EXTRA-TROPICAL  STORM  SURGE
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Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
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Alaska
Gulf of Alaska
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Cherry Point, WA
Friday Harbor WA
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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 : 05/15/2026 13:21:38 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/13 18Z,   0.70,   2.95,   3.44,  99.90,  -0.21,
05/13 19Z,   0.70,   4.66,   5.05,  99.90,  -0.31,
05/13 20Z,   0.70,   6.51,   6.94,  99.90,  -0.27,
05/13 21Z,   0.70,   8.03,   8.48,  99.90,  -0.25,
05/13 22Z,   0.70,   8.86,   9.28,  99.90,  -0.28,  (max)
05/13 23Z,   0.70,   8.93,   9.23,  99.90,  -0.40,
05/14 00Z,   0.70,   8.33,   8.62,  99.90,  -0.41,
05/14 01Z,   0.70,   7.27,   7.61,  99.90,  -0.36,
05/14 02Z,   0.70,   6.00,   6.28,  99.90,  -0.42,
05/14 03Z,   0.70,   4.94,   5.14,  99.90,  -0.50,
05/14 04Z,   0.70,   4.56,   4.64,  99.90,  -0.62,  (min)
05/14 05Z,   0.70,   5.06,   5.03,  99.90,  -0.73,
05/14 06Z,   0.60,   6.32,   6.25,  99.90,  -0.67,
05/14 07Z,   0.50,   8.01,   7.86,  99.90,  -0.65,
05/14 08Z,   0.50,   9.73,   9.55,  99.90,  -0.68,
05/14 09Z,   0.50,  11.00,  10.97,  99.90,  -0.53,
05/14 10Z,   0.50,  11.40,  11.46,  99.90,  -0.44,  (max)
05/14 11Z,   0.50,  10.74,  10.89,  99.90,  -0.35,
05/14 12Z,   0.30,   9.14,   9.54,  99.90,   0.10,
05/14 13Z,   0.30,   6.85,   7.39,  99.90,   0.24,
05/14 14Z,   0.30,   4.23,   4.72,  99.90,   0.19,
05/14 15Z,   0.30,   1.80,   2.19,  99.90,   0.09,
05/14 16Z,   0.30,   0.16,   0.52,  99.90,   0.06,
05/14 17Z,   0.30,  -0.23,   0.14,  99.90,   0.07,  (min)
05/14 18Z,   0.30,   0.65,   1.05,  99.90,   0.10,
05/14 19Z,   0.30,   2.48,   2.78,  99.90,  -0.00,
05/14 20Z,   0.30,   4.81,   5.05,  99.90,  -0.06,
05/14 21Z,   0.30,   7.13,   7.36,  99.90,  -0.07,
05/14 22Z,   0.30,   8.92,   9.13,  99.90,  -0.09,
05/14 23Z,   0.40,   9.87,   9.95,  99.90,  -0.32,  (max)
05/15 00Z,   0.40,   9.95,   9.94,  99.90,  -0.41,
05/15 01Z,   0.40,   9.33,   9.30,  99.90,  -0.43,
05/15 02Z,   0.40,   8.20,   8.28,  99.90,  -0.32,
05/15 03Z,   0.40,   6.87,   6.98,  99.90,  -0.29,
05/15 04Z,   0.40,   5.82,   5.89,  99.90,  -0.33,
05/15 05Z,   0.40,   5.50,   5.53,  99.90,  -0.37,  (min)
05/15 06Z,   0.40,   6.10,   6.11,  99.90,  -0.39,
05/15 07Z,   0.40,   7.41,   7.47,  99.90,  -0.34,
05/15 08Z,   0.40,   9.06,   9.06,  99.90,  -0.40,
05/15 09Z,   0.40,  10.58,  10.66,  99.90,  -0.32,
05/15 10Z,   0.40,  11.49,  11.71,  99.90,  -0.18,  (max)
05/15 11Z,   0.50,  11.39,  11.67,  99.90,  -0.22,
05/15 12Z,   0.50,  10.16,  10.56,  99.90,  -0.10,
05/15 13Z,   0.50,   7.98,   8.56,  99.90,   0.08,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/15 14Z,   0.50,   5.20,  99.90,   5.76,   0.06,
05/15 15Z,   0.50,   2.24,  99.90,   2.79,   0.05,
05/15 16Z,   0.50,  -0.28,  99.90,   0.26,   0.03,
05/15 17Z,   0.50,  -1.67,  99.90,  -1.15,   0.02,  (min)
05/15 18Z,   0.50,  -1.57,  99.90,  -1.06,   0.01,
05/15 19Z,   0.50,  -0.05,  99.90,   0.44,  -0.01,
05/15 20Z,   0.50,   2.43,  99.90,   2.91,  -0.02,
05/15 21Z,   0.50,   5.29,  99.90,   5.75,  -0.04,
05/15 22Z,   0.50,   7.94,  99.90,   8.39,  -0.05,
05/15 23Z,   0.50,   9.87,  99.90,  10.31,  -0.06,
05/16 00Z,   0.50,  10.83,  99.90,  11.26,  -0.08,
05/16 01Z,   0.50,  10.87,  99.90,  11.28,  -0.09,  (max)
05/16 02Z,   0.50,  10.17,  99.90,  10.58,  -0.09,
05/16 03Z,   0.50,   8.96,  99.90,   9.37,  -0.09,
05/16 04Z,   0.50,   7.60,  99.90,   8.01,  -0.09,
05/16 05Z,   0.50,   6.58,  99.90,   6.99,  -0.09,
05/16 06Z,   0.50,   6.37,  99.90,   6.78,  -0.09,  (min)
05/16 07Z,   0.50,   7.05,  99.90,   7.46,  -0.09,
05/16 08Z,   0.50,   8.38,  99.90,   8.79,  -0.09,
05/16 09Z,   0.50,   9.92,  99.90,  10.33,  -0.09,
05/16 10Z,   0.50,  11.19,  99.90,  11.60,  -0.09,
05/16 11Z,   0.50,  11.69,  99.90,  12.09,  -0.09,  (max)
05/16 12Z,   0.50,  11.08,  99.90,  11.49,  -0.09,
05/16 13Z,   0.50,   9.33,  99.90,   9.74,  -0.09,
05/16 14Z,   0.50,   6.69,  99.90,   7.10,  -0.09,
05/16 15Z,   0.50,   3.55,  99.90,   3.95,  -0.09,
05/16 16Z,   0.50,   0.42,  99.90,   0.82,  -0.09,
05/16 17Z,   0.50,  -2.00,  99.90,  -1.59,  -0.09,
05/16 18Z,   0.50,  -3.03,  99.90,  -2.62,  -0.09,  (min)
05/16 19Z,   0.50,  -2.37,  99.90,  -1.96,  -0.09,
05/16 20Z,   0.50,  -0.26,  99.90,   0.15,  -0.09,
05/16 21Z,   0.50,   2.73,  99.90,   3.13,  -0.09,
05/16 22Z,   0.50,   5.94,  99.90,   6.35,  -0.09,
05/16 23Z,   0.50,   8.75,  99.90,   9.16,  -0.09,
05/17 00Z,   0.50,  10.69,  99.90,  11.10,  -0.09,
05/17 01Z,   0.50,  11.59,  99.90,  12.00,  -0.09,
05/17 02Z,   0.60,  11.54,  99.90,  12.05,  -0.09,  (max)
05/17 03Z,   0.60,  10.76,  99.90,  11.26,  -0.09,
05/17 04Z,   0.60,   9.49,  99.90,  10.00,  -0.09,
05/17 05Z,   0.60,   8.12,  99.90,   8.63,  -0.09,
05/17 06Z,   0.60,   7.18,  99.90,   7.69,  -0.09,
05/17 07Z,   0.60,   7.07,  99.90,   7.58,  -0.09,  (min)
05/17 08Z,   0.60,   7.82,  99.90,   8.33,  -0.09,
05/17 09Z,   0.60,   9.11,  99.90,   9.62,  -0.09,
05/17 10Z,   0.50,  10.48,  99.90,  10.89,  -0.09,
05/17 11Z,   0.50,  11.46,  99.90,  11.87,  -0.09,
05/17 12Z,   0.50,  11.57,  99.90,  11.98,  -0.09,  (max)
05/17 13Z,   0.50,  10.54,  99.90,  10.95,  -0.09,
05/17 14Z,   0.40,   8.41,  99.90,   8.72,  -0.09,
05/17 15Z,   0.40,   5.47,  99.90,   5.77,  -0.09,
05/17 16Z,   0.40,   2.14,  99.90,   2.45,  -0.09,
05/17 17Z,   0.40,  -0.99,  99.90,  -0.68,  -0.09,
05/17 18Z,   0.40,  -3.18,  99.90,  -2.87,  -0.09,
05/17 19Z,   0.30,  -3.78,  99.90,  -3.57,  -0.09,  (min)
05/17 20Z,   0.30,  -2.62,  99.90,  -2.41,  -0.09,
05/17 21Z,   0.30,  -0.06,  99.90,   0.14,  -0.09,
05/17 22Z,   0.30,   3.24,  99.90,   3.45,  -0.09,
05/17 23Z,   0.30,   6.60,  99.90,   6.81,  -0.09,
05/18 00Z,   0.30,   9.42,  99.90,   9.63,  -0.09,
05/18 01Z,   0.30,  11.27,  99.90,  11.48,  -0.09,
05/18 02Z,   0.30,  12.05,  99.90,  12.26,  -0.09,  (max)
05/18 03Z,   0.20,  11.91,  99.90,  12.02,  -0.09,
05/18 04Z,   0.20,  11.07,  99.90,  11.17,  -0.09,
05/18 05Z,   0.30,   9.77,  99.90,   9.98,  -0.09,
05/18 06Z,   0.30,   8.43,  99.90,   8.64,  -0.09,
05/18 07Z,   0.30,   7.58,  99.90,   7.79,  -0.09,
05/18 08Z,   0.30,   7.55,  99.90,   7.76,  -0.09,  (min)
05/18 09Z,   0.30,   8.31,  99.90,   8.52,  -0.09,
05/18 10Z,   0.30,   9.50,  99.90,   9.71,  -0.09,
05/18 11Z,   0.30,  10.68,  99.90,  10.89,  -0.09,
05/18 12Z,   0.30,  11.39,  99.90,  11.60,  -0.09,  (max)
05/18 13Z,   0.30,  11.20,  99.90,  11.40,  -0.09,
05/18 14Z,   0.30,   9.89,  99.90,  10.10,  -0.09,
05/18 15Z,   0.30,   7.54,  99.90,   7.75,  -0.09,
05/18 16Z,   0.30,   4.48,  99.90,   4.69,  -0.09,
05/18 17Z,   0.30,   1.15,  99.90,   1.36,  -0.09,
05/18 18Z,   0.30,  -1.83,  99.90,  -1.62,  -0.09,
05/18 19Z,   0.30,  -3.71,  99.90,  -3.50,  -0.09,
05/18 20Z,   0.30,  -3.91,  99.90,  -3.70,  -0.09,  (min)
05/18 21Z,   0.30,  -2.38,  99.90,  -2.17,  -0.09,
05/18 22Z,   0.30,   0.43,  99.90,   0.64,  -0.09,
05/18 23Z,   0.30,   3.83,  99.90,   4.04,  -0.09,
05/19 00Z,   0.40,   7.16,  99.90,   7.47,  -0.09,
05/19 01Z,   0.40,   9.86,  99.90,  10.17,  -0.09,
05/19 02Z,   0.40,  11.56,  99.90,  11.87,  -0.09,
05/19 03Z,   0.40,  12.23,  99.90,  12.54,  -0.09,  (max)
05/19 04Z,   0.40,  12.01,  99.90,  12.32,  -0.09,
05/19 05Z,   0.40,  11.13,  99.90,  11.44,  -0.09,
05/19 06Z,   0.40,   9.82,  99.90,  10.13,  -0.09,