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 : 08/19/2026 23:23:58 GMT (units in feet MHHW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/18 06Z,   0.60,  -2.08,  -1.47,  99.90,   0.01,
08/18 07Z,   0.60,  -4.11,  -3.50,  99.90,   0.01,
08/18 08Z,   0.60,  -6.42,  -5.96,  99.90,  -0.14,
08/18 09Z,   0.60,  -8.49,  -8.07,  99.90,  -0.18,
08/18 10Z,   0.60,  -9.78,  -9.36,  99.90,  -0.18,
08/18 11Z,   0.60,  -9.98,  -9.55,  99.90,  -0.17,  (min)
08/18 12Z,   0.50,  -9.18,  -8.77,  99.90,  -0.09,
08/18 13Z,   0.50,  -7.68,  -7.38,  99.90,  -0.20,
08/18 14Z,   0.50,  -5.88,  -5.58,  99.90,  -0.20,
08/18 15Z,   0.50,  -4.18,  -3.83,  99.90,  -0.15,
08/18 16Z,   0.50,  -2.98,  -2.63,  99.90,  -0.15,
08/18 17Z,   0.50,  -2.50,  -2.16,  99.90,  -0.16,  (max)
08/18 18Z,   0.50,  -2.69,  -2.39,  99.90,  -0.20,
08/18 19Z,   0.50,  -3.38,  -3.01,  99.90,  -0.13,
08/18 20Z,   0.50,  -4.35,  -3.90,  99.90,  -0.05,
08/18 21Z,   0.50,  -5.34,  -4.91,  99.90,  -0.07,
08/18 22Z,   0.50,  -5.96,  -5.58,  99.90,  -0.12,  (min)
08/18 23Z,   0.50,  -5.93,  -5.56,  99.90,  -0.13,
08/19 00Z,   0.50,  -5.23,  -4.81,  99.90,  -0.08,
08/19 01Z,   0.50,  -4.07,  -3.61,  99.90,  -0.04,
08/19 02Z,   0.50,  -2.73,  -2.22,  99.90,   0.01,
08/19 03Z,   0.50,  -1.50,  -0.92,  99.90,   0.08,
08/19 04Z,   0.50,  -0.74,  -0.16,  99.90,   0.08,  (max)
08/19 05Z,   0.50,  -0.75,  -0.20,  99.90,   0.05,
08/19 06Z,   0.60,  -1.62,  -1.06,  99.90,  -0.04,
08/19 07Z,   0.60,  -3.20,  -2.55,  99.90,   0.05,
08/19 08Z,   0.60,  -5.23,  -4.67,  99.90,  -0.04,
08/19 09Z,   0.60,  -7.38,  -6.95,  99.90,  -0.17,
08/19 10Z,   0.50,  -9.19,  -8.80,  99.90,  -0.11,
08/19 11Z,   0.50, -10.19,  -9.79,  99.90,  -0.10,  (min)
08/19 12Z,   0.50, -10.17,  -9.78,  99.90,  -0.11,
08/19 13Z,   0.50,  -9.28,  -8.94,  99.90,  -0.16,
08/19 14Z,   0.50,  -7.81,  -7.55,  99.90,  -0.24,
08/19 15Z,   0.50,  -6.08,  -5.80,  99.90,  -0.22,
08/19 16Z,   0.50,  -4.45,  -4.12,  99.90,  -0.17,
08/19 17Z,   0.50,  -3.27,  -2.90,  99.90,  -0.13,
08/19 18Z,   0.50,  -2.69,  -2.33,  99.90,  -0.14,
08/19 19Z,   0.50,  -2.64,  -2.23,  99.90,  -0.09,  (max)
08/19 20Z,   0.50,  -2.96,  -2.52,  99.90,  -0.06,
08/19 21Z,   0.50,  -3.53,  -3.05,  99.90,  -0.02,
08/19 22Z,   0.50,  -4.16,  -3.65,  99.90,   0.01,
08/19 23Z,   0.50,  -4.55,  -4.06,  99.90,  -0.01,  (min)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/20 00Z,   0.50,  -4.51,  99.90,  -4.03,  -0.02,
08/20 01Z,   0.50,  -4.05,  99.90,  -3.58,  -0.03,
08/20 02Z,   0.50,  -3.31,  99.90,  -2.84,  -0.04,
08/20 03Z,   0.50,  -2.45,  99.90,  -1.99,  -0.05,
08/20 04Z,   0.50,  -1.67,  99.90,  -1.22,  -0.05,
08/20 05Z,   0.60,  -1.28,  99.90,  -0.75,  -0.06,  (max)
08/20 06Z,   0.60,  -1.56,  99.90,  -1.04,  -0.07,
08/20 07Z,   0.60,  -2.56,  99.90,  -2.04,  -0.08,
08/20 08Z,   0.60,  -4.12,  99.90,  -3.61,  -0.09,
08/20 09Z,   0.60,  -6.03,  99.90,  -5.53,  -0.10,
08/20 10Z,   0.60,  -7.98,  99.90,  -7.49,  -0.11,
08/20 11Z,   0.60,  -9.55,  99.90,  -9.07,  -0.12,
08/20 12Z,   0.60, -10.34,  99.90,  -9.86,  -0.12,  (min)
08/20 13Z,   0.60, -10.22,  99.90,  -9.74,  -0.12,
08/20 14Z,   0.60,  -9.33,  99.90,  -8.85,  -0.12,
08/20 15Z,   0.60,  -7.93,  99.90,  -7.44,  -0.12,
08/20 16Z,   0.60,  -6.27,  99.90,  -5.78,  -0.12,
08/20 17Z,   0.60,  -4.67,  99.90,  -4.19,  -0.12,
08/20 18Z,   0.60,  -3.44,  99.90,  -2.96,  -0.12,
08/20 19Z,   0.60,  -2.71,  99.90,  -2.22,  -0.12,
08/20 20Z,   0.60,  -2.39,  99.90,  -1.90,  -0.12,  (max)
08/20 21Z,   0.60,  -2.39,  99.90,  -1.91,  -0.12,
08/20 22Z,   0.60,  -2.67,  99.90,  -2.18,  -0.12,
08/20 23Z,   0.60,  -3.09,  99.90,  -2.61,  -0.12,
08/21 00Z,   0.60,  -3.45,  99.90,  -2.97,  -0.12,
08/21 01Z,   0.60,  -3.57,  99.90,  -3.09,  -0.12,  (min)
08/21 02Z,   0.60,  -3.44,  99.90,  -2.96,  -0.12,
08/21 03Z,   0.60,  -3.10,  99.90,  -2.62,  -0.12,
08/21 04Z,   0.60,  -2.61,  99.90,  -2.12,  -0.12,
08/21 05Z,   0.60,  -2.12,  99.90,  -1.64,  -0.12,
08/21 06Z,   0.60,  -1.93,  99.90,  -1.44,  -0.12,  (max)
08/21 07Z,   0.60,  -2.29,  99.90,  -1.81,  -0.12,
08/21 08Z,   0.60,  -3.26,  99.90,  -2.78,  -0.12,
08/21 09Z,   0.60,  -4.71,  99.90,  -4.23,  -0.12,
08/21 10Z,   0.60,  -6.47,  99.90,  -5.99,  -0.12,
08/21 11Z,   0.60,  -8.27,  99.90,  -7.78,  -0.12,
08/21 12Z,   0.60,  -9.70,  99.90,  -9.21,  -0.12,
08/21 13Z,   0.60, -10.40,  99.90,  -9.92,  -0.12,  (min)
08/21 14Z,   0.60, -10.27,  99.90,  -9.79,  -0.12,
08/21 15Z,   0.60,  -9.44,  99.90,  -8.95,  -0.12,
08/21 16Z,   0.60,  -8.08,  99.90,  -7.59,  -0.12,
08/21 17Z,   0.60,  -6.42,  99.90,  -5.94,  -0.12,
08/21 18Z,   0.60,  -4.78,  99.90,  -4.30,  -0.12,
08/21 19Z,   0.60,  -3.45,  99.90,  -2.96,  -0.12,
08/21 20Z,   0.60,  -2.53,  99.90,  -2.04,  -0.12,
08/21 21Z,   0.60,  -1.97,  99.90,  -1.49,  -0.12,
08/21 22Z,   0.60,  -1.77,  99.90,  -1.28,  -0.12,  (max)
08/21 23Z,   0.60,  -1.91,  99.90,  -1.43,  -0.12,
08/22 00Z,   0.60,  -2.33,  99.90,  -1.85,  -0.12,
08/22 01Z,   0.60,  -2.82,  99.90,  -2.34,  -0.12,
08/22 02Z,   0.60,  -3.19,  99.90,  -2.71,  -0.12,
08/22 03Z,   0.60,  -3.37,  99.90,  -2.88,  -0.12,  (min)
08/22 04Z,   0.60,  -3.30,  99.90,  -2.82,  -0.12,
08/22 05Z,   0.60,  -3.00,  99.90,  -2.52,  -0.12,
08/22 06Z,   0.60,  -2.60,  99.90,  -2.12,  -0.12,
08/22 07Z,   0.60,  -2.43,  99.90,  -1.95,  -0.12,  (max)
08/22 08Z,   0.70,  -2.75,  99.90,  -2.17,  -0.12,
08/22 09Z,   0.70,  -3.63,  99.90,  -3.05,  -0.12,
08/22 10Z,   0.70,  -4.98,  99.90,  -4.40,  -0.12,
08/22 11Z,   0.60,  -6.67,  99.90,  -6.18,  -0.12,
08/22 12Z,   0.60,  -8.41,  99.90,  -7.93,  -0.12,
08/22 13Z,   0.60,  -9.82,  99.90,  -9.34,  -0.12,
08/22 14Z,   0.70, -10.54,  99.90,  -9.95,  -0.12,  (min)
08/22 15Z,   0.70, -10.44,  99.90,  -9.85,  -0.12,
08/22 16Z,   0.70,  -9.61,  99.90,  -9.02,  -0.12,
08/22 17Z,   0.70,  -8.21,  99.90,  -7.62,  -0.12,
08/22 18Z,   0.70,  -6.47,  99.90,  -5.88,  -0.12,
08/22 19Z,   0.70,  -4.71,  99.90,  -4.13,  -0.12,
08/22 20Z,   0.70,  -3.24,  99.90,  -2.66,  -0.12,
08/22 21Z,   0.70,  -2.17,  99.90,  -1.58,  -0.12,
08/22 22Z,   0.60,  -1.48,  99.90,  -1.00,  -0.12,
08/22 23Z,   0.60,  -1.22,  99.90,  -0.74,  -0.12,  (max)
08/23 00Z,   0.60,  -1.43,  99.90,  -0.94,  -0.12,
08/23 01Z,   0.60,  -2.00,  99.90,  -1.52,  -0.12,
08/23 02Z,   0.60,  -2.71,  99.90,  -2.22,  -0.12,
08/23 03Z,   0.60,  -3.31,  99.90,  -2.83,  -0.12,
08/23 04Z,   0.60,  -3.67,  99.90,  -3.19,  -0.12,
08/23 05Z,   0.60,  -3.70,  99.90,  -3.21,  -0.12,  (min)
08/23 06Z,   0.60,  -3.37,  99.90,  -2.89,  -0.12,
08/23 07Z,   0.60,  -2.90,  99.90,  -2.42,  -0.12,
08/23 08Z,   0.60,  -2.65,  99.90,  -2.16,  -0.12,  (max)
08/23 09Z,   0.60,  -2.89,  99.90,  -2.41,  -0.12,
08/23 10Z,   0.60,  -3.72,  99.90,  -3.23,  -0.12,
08/23 11Z,   0.60,  -5.06,  99.90,  -4.58,  -0.12,
08/23 12Z,   0.60,  -6.80,  99.90,  -6.31,  -0.12,
08/23 13Z,   0.60,  -8.62,  99.90,  -8.14,  -0.12,
08/23 14Z,   0.60, -10.09,  99.90,  -9.61,  -0.12,
08/23 15Z,   0.60, -10.83,  99.90, -10.35,  -0.12,  (min)
08/23 16Z,   0.60, -10.70,  99.90, -10.21,  -0.12,
08/23 17Z,   0.60,  -9.77,  99.90,  -9.29,  -0.12,
08/23 18Z,   0.60,  -8.21,  99.90,  -7.73,  -0.12,