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 : 05/08/2026 08:21:13 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/06 12Z,   0.50,   8.19,   8.56,  99.90,  -0.13,
05/06 13Z,   0.50,   8.61,   9.00,  99.90,  -0.11,
05/06 14Z,   0.50,   8.87,   9.30,  99.90,  -0.07,  (max)
05/06 15Z,   0.50,   8.72,   9.18,  99.90,  -0.04,
05/06 16Z,   0.50,   7.93,   8.33,  99.90,  -0.10,
05/06 17Z,   0.50,   6.47,   6.85,  99.90,  -0.12,
05/06 18Z,   0.50,   4.53,   4.88,  99.90,  -0.15,
05/06 19Z,   0.50,   2.41,   2.68,  99.90,  -0.23,
05/06 20Z,   0.50,   0.53,   0.80,  99.90,  -0.23,
05/06 21Z,   0.50,  -0.64,  -0.20,  99.90,  -0.06,  (min)
05/06 22Z,   0.50,  -0.68,  -0.04,  99.90,   0.14,
05/06 23Z,   0.50,   0.48,   1.04,  99.90,   0.06,
05/07 00Z,   0.40,   2.49,   2.79,  99.90,  -0.10,
05/07 01Z,   0.40,   4.88,   5.13,  99.90,  -0.15,
05/07 02Z,   0.40,   7.23,   7.46,  99.90,  -0.17,
05/07 03Z,   0.40,   9.17,   9.30,  99.90,  -0.27,
05/07 04Z,   0.40,  10.42,  10.47,  99.90,  -0.35,
05/07 05Z,   0.40,  10.90,  11.00,  99.90,  -0.30,  (max)
05/07 06Z,   0.40,  10.74,  10.90,  99.90,  -0.24,
05/07 07Z,   0.40,  10.16,  10.43,  99.90,  -0.13,
05/07 08Z,   0.40,   9.33,   9.71,  99.90,  -0.02,
05/07 09Z,   0.40,   8.46,   8.84,  99.90,  -0.02,
05/07 10Z,   0.30,   7.84,   8.15,  99.90,   0.01,
05/07 11Z,   0.30,   7.62,   7.88,  99.90,  -0.04,  (min)
05/07 12Z,   0.30,   7.73,   7.97,  99.90,  -0.06,
05/07 13Z,   0.30,   8.01,   8.28,  99.90,  -0.03,
05/07 14Z,   0.30,   8.28,   8.58,  99.90,   0.00,
05/07 15Z,   0.30,   8.40,   8.68,  99.90,  -0.02,  (max)
05/07 16Z,   0.30,   8.14,   8.39,  99.90,  -0.05,
05/07 17Z,   0.30,   7.31,   7.45,  99.90,  -0.16,
05/07 18Z,   0.30,   5.88,   5.98,  99.90,  -0.20,
05/07 19Z,   0.30,   4.08,   4.18,  99.90,  -0.20,
05/07 20Z,   0.30,   2.19,   2.27,  99.90,  -0.22,
05/07 21Z,   0.30,   0.60,   0.78,  99.90,  -0.12,
05/07 22Z,   0.30,  -0.25,   0.20,  99.90,   0.15,  (min)
05/07 23Z,   0.30,  -0.02,   0.60,  99.90,   0.32,
05/08 00Z,   0.30,   1.26,   1.78,  99.90,   0.22,
05/08 01Z,   0.30,   3.23,   3.63,  99.90,   0.10,
05/08 02Z,   0.30,   5.46,   5.91,  99.90,   0.15,
05/08 03Z,   0.30,   7.60,   8.08,  99.90,   0.18,
05/08 04Z,   0.30,   9.33,   9.76,  99.90,   0.13,
05/08 05Z,   0.30,  10.39,  10.84,  99.90,   0.15,
05/08 06Z,   0.30,  10.74,  11.24,  99.90,   0.20,  (max)
05/08 07Z,   0.30,  10.51,  11.12,  99.90,   0.31,
05/08 08Z,   0.40,   9.91,  10.62,  99.90,   0.31,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/08 09Z,   0.40,   9.08,  99.90,   9.76,   0.28,
05/08 10Z,   0.40,   8.23,  99.90,   8.88,   0.25,
05/08 11Z,   0.40,   7.62,  99.90,   8.24,   0.22,
05/08 12Z,   0.40,   7.37,  99.90,   7.96,   0.19,  (min)
05/08 13Z,   0.40,   7.41,  99.90,   7.97,   0.16,
05/08 14Z,   0.40,   7.58,  99.90,   8.11,   0.13,
05/08 15Z,   0.40,   7.78,  99.90,   8.28,   0.10,
05/08 16Z,   0.40,   7.88,  99.90,   8.34,   0.07,  (max)
05/08 17Z,   0.40,   7.63,  99.90,   8.06,   0.04,
05/08 18Z,   0.40,   6.85,  99.90,   7.25,   0.01,
05/08 19Z,   0.40,   5.55,  99.90,   5.93,  -0.03,
05/08 20Z,   0.40,   3.94,  99.90,   4.28,  -0.06,
05/08 21Z,   0.40,   2.29,  99.90,   2.63,  -0.06,
05/08 22Z,   0.40,   0.95,  99.90,   1.29,  -0.06,
05/08 23Z,   0.40,   0.33,  99.90,   0.67,  -0.06,  (min)
05/09 00Z,   0.40,   0.70,  99.90,   1.04,  -0.06,
05/09 01Z,   0.40,   1.98,  99.90,   2.33,  -0.06,
05/09 02Z,   0.40,   3.85,  99.90,   4.19,  -0.06,
05/09 03Z,   0.40,   5.92,  99.90,   6.26,  -0.06,
05/09 04Z,   0.40,   7.90,  99.90,   8.24,  -0.06,
05/09 05Z,   0.40,   9.48,  99.90,   9.82,  -0.06,
05/09 06Z,   0.40,  10.41,  99.90,  10.76,  -0.06,
05/09 07Z,   0.40,  10.66,  99.90,  11.00,  -0.06,  (max)
05/09 08Z,   0.40,  10.36,  99.90,  10.70,  -0.06,
05/09 09Z,   0.40,   9.67,  99.90,  10.02,  -0.06,
05/09 10Z,   0.40,   8.75,  99.90,   9.10,  -0.06,
05/09 11Z,   0.40,   7.82,  99.90,   8.17,  -0.06,
05/09 12Z,   0.30,   7.14,  99.90,   7.38,  -0.06,
05/09 13Z,   0.30,   6.81,  99.90,   7.06,  -0.06,
05/09 14Z,   0.30,   6.79,  99.90,   7.04,  -0.06,  (min)
05/09 15Z,   0.30,   6.95,  99.90,   7.19,  -0.06,
05/09 16Z,   0.30,   7.20,  99.90,   7.45,  -0.06,
05/09 17Z,   0.30,   7.39,  99.90,   7.64,  -0.06,  (max)
05/09 18Z,   0.30,   7.27,  99.90,   7.51,  -0.06,
05/09 19Z,   0.30,   6.63,  99.90,   6.87,  -0.06,
05/09 20Z,   0.30,   5.52,  99.90,   5.76,  -0.06,
05/09 21Z,   0.30,   4.12,  99.90,   4.36,  -0.06,
05/09 22Z,   0.30,   2.68,  99.90,   2.92,  -0.06,
05/09 23Z,   0.30,   1.52,  99.90,   1.76,  -0.06,
05/10 00Z,   0.30,   1.03,  99.90,   1.27,  -0.06,  (min)
05/10 01Z,   0.30,   1.44,  99.90,   1.69,  -0.06,
05/10 02Z,   0.30,   2.68,  99.90,   2.92,  -0.06,
05/10 03Z,   0.30,   4.44,  99.90,   4.68,  -0.06,
05/10 04Z,   0.30,   6.40,  99.90,   6.64,  -0.06,
05/10 05Z,   0.30,   8.27,  99.90,   8.52,  -0.06,
05/10 06Z,   0.40,   9.74,  99.90,  10.08,  -0.06,
05/10 07Z,   0.40,  10.55,  99.90,  10.90,  -0.06,
05/10 08Z,   0.40,  10.66,  99.90,  11.01,  -0.06,  (max)
05/10 09Z,   0.40,  10.20,  99.90,  10.55,  -0.06,
05/10 10Z,   0.40,   9.33,  99.90,   9.67,  -0.06,
05/10 11Z,   0.40,   8.20,  99.90,   8.55,  -0.06,
05/10 12Z,   0.40,   7.09,  99.90,   7.43,  -0.06,
05/10 13Z,   0.40,   6.27,  99.90,   6.61,  -0.06,
05/10 14Z,   0.40,   5.89,  99.90,   6.23,  -0.06,  (min)
05/10 15Z,   0.40,   5.90,  99.90,   6.24,  -0.06,
05/10 16Z,   0.40,   6.19,  99.90,   6.53,  -0.06,
05/10 17Z,   0.40,   6.65,  99.90,   7.00,  -0.06,
05/10 18Z,   0.40,   7.07,  99.90,   7.42,  -0.06,
05/10 19Z,   0.40,   7.16,  99.90,   7.51,  -0.06,  (max)
05/10 20Z,   0.40,   6.73,  99.90,   7.07,  -0.06,
05/10 21Z,   0.40,   5.82,  99.90,   6.16,  -0.06,
05/10 22Z,   0.40,   4.60,  99.90,   4.95,  -0.06,
05/10 23Z,   0.40,   3.31,  99.90,   3.65,  -0.06,
05/11 00Z,   0.40,   2.25,  99.90,   2.59,  -0.06,
05/11 01Z,   0.40,   1.81,  99.90,   2.16,  -0.06,  (min)
05/11 02Z,   0.40,   2.23,  99.90,   2.57,  -0.06,
05/11 03Z,   0.40,   3.41,  99.90,   3.76,  -0.06,
05/11 04Z,   0.40,   5.10,  99.90,   5.45,  -0.06,
05/11 05Z,   0.50,   7.01,  99.90,   7.45,  -0.06,
05/11 06Z,   0.50,   8.81,  99.90,   9.25,  -0.06,
05/11 07Z,   0.50,  10.16,  99.90,  10.60,  -0.06,
05/11 08Z,   0.50,  10.78,  99.90,  11.23,  -0.06,  (max)
05/11 09Z,   0.40,  10.65,  99.90,  11.00,  -0.06,
05/11 10Z,   0.40,   9.91,  99.90,  10.25,  -0.06,
05/11 11Z,   0.40,   8.70,  99.90,   9.05,  -0.06,
05/11 12Z,   0.40,   7.25,  99.90,   7.60,  -0.06,
05/11 13Z,   0.40,   5.89,  99.90,   6.23,  -0.06,
05/11 14Z,   0.30,   4.96,  99.90,   5.21,  -0.06,
05/11 15Z,   0.30,   4.63,  99.90,   4.87,  -0.06,  (min)
05/11 16Z,   0.30,   4.83,  99.90,   5.08,  -0.06,
05/11 17Z,   0.30,   5.44,  99.90,   5.69,  -0.06,
05/11 18Z,   0.30,   6.28,  99.90,   6.52,  -0.06,
05/11 19Z,   0.20,   7.04,  99.90,   7.18,  -0.06,
05/11 20Z,   0.20,   7.40,  99.90,   7.54,  -0.06,  (max)
05/11 21Z,   0.20,   7.18,  99.90,   7.32,  -0.06,
05/11 22Z,   0.20,   6.44,  99.90,   6.59,  -0.06,
05/11 23Z,   0.20,   5.35,  99.90,   5.50,  -0.06,
05/12 00Z,   0.20,   4.13,  99.90,   4.27,  -0.06,