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 : 08/09/2026 10:22:01 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/07 18Z,   0.50,   6.45,   6.99,  99.90,   0.04,
08/07 19Z,   0.50,   7.92,   8.53,  99.90,   0.11,
08/07 20Z,   0.50,   8.81,   9.39,  99.90,   0.08,
08/07 21Z,   0.50,   9.17,   9.76,  99.90,   0.09,  (max)
08/07 22Z,   0.50,   9.17,   9.73,  99.90,   0.06,
08/07 23Z,   0.50,   8.91,   9.39,  99.90,  -0.02,
08/08 00Z,   0.60,   8.51,   8.93,  99.90,  -0.18,
08/08 01Z,   0.60,   8.19,   8.61,  99.90,  -0.18,
08/08 02Z,   0.70,   8.20,   8.61,  99.90,  -0.29,  (min)
08/08 03Z,   0.70,   8.60,   9.04,  99.90,  -0.26,
08/08 04Z,   0.70,   9.27,   9.73,  99.90,  -0.24,
08/08 05Z,   0.70,  10.02,  10.45,  99.90,  -0.27,
08/08 06Z,   0.70,  10.64,  11.00,  99.90,  -0.34,
08/08 07Z,   0.70,  10.83,  11.10,  99.90,  -0.43,  (max)
08/08 08Z,   0.70,  10.29,  10.53,  99.90,  -0.46,
08/08 09Z,   0.70,   8.94,   9.15,  99.90,  -0.49,
08/08 10Z,   0.70,   6.94,   7.16,  99.90,  -0.48,
08/08 11Z,   0.70,   4.53,   4.65,  99.90,  -0.58,
08/08 12Z,   0.60,   2.07,   2.10,  99.90,  -0.57,
08/08 13Z,   0.60,   0.02,   0.15,  99.90,  -0.47,
08/08 14Z,   0.60,  -1.12,  -0.81,  99.90,  -0.29,  (min)
08/08 15Z,   0.60,  -1.07,  -0.59,  99.90,  -0.12,
08/08 16Z,   0.60,   0.06,   0.56,  99.90,  -0.10,
08/08 17Z,   0.60,   1.93,   2.38,  99.90,  -0.15,
08/08 18Z,   0.50,   4.15,   4.71,  99.90,   0.06,
08/08 19Z,   0.50,   6.33,   6.99,  99.90,   0.16,
08/08 20Z,   0.50,   8.10,   8.79,  99.90,   0.19,
08/08 21Z,   0.50,   9.29,   9.95,  99.90,   0.16,
08/08 22Z,   0.50,   9.92,  10.48,  99.90,   0.06,
08/08 23Z,   0.50,  10.10,  10.54,  99.90,  -0.06,  (max)
08/09 00Z,   0.60,   9.86,  10.28,  99.90,  -0.18,
08/09 01Z,   0.60,   9.32,   9.78,  99.90,  -0.14,
08/09 02Z,   0.60,   8.75,   9.20,  99.90,  -0.15,
08/09 03Z,   0.60,   8.46,   8.92,  99.90,  -0.14,  (min)
08/09 04Z,   0.60,   8.59,   9.04,  99.90,  -0.15,
08/09 05Z,   0.60,   9.08,   9.52,  99.90,  -0.16,
08/09 06Z,   0.60,   9.77,  10.18,  99.90,  -0.19,
08/09 07Z,   0.60,  10.43,  10.68,  99.90,  -0.35,
08/09 08Z,   0.70,  10.68,  10.86,  99.90,  -0.52,  (max)
08/09 09Z,   0.70,  10.19,  10.39,  99.90,  -0.50,
08/09 10Z,   0.70,   8.87,   9.11,  99.90,  -0.46,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/09 11Z,   0.60,   6.84,  99.90,   7.00,  -0.44,
08/09 12Z,   0.60,   4.34,  99.90,   4.52,  -0.42,
08/09 13Z,   0.60,   1.71,  99.90,   1.91,  -0.40,
08/09 14Z,   0.60,  -0.52,  99.90,  -0.30,  -0.38,
08/09 15Z,   0.60,  -1.77,  99.90,  -1.54,  -0.36,  (min)
08/09 16Z,   0.60,  -1.76,  99.90,  -1.50,  -0.34,
08/09 17Z,   0.60,  -0.55,  99.90,  -0.27,  -0.32,
08/09 18Z,   0.60,   1.51,  99.90,   1.81,  -0.30,
08/09 19Z,   0.60,   4.01,  99.90,   4.33,  -0.29,
08/09 20Z,   0.60,   6.48,  99.90,   6.82,  -0.27,
08/09 21Z,   0.60,   8.52,  99.90,   8.87,  -0.25,
08/09 22Z,   0.60,   9.90,  99.90,  10.28,  -0.23,
08/09 23Z,   0.60,  10.66,  99.90,  11.03,  -0.23,
08/10 00Z,   0.60,  10.81,  99.90,  11.19,  -0.23,  (max)
08/10 01Z,   0.60,  10.40,  99.90,  10.78,  -0.23,
08/10 02Z,   0.60,   9.58,  99.90,   9.95,  -0.23,
08/10 03Z,   0.60,   8.70,  99.90,   9.07,  -0.23,
08/10 04Z,   0.70,   8.17,  99.90,   8.64,  -0.23,
08/10 05Z,   0.70,   8.16,  99.90,   8.64,  -0.23,  (min)
08/10 06Z,   0.70,   8.66,  99.90,   9.13,  -0.23,
08/10 07Z,   0.70,   9.47,  99.90,   9.95,  -0.23,
08/10 08Z,   0.70,  10.30,  99.90,  10.77,  -0.23,
08/10 09Z,   0.70,  10.69,  99.90,  11.16,  -0.23,  (max)
08/10 10Z,   0.70,  10.28,  99.90,  10.76,  -0.23,
08/10 11Z,   0.70,   8.97,  99.90,   9.44,  -0.23,
08/10 12Z,   0.60,   6.87,  99.90,   7.24,  -0.23,
08/10 13Z,   0.60,   4.21,  99.90,   4.58,  -0.23,
08/10 14Z,   0.60,   1.38,  99.90,   1.75,  -0.23,
08/10 15Z,   0.60,  -1.01,  99.90,  -0.64,  -0.23,
08/10 16Z,   0.60,  -2.32,  99.90,  -1.95,  -0.23,  (min)
08/10 17Z,   0.60,  -2.24,  99.90,  -1.86,  -0.23,
08/10 18Z,   0.60,  -0.85,  99.90,  -0.48,  -0.23,
08/10 19Z,   0.60,   1.47,  99.90,   1.84,  -0.23,
08/10 20Z,   0.60,   4.25,  99.90,   4.62,  -0.23,
08/10 21Z,   0.60,   6.96,  99.90,   7.33,  -0.23,
08/10 22Z,   0.60,   9.14,  99.90,   9.51,  -0.23,
08/10 23Z,   0.60,  10.57,  99.90,  10.95,  -0.23,
08/11 00Z,   0.60,  11.25,  99.90,  11.63,  -0.23,  (max)
08/11 01Z,   0.60,  11.20,  99.90,  11.58,  -0.23,
08/11 02Z,   0.60,  10.47,  99.90,  10.84,  -0.23,
08/11 03Z,   0.60,   9.28,  99.90,   9.66,  -0.23,
08/11 04Z,   0.60,   8.13,  99.90,   8.50,  -0.23,
08/11 05Z,   0.60,   7.47,  99.90,   7.84,  -0.23,  (min)
08/11 06Z,   0.60,   7.49,  99.90,   7.87,  -0.23,
08/11 07Z,   0.60,   8.15,  99.90,   8.53,  -0.23,
08/11 08Z,   0.60,   9.21,  99.90,   9.59,  -0.23,
08/11 09Z,   0.60,  10.26,  99.90,  10.63,  -0.23,
08/11 10Z,   0.60,  10.79,  99.90,  11.17,  -0.23,  (max)
08/11 11Z,   0.60,  10.43,  99.90,  10.80,  -0.23,
08/11 12Z,   0.60,   9.08,  99.90,   9.45,  -0.23,
08/11 13Z,   0.60,   6.86,  99.90,   7.23,  -0.23,
08/11 14Z,   0.60,   4.02,  99.90,   4.40,  -0.23,
08/11 15Z,   0.60,   1.04,  99.90,   1.41,  -0.23,
08/11 16Z,   0.60,  -1.41,  99.90,  -1.03,  -0.23,
08/11 17Z,   0.50,  -2.64,  99.90,  -2.37,  -0.23,  (min)
08/11 18Z,   0.50,  -2.36,  99.90,  -2.08,  -0.23,
08/11 19Z,   0.50,  -0.70,  99.90,  -0.43,  -0.23,
08/11 20Z,   0.50,   1.91,  99.90,   2.18,  -0.23,
08/11 21Z,   0.50,   4.91,  99.90,   5.19,  -0.23,
08/11 22Z,   0.50,   7.74,  99.90,   8.01,  -0.23,
08/11 23Z,   0.50,   9.90,  99.90,  10.17,  -0.23,
08/12 00Z,   0.50,  11.20,  99.90,  11.47,  -0.23,
08/12 01Z,   0.50,  11.62,  99.90,  11.90,  -0.23,  (max)
08/12 02Z,   0.50,  11.21,  99.90,  11.48,  -0.23,
08/12 03Z,   0.60,  10.05,  99.90,  10.42,  -0.23,
08/12 04Z,   0.60,   8.52,  99.90,   8.89,  -0.23,
08/12 05Z,   0.60,   7.18,  99.90,   7.55,  -0.23,
08/12 06Z,   0.60,   6.53,  99.90,   6.90,  -0.23,  (min)
08/12 07Z,   0.60,   6.73,  99.90,   7.10,  -0.23,
08/12 08Z,   0.60,   7.66,  99.90,   8.03,  -0.23,
08/12 09Z,   0.60,   8.99,  99.90,   9.37,  -0.23,
08/12 10Z,   0.60,  10.24,  99.90,  10.61,  -0.23,
08/12 11Z,   0.60,  10.86,  99.90,  11.23,  -0.23,  (max)
08/12 12Z,   0.60,  10.48,  99.90,  10.85,  -0.23,
08/12 13Z,   0.60,   9.05,  99.90,   9.42,  -0.23,
08/12 14Z,   0.60,   6.71,  99.90,   7.09,  -0.23,
08/12 15Z,   0.60,   3.77,  99.90,   4.14,  -0.23,
08/12 16Z,   0.60,   0.75,  99.90,   1.12,  -0.23,
08/12 17Z,   0.60,  -1.59,  99.90,  -1.21,  -0.23,
08/12 18Z,   0.60,  -2.57,  99.90,  -2.20,  -0.23,  (min)
08/12 19Z,   0.60,  -1.97,  99.90,  -1.60,  -0.23,
08/12 20Z,   0.60,  -0.01,  99.90,   0.37,  -0.23,
08/12 21Z,   0.60,   2.84,  99.90,   3.21,  -0.23,
08/12 22Z,   0.60,   5.96,  99.90,   6.33,  -0.23,
08/12 23Z,   0.60,   8.73,  99.90,   9.11,  -0.23,
08/13 00Z,   0.60,  10.70,  99.90,  11.07,  -0.23,
08/13 01Z,  99.90,  11.68,  99.90,  99.90,  -0.23,
08/13 02Z,  99.90,  11.69,  99.90,  99.90,  -0.23,
08/13 03Z,  99.90,  10.80,  99.90,  99.90,  -0.23,
08/13 04Z,  99.90,   9.21,  99.90,  99.90,  -0.23,
08/13 05Z,  99.90,   7.40,  99.90,  99.90,  -0.23,
08/13 06Z,  99.90,   6.01,  99.90,  99.90,  -0.23,