EXTRA-TROPICAL  STORM  SURGE
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Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
Mid-Atlantic
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Alaska
Gulf of Alaska
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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 : 10/17/2026 02:20:21 GMT (units in feet MSL)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/15 06Z,   0.70,  -2.70,  -2.42,  99.90,  -0.42,
10/15 07Z,   0.60,  -4.95,  -4.83,  99.90,  -0.48,
10/15 08Z,   0.60,  -6.68,  -6.53,  99.90,  -0.45,
10/15 09Z,   0.60,  -7.38,  -7.06,  99.90,  -0.28,  (min)
10/15 10Z,   0.60,  -6.80,  -6.45,  99.90,  -0.25,
10/15 11Z,   0.60,  -5.12,  -4.89,  99.90,  -0.37,
10/15 12Z,   0.60,  -2.81,  -2.68,  99.90,  -0.47,
10/15 13Z,   0.60,  -0.34,  -0.20,  99.90,  -0.46,
10/15 14Z,   0.60,   1.85,   1.97,  99.90,  -0.48,
10/15 15Z,   0.60,   3.40,   3.41,  99.90,  -0.59,
10/15 16Z,   0.60,   4.15,   4.12,  99.90,  -0.63,  (max)
10/15 17Z,   0.60,   4.17,   4.11,  99.90,  -0.66,
10/15 18Z,   0.60,   3.69,   3.70,  99.90,  -0.59,
10/15 19Z,   0.60,   2.89,   2.93,  99.90,  -0.56,
10/15 20Z,   0.60,   1.97,   1.90,  99.90,  -0.67,
10/15 21Z,   0.50,   1.23,   1.09,  99.90,  -0.64,
10/15 22Z,   0.50,   0.93,   0.78,  99.90,  -0.65,  (min)
10/15 23Z,   0.50,   1.09,   0.99,  99.90,  -0.60,
10/16 00Z,   0.60,   1.53,   1.59,  99.90,  -0.54,
10/16 01Z,   0.60,   2.05,   2.22,  99.90,  -0.43,
10/16 02Z,   0.60,   2.45,   2.71,  99.90,  -0.34,
10/16 03Z,   0.60,   2.45,   2.78,  99.90,  -0.27,  (max)
10/16 04Z,   0.60,   1.83,   2.19,  99.90,  -0.24,
10/16 05Z,   0.60,   0.52,   0.89,  99.90,  -0.23,
10/16 06Z,   0.60,  -1.30,  -0.93,  99.90,  -0.23,
10/16 07Z,   0.60,  -3.34,  -3.09,  99.90,  -0.35,
10/16 08Z,   0.60,  -5.25,  -5.02,  99.90,  -0.37,
10/16 09Z,   0.60,  -6.57,  -6.18,  99.90,  -0.21,
10/16 10Z,   0.60,  -6.86,  -6.33,  99.90,  -0.07,  (min)
10/16 11Z,   0.70,  -6.01,  -5.45,  99.90,  -0.14,
10/16 12Z,   0.70,  -4.28,  -3.90,  99.90,  -0.32,
10/16 13Z,   0.70,  -2.10,  -1.68,  99.90,  -0.28,
10/16 14Z,   0.70,   0.13,   0.58,  99.90,  -0.25,
10/16 15Z,   0.70,   2.03,   2.46,  99.90,  -0.27,
10/16 16Z,   0.70,   3.33,   3.74,  99.90,  -0.29,
10/16 17Z,   0.70,   3.92,   4.31,  99.90,  -0.31,
10/16 18Z,   0.80,   3.91,   4.31,  99.90,  -0.40,  (max)
10/16 19Z,   0.80,   3.50,   3.92,  99.90,  -0.38,
10/16 20Z,   0.80,   2.83,   3.23,  99.90,  -0.40,
10/16 21Z,   0.80,   2.07,   2.42,  99.90,  -0.45,
10/16 22Z,   0.80,   1.46,   1.72,  99.90,  -0.54,
10/16 23Z,   0.80,   1.18,   1.45,  99.90,  -0.53,  (min)
10/17 00Z,   0.80,   1.22,   1.62,  99.90,  -0.40,
10/17 01Z,   0.80,   1.44,   1.97,  99.90,  -0.27,
10/17 02Z,   0.90,   1.70,   2.35,  99.90,  -0.25,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/17 03Z,   0.90,   1.88,  99.90,   2.51,  -0.26,  (max)
10/17 04Z,   0.90,   1.75,  99.90,   2.37,  -0.28,
10/17 05Z,   0.90,   1.09,  99.90,   1.69,  -0.30,
10/17 06Z,   0.90,  -0.13,  99.90,   0.45,  -0.32,
10/17 07Z,   0.90,  -1.76,  99.90,  -1.20,  -0.34,
10/17 08Z,   1.00,  -3.53,  99.90,  -2.89,  -0.36,
10/17 09Z,   1.00,  -5.13,  99.90,  -4.50,  -0.37,
10/17 10Z,   1.00,  -6.13,  99.90,  -5.52,  -0.39,
10/17 11Z,   1.00,  -6.19,  99.90,  -5.60,  -0.41,  (min)
10/17 12Z,   1.00,  -5.26,  99.90,  -4.69,  -0.43,
10/17 13Z,   1.00,  -3.63,  99.90,  -3.08,  -0.45,
10/17 14Z,   1.00,  -1.67,  99.90,  -1.13,  -0.46,
10/17 15Z,   1.00,   0.31,  99.90,   0.84,  -0.46,
10/17 16Z,   1.00,   2.00,  99.90,   2.53,  -0.46,
10/17 17Z,   1.10,   3.14,  99.90,   3.78,  -0.46,
10/17 18Z,   1.10,   3.68,  99.90,   4.31,  -0.46,
10/17 19Z,   1.10,   3.71,  99.90,   4.34,  -0.46,  (max)
10/17 20Z,   1.00,   3.39,  99.90,   3.92,  -0.46,
10/17 21Z,   1.00,   2.81,  99.90,   3.35,  -0.46,
10/17 22Z,   1.00,   2.12,  99.90,   2.65,  -0.46,
10/17 23Z,   1.00,   1.52,  99.90,   2.05,  -0.46,
10/18 00Z,   0.90,   1.16,  99.90,   1.59,  -0.46,
10/18 01Z,   0.90,   1.02,  99.90,   1.46,  -0.46,  (min)
10/18 02Z,   0.90,   1.03,  99.90,   1.47,  -0.46,
10/18 03Z,   0.90,   1.15,  99.90,   1.58,  -0.46,
10/18 04Z,   0.90,   1.26,  99.90,   1.70,  -0.46,  (max)
10/18 05Z,   0.90,   1.15,  99.90,   1.59,  -0.46,
10/18 06Z,   0.90,   0.60,  99.90,   1.03,  -0.46,
10/18 07Z,   0.90,  -0.45,  99.90,  -0.01,  -0.46,
10/18 08Z,   0.90,  -1.84,  99.90,  -1.40,  -0.46,
10/18 09Z,   0.80,  -3.36,  99.90,  -3.03,  -0.46,
10/18 10Z,   0.80,  -4.73,  99.90,  -4.40,  -0.46,
10/18 11Z,   0.80,  -5.56,  99.90,  -5.22,  -0.46,  (min)
10/18 12Z,   0.80,  -5.55,  99.90,  -5.21,  -0.46,
10/18 13Z,   0.80,  -4.69,  99.90,  -4.36,  -0.46,
10/18 14Z,   0.80,  -3.24,  99.90,  -2.90,  -0.46,
10/18 15Z,   0.70,  -1.48,  99.90,  -1.24,  -0.46,
10/18 16Z,   0.70,   0.33,  99.90,   0.57,  -0.46,
10/18 17Z,   0.70,   1.91,  99.90,   2.15,  -0.46,
10/18 18Z,   0.70,   3.01,  99.90,   3.25,  -0.46,
10/18 19Z,   0.70,   3.56,  99.90,   3.79,  -0.46,
10/18 20Z,   0.70,   3.64,  99.90,   3.88,  -0.46,  (max)
10/18 21Z,   0.70,   3.36,  99.90,   3.60,  -0.46,
10/18 22Z,   0.80,   2.78,  99.90,   3.11,  -0.46,
10/18 23Z,   0.80,   2.02,  99.90,   2.35,  -0.46,
10/19 00Z,   0.80,   1.31,  99.90,   1.64,  -0.46,
10/19 01Z,   0.80,   0.79,  99.90,   1.13,  -0.46,
10/19 02Z,   0.80,   0.50,  99.90,   0.84,  -0.46,
10/19 03Z,   0.80,   0.41,  99.90,   0.75,  -0.46,  (min)
10/19 04Z,   0.80,   0.52,  99.90,   0.86,  -0.46,
10/19 05Z,   0.90,   0.73,  99.90,   1.17,  -0.46,
10/19 06Z,   0.90,   0.77,  99.90,   1.21,  -0.46,  (max)
10/19 07Z,   0.90,   0.40,  99.90,   0.84,  -0.46,
10/19 08Z,   0.90,  -0.43,  99.90,   0.01,  -0.46,
10/19 09Z,   0.90,  -1.61,  99.90,  -1.18,  -0.46,
10/19 10Z,   0.90,  -2.97,  99.90,  -2.54,  -0.46,
10/19 11Z,   0.90,  -4.23,  99.90,  -3.80,  -0.46,
10/19 12Z,   1.00,  -5.02,  99.90,  -4.49,  -0.46,
10/19 13Z,   1.00,  -5.06,  99.90,  -4.52,  -0.46,  (min)
10/19 14Z,   1.00,  -4.32,  99.90,  -3.79,  -0.46,
10/19 15Z,   1.00,  -3.01,  99.90,  -2.48,  -0.46,
10/19 16Z,   1.00,  -1.36,  99.90,  -0.83,  -0.46,
10/19 17Z,   1.00,   0.40,  99.90,   0.93,  -0.46,
10/19 18Z,   1.00,   1.97,  99.90,   2.51,  -0.46,
10/19 19Z,   1.00,   3.08,  99.90,   3.62,  -0.46,
10/19 20Z,   1.00,   3.64,  99.90,   4.18,  -0.46,
10/19 21Z,   1.00,   3.70,  99.90,   4.24,  -0.46,  (max)
10/19 22Z,   1.00,   3.33,  99.90,   3.87,  -0.46,
10/19 23Z,   1.00,   2.59,  99.90,   3.12,  -0.46,
10/20 00Z,   1.00,   1.63,  99.90,   2.17,  -0.46,
10/20 01Z,   1.00,   0.73,  99.90,   1.26,  -0.46,
10/20 02Z,   1.00,   0.07,  99.90,   0.60,  -0.46,
10/20 03Z,   1.00,  -0.29,  99.90,   0.25,  -0.46,
10/20 04Z,   1.00,  -0.32,  99.90,   0.22,  -0.46,  (min)
10/20 05Z,   1.00,  -0.03,  99.90,   0.51,  -0.46,
10/20 06Z,   1.00,   0.41,  99.90,   0.95,  -0.46,
10/20 07Z,   1.00,   0.69,  99.90,   1.22,  -0.46,  (max)
10/20 08Z,   1.00,   0.52,  99.90,   1.06,  -0.46,
10/20 09Z,   1.00,  -0.13,  99.90,   0.40,  -0.46,
10/20 10Z,   1.00,  -1.19,  99.90,  -0.66,  -0.46,
10/20 11Z,   1.00,  -2.50,  99.90,  -1.96,  -0.46,
10/20 12Z,   1.00,  -3.76,  99.90,  -3.23,  -0.46,
10/20 13Z,   1.00,  -4.60,  99.90,  -4.06,  -0.46,
10/20 14Z,   1.00,  -4.70,  99.90,  -4.17,  -0.46,  (min)
10/20 15Z,   1.00,  -4.04,  99.90,  -3.51,  -0.46,
10/20 16Z,   1.00,  -2.78,  99.90,  -2.24,  -0.46,
10/20 17Z,   0.90,  -1.11,  99.90,  -0.67,  -0.46,
10/20 18Z,   0.90,   0.71,  99.90,   1.14,  -0.46,