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
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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 : 04/16/2026 16:21:09 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/15 00Z,   0.90,   8.40,   9.08,  99.90,  -0.22,  (max)
04/15 01Z,   0.90,   7.08,   7.89,  99.90,  -0.09,
04/15 02Z,   0.90,   5.36,   6.22,  99.90,  -0.04,
04/15 03Z,   0.90,   3.65,   4.56,  99.90,   0.01,
04/15 04Z,   0.90,   2.51,   3.39,  99.90,  -0.02,
04/15 05Z,   0.90,   2.37,   3.13,  99.90,  -0.14,  (min)
04/15 06Z,   0.90,   3.29,   4.01,  99.90,  -0.18,
04/15 07Z,   0.90,   5.01,   5.67,  99.90,  -0.24,
04/15 08Z,   1.00,   7.13,   7.75,  99.90,  -0.38,
04/15 09Z,   1.00,   9.18,   9.95,  99.90,  -0.23,
04/15 10Z,   1.00,  10.64,  11.50,  99.90,  -0.14,
04/15 11Z,   1.00,  11.16,  12.05,  99.90,  -0.11,  (max)
04/15 12Z,   1.00,  10.67,  11.61,  99.90,  -0.06,
04/15 13Z,   1.00,   9.32,  10.42,  99.90,   0.10,
04/15 14Z,   1.00,   7.34,   8.57,  99.90,   0.23,
04/15 15Z,   1.00,   5.10,   6.25,  99.90,   0.15,
04/15 16Z,   1.00,   3.18,   4.20,  99.90,   0.02,
04/15 17Z,   1.00,   2.12,   3.06,  99.90,  -0.06,  (min)
04/15 18Z,   1.00,   2.20,   3.08,  99.90,  -0.12,
04/15 19Z,   1.00,   3.29,   4.20,  99.90,  -0.09,
04/15 20Z,   1.00,   5.06,   5.83,  99.90,  -0.23,
04/15 21Z,   1.00,   7.06,   7.80,  99.90,  -0.26,
04/15 22Z,   1.00,   8.77,   9.60,  99.90,  -0.17,
04/15 23Z,   1.00,   9.75,  10.53,  99.90,  -0.22,
04/16 00Z,   1.00,   9.80,  10.55,  99.90,  -0.25,  (max)
04/16 01Z,   1.00,   8.99,   9.68,  99.90,  -0.31,
04/16 02Z,   1.00,   7.52,   8.32,  99.90,  -0.20,
04/16 03Z,   1.00,   5.71,   6.45,  99.90,  -0.26,
04/16 04Z,   1.00,   4.04,   4.58,  99.90,  -0.46,
04/16 05Z,   1.00,   3.10,   3.50,  99.90,  -0.60,  (min)
04/16 06Z,   0.90,   3.24,   3.56,  99.90,  -0.58,
04/16 07Z,   0.80,   4.45,   4.74,  99.90,  -0.51,
04/16 08Z,   0.80,   6.35,   6.55,  99.90,  -0.60,
04/16 09Z,   0.80,   8.49,   8.77,  99.90,  -0.52,
04/16 10Z,   0.70,  10.31,  10.70,  99.90,  -0.31,
04/16 11Z,   0.70,  11.32,  11.79,  99.90,  -0.23,  (max)
04/16 12Z,   0.70,  11.23,  11.70,  99.90,  -0.23,
04/16 13Z,   0.70,  10.06,  10.58,  99.90,  -0.18,
04/16 14Z,   0.60,   8.04,   8.75,  99.90,   0.11,
04/16 15Z,   0.60,   5.51,   6.18,  99.90,   0.07,
04/16 16Z,   0.60,   2.98,   3.50,  99.90,  -0.08,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/16 17Z,   0.60,   1.10,  99.90,   1.62,  -0.09,
04/16 18Z,   0.50,   0.44,  99.90,   0.85,  -0.09,  (min)
04/16 19Z,   0.50,   1.14,  99.90,   1.54,  -0.10,
04/16 20Z,   0.50,   2.92,  99.90,   3.31,  -0.11,
04/16 21Z,   0.50,   5.29,  99.90,   5.68,  -0.12,
04/16 22Z,   0.50,   7.70,  99.90,   8.07,  -0.12,
04/16 23Z,   0.40,   9.57,  99.90,   9.84,  -0.13,
04/17 00Z,   0.40,  10.53,  99.90,  10.79,  -0.14,  (max)
04/17 01Z,   0.40,  10.45,  99.90,  10.71,  -0.15,
04/17 02Z,   0.40,   9.51,  99.90,   9.76,  -0.15,
04/17 03Z,   0.40,   7.96,  99.90,   8.20,  -0.16,
04/17 04Z,   0.40,   6.15,  99.90,   6.38,  -0.17,
04/17 05Z,   0.40,   4.61,  99.90,   4.85,  -0.17,
04/17 06Z,   0.40,   3.93,  99.90,   4.16,  -0.17,  (min)
04/17 07Z,   0.40,   4.38,  99.90,   4.61,  -0.17,
04/17 08Z,   0.40,   5.80,  99.90,   6.03,  -0.17,
04/17 09Z,   0.40,   7.77,  99.90,   8.00,  -0.17,
04/17 10Z,   0.40,   9.74,  99.90,   9.97,  -0.17,
04/17 11Z,   0.40,  11.18,  99.90,  11.41,  -0.17,
04/17 12Z,   0.40,  11.62,  99.90,  11.85,  -0.17,  (max)
04/17 13Z,   0.40,  10.86,  99.90,  11.09,  -0.17,
04/17 14Z,   0.40,   9.02,  99.90,   9.26,  -0.17,
04/17 15Z,   0.40,   6.43,  99.90,   6.66,  -0.17,
04/17 16Z,   0.40,   3.52,  99.90,   3.75,  -0.17,
04/17 17Z,   0.40,   0.89,  99.90,   1.12,  -0.17,
04/17 18Z,   0.40,  -0.73,  99.90,  -0.50,  -0.17,
04/17 19Z,   0.40,  -0.86,  99.90,  -0.63,  -0.17,  (min)
04/17 20Z,   0.40,   0.50,  99.90,   0.73,  -0.17,
04/17 21Z,   0.40,   2.90,  99.90,   3.14,  -0.17,
04/17 22Z,   0.40,   5.74,  99.90,   5.97,  -0.17,
04/17 23Z,   0.40,   8.39,  99.90,   8.62,  -0.17,
04/18 00Z,   0.40,  10.31,  99.90,  10.54,  -0.17,
04/18 01Z,   0.40,  11.17,  99.90,  11.40,  -0.17,  (max)
04/18 02Z,   0.40,  10.98,  99.90,  11.21,  -0.17,
04/18 03Z,   0.40,   9.95,  99.90,  10.18,  -0.17,
04/18 04Z,   0.40,   8.38,  99.90,   8.61,  -0.17,
04/18 05Z,   0.40,   6.65,  99.90,   6.88,  -0.17,
04/18 06Z,   0.40,   5.33,  99.90,   5.56,  -0.17,
04/18 07Z,   0.50,   4.92,  99.90,   5.26,  -0.17,  (min)
04/18 08Z,   0.50,   5.62,  99.90,   5.95,  -0.17,
04/18 09Z,   0.50,   7.14,  99.90,   7.47,  -0.17,
04/18 10Z,   0.50,   9.01,  99.90,   9.34,  -0.17,
04/18 11Z,   0.50,  10.67,  99.90,  11.00,  -0.17,
04/18 12Z,   0.50,  11.63,  99.90,  11.96,  -0.17,  (max)
04/18 13Z,   0.50,  11.48,  99.90,  11.81,  -0.17,
04/18 14Z,   0.50,  10.12,  99.90,  10.45,  -0.17,
04/18 15Z,   0.50,   7.75,  99.90,   8.08,  -0.17,
04/18 16Z,   0.50,   4.76,  99.90,   5.09,  -0.17,
04/18 17Z,   0.50,   1.67,  99.90,   2.00,  -0.17,
04/18 18Z,   0.50,  -0.85,  99.90,  -0.52,  -0.17,
04/18 19Z,   0.60,  -2.08,  99.90,  -1.65,  -0.17,  (min)
04/18 20Z,   0.60,  -1.65,  99.90,  -1.22,  -0.17,
04/18 21Z,   0.60,   0.29,  99.90,   0.72,  -0.17,
04/18 22Z,   0.60,   3.16,  99.90,   3.59,  -0.17,
04/18 23Z,   0.60,   6.28,  99.90,   6.71,  -0.17,
04/19 00Z,   0.60,   9.00,  99.90,   9.44,  -0.17,
04/19 01Z,   0.60,  10.86,  99.90,  11.29,  -0.17,
04/19 02Z,   0.60,  11.60,  99.90,  12.03,  -0.17,  (max)
04/19 03Z,   0.60,  11.32,  99.90,  11.75,  -0.17,
04/19 04Z,   0.70,  10.27,  99.90,  10.80,  -0.17,
04/19 05Z,   0.70,   8.75,  99.90,   9.29,  -0.17,
04/19 06Z,   0.70,   7.19,  99.90,   7.72,  -0.17,
04/19 07Z,   0.70,   6.10,  99.90,   6.63,  -0.17,
04/19 08Z,   0.70,   5.94,  99.90,   6.47,  -0.17,  (min)
04/19 09Z,   0.70,   6.77,  99.90,   7.30,  -0.17,
04/19 10Z,   0.70,   8.25,  99.90,   8.78,  -0.17,
04/19 11Z,   0.70,   9.88,  99.90,  10.41,  -0.17,
04/19 12Z,   0.70,  11.16,  99.90,  11.70,  -0.17,
04/19 13Z,   0.70,  11.64,  99.90,  12.17,  -0.17,  (max)
04/19 14Z,   0.70,  10.98,  99.90,  11.51,  -0.17,
04/19 15Z,   0.70,   9.17,  99.90,   9.70,  -0.17,
04/19 16Z,   0.70,   6.47,  99.90,   7.00,  -0.17,
04/19 17Z,   0.70,   3.31,  99.90,   3.84,  -0.17,
04/19 18Z,   0.80,   0.25,  99.90,   0.88,  -0.17,
04/19 19Z,   0.80,  -2.01,  99.90,  -1.38,  -0.17,
04/19 20Z,   0.80,  -2.81,  99.90,  -2.18,  -0.17,  (min)
04/19 21Z,   0.70,  -1.88,  99.90,  -1.35,  -0.17,
04/19 22Z,   0.70,   0.46,  99.90,   0.99,  -0.17,
04/19 23Z,   0.70,   3.56,  99.90,   4.09,  -0.17,
04/20 00Z,   0.70,   6.74,  99.90,   7.27,  -0.17,
04/20 01Z,   0.70,   9.40,  99.90,   9.93,  -0.17,
04/20 02Z,   0.70,  11.12,  99.90,  11.65,  -0.17,
04/20 03Z,   0.70,  11.75,  99.90,  12.29,  -0.17,  (max)
04/20 04Z,   0.70,  11.44,  99.90,  11.97,  -0.17,
04/20 05Z,   0.80,  10.44,  99.90,  11.08,  -0.17,
04/20 06Z,   0.80,   9.07,  99.90,   9.70,  -0.17,
04/20 07Z,  99.90,   7.69,  99.90,  99.90,  -0.17,
04/20 08Z,  99.90,   6.83,  99.90,  99.90,  -0.17,
04/20 09Z,  99.90,   6.82,  99.90,  99.90,  -0.17,
04/20 10Z,  99.90,   7.66,  99.90,  99.90,  -0.17,
04/20 11Z,  99.90,   8.97,  99.90,  99.90,  -0.17,
04/20 12Z,  99.90,  10.29,  99.90,  99.90,  -0.17,