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 : 04/12/2026 03:21:10 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/10 12Z,   0.60,   8.24,   8.91,  99.90,   0.07,
04/10 13Z,   0.60,   7.81,   8.38,  99.90,  -0.03,
04/10 14Z,   0.60,   7.59,   8.16,  99.90,  -0.03,
04/10 15Z,   0.60,   7.53,   8.14,  99.90,   0.01,  (min)
04/10 16Z,   0.60,   7.61,   8.24,  99.90,   0.03,
04/10 17Z,   0.70,   7.78,   8.27,  99.90,  -0.21,  (max)
04/10 18Z,   0.70,   7.83,   8.15,  99.90,  -0.38,
04/10 19Z,   0.70,   7.49,   7.74,  99.90,  -0.45,
04/10 20Z,   0.70,   6.67,   6.89,  99.90,  -0.48,
04/10 21Z,   0.80,   5.45,   5.74,  99.90,  -0.51,
04/10 22Z,   0.80,   4.01,   4.45,  99.90,  -0.36,
04/10 23Z,   0.80,   2.59,   3.23,  99.90,  -0.16,
04/11 00Z,   0.60,   1.54,   2.46,  99.90,   0.32,
04/11 01Z,   0.60,   1.21,   2.25,  99.90,   0.44,  (min)
04/11 02Z,   0.70,   1.71,   2.77,  99.90,   0.36,
04/11 03Z,   0.70,   2.88,   3.83,  99.90,   0.25,
04/11 04Z,   0.70,   4.46,   5.40,  99.90,   0.24,
04/11 05Z,   0.70,   6.22,   7.23,  99.90,   0.31,
04/11 06Z,   0.70,   7.88,   8.92,  99.90,   0.34,
04/11 07Z,   0.70,   9.15,  10.23,  99.90,   0.38,
04/11 08Z,   0.70,   9.89,  11.05,  99.90,   0.46,
04/11 09Z,   0.70,  10.12,  11.29,  99.90,   0.47,  (max)
04/11 10Z,   0.70,   9.95,  11.12,  99.90,   0.47,
04/11 11Z,   0.80,   9.42,  10.59,  99.90,   0.37,
04/11 12Z,   1.00,   8.64,   9.75,  99.90,   0.11,
04/11 13Z,   1.00,   7.84,   8.84,  99.90,  -0.00,
04/11 14Z,   1.00,   7.24,   8.11,  99.90,  -0.13,
04/11 15Z,   1.00,   6.91,   7.74,  99.90,  -0.17,
04/11 16Z,   1.00,   6.85,   7.70,  99.90,  -0.15,  (min)
04/11 17Z,   1.00,   7.06,   7.86,  99.90,  -0.20,
04/11 18Z,   1.10,   7.43,   8.04,  99.90,  -0.49,
04/11 19Z,   1.10,   7.68,   8.11,  99.90,  -0.67,  (max)
04/11 20Z,   1.10,   7.53,   7.94,  99.90,  -0.69,
04/11 21Z,   1.10,   6.87,   7.34,  99.90,  -0.63,
04/11 22Z,   1.10,   5.76,   6.30,  99.90,  -0.56,
04/11 23Z,   1.10,   4.36,   5.08,  99.90,  -0.38,
04/12 00Z,   1.10,   2.91,   3.77,  99.90,  -0.24,
04/12 01Z,   1.10,   1.81,   2.76,  99.90,  -0.15,
04/12 02Z,   1.00,   1.41,   2.36,  99.90,  -0.05,  (min)
04/12 03Z,   1.00,   1.84,   2.73,  99.90,  -0.11,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/12 04Z,   1.00,   2.98,  99.90,   3.87,  -0.11,
04/12 05Z,   1.00,   4.60,  99.90,   5.50,  -0.10,
04/12 06Z,   1.00,   6.45,  99.90,   7.35,  -0.10,
04/12 07Z,   1.00,   8.19,  99.90,   9.10,  -0.09,
04/12 08Z,   1.00,   9.50,  99.90,  10.41,  -0.09,
04/12 09Z,   1.00,  10.20,  99.90,  11.12,  -0.09,
04/12 10Z,   1.00,  10.33,  99.90,  11.25,  -0.08,  (max)
04/12 11Z,   1.00,   9.94,  99.90,  10.87,  -0.08,
04/12 12Z,   1.00,   9.11,  99.90,  10.04,  -0.07,
04/12 13Z,   1.00,   8.02,  99.90,   8.95,  -0.07,
04/12 14Z,   1.00,   6.98,  99.90,   7.91,  -0.07,
04/12 15Z,   1.10,   6.26,  99.90,   7.30,  -0.06,
04/12 16Z,   1.10,   5.98,  99.90,   7.02,  -0.06,  (min)
04/12 17Z,   1.10,   6.13,  99.90,   7.17,  -0.06,
04/12 18Z,   1.10,   6.65,  99.90,   7.69,  -0.06,
04/12 19Z,   1.10,   7.34,  99.90,   8.38,  -0.06,
04/12 20Z,   1.10,   7.85,  99.90,   8.89,  -0.06,
04/12 21Z,   1.10,   7.86,  99.90,   8.90,  -0.06,  (max)
04/12 22Z,   1.10,   7.28,  99.90,   8.32,  -0.06,
04/12 23Z,   1.10,   6.17,  99.90,   7.21,  -0.06,
04/13 00Z,   1.10,   4.71,  99.90,   5.75,  -0.06,
04/13 01Z,   1.10,   3.17,  99.90,   4.21,  -0.06,
04/13 02Z,   1.10,   1.98,  99.90,   3.02,  -0.06,
04/13 03Z,   1.10,   1.56,  99.90,   2.59,  -0.06,  (min)
04/13 04Z,   1.10,   2.03,  99.90,   3.07,  -0.06,
04/13 05Z,   1.10,   3.28,  99.90,   4.32,  -0.06,
04/13 06Z,   1.10,   5.06,  99.90,   6.10,  -0.06,
04/13 07Z,   1.10,   7.04,  99.90,   8.08,  -0.06,
04/13 08Z,   1.10,   8.84,  99.90,   9.88,  -0.06,
04/13 09Z,   1.10,  10.08,  99.90,  11.12,  -0.06,
04/13 10Z,   1.10,  10.59,  99.90,  11.63,  -0.06,  (max)
04/13 11Z,   1.10,  10.40,  99.90,  11.43,  -0.06,
04/13 12Z,   1.10,   9.60,  99.90,  10.64,  -0.06,
04/13 13Z,   1.10,   8.32,  99.90,   9.36,  -0.06,
04/13 14Z,   1.00,   6.86,  99.90,   7.80,  -0.06,
04/13 15Z,   1.00,   5.64,  99.90,   6.57,  -0.06,
04/13 16Z,   1.00,   4.97,  99.90,   5.91,  -0.06,
04/13 17Z,   1.00,   4.95,  99.90,   5.89,  -0.06,  (min)
04/13 18Z,   1.00,   5.52,  99.90,   6.45,  -0.06,
04/13 19Z,   0.90,   6.49,  99.90,   7.33,  -0.06,
04/13 20Z,   0.90,   7.56,  99.90,   8.39,  -0.06,
04/13 21Z,   0.90,   8.30,  99.90,   9.14,  -0.06,
04/13 22Z,   0.90,   8.41,  99.90,   9.24,  -0.06,  (max)
04/13 23Z,   0.90,   7.82,  99.90,   8.65,  -0.06,
04/14 00Z,   0.90,   6.63,  99.90,   7.47,  -0.06,
04/14 01Z,   0.90,   5.04,  99.90,   5.88,  -0.06,
04/14 02Z,   0.90,   3.38,  99.90,   4.22,  -0.06,
04/14 03Z,   0.90,   2.17,  99.90,   3.01,  -0.06,
04/14 04Z,   0.90,   1.83,  99.90,   2.67,  -0.06,  (min)
04/14 05Z,   0.90,   2.48,  99.90,   3.32,  -0.06,
04/14 06Z,   0.90,   3.95,  99.90,   4.78,  -0.06,
04/14 07Z,   0.90,   5.92,  99.90,   6.76,  -0.06,
04/14 08Z,   0.90,   8.01,  99.90,   8.85,  -0.06,
04/14 09Z,   0.80,   9.73,  99.90,  10.47,  -0.06,
04/14 10Z,   0.80,  10.71,  99.90,  11.45,  -0.06,
04/14 11Z,   0.80,  10.81,  99.90,  11.55,  -0.06,  (max)
04/14 12Z,   0.80,  10.11,  99.90,  10.85,  -0.06,
04/14 13Z,   0.80,   8.74,  99.90,   9.48,  -0.06,
04/14 14Z,   0.80,   6.96,  99.90,   7.70,  -0.06,
04/14 15Z,   0.80,   5.19,  99.90,   5.93,  -0.06,
04/14 16Z,   0.80,   3.94,  99.90,   4.68,  -0.06,
04/14 17Z,   0.80,   3.54,  99.90,   4.28,  -0.06,  (min)
04/14 18Z,   0.80,   4.00,  99.90,   4.74,  -0.06,
04/14 19Z,   0.90,   5.13,  99.90,   5.97,  -0.06,
04/14 20Z,   0.90,   6.63,  99.90,   7.47,  -0.06,
04/14 21Z,   0.90,   8.06,  99.90,   8.90,  -0.06,
04/14 22Z,   0.90,   8.97,  99.90,   9.81,  -0.06,
04/14 23Z,   0.90,   9.08,  99.90,   9.92,  -0.06,  (max)
04/15 00Z,   0.90,   8.40,  99.90,   9.24,  -0.06,
04/15 01Z,   0.90,   7.08,  99.90,   7.92,  -0.06,
04/15 02Z,   1.00,   5.36,  99.90,   6.29,  -0.06,
04/15 03Z,   1.00,   3.65,  99.90,   4.59,  -0.06,
04/15 04Z,   1.00,   2.51,  99.90,   3.45,  -0.06,
04/15 05Z,   1.10,   2.37,  99.90,   3.41,  -0.06,  (min)
04/15 06Z,   1.10,   3.29,  99.90,   4.33,  -0.06,
04/15 07Z,   1.20,   5.01,  99.90,   6.15,  -0.06,
04/15 08Z,   1.20,   7.13,  99.90,   8.27,  -0.06,
04/15 09Z,   1.30,   9.18,  99.90,  10.42,  -0.06,
04/15 10Z,   1.30,  10.64,  99.90,  11.88,  -0.06,
04/15 11Z,   1.30,  11.16,  99.90,  12.40,  -0.06,  (max)
04/15 12Z,   1.20,  10.67,  99.90,  11.81,  -0.06,
04/15 13Z,   1.20,   9.32,  99.90,  10.46,  -0.06,
04/15 14Z,   1.20,   7.34,  99.90,   8.48,  -0.06,
04/15 15Z,   1.20,   5.10,  99.90,   6.24,  -0.06,
04/15 16Z,   1.10,   3.18,  99.90,   4.22,  -0.06,
04/15 17Z,   1.10,   2.12,  99.90,   3.16,  -0.06,  (min)
04/15 18Z,   1.10,   2.20,  99.90,   3.24,  -0.06,
04/15 19Z,  99.90,   3.29,  99.90,  99.90,  -0.06,
04/15 20Z,  99.90,   5.06,  99.90,  99.90,  -0.06,
04/15 21Z,  99.90,   7.06,  99.90,  99.90,  -0.06,
04/15 22Z,  99.90,   8.77,  99.90,  99.90,  -0.06,
04/15 23Z,  99.90,   9.75,  99.90,  99.90,  -0.06,
04/16 00Z,  99.90,   9.80,  99.90,  99.90,  -0.06,