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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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
#San Francisco, CA : 04/19/2026 01:21:58 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/17 06Z,   0.30,   5.93,   6.15,  99.90,  -0.08,
04/17 07Z,   0.20,   6.02,   6.23,  99.90,   0.01,  (max)
04/17 08Z,   0.20,   5.40,   5.58,  99.90,  -0.02,
04/17 09Z,   0.30,   4.10,   4.16,  99.90,  -0.24,
04/17 10Z,   0.30,   2.43,   2.44,  99.90,  -0.29,
04/17 11Z,   0.20,   0.82,   0.99,  99.90,  -0.03,
04/17 12Z,   0.20,  -0.29,   0.00,  99.90,   0.09,
04/17 13Z,   0.20,  -0.68,  -0.23,  99.90,   0.25,  (min)
04/17 14Z,   0.20,  -0.35,   0.02,  99.90,   0.17,
04/17 15Z,   0.10,   0.51,   0.87,  99.90,   0.26,
04/17 16Z,   0.10,   1.66,   1.88,  99.90,   0.12,
04/17 17Z,   0.10,   2.89,   3.04,  99.90,   0.05,
04/17 18Z,   0.20,   3.97,   4.14,  99.90,  -0.03,
04/17 19Z,   0.10,   4.71,   4.87,  99.90,   0.06,
04/17 20Z,   0.20,   4.90,   5.07,  99.90,  -0.03,  (max)
04/17 21Z,   0.20,   4.48,   4.65,  99.90,  -0.03,
04/17 22Z,   0.20,   3.59,   3.94,  99.90,   0.15,
04/17 23Z,   0.20,   2.56,   2.83,  99.90,   0.07,
04/18 00Z,   0.30,   1.79,   2.08,  99.90,  -0.01,
04/18 01Z,   0.40,   1.56,   1.94,  99.90,  -0.02,  (min)
04/18 02Z,   0.40,   1.94,   2.35,  99.90,   0.01,
04/18 03Z,   0.40,   2.79,   3.29,  99.90,   0.10,
04/18 04Z,   0.30,   3.89,   4.33,  99.90,   0.14,
04/18 05Z,   0.40,   4.99,   5.39,  99.90,  -0.00,
04/18 06Z,   0.40,   5.87,   6.28,  99.90,   0.01,
04/18 07Z,   0.30,   6.31,   6.71,  99.90,   0.10,  (max)
04/18 08Z,   0.30,   6.09,   6.42,  99.90,   0.03,
04/18 09Z,   0.40,   5.12,   5.38,  99.90,  -0.14,
04/18 10Z,   0.40,   3.53,   3.58,  99.90,  -0.35,
04/18 11Z,   0.30,   1.69,   1.89,  99.90,  -0.10,
04/18 12Z,   0.30,   0.07,   0.51,  99.90,   0.14,
04/18 13Z,   0.40,  -0.92,  -0.37,  99.90,   0.15,
04/18 14Z,   0.40,  -1.12,  -0.61,  99.90,   0.11,  (min)
04/18 15Z,   0.30,  -0.62,  -0.19,  99.90,   0.13,
04/18 16Z,   0.30,   0.36,   0.76,  99.90,   0.10,
04/18 17Z,   0.40,   1.58,   1.91,  99.90,  -0.07,
04/18 18Z,   0.40,   2.82,   3.10,  99.90,  -0.12,
04/18 19Z,   0.40,   3.90,   4.17,  99.90,  -0.13,
04/18 20Z,   0.40,   4.60,   4.94,  99.90,  -0.06,
04/18 21Z,   0.40,   4.76,   5.06,  99.90,  -0.10,  (max)
04/18 22Z,   0.40,   4.34,   4.75,  99.90,   0.01,
04/18 23Z,   0.40,   3.52,   4.03,  99.90,   0.11,
04/19 00Z,   0.50,   2.64,   3.15,  99.90,   0.01,
04/19 01Z,   0.50,   2.08,   2.59,  99.90,   0.01,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/19 02Z,   0.50,   2.05,  99.90,   2.56,   0.01,  (min)
04/19 03Z,   0.40,   2.57,  99.90,   2.97,   0.01,
04/19 04Z,   0.50,   3.47,  99.90,   3.97,   0.00,
04/19 05Z,   0.50,   4.53,  99.90,   5.03,  -0.00,
04/19 06Z,   0.50,   5.53,  99.90,   6.02,  -0.00,
04/19 07Z,   0.40,   6.24,  99.90,   6.63,  -0.01,
04/19 08Z,   0.50,   6.44,  99.90,   6.93,  -0.01,  (max)
04/19 09Z,   0.60,   5.95,  99.90,   6.54,  -0.02,
04/19 10Z,   0.50,   4.74,  99.90,   5.22,  -0.02,
04/19 11Z,   0.40,   2.98,  99.90,   3.36,  -0.02,
04/19 12Z,   0.50,   1.10,  99.90,   1.57,  -0.03,
04/19 13Z,   0.60,  -0.43,  99.90,   0.14,  -0.03,
04/19 14Z,   0.50,  -1.27,  99.90,  -0.80,  -0.03,
04/19 15Z,   0.50,  -1.32,  99.90,  -0.85,  -0.03,  (min)
04/19 16Z,   0.60,  -0.72,  99.90,  -0.15,  -0.03,
04/19 17Z,   0.50,   0.31,  99.90,   0.77,  -0.03,
04/19 18Z,   0.50,   1.52,  99.90,   1.98,  -0.03,
04/19 19Z,   0.50,   2.73,  99.90,   3.20,  -0.03,
04/19 20Z,   0.50,   3.77,  99.90,   4.24,  -0.03,
04/19 21Z,   0.50,   4.44,  99.90,   4.91,  -0.03,
04/19 22Z,   0.60,   4.59,  99.90,   5.16,  -0.03,  (max)
04/19 23Z,   0.60,   4.22,  99.90,   4.79,  -0.03,
04/20 00Z,   0.60,   3.52,  99.90,   4.09,  -0.03,
04/20 01Z,   0.60,   2.81,  99.90,   3.38,  -0.03,
04/20 02Z,   0.60,   2.42,  99.90,   2.99,  -0.03,  (min)
04/20 03Z,   0.60,   2.52,  99.90,   3.09,  -0.03,
04/20 04Z,   0.60,   3.10,  99.90,   3.66,  -0.03,
04/20 05Z,   0.60,   3.97,  99.90,   4.54,  -0.03,
04/20 06Z,   0.60,   4.94,  99.90,   5.51,  -0.03,
04/20 07Z,   0.60,   5.80,  99.90,   6.36,  -0.03,
04/20 08Z,   0.60,   6.34,  99.90,   6.91,  -0.03,
04/20 09Z,   0.70,   6.35,  99.90,   7.02,  -0.03,  (max)
04/20 10Z,   0.60,   5.69,  99.90,   6.26,  -0.03,
04/20 11Z,   0.60,   4.34,  99.90,   4.91,  -0.03,
04/20 12Z,   0.60,   2.56,  99.90,   3.13,  -0.03,
04/20 13Z,   0.60,   0.75,  99.90,   1.32,  -0.03,
04/20 14Z,   0.60,  -0.64,  99.90,  -0.07,  -0.03,
04/20 15Z,   0.60,  -1.34,  99.90,  -0.77,  -0.03,  (min)
04/20 16Z,   0.70,  -1.29,  99.90,  -0.63,  -0.03,
04/20 17Z,   0.70,  -0.67,  99.90,  -0.00,  -0.03,
04/20 18Z,   0.70,   0.31,  99.90,   0.98,  -0.03,
04/20 19Z,   0.80,   1.46,  99.90,   2.23,  -0.03,
04/20 20Z,   0.80,   2.61,  99.90,   3.38,  -0.03,
04/20 21Z,   0.80,   3.60,  99.90,   4.37,  -0.03,
04/20 22Z,   0.90,   4.26,  99.90,   5.13,  -0.03,
04/20 23Z,   0.80,   4.44,  99.90,   5.21,  -0.03,  (max)
04/21 00Z,   0.70,   4.16,  99.90,   4.83,  -0.03,
04/21 01Z,   0.80,   3.59,  99.90,   4.36,  -0.03,
04/21 02Z,   0.70,   3.03,  99.90,   3.70,  -0.03,
04/21 03Z,   0.60,   2.76,  99.90,   3.33,  -0.03,  (min)
04/21 04Z,   0.60,   2.91,  99.90,   3.48,  -0.03,
04/21 05Z,   0.60,   3.44,  99.90,   4.01,  -0.03,
04/21 06Z,   0.50,   4.22,  99.90,   4.69,  -0.03,
04/21 07Z,   0.50,   5.06,  99.90,   5.53,  -0.03,
04/21 08Z,   0.60,   5.79,  99.90,   6.35,  -0.03,
04/21 09Z,   0.60,   6.20,  99.90,   6.77,  -0.03,  (max)
04/21 10Z,   0.60,   6.10,  99.90,   6.67,  -0.03,
04/21 11Z,   0.50,   5.37,  99.90,   5.84,  -0.03,
04/21 12Z,   0.60,   4.03,  99.90,   4.60,  -0.03,
04/21 13Z,   0.70,   2.33,  99.90,   3.00,  -0.03,
04/21 14Z,   0.60,   0.67,  99.90,   1.24,  -0.03,
04/21 15Z,   0.60,  -0.58,  99.90,  -0.01,  -0.03,
04/21 16Z,   0.60,  -1.17,  99.90,  -0.60,  -0.03,  (min)
04/21 17Z,   0.60,  -1.11,  99.90,  -0.55,  -0.03,
04/21 18Z,   0.60,  -0.55,  99.90,   0.02,  -0.03,
04/21 19Z,   0.70,   0.35,  99.90,   1.01,  -0.03,
04/21 20Z,   0.70,   1.40,  99.90,   2.07,  -0.03,
04/21 21Z,   0.70,   2.49,  99.90,   3.16,  -0.03,
04/21 22Z,   0.70,   3.45,  99.90,   4.12,  -0.03,
04/21 23Z,   0.80,   4.12,  99.90,   4.89,  -0.03,
04/22 00Z,   0.70,   4.37,  99.90,   5.04,  -0.03,  (max)
04/22 01Z,   0.80,   4.19,  99.90,   4.96,  -0.03,
04/22 02Z,   0.80,   3.74,  99.90,   4.50,  -0.03,
04/22 03Z,   0.70,   3.27,  99.90,   3.94,  -0.03,
04/22 04Z,   0.80,   3.02,  99.90,   3.79,  -0.03,  (min)
04/22 05Z,   0.80,   3.12,  99.90,   3.89,  -0.03,
04/22 06Z,   0.70,   3.54,  99.90,   4.21,  -0.03,
04/22 07Z,   0.60,   4.19,  99.90,   4.76,  -0.03,
04/22 08Z,   0.60,   4.91,  99.90,   5.48,  -0.03,
04/22 09Z,   0.60,   5.54,  99.90,   6.10,  -0.03,
04/22 10Z,   0.50,   5.89,  99.90,   6.35,  -0.03,  (max)
04/22 11Z,   0.50,   5.77,  99.90,   6.24,  -0.03,
04/22 12Z,   0.50,   5.08,  99.90,   5.55,  -0.03,
04/22 13Z,   0.50,   3.85,  99.90,   4.32,  -0.03,
04/22 14Z,   0.40,   2.31,  99.90,   2.68,  -0.03,
04/22 15Z,   0.40,   0.81,  99.90,   1.18,  -0.03,
04/22 16Z,   0.40,  -0.31,  99.90,   0.06,  -0.03,
04/22 17Z,   0.30,  -0.87,  99.90,  -0.60,  -0.03,  (min)
04/22 18Z,   0.30,  -0.86,  99.90,  -0.59,  -0.03,