19 05Z,   0.70,   2.12,   2.73,  99.90,  -0.09,
04/19 06Z,   0.60,   0.56,   1.20,  99.90,   0.04,
04/19 07Z,   0.60,  -0.53,   0.10,  99.90,   0.03,
04/19 08Z,   0.60,  -0.69,  -0.01,  99.90,   0.08,  (min)
04/19 09Z,   0.60,   0.14,   0.80,  99.90,   0.06,
04/19 10Z,   0.60,   1.62,   2.19,  99.90,  -0.03,
04/19 11Z,   0.60,   3.25,   3.81,  99.90,  -0.04,
04/19 12Z,   0.60,   4.53,   5.19,  99.90,   0.06,
04/19 13Z,   0.60,   5.01,   5.77,  99.90,   0.16,  (max)
04/19 14Z,   0.60,   4.35,   5.10,  99.90,   0.15,
04/19 15Z,   0.60,   2.54,   3.43,  99.90,   0.29,
04/19 16Z,   0.60,  -0.16,   0.79,  99.90,   0.35,
04/19 17Z,   0.60,  -3.32,  -2.51,  99.90,   0.21,
04/19 18Z,   0.70,  -6.38,  -5.71,  99.90,  -0.03,
04/19 19Z,   0.70,  -8.64,  -7.93,  99.90,   0.01,
04/19 20Z,   0.70,  -9.44,  -8.78,  99.90,  -0.04,  (min)
04/19 21Z,   0.70,  -8.51,  -7.73,  99.90,   0.08,
04/19 22Z,   0.70,  -6.17,  -5.57,  99.90,  -0.10,
04/19 23Z,   0.70,  -3.07,  -2.65,  99.90,  -0.28,
04/20 00Z,   0.70,   0.11,   0.46,  99.90,  -0.35,
04/20 01Z,   0.70,   2.77,   3.03,  99.90,  -0.44,
04/20 02Z,   0.80,   4.49,   4.67,  99.90,  -0.62,
04/20 03Z,   0.80,   5.12,   5.34,  99.90,  -0.58,  (max)
04/20 04Z,   0.80,   4.81,   5.10,  99.90,  -0.51,
04/20 05Z,   0.80,   3.81,   4.34,  99.90,  -0.27,
04/20 06Z,   0.80,   2.44,   3.22,  99.90,  -0.02,
04/20 07Z,   0.80,   1.06,   1.91,  99.90,   0.05,
04/20 08Z,   0.80,   0.20,   0.98,  99.90,  -0.02,  (min)
04/20 09Z,   0.80,   0.19,   1.01,  99.90,   0.02,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 10Z,   0.70,   1.03,  99.90,   1.73,   0.00,
04/20 11Z,   0.70,   2.34,  99.90,   3.02,  -0.01,
04/20 12Z,   0.70,   3.66,  99.90,   4.33,  -0.03,
04/20 13Z,   0.70,   4.56,  99.90,   5.22,  -0.04,
04/20 14Z,   0.70,   4.63,  99.90,   5.28,  -0.05,  (max)
04/20 15Z,   0.70,   3.63,  99.90,   4.26,  -0.07,
04/20 16Z,   0.70,   1.59,  99.90,   2.20,  -0.08,
04/20 17Z,   0.70,  -1.21,  99.90,  -0.61,  -0.10,
04/20 18Z,   0.70,  -4.33,  99.90,  -3.74,  -0.11,
04/20 19Z,   0.70,  -7.20,  99.90,  -6.62,  -0.13,
04/20 20Z,   0.80,  -9.13,  99.90,  -8.47,  -0.14,
04/20 21Z,   0.80,  -9.54,  99.90,  -8.89,  -0.16,  (min)
04/20 22Z,   0.80,  -8.28,  99.90,  -7.64,  -0.16,
04/20 23Z,   0.80,  -5.78,  99.90,  -5.13,  -0.16,
04/21 00Z,   0.80,  -2.67,  99.90,  -2.02,  -0.16,
04/21 01Z,   0.80,   0.40,  99.90,   1.04,  -0.16,
04/21 02Z,   0.80,   2.90,  99.90,   3.54,  -0.16,
04/21 03Z,   0.80,   4.47,  99.90,   5.11,  -0.16,
04/21 04Z,   0.80,   5.03,  99.90,   5.67,  -0.16,  (max)
04/21 05Z,   0.80,   4.75,  99.90,   5.40,  -0.16,
04/21 06Z,   0.80,   3.88,  99.90,   4.53,  -0.16,
04/21 07Z,   0.80,   2.68,  99.90,   3.32,  -0.16,
04/21 08Z,   0.80,   1.49,  99.90,   2.14,  -0.16,
04/21 09Z,   0.80,   0.78,  99.90,   1.42,  -0.16,  (min)
04/21 10Z,   0.80,   0.82,  99.90,   1.46,  -0.16,
04/21 11Z,   0.80,   1.53,  99.90,   2.18,  -0.16,
04/21 12Z,   0.80,   2.58,  99.90,   3.22,  -0.16,
04/21 13Z,   0.80,   3.58,  99.90,   4.22,  -0.16,
04/21 14Z,   0.80,   4.17,  99.90,   4.81,  -0.16,  (max)
04/21 15Z,   0.80,   4.00,  99.90,   4.65,  -0.16,
04/21 16Z,   0.80,   2.86,  99.90,   3.50,  -0.16,
04/21 17Z,   0.80,   0.80,  99.90,   1.45,  -0.16,
04/21 18Z,   0.80,  -1.88,  99.90,  -1.24,  -0.16,
04/21 19Z,   0.80,  -4.78,  99.90,  -4.14,  -0.16,
04/21 20Z,   0.90,  -7.37,  99.90,  -6.62,  -0.16,
04/21 21Z,   0.90,  -8.98,  99.90,  -8.23,  -0.16,
04/21 22Z,   0.90,  -9.11,  99.90,  -8.37,  -0.16,  (min)
04/21 23Z,   0.90,  -7.74,  99.90,  -7.00,  -0.16,
04/22 00Z,   0.90,  -5.29,  99.90,  -4.55,  -0.16,
04/22 01Z,   0.80,  -2.37,  99.90,  -1.72,  -0.16,
04/22 02Z,   0.80,   0.47,  99.90,   1.11,  -0.16,
04/22 03Z,   0.90,   2.76,  99.90,   3.51,  -0.16,
04/22 04Z,   0.90,   4.22,  99.90,   4.96,  -0.16,
04/22 05Z,   0.90,   4.77,  99.90,   5.52,  -0.16,  (max)
04/22 06Z,   0.90,   4.60,  99.90,   5.35,  -0.16,
04/22 07Z,   0.90,   3.89,  99.90,   4.64,  -0.16,
04/22 08Z,   0.90,   2.86,  99.90,   3.60,  -0.16,
04/22 09Z,   0.90,   1.81,  99.90,   2.55,  -0.16,
04/22 10Z,   0.90,   1.14,  99.90,   1.89,  -0.16,
04/22 11Z,   0.90,   1.09,  99.90,   1.84,  -0.16,  (min)
04/22 12Z,   0.90,   1.58,  99.90,   2.32,  -0.16,
04/22 13Z,   0.90,   2.33,  99.90,   3.07,  -0.16,
04/22 14Z,   0.90,   3.06,  99.90,   3.80,  -0.16,
04/22 15Z,   0.90,   3.47,  99.90,   4.21,  -0.16,  (max)
04/22 16Z,   0.90,   3.24,  99.90,   3.98,  -0.16,
04/22 17Z,   1.00,   2.16,  99.90,   3.01,  -0.16,
04/22 18Z,   1.00,   0.29,  99.90,   1.14,  -0.16,
04/22 19Z,   0.90,  -2.11,  99.90,  -1.37,  -0.16,
04/22 20Z,   0.90,  -4.70,  99.90,  -3.95,  -0.16,
04/22 21Z,   0.90,  -6.96,  99.90,  -6.22,  -0.16,
04/22 22Z,   0.90,  -8.32,  99.90,  -7.58,  -0.16,
04/22 23Z,   0.90,  -8.35,  99.90,  -7.60,  -0.16,  (min)
04/23 00Z,   0.80,  -7.05,  99.90,  -6.41,  -0.16,
04/23 01Z,   0.80,  -4.83,  99.90,  -4.19,  -0.16,
04/23 02Z,   0.80,  -2.20,  99.90,  -1.56,  -0.16,
04/23 03Z,   0.80,   0.37,  99.90,   1.02,  -0.16,
04/23 04Z,   0.80,   2.49,  99.90,   3.14,  -0.16,
04/23 05Z,   0.80,   3.88,  99.90,   4.53,  -0.16,
04/23 06Z,   0.70,   4.50,  99.90,   5.04,  -0.16,  (max)
04/23 07Z,   0.70,   4.46,  99.90,   5.01,  -0.16,
04/23 08Z,   0.70,   3.91,  99.90,   4.45,  -0.16,
04/23 09Z,   0.70,   2.97,  99.90,   3.52,  -0.16,
04/23 10Z,   0.70,   1.95,  99.90,   2.50,  -0.16,
04/23 11Z,   0.70,   1.20,  99.90,   1.75,  -0.16,
04/23 12Z,   0.70,   0.95,  99.90,   1.49,  -0.16,  (min)
04/23 13Z,   0.70,   1.15,  99.90,   1.69,  -0.16,
04/23 14Z,   0.60,   1.63,  99.90,   2.07,  -0.16,
04/23 15Z,   0.60,   2.20,  99.90,   2.64,  -0.16,
04/23 16Z,   0.60,   2.58,  99.90,   3.03,  -0.16,  (max)
04/23 17Z,   0.60,   2.47,  99.90,   2.91,  -0.16,
04/23 18Z,   0.60,   1.63,  99.90,   2.08,  -0.16,
04/23 19Z,   0.60,   0.10,  99.90,   0.55,  -0.16,
04/23 20Z,   0.60,  -1.92,  99.90,  -1.48,  -0.16,
04/23 21Z,   0.60,  -4.15,  99.90,  -3.71,  -0.16,
04/23 22Z,   0.50,  -6.15,  99.90,  -5.80,  -0.16,
04/23 23Z,   0.50,  -7.36,  99.90,  -7.02,  -0.16,
04/24 00Z,   0.50,  -7.42,  99.90,  -7.07,  -0.16,
04/24 01Z,  99.90,  -6.33,  99.90,  99.90,  -0.16,
04/24 02Z,  99.90,  -4.43,  99.90,  99.90,  -0.16,
04/24 03Z,  99.90,  -2.11,  99.90,  99.90,  -0.16,
04/24 04Z,  99.90,   0.24,  99.90,  99.90,  -0.16,
04/24 05Z,  99.90,   2.25,  99.90,  99.90,  -0.16,
04/24 06Z,  99.90,   3.64,  99.90,  99.90,  -0.16,