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 : 05/17/2026 21:21:12 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/16 06Z,   0.50,   6.37,   6.52,  99.90,  -0.35,  (min)
05/16 07Z,   0.50,   7.05,   7.24,  99.90,  -0.31,
05/16 08Z,   0.50,   8.38,   8.55,  99.90,  -0.33,
05/16 09Z,   0.50,   9.92,  10.07,  99.90,  -0.35,
05/16 10Z,   0.50,  11.19,  11.42,  99.90,  -0.27,
05/16 11Z,   0.50,  11.69,  12.06,  99.90,  -0.13,  (max)
05/16 12Z,   0.40,  11.08,  11.52,  99.90,   0.04,
05/16 13Z,   0.40,   9.33,   9.97,  99.90,   0.24,
05/16 14Z,   0.40,   6.69,   7.51,  99.90,   0.42,
05/16 15Z,   0.40,   3.55,   4.24,  99.90,   0.29,
05/16 16Z,   0.40,   0.42,   1.03,  99.90,   0.21,
05/16 17Z,   0.40,  -2.00,  -1.34,  99.90,   0.26,
05/16 18Z,   0.40,  -3.03,  -2.50,  99.90,   0.13,  (min)
05/16 19Z,   0.40,  -2.37,  -1.77,  99.90,   0.20,
05/16 20Z,   0.40,  -0.26,   0.16,  99.90,   0.02,
05/16 21Z,   0.40,   2.73,   2.94,  99.90,  -0.19,
05/16 22Z,   0.40,   5.94,   6.10,  99.90,  -0.24,
05/16 23Z,   0.40,   8.75,   8.70,  99.90,  -0.45,
05/17 00Z,   0.40,  10.69,  10.48,  99.90,  -0.61,
05/17 01Z,   0.40,  11.59,  11.28,  99.90,  -0.71,  (max)
05/17 02Z,   0.40,  11.54,  11.22,  99.90,  -0.72,
05/17 03Z,   0.50,  10.76,  10.53,  99.90,  -0.73,
05/17 04Z,   0.50,   9.49,   9.46,  99.90,  -0.53,
05/17 05Z,   0.50,   8.12,   8.19,  99.90,  -0.43,
05/17 06Z,   0.40,   7.18,   7.28,  99.90,  -0.30,
05/17 07Z,   0.40,   7.07,   7.18,  99.90,  -0.29,  (min)
05/17 08Z,   0.40,   7.82,   7.92,  99.90,  -0.30,
05/17 09Z,   0.40,   9.11,   9.12,  99.90,  -0.39,
05/17 10Z,   0.30,  10.48,  10.42,  99.90,  -0.36,
05/17 11Z,   0.30,  11.46,  11.49,  99.90,  -0.27,
05/17 12Z,   0.20,  11.57,  11.69,  99.90,  -0.08,  (max)
05/17 13Z,   0.10,  10.54,  10.75,  99.90,   0.11,
05/17 14Z,   0.10,   8.41,   8.74,  99.90,   0.23,
05/17 15Z,   0.10,   5.47,   5.78,  99.90,   0.21,
05/17 16Z,   0.10,   2.14,   2.29,  99.90,   0.05,
05/17 17Z,   0.10,  -0.99,  -0.93,  99.90,  -0.04,
05/17 18Z,   0.10,  -3.18,  -3.12,  99.90,  -0.04,
05/17 19Z,   0.10,  -3.78,  -3.73,  99.90,  -0.05,  (min)
05/17 20Z,   0.10,  -2.62,  -2.42,  99.90,   0.10,
05/17 21Z,   0.00,  -0.06,   0.00,  99.90,   0.06,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/17 22Z,   0.00,   3.24,  99.90,   3.28,   0.04,
05/17 23Z,   0.00,   6.60,  99.90,   6.63,   0.02,
05/18 00Z,   0.00,   9.42,  99.90,   9.42,   0.00,
05/18 01Z,   0.00,  11.27,  99.90,  11.25,  -0.02,
05/18 02Z,   0.00,  12.05,  99.90,  12.02,  -0.04,  (max)
05/18 03Z,   0.00,  11.91,  99.90,  11.86,  -0.06,
05/18 04Z,   0.00,  11.07,  99.90,  10.99,  -0.08,
05/18 05Z,   0.00,   9.77,  99.90,   9.67,  -0.10,
05/18 06Z,   0.00,   8.43,  99.90,   8.31,  -0.12,
05/18 07Z,   0.10,   7.58,  99.90,   7.54,  -0.14,
05/18 08Z,   0.10,   7.55,  99.90,   7.50,  -0.16,  (min)
05/18 09Z,   0.10,   8.31,  99.90,   8.24,  -0.18,
05/18 10Z,   0.10,   9.50,  99.90,   9.43,  -0.18,
05/18 11Z,   0.10,  10.68,  99.90,  10.61,  -0.18,
05/18 12Z,   0.10,  11.39,  99.90,  11.31,  -0.18,  (max)
05/18 13Z,   0.10,  11.20,  99.90,  11.12,  -0.18,
05/18 14Z,   0.10,   9.89,  99.90,   9.81,  -0.18,
05/18 15Z,   0.10,   7.54,  99.90,   7.47,  -0.18,
05/18 16Z,   0.10,   4.48,  99.90,   4.40,  -0.18,
05/18 17Z,   0.10,   1.15,  99.90,   1.08,  -0.18,
05/18 18Z,   0.10,  -1.83,  99.90,  -1.90,  -0.18,
05/18 19Z,   0.10,  -3.71,  99.90,  -3.78,  -0.18,
05/18 20Z,   0.10,  -3.91,  99.90,  -3.99,  -0.18,  (min)
05/18 21Z,   0.10,  -2.38,  99.90,  -2.46,  -0.18,
05/18 22Z,   0.10,   0.43,  99.90,   0.35,  -0.18,
05/18 23Z,   0.10,   3.83,  99.90,   3.76,  -0.18,
05/19 00Z,   0.10,   7.16,  99.90,   7.09,  -0.18,
05/19 01Z,   0.10,   9.86,  99.90,   9.78,  -0.18,
05/19 02Z,   0.20,  11.56,  99.90,  11.59,  -0.18,
05/19 03Z,   0.20,  12.23,  99.90,  12.25,  -0.18,  (max)
05/19 04Z,   0.20,  12.01,  99.90,  12.04,  -0.18,
05/19 05Z,   0.20,  11.13,  99.90,  11.15,  -0.18,
05/19 06Z,   0.20,   9.82,  99.90,   9.85,  -0.18,
05/19 07Z,   0.20,   8.53,  99.90,   8.55,  -0.18,
05/19 08Z,   0.20,   7.75,  99.90,   7.77,  -0.18,  (min)
05/19 09Z,   0.20,   7.76,  99.90,   7.79,  -0.18,
05/19 10Z,   0.20,   8.47,  99.90,   8.49,  -0.18,
05/19 11Z,   0.20,   9.52,  99.90,   9.54,  -0.18,
05/19 12Z,   0.10,  10.51,  99.90,  10.43,  -0.18,
05/19 13Z,   0.10,  11.01,  99.90,  10.93,  -0.18,  (max)
05/19 14Z,   0.10,  10.63,  99.90,  10.56,  -0.18,
05/19 15Z,   0.10,   9.21,  99.90,   9.13,  -0.18,
05/19 16Z,   0.10,   6.84,  99.90,   6.76,  -0.18,
05/19 17Z,   0.10,   3.84,  99.90,   3.76,  -0.18,
05/19 18Z,   0.10,   0.66,  99.90,   0.58,  -0.18,
05/19 19Z,   0.10,  -2.07,  99.90,  -2.14,  -0.18,
05/19 20Z,   0.10,  -3.61,  99.90,  -3.69,  -0.18,  (min)
05/19 21Z,   0.10,  -3.50,  99.90,  -3.57,  -0.18,
05/19 22Z,   0.10,  -1.76,  99.90,  -1.84,  -0.18,
05/19 23Z,   0.00,   1.10,  99.90,   0.92,  -0.18,
05/20 00Z,   0.10,   4.42,  99.90,   4.34,  -0.18,
05/20 01Z,   0.10,   7.58,  99.90,   7.50,  -0.18,
05/20 02Z,   0.00,  10.08,  99.90,   9.91,  -0.18,
05/20 03Z,   0.00,  11.62,  99.90,  11.45,  -0.18,
05/20 04Z,   0.10,  12.18,  99.90,  12.11,  -0.18,  (max)
05/20 05Z,   0.10,  11.92,  99.90,  11.84,  -0.18,
05/20 06Z,   0.10,  11.01,  99.90,  10.93,  -0.18,
05/20 07Z,   0.10,   9.71,  99.90,   9.63,  -0.18,
05/20 08Z,   0.10,   8.44,  99.90,   8.37,  -0.18,
05/20 09Z,   0.10,   7.69,  99.90,   7.61,  -0.18,
05/20 10Z,   0.10,   7.67,  99.90,   7.59,  -0.18,  (min)
05/20 11Z,   0.10,   8.26,  99.90,   8.19,  -0.18,
05/20 12Z,   0.00,   9.15,  99.90,   8.97,  -0.18,
05/20 13Z,   0.00,   9.98,  99.90,   9.80,  -0.18,
05/20 14Z,   0.00,  10.37,  99.90,  10.19,  -0.18,  (max)
05/20 15Z,   0.00,   9.95,  99.90,   9.77,  -0.18,
05/20 16Z,   0.00,   8.57,  99.90,   8.39,  -0.18,
05/20 17Z,   0.00,   6.33,  99.90,   6.16,  -0.18,
05/20 18Z,   0.00,   3.55,  99.90,   3.37,  -0.18,
05/20 19Z,   0.00,   0.65,  99.90,   0.47,  -0.18,
05/20 20Z,   0.00,  -1.76,  99.90,  -1.93,  -0.18,
05/20 21Z,   0.00,  -2.99,  99.90,  -3.17,  -0.18,  (min)
05/20 22Z,   0.00,  -2.66,  99.90,  -2.84,  -0.18,
05/20 23Z,   0.00,  -0.88,  99.90,  -1.05,  -0.18,
05/21 00Z,   0.00,   1.86,  99.90,   1.68,  -0.18,
05/21 01Z,   0.00,   4.96,  99.90,   4.79,  -0.18,
05/21 02Z,   0.00,   7.88,  99.90,   7.71,  -0.18,
05/21 03Z,   0.00,  10.17,  99.90,   9.99,  -0.18,
05/21 04Z,   0.00,  11.55,  99.90,  11.37,  -0.18,
05/21 05Z,   0.00,  12.02,  99.90,  11.84,  -0.18,  (max)
05/21 06Z,   0.00,  11.71,  99.90,  11.53,  -0.18,
05/21 07Z,   0.00,  10.77,  99.90,  10.60,  -0.18,
05/21 08Z,   0.00,   9.46,  99.90,   9.28,  -0.18,
05/21 09Z,   0.10,   8.18,  99.90,   8.10,  -0.18,
05/21 10Z,   0.10,   7.38,  99.90,   7.31,  -0.18,
05/21 11Z,   0.10,   7.26,  99.90,   7.18,  -0.18,  (min)
05/21 12Z,   0.00,   7.69,  99.90,   7.51,  -0.18,
05/21 13Z,  99.90,   8.42,  99.90,  99.90,  -0.18,
05/21 14Z,  99.90,   9.15,  99.90,  99.90,  -0.18,
05/21 15Z,  99.90,   9.52,  99.90,  99.90,  -0.18,
05/21 16Z,  99.90,   9.19,  99.90,  99.90,  -0.18,
05/21 17Z,  99.90,   8.00,  99.90,  99.90,  -0.18,
05/21 18Z,  99.90,   6.05,  99.90,  99.90,  -0.18,