EXTRA-TROPICAL  STORM  SURGE
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Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
Mid-Atlantic
Southeast
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Alaska
Gulf of Alaska
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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 : 05/20/2026 18:29:03 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/19 00Z,   0.10,   7.16,   6.95,  99.90,  -0.31,
05/19 01Z,   0.10,   9.86,   9.47,  99.90,  -0.49,
05/19 02Z,   0.10,  11.56,  11.14,  99.90,  -0.52,
05/19 03Z,   0.10,  12.23,  11.87,  99.90,  -0.46,  (max)
05/19 04Z,   0.20,  12.01,  11.65,  99.90,  -0.56,
05/19 05Z,   0.20,  11.13,  10.93,  99.90,  -0.40,
05/19 06Z,   0.20,   9.82,   9.89,  99.90,  -0.13,
05/19 07Z,   0.20,   8.53,   8.64,  99.90,  -0.09,
05/19 08Z,   0.20,   7.75,   7.86,  99.90,  -0.09,
05/19 09Z,   0.20,   7.76,   7.82,  99.90,  -0.14,  (min)
05/19 10Z,   0.20,   8.47,   8.47,  99.90,  -0.20,
05/19 11Z,   0.10,   9.52,   9.46,  99.90,  -0.16,
05/19 12Z,   0.10,  10.51,  10.44,  99.90,  -0.17,
05/19 13Z,   0.10,  11.01,  11.09,  99.90,  -0.02,  (max)
05/19 14Z,   0.10,  10.63,  10.83,  99.90,   0.10,
05/19 15Z,   0.10,   9.21,   9.48,  99.90,   0.17,
05/19 16Z,   0.10,   6.84,   7.13,  99.90,   0.19,
05/19 17Z,   0.10,   3.84,   4.01,  99.90,   0.07,
05/19 18Z,   0.10,   0.66,   0.62,  99.90,  -0.14,
05/19 19Z,   0.10,  -2.07,  -2.10,  99.90,  -0.13,
05/19 20Z,   0.10,  -3.61,  -3.66,  99.90,  -0.15,  (min)
05/19 21Z,   0.10,  -3.50,  -3.45,  99.90,  -0.05,
05/19 22Z,   0.10,  -1.76,  -1.69,  99.90,  -0.03,
05/19 23Z,   0.10,   1.10,   1.05,  99.90,  -0.15,
05/20 00Z,   0.10,   4.42,   4.36,  99.90,  -0.16,
05/20 01Z,   0.10,   7.58,   7.46,  99.90,  -0.22,
05/20 02Z,   0.10,  10.08,   9.79,  99.90,  -0.39,
05/20 03Z,   0.10,  11.62,  11.26,  99.90,  -0.46,
05/20 04Z,   0.10,  12.18,  11.85,  99.90,  -0.43,  (max)
05/20 05Z,   0.10,  11.92,  11.59,  99.90,  -0.43,
05/20 06Z,   0.20,  11.01,  10.85,  99.90,  -0.36,
05/20 07Z,   0.20,   9.71,   9.76,  99.90,  -0.15,
05/20 08Z,   0.20,   8.44,   8.51,  99.90,  -0.13,
05/20 09Z,   0.20,   7.69,   7.77,  99.90,  -0.12,
05/20 10Z,   0.20,   7.67,   7.73,  99.90,  -0.14,  (min)
05/20 11Z,   0.20,   8.26,   8.26,  99.90,  -0.20,
05/20 12Z,   0.10,   9.15,   9.10,  99.90,  -0.15,
05/20 13Z,   0.10,   9.98,   9.91,  99.90,  -0.17,
05/20 14Z,   0.10,  10.37,  10.44,  99.90,  -0.03,  (max)
05/20 15Z,   0.10,   9.95,  10.13,  99.90,   0.08,
05/20 16Z,   0.10,   8.57,   8.76,  99.90,   0.09,
05/20 17Z,   0.10,   6.33,   6.49,  99.90,   0.06,
05/20 18Z,   0.10,   3.55,   3.54,  99.90,  -0.11,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/20 19Z,   0.10,   0.65,  99.90,   0.64,  -0.11,
05/20 20Z,   0.10,  -1.76,  99.90,  -1.77,  -0.12,
05/20 21Z,   0.10,  -2.99,  99.90,  -3.01,  -0.12,  (min)
05/20 22Z,   0.10,  -2.66,  99.90,  -2.68,  -0.12,
05/20 23Z,   0.10,  -0.88,  99.90,  -0.90,  -0.12,
05/21 00Z,   0.10,   1.86,  99.90,   1.83,  -0.13,
05/21 01Z,   0.10,   4.96,  99.90,   4.93,  -0.13,
05/21 02Z,   0.10,   7.88,  99.90,   7.85,  -0.13,
05/21 03Z,   0.10,  10.17,  99.90,  10.13,  -0.14,
05/21 04Z,   0.10,  11.55,  99.90,  11.51,  -0.14,
05/21 05Z,   0.10,  12.02,  99.90,  11.98,  -0.14,  (max)
05/21 06Z,   0.10,  11.71,  99.90,  11.67,  -0.14,
05/21 07Z,   0.20,  10.77,  99.90,  10.83,  -0.14,
05/21 08Z,   0.20,   9.46,  99.90,   9.51,  -0.14,
05/21 09Z,   0.20,   8.18,  99.90,   8.24,  -0.14,
05/21 10Z,   0.20,   7.38,  99.90,   7.44,  -0.14,
05/21 11Z,   0.20,   7.26,  99.90,   7.31,  -0.14,  (min)
05/21 12Z,   0.20,   7.69,  99.90,   7.74,  -0.14,
05/21 13Z,   0.20,   8.42,  99.90,   8.47,  -0.14,
05/21 14Z,   0.20,   9.15,  99.90,   9.20,  -0.14,
05/21 15Z,   0.20,   9.52,  99.90,   9.58,  -0.14,  (max)
05/21 16Z,   0.20,   9.19,  99.90,   9.25,  -0.14,
05/21 17Z,   0.20,   8.00,  99.90,   8.06,  -0.14,
05/21 18Z,   0.20,   6.05,  99.90,   6.11,  -0.14,
05/21 19Z,   0.20,   3.61,  99.90,   3.67,  -0.14,
05/21 20Z,   0.20,   1.07,  99.90,   1.13,  -0.14,
05/21 21Z,   0.20,  -0.99,  99.90,  -0.93,  -0.14,
05/21 22Z,   0.20,  -1.96,  99.90,  -1.90,  -0.14,  (min)
05/21 23Z,   0.20,  -1.52,  99.90,  -1.46,  -0.14,
05/22 00Z,   0.20,   0.17,  99.90,   0.23,  -0.14,
05/22 01Z,   0.20,   2.68,  99.90,   2.74,  -0.14,
05/22 02Z,   0.20,   5.50,  99.90,   5.55,  -0.14,
05/22 03Z,   0.20,   8.15,  99.90,   8.21,  -0.14,
05/22 04Z,   0.30,  10.22,  99.90,  10.38,  -0.14,
05/22 05Z,   0.30,  11.45,  99.90,  11.61,  -0.14,
05/22 06Z,   0.30,  11.84,  99.90,  11.99,  -0.14,  (max)
05/22 07Z,   0.30,  11.47,  99.90,  11.63,  -0.14,
05/22 08Z,   0.30,  10.47,  99.90,  10.63,  -0.14,
05/22 09Z,   0.40,   9.09,  99.90,   9.34,  -0.14,
05/22 10Z,   0.40,   7.72,  99.90,   7.98,  -0.14,
05/22 11Z,   0.40,   6.81,  99.90,   7.06,  -0.14,
05/22 12Z,   0.40,   6.51,  99.90,   6.77,  -0.14,  (min)
05/22 13Z,   0.40,   6.76,  99.90,   7.01,  -0.14,
05/22 14Z,   0.40,   7.37,  99.90,   7.62,  -0.14,
05/22 15Z,   0.40,   8.09,  99.90,   8.34,  -0.14,
05/22 16Z,   0.40,   8.56,  99.90,   8.82,  -0.14,  (max)
05/22 17Z,   0.40,   8.44,  99.90,   8.69,  -0.14,
05/22 18Z,   0.40,   7.56,  99.90,   7.82,  -0.14,
05/22 19Z,   0.40,   6.01,  99.90,   6.26,  -0.14,
05/22 20Z,   0.40,   3.99,  99.90,   4.25,  -0.14,
05/22 21Z,   0.40,   1.87,  99.90,   2.12,  -0.14,
05/22 22Z,   0.40,   0.15,  99.90,   0.40,  -0.14,
05/22 23Z,   0.40,  -0.62,  99.90,  -0.37,  -0.14,  (min)
05/23 00Z,   0.40,  -0.18,  99.90,   0.08,  -0.14,
05/23 01Z,   0.40,   1.33,  99.90,   1.59,  -0.14,
05/23 02Z,   0.40,   3.55,  99.90,   3.80,  -0.14,
05/23 03Z,   0.40,   6.07,  99.90,   6.32,  -0.14,
05/23 04Z,   0.40,   8.46,  99.90,   8.72,  -0.14,
05/23 05Z,   0.40,  10.32,  99.90,  10.58,  -0.14,
05/23 06Z,   0.50,  11.41,  99.90,  11.76,  -0.14,
05/23 07Z,   0.50,  11.68,  99.90,  12.04,  -0.14,  (max)
05/23 08Z,   0.50,  11.21,  99.90,  11.56,  -0.14,
05/23 09Z,   0.50,  10.09,  99.90,  10.44,  -0.14,
05/23 10Z,   0.40,   8.55,  99.90,   8.81,  -0.14,
05/23 11Z,   0.40,   7.02,  99.90,   7.28,  -0.14,
05/23 12Z,   0.40,   5.92,  99.90,   6.18,  -0.14,
05/23 13Z,   0.40,   5.43,  99.90,   5.69,  -0.14,  (min)
05/23 14Z,   0.40,   5.54,  99.90,   5.79,  -0.14,
05/23 15Z,   0.40,   6.11,  99.90,   6.37,  -0.14,
05/23 16Z,   0.40,   6.93,  99.90,   7.18,  -0.14,
05/23 17Z,   0.40,   7.61,  99.90,   7.87,  -0.14,
05/23 18Z,   0.40,   7.80,  99.90,   8.05,  -0.14,  (max)
05/23 19Z,   0.40,   7.32,  99.90,   7.58,  -0.14,
05/23 20Z,   0.40,   6.23,  99.90,   6.48,  -0.14,
05/23 21Z,   0.40,   4.68,  99.90,   4.93,  -0.14,
05/23 22Z,   0.40,   2.95,  99.90,   3.21,  -0.14,
05/23 23Z,   0.40,   1.53,  99.90,   1.78,  -0.14,
05/24 00Z,   0.40,   0.89,  99.90,   1.14,  -0.14,  (min)
05/24 01Z,   0.40,   1.26,  99.90,   1.51,  -0.14,
05/24 02Z,   0.40,   2.54,  99.90,   2.79,  -0.14,
05/24 03Z,   0.40,   4.46,  99.90,   4.72,  -0.14,
05/24 04Z,   0.50,   6.71,  99.90,   7.06,  -0.14,
05/24 05Z,   0.50,   8.86,  99.90,   9.22,  -0.14,
05/24 06Z,   0.50,  10.51,  99.90,  10.87,  -0.14,
05/24 07Z,   0.50,  11.42,  99.90,  11.77,  -0.14,
05/24 08Z,   0.50,  11.52,  99.90,  11.88,  -0.14,  (max)
05/24 09Z,   0.50,  10.87,  99.90,  11.23,  -0.14,
05/24 10Z,   0.50,   9.53,  99.90,   9.89,  -0.14,
05/24 11Z,   0.50,   7.77,  99.90,   8.12,  -0.14,
05/24 12Z,   0.50,   6.02,  99.90,   6.38,  -0.14,