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 : 10/17/2026 14:22:45 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/15 18Z,   0.60,  -3.11,  -3.10,  99.90,  -0.59,
10/15 19Z,   0.60,  -3.91,  -3.87,  99.90,  -0.56,
10/15 20Z,   0.60,  -4.83,  -4.90,  99.90,  -0.67,
10/15 21Z,   0.50,  -5.57,  -5.71,  99.90,  -0.64,
10/15 22Z,   0.50,  -5.87,  -6.02,  99.90,  -0.65,  (min)
10/15 23Z,   0.50,  -5.71,  -5.81,  99.90,  -0.60,
10/16 00Z,   0.60,  -5.27,  -5.21,  99.90,  -0.54,
10/16 01Z,   0.60,  -4.75,  -4.58,  99.90,  -0.43,
10/16 02Z,   0.60,  -4.35,  -4.09,  99.90,  -0.34,
10/16 03Z,   0.60,  -4.35,  -4.02,  99.90,  -0.27,  (max)
10/16 04Z,   0.60,  -4.97,  -4.61,  99.90,  -0.24,
10/16 05Z,   0.60,  -6.28,  -5.91,  99.90,  -0.23,
10/16 06Z,   0.60,  -8.10,  -7.73,  99.90,  -0.23,
10/16 07Z,   0.60, -10.14,  -9.89,  99.90,  -0.35,
10/16 08Z,   0.60, -12.05, -11.82,  99.90,  -0.37,
10/16 09Z,   0.60, -13.37, -12.98,  99.90,  -0.21,
10/16 10Z,   0.60, -13.66, -13.13,  99.90,  -0.07,  (min)
10/16 11Z,   0.70, -12.81, -12.25,  99.90,  -0.14,
10/16 12Z,   0.70, -11.08, -10.70,  99.90,  -0.32,
10/16 13Z,   0.70,  -8.90,  -8.48,  99.90,  -0.28,
10/16 14Z,   0.70,  -6.67,  -6.22,  99.90,  -0.25,
10/16 15Z,   0.70,  -4.77,  -4.34,  99.90,  -0.27,
10/16 16Z,   0.70,  -3.47,  -3.06,  99.90,  -0.29,
10/16 17Z,   0.70,  -2.88,  -2.49,  99.90,  -0.31,
10/16 18Z,   0.80,  -2.89,  -2.49,  99.90,  -0.40,  (max)
10/16 19Z,   0.80,  -3.30,  -2.88,  99.90,  -0.38,
10/16 20Z,   0.80,  -3.97,  -3.57,  99.90,  -0.40,
10/16 21Z,   0.80,  -4.73,  -4.38,  99.90,  -0.45,
10/16 22Z,   0.80,  -5.34,  -5.08,  99.90,  -0.54,
10/16 23Z,   0.80,  -5.62,  -5.35,  99.90,  -0.53,  (min)
10/17 00Z,   0.90,  -5.58,  -5.18,  99.90,  -0.50,
10/17 01Z,   0.90,  -5.36,  -4.83,  99.90,  -0.37,
10/17 02Z,   0.90,  -5.10,  -4.45,  99.90,  -0.25,
10/17 03Z,   1.00,  -4.92,  -4.23,  99.90,  -0.31,  (max)
10/17 04Z,   1.00,  -5.05,  -4.36,  99.90,  -0.31,
10/17 05Z,   1.00,  -5.71,  -5.08,  99.90,  -0.37,
10/17 06Z,   1.00,  -6.93,  -6.38,  99.90,  -0.45,
10/17 07Z,   1.00,  -8.56,  -8.05,  99.90,  -0.49,
10/17 08Z,   1.00, -10.33,  -9.92,  99.90,  -0.59,
10/17 09Z,   1.10, -11.93, -11.46,  99.90,  -0.63,
10/17 10Z,   1.10, -12.93, -12.26,  99.90,  -0.43,  (min)
10/17 11Z,   1.10, -12.99, -12.12,  99.90,  -0.23,
10/17 12Z,   1.10, -12.06, -11.29,  99.90,  -0.33,
10/17 13Z,   1.10, -10.43,  -9.78,  99.90,  -0.45,
10/17 14Z,   1.10,  -8.47,  -7.74,  99.90,  -0.37,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/17 15Z,   1.10,  -6.49,  99.90,  -5.77,  -0.38,
10/17 16Z,   1.10,  -4.80,  99.90,  -4.09,  -0.39,
10/17 17Z,   1.10,  -3.66,  99.90,  -2.95,  -0.39,
10/17 18Z,   1.10,  -3.12,  99.90,  -2.43,  -0.40,
10/17 19Z,   1.10,  -3.09,  99.90,  -2.40,  -0.41,  (max)
10/17 20Z,   1.10,  -3.41,  99.90,  -2.73,  -0.42,
10/17 21Z,   1.10,  -3.99,  99.90,  -3.32,  -0.43,
10/17 22Z,   1.10,  -4.68,  99.90,  -4.02,  -0.43,
10/17 23Z,   1.10,  -5.28,  99.90,  -4.63,  -0.44,
10/18 00Z,   1.00,  -5.64,  99.90,  -5.09,  -0.45,
10/18 01Z,   1.00,  -5.78,  99.90,  -5.23,  -0.46,  (min)
10/18 02Z,   1.00,  -5.77,  99.90,  -5.23,  -0.47,
10/18 03Z,   1.00,  -5.65,  99.90,  -5.12,  -0.47,
10/18 04Z,   1.00,  -5.54,  99.90,  -5.00,  -0.47,  (max)
10/18 05Z,   1.00,  -5.65,  99.90,  -5.11,  -0.47,
10/18 06Z,   1.00,  -6.20,  99.90,  -5.67,  -0.47,
10/18 07Z,   1.00,  -7.25,  99.90,  -6.71,  -0.47,
10/18 08Z,   1.00,  -8.64,  99.90,  -8.10,  -0.47,
10/18 09Z,   0.90, -10.16,  99.90,  -9.73,  -0.47,
10/18 10Z,   0.90, -11.53,  99.90, -11.10,  -0.47,
10/18 11Z,   0.90, -12.36,  99.90, -11.92,  -0.47,  (min)
10/18 12Z,   0.90, -12.35,  99.90, -11.91,  -0.47,
10/18 13Z,   0.90, -11.49,  99.90, -11.06,  -0.47,
10/18 14Z,   0.90, -10.04,  99.90,  -9.60,  -0.47,
10/18 15Z,   0.90,  -8.28,  99.90,  -7.84,  -0.47,
10/18 16Z,   0.80,  -6.47,  99.90,  -6.13,  -0.47,
10/18 17Z,   0.80,  -4.89,  99.90,  -4.55,  -0.47,
10/18 18Z,   0.80,  -3.79,  99.90,  -3.45,  -0.47,
10/18 19Z,   0.80,  -3.24,  99.90,  -2.91,  -0.47,
10/18 20Z,   0.80,  -3.16,  99.90,  -2.82,  -0.47,  (max)
10/18 21Z,   0.80,  -3.44,  99.90,  -3.11,  -0.47,
10/18 22Z,   0.90,  -4.02,  99.90,  -3.59,  -0.47,
10/18 23Z,   0.90,  -4.78,  99.90,  -4.35,  -0.47,
10/19 00Z,   0.90,  -5.49,  99.90,  -5.06,  -0.47,
10/19 01Z,   0.90,  -6.01,  99.90,  -5.57,  -0.47,
10/19 02Z,   0.90,  -6.30,  99.90,  -5.86,  -0.47,
10/19 03Z,   0.90,  -6.39,  99.90,  -5.95,  -0.47,  (min)
10/19 04Z,   0.90,  -6.28,  99.90,  -5.84,  -0.47,
10/19 05Z,   1.00,  -6.07,  99.90,  -5.53,  -0.47,
10/19 06Z,   1.00,  -6.03,  99.90,  -5.49,  -0.47,  (max)
10/19 07Z,   1.00,  -6.40,  99.90,  -5.86,  -0.47,
10/19 08Z,   1.00,  -7.23,  99.90,  -6.69,  -0.47,
10/19 09Z,   1.00,  -8.41,  99.90,  -7.88,  -0.47,
10/19 10Z,   1.00,  -9.77,  99.90,  -9.24,  -0.47,
10/19 11Z,   1.00, -11.03,  99.90, -10.50,  -0.47,
10/19 12Z,   1.10, -11.82,  99.90, -11.19,  -0.47,
10/19 13Z,   1.10, -11.86,  99.90, -11.22,  -0.47,  (min)
10/19 14Z,   1.10, -11.12,  99.90, -10.49,  -0.47,
10/19 15Z,   1.10,  -9.81,  99.90,  -9.18,  -0.47,
10/19 16Z,   1.10,  -8.16,  99.90,  -7.53,  -0.47,
10/19 17Z,   1.10,  -6.40,  99.90,  -5.77,  -0.47,
10/19 18Z,   1.10,  -4.83,  99.90,  -4.19,  -0.47,
10/19 19Z,   1.10,  -3.72,  99.90,  -3.08,  -0.47,
10/19 20Z,   1.10,  -3.16,  99.90,  -2.53,  -0.47,
10/19 21Z,   1.10,  -3.10,  99.90,  -2.46,  -0.47,  (max)
10/19 22Z,   1.10,  -3.47,  99.90,  -2.83,  -0.47,
10/19 23Z,   1.10,  -4.21,  99.90,  -3.58,  -0.47,
10/20 00Z,   1.10,  -5.17,  99.90,  -4.53,  -0.47,
10/20 01Z,   1.10,  -6.07,  99.90,  -5.44,  -0.47,
10/20 02Z,   1.10,  -6.73,  99.90,  -6.10,  -0.47,
10/20 03Z,   1.10,  -7.09,  99.90,  -6.45,  -0.47,
10/20 04Z,   1.10,  -7.12,  99.90,  -6.48,  -0.47,  (min)
10/20 05Z,   1.10,  -6.83,  99.90,  -6.19,  -0.47,
10/20 06Z,   1.10,  -6.39,  99.90,  -5.75,  -0.47,
10/20 07Z,   1.10,  -6.11,  99.90,  -5.48,  -0.47,  (max)
10/20 08Z,   1.10,  -6.28,  99.90,  -5.64,  -0.47,
10/20 09Z,   1.10,  -6.93,  99.90,  -6.30,  -0.47,
10/20 10Z,   1.10,  -7.99,  99.90,  -7.36,  -0.47,
10/20 11Z,   1.10,  -9.30,  99.90,  -8.66,  -0.47,
10/20 12Z,   1.10, -10.56,  99.90,  -9.93,  -0.47,
10/20 13Z,   1.10, -11.40,  99.90, -10.77,  -0.47,
10/20 14Z,   1.10, -11.50,  99.90, -10.87,  -0.47,  (min)
10/20 15Z,   1.10, -10.84,  99.90, -10.21,  -0.47,
10/20 16Z,   1.10,  -9.58,  99.90,  -8.94,  -0.47,
10/20 17Z,   1.00,  -7.91,  99.90,  -7.37,  -0.47,
10/20 18Z,   1.00,  -6.09,  99.90,  -5.56,  -0.47,
10/20 19Z,   1.00,  -4.49,  99.90,  -3.95,  -0.47,
10/20 20Z,   1.00,  -3.40,  99.90,  -2.86,  -0.47,
10/20 21Z,   1.00,  -2.93,  99.90,  -2.39,  -0.47,  (max)
10/20 22Z,   1.00,  -3.04,  99.90,  -2.50,  -0.47,
10/20 23Z,   1.00,  -3.67,  99.90,  -3.14,  -0.47,
10/21 00Z,   0.90,  -4.74,  99.90,  -4.30,  -0.47,
10/21 01Z,   1.00,  -5.98,  99.90,  -5.45,  -0.47,
10/21 02Z,   0.90,  -7.08,  99.90,  -6.65,  -0.47,
10/21 03Z,   0.90,  -7.79,  99.90,  -7.35,  -0.47,
10/21 04Z,   0.90,  -8.03,  99.90,  -7.60,  -0.47,  (min)
10/21 05Z,   0.90,  -7.80,  99.90,  -7.36,  -0.47,
10/21 06Z,   0.90,  -7.17,  99.90,  -6.74,  -0.47,