EXTRA-TROPICAL  STORM  SURGE
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Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
Mid-Atlantic
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Alaska
Gulf of Alaska
Status
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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 : 07/20/2026 14:21:56 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/18 18Z,   0.50,   5.55,   6.19,  99.90,   0.14,
07/18 19Z,   0.50,   3.26,   3.78,  99.90,   0.02,
07/18 20Z,   0.50,   1.20,   1.59,  99.90,  -0.11,
07/18 21Z,   0.50,   0.03,   0.35,  99.90,  -0.18,  (min)
07/18 22Z,   0.50,   0.15,   0.46,  99.90,  -0.19,
07/18 23Z,   0.50,   1.54,   1.91,  99.90,  -0.13,
07/19 00Z,   0.60,   3.84,   4.20,  99.90,  -0.24,
07/19 01Z,   0.60,   6.54,   7.05,  99.90,  -0.09,
07/19 02Z,   0.60,   9.13,   9.69,  99.90,  -0.04,
07/19 03Z,   0.60,  11.08,  11.55,  99.90,  -0.13,
07/19 04Z,   0.60,  12.05,  12.38,  99.90,  -0.27,  (max)
07/19 05Z,   0.60,  11.97,  12.19,  99.90,  -0.38,
07/19 06Z,   0.60,  10.95,  11.21,  99.90,  -0.34,
07/19 07Z,   0.60,   9.19,   9.64,  99.90,  -0.15,
07/19 08Z,   0.60,   7.05,   7.48,  99.90,  -0.17,
07/19 09Z,   0.60,   5.09,   5.44,  99.90,  -0.25,
07/19 10Z,   0.60,   3.85,   4.21,  99.90,  -0.24,
07/19 11Z,   0.60,   3.59,   3.91,  99.90,  -0.28,  (min)
07/19 12Z,   0.50,   4.21,   4.56,  99.90,  -0.15,
07/19 13Z,   0.50,   5.41,   5.69,  99.90,  -0.22,
07/19 14Z,   0.50,   6.83,   7.05,  99.90,  -0.28,
07/19 15Z,   0.50,   8.02,   8.32,  99.90,  -0.20,
07/19 16Z,   0.50,   8.57,   8.91,  99.90,  -0.16,  (max)
07/19 17Z,   0.50,   8.29,   8.62,  99.90,  -0.17,
07/19 18Z,   0.40,   7.27,   7.62,  99.90,  -0.05,
07/19 19Z,   0.40,   5.72,   6.13,  99.90,   0.01,
07/19 20Z,   0.40,   3.96,   4.29,  99.90,  -0.07,
07/19 21Z,   0.40,   2.46,   2.74,  99.90,  -0.12,
07/19 22Z,   0.40,   1.75,   1.99,  99.90,  -0.16,  (min)
07/19 23Z,   0.40,   2.14,   2.39,  99.90,  -0.15,
07/20 00Z,   0.50,   3.54,   3.84,  99.90,  -0.20,
07/20 01Z,   0.50,   5.59,   5.92,  99.90,  -0.17,
07/20 02Z,   0.50,   7.89,   8.40,  99.90,   0.01,
07/20 03Z,   0.50,   9.99,  10.55,  99.90,   0.06,
07/20 04Z,   0.50,  11.42,  11.92,  99.90,  -0.00,
07/20 05Z,   0.50,  11.90,  12.31,  99.90,  -0.09,  (max)
07/20 06Z,   0.50,  11.39,  11.69,  99.90,  -0.20,
07/20 07Z,   0.50,  10.03,  10.44,  99.90,  -0.09,
07/20 08Z,   0.60,   8.06,   8.49,  99.90,  -0.17,
07/20 09Z,   0.60,   5.86,   6.18,  99.90,  -0.28,
07/20 10Z,   0.60,   3.96,   4.20,  99.90,  -0.36,
07/20 11Z,   0.60,   2.85,   3.07,  99.90,  -0.38,
07/20 12Z,   0.60,   2.69,   2.92,  99.90,  -0.37,  (min)
07/20 13Z,   0.60,   3.36,   3.63,  99.90,  -0.33,
07/20 14Z,   0.60,   4.59,   4.79,  99.90,  -0.40,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/20 15Z,   0.60,   6.03,  99.90,   6.26,  -0.38,
07/20 16Z,   0.60,   7.28,  99.90,   7.52,  -0.35,
07/20 17Z,   0.60,   7.95,  99.90,   8.22,  -0.33,
07/20 18Z,   0.60,   7.93,  99.90,   8.22,  -0.31,  (max)
07/20 19Z,   0.60,   7.31,  99.90,   7.62,  -0.29,
07/20 20Z,   0.60,   6.26,  99.90,   6.60,  -0.26,
07/20 21Z,   0.60,   5.04,  99.90,   5.40,  -0.24,
07/20 22Z,   0.60,   4.04,  99.90,   4.42,  -0.22,
07/20 23Z,   0.60,   3.68,  99.90,   4.09,  -0.20,  (min)
07/21 00Z,   0.60,   4.17,  99.90,   4.59,  -0.17,
07/21 01Z,   0.60,   5.38,  99.90,   5.83,  -0.15,
07/21 02Z,   0.60,   7.05,  99.90,   7.52,  -0.13,
07/21 03Z,   0.60,   8.87,  99.90,   9.34,  -0.13,
07/21 04Z,   0.60,  10.45,  99.90,  10.92,  -0.13,
07/21 05Z,   0.60,  11.38,  99.90,  11.85,  -0.13,
07/21 06Z,   0.70,  11.42,  99.90,  11.99,  -0.13,  (max)
07/21 07Z,   0.70,  10.57,  99.90,  11.14,  -0.13,
07/21 08Z,   0.70,   9.00,  99.90,   9.57,  -0.13,
07/21 09Z,   0.70,   6.93,  99.90,   7.50,  -0.13,
07/21 10Z,   0.70,   4.74,  99.90,   5.32,  -0.13,
07/21 11Z,   0.70,   2.95,  99.90,   3.53,  -0.13,
07/21 12Z,   0.60,   1.97,  99.90,   2.44,  -0.13,  (min)
07/21 13Z,   0.70,   1.91,  99.90,   2.48,  -0.13,
07/21 14Z,   0.70,   2.62,  99.90,   3.20,  -0.13,
07/21 15Z,   0.70,   3.89,  99.90,   4.46,  -0.13,
07/21 16Z,   0.70,   5.39,  99.90,   5.96,  -0.13,
07/21 17Z,   0.70,   6.74,  99.90,   7.31,  -0.13,
07/21 18Z,   0.70,   7.60,  99.90,   8.17,  -0.13,
07/21 19Z,   0.70,   7.89,  99.90,   8.46,  -0.13,  (max)
07/21 20Z,   0.70,   7.69,  99.90,   8.26,  -0.13,
07/21 21Z,   0.60,   7.13,  99.90,   7.60,  -0.13,
07/21 22Z,   0.60,   6.38,  99.90,   6.85,  -0.13,
07/21 23Z,   0.60,   5.74,  99.90,   6.21,  -0.13,
07/22 00Z,   0.60,   5.55,  99.90,   6.02,  -0.13,  (min)
07/22 01Z,   0.70,   5.94,  99.90,   6.51,  -0.13,
07/22 02Z,   0.70,   6.83,  99.90,   7.40,  -0.13,
07/22 03Z,   0.70,   8.05,  99.90,   8.62,  -0.13,
07/22 04Z,   0.70,   9.38,  99.90,   9.96,  -0.13,
07/22 05Z,   0.70,  10.49,  99.90,  11.06,  -0.13,
07/22 06Z,   0.70,  11.01,  99.90,  11.58,  -0.13,  (max)
07/22 07Z,   0.70,  10.72,  99.90,  11.29,  -0.13,
07/22 08Z,   0.70,   9.65,  99.90,  10.22,  -0.13,
07/22 09Z,   0.70,   7.97,  99.90,   8.54,  -0.13,
07/22 10Z,   0.70,   5.88,  99.90,   6.46,  -0.13,
07/22 11Z,   0.70,   3.77,  99.90,   4.34,  -0.13,
07/22 12Z,   0.70,   2.10,  99.90,   2.67,  -0.13,
07/22 13Z,   0.70,   1.24,  99.90,   1.81,  -0.13,  (min)
07/22 14Z,   0.70,   1.26,  99.90,   1.83,  -0.13,
07/22 15Z,   0.70,   2.04,  99.90,   2.61,  -0.13,
07/22 16Z,   0.70,   3.38,  99.90,   3.95,  -0.13,
07/22 17Z,   0.70,   4.99,  99.90,   5.56,  -0.13,
07/22 18Z,   0.70,   6.49,  99.90,   7.06,  -0.13,
07/22 19Z,   0.70,   7.58,  99.90,   8.15,  -0.13,
07/22 20Z,   0.70,   8.19,  99.90,   8.76,  -0.13,
07/22 21Z,   0.70,   8.38,  99.90,   8.95,  -0.13,  (max)
07/22 22Z,   0.70,   8.21,  99.90,   8.78,  -0.13,
07/22 23Z,   0.70,   7.77,  99.90,   8.34,  -0.13,
07/23 00Z,   0.70,   7.30,  99.90,   7.87,  -0.13,
07/23 01Z,   0.70,   7.08,  99.90,   7.65,  -0.13,  (min)
07/23 02Z,   0.70,   7.23,  99.90,   7.80,  -0.13,
07/23 03Z,   0.70,   7.75,  99.90,   8.32,  -0.13,
07/23 04Z,   0.80,   8.55,  99.90,   9.22,  -0.13,
07/23 05Z,   0.80,   9.48,  99.90,  10.15,  -0.13,
07/23 06Z,   0.80,  10.23,  99.90,  10.90,  -0.13,
07/23 07Z,   0.80,  10.45,  99.90,  11.12,  -0.13,  (max)
07/23 08Z,   0.80,   9.96,  99.90,  10.63,  -0.13,
07/23 09Z,   0.80,   8.78,  99.90,   9.46,  -0.13,
07/23 10Z,   0.80,   7.06,  99.90,   7.73,  -0.13,
07/23 11Z,   0.80,   4.99,  99.90,   5.66,  -0.13,
07/23 12Z,   0.80,   2.94,  99.90,   3.61,  -0.13,
07/23 13Z,   0.80,   1.38,  99.90,   2.05,  -0.13,
07/23 14Z,   0.80,   0.62,  99.90,   1.29,  -0.13,  (min)
07/23 15Z,   0.80,   0.74,  99.90,   1.42,  -0.13,
07/23 16Z,   0.80,   1.64,  99.90,   2.31,  -0.13,
07/23 17Z,   0.80,   3.13,  99.90,   3.80,  -0.13,
07/23 18Z,   0.80,   4.90,  99.90,   5.57,  -0.13,
07/23 19Z,   0.80,   6.57,  99.90,   7.25,  -0.13,
07/23 20Z,   0.90,   7.88,  99.90,   8.65,  -0.13,
07/23 21Z,   0.90,   8.76,  99.90,   9.53,  -0.13,
07/23 22Z,   0.90,   9.23,  99.90,  10.01,  -0.13,
07/23 23Z,   0.90,   9.29,  99.90,  10.06,  -0.13,  (max)
07/24 00Z,   0.90,   8.96,  99.90,   9.73,  -0.13,
07/24 01Z,   0.90,   8.47,  99.90,   9.24,  -0.13,
07/24 02Z,   0.90,   8.08,  99.90,   8.85,  -0.13,
07/24 03Z,   0.90,   7.95,  99.90,   8.72,  -0.13,  (min)
07/24 04Z,   0.90,   8.13,  99.90,   8.90,  -0.13,
07/24 05Z,   1.00,   8.63,  99.90,   9.50,  -0.13,
07/24 06Z,   1.00,   9.30,  99.90,  10.18,  -0.13,