EXTRA-TROPICAL  STORM  SURGE
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Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
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Gulf of Alaska
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Eastport, ME
Bar Harbor, ME
Portland, ME
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Boston, MA
Buzzards Bay MA
Woods Hole, MA
Nantucket, MA
Providence, RI
Newport, RI
Block Island, RI
Montauk Point NY
New London, CT
Bridgeport, CT
Port Jefferson NY
Kings Pnt, NY
The Battery, NY
Bergen Pnt, NY
Sandy Hook, NJ
Atlantic City, NJ
Cape May, NJ
Philadelphia, PA
Reedy Pnt, DE
Lewes, DE
Surge List
East Coast
#Portland, ME : 05/21/2026 17:21:06 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/20 00Z,   0.30,   0.20,   0.31,  99.90,  -0.19,  (min)
05/20 01Z,   0.20,   1.15,   1.26,  99.90,  -0.09,
05/20 02Z,   0.20,   3.23,   3.33,  99.90,  -0.10,
05/20 03Z,   0.20,   5.98,   6.22,  99.90,   0.04,
05/20 04Z,   0.20,   8.68,   8.94,  99.90,   0.06,
05/20 05Z,   0.10,  10.60,  10.79,  99.90,   0.09,
05/20 06Z,   0.20,  11.30,  11.56,  99.90,   0.06,  (max)
05/20 07Z,   0.30,  10.71,  10.96,  99.90,  -0.05,
05/20 08Z,   0.30,   8.90,   9.21,  99.90,   0.01,
05/20 09Z,   0.30,   6.15,   6.36,  99.90,  -0.09,
05/20 10Z,   0.40,   3.09,   3.35,  99.90,  -0.14,
05/20 11Z,   0.40,   0.52,   0.67,  99.90,  -0.25,
05/20 12Z,   0.40,  -0.93,  -0.77,  99.90,  -0.24,  (min)
05/20 13Z,   0.40,  -1.02,  -0.74,  99.90,  -0.12,
05/20 14Z,   0.50,   0.18,   0.31,  99.90,  -0.37,
05/20 15Z,   0.50,   2.41,   2.70,  99.90,  -0.21,
05/20 16Z,   0.50,   5.11,   5.60,  99.90,  -0.01,
05/20 17Z,   0.50,   7.53,   7.99,  99.90,  -0.04,
05/20 18Z,   0.50,   9.09,   9.54,  99.90,  -0.05,
05/20 19Z,   0.50,   9.53,   9.89,  99.90,  -0.14,  (max)
05/20 20Z,   0.50,   8.82,   9.18,  99.90,  -0.14,
05/20 21Z,   0.50,   7.05,   7.36,  99.90,  -0.19,
05/20 22Z,   0.50,   4.64,   4.78,  99.90,  -0.36,
05/20 23Z,   0.50,   2.32,   2.48,  99.90,  -0.34,
05/21 00Z,   0.40,   0.80,   0.96,  99.90,  -0.24,
05/21 01Z,   0.40,   0.48,   0.64,  99.90,  -0.24,  (min)
05/21 02Z,   0.30,   1.40,   1.51,  99.90,  -0.19,
05/21 03Z,   0.30,   3.38,   3.53,  99.90,  -0.15,
05/21 04Z,   0.30,   5.97,   6.25,  99.90,  -0.02,
05/21 05Z,   0.30,   8.49,   8.96,  99.90,   0.17,
05/21 06Z,   0.20,  10.24,  10.43,  99.90,  -0.01,
05/21 07Z,   0.20,  10.87,  11.09,  99.90,   0.02,  (max)
05/21 08Z,   0.20,  10.30,  10.60,  99.90,   0.10,
05/21 09Z,   0.30,   8.57,   8.66,  99.90,  -0.21,
05/21 10Z,   0.30,   5.97,   5.88,  99.90,  -0.39,
05/21 11Z,   0.30,   3.11,   3.18,  99.90,  -0.23,
05/21 12Z,   0.20,   0.74,   0.65,  99.90,  -0.29,
05/21 13Z,   0.20,  -0.56,  -0.65,  99.90,  -0.29,  (min)
05/21 14Z,   0.20,  -0.62,  -0.60,  99.90,  -0.18,
05/21 15Z,   0.20,   0.54,   0.45,  99.90,  -0.29,
05/21 16Z,   0.30,   2.66,   2.74,  99.90,  -0.22,
05/21 17Z,   0.30,   5.21,   5.41,  99.90,  -0.10,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/21 18Z,   0.30,   7.48,  99.90,   7.68,  -0.09,
05/21 19Z,   0.40,   8.93,  99.90,   9.24,  -0.09,
05/21 20Z,   0.40,   9.36,  99.90,   9.67,  -0.09,  (max)
05/21 21Z,   0.40,   8.68,  99.90,   9.00,  -0.08,
05/21 22Z,   0.40,   7.00,  99.90,   7.32,  -0.08,
05/21 23Z,   0.40,   4.71,  99.90,   5.03,  -0.08,
05/22 00Z,   0.40,   2.52,  99.90,   2.85,  -0.07,
05/22 01Z,   0.40,   1.09,  99.90,   1.42,  -0.07,
05/22 02Z,   0.30,   0.76,  99.90,   0.99,  -0.07,  (min)
05/22 03Z,   0.30,   1.56,  99.90,   1.80,  -0.06,
05/22 04Z,   0.20,   3.37,  99.90,   3.51,  -0.06,
05/22 05Z,   0.20,   5.78,  99.90,   5.92,  -0.06,
05/22 06Z,   0.10,   8.11,  99.90,   8.15,  -0.06,
05/22 07Z,   0.10,   9.75,  99.90,   9.79,  -0.06,
05/22 08Z,   0.10,  10.37,  99.90,  10.41,  -0.06,  (max)
05/22 09Z,   0.10,   9.87,  99.90,   9.92,  -0.06,
05/22 10Z,   0.10,   8.30,  99.90,   8.34,  -0.06,
05/22 11Z,   0.10,   5.89,  99.90,   5.93,  -0.06,
05/22 12Z,   0.10,   3.24,  99.90,   3.28,  -0.06,
05/22 13Z,   0.10,   1.06,  99.90,   1.11,  -0.06,
05/22 14Z,   0.10,  -0.14,  99.90,  -0.10,  -0.06,
05/22 15Z,   0.10,  -0.21,  99.90,  -0.17,  -0.06,  (min)
05/22 16Z,   0.00,   0.87,  99.90,   0.81,  -0.06,
05/22 17Z,   0.00,   2.87,  99.90,   2.82,  -0.06,
05/22 18Z,   0.00,   5.28,  99.90,   5.22,  -0.06,
05/22 19Z,   0.00,   7.42,  99.90,   7.36,  -0.06,
05/22 20Z,   0.00,   8.81,  99.90,   8.76,  -0.06,
05/22 21Z,   0.00,   9.25,  99.90,   9.19,  -0.06,  (max)
05/22 22Z,   0.00,   8.64,  99.90,   8.58,  -0.06,
05/22 23Z,   0.00,   7.05,  99.90,   6.99,  -0.06,
05/23 00Z,   0.00,   4.87,  99.90,   4.81,  -0.06,
05/23 01Z,   0.00,   2.78,  99.90,   2.72,  -0.06,
05/23 02Z,   0.00,   1.37,  99.90,   1.32,  -0.06,
05/23 03Z,   0.00,   0.96,  99.90,   0.90,  -0.06,  (min)
05/23 04Z,   0.00,   1.61,  99.90,   1.56,  -0.06,
05/23 05Z,   0.00,   3.24,  99.90,   3.19,  -0.06,
05/23 06Z,   0.00,   5.46,  99.90,   5.41,  -0.06,
05/23 07Z,   0.00,   7.64,  99.90,   7.58,  -0.06,
05/23 08Z,   0.00,   9.20,  99.90,   9.15,  -0.06,
05/23 09Z,   0.00,   9.86,  99.90,   9.80,  -0.06,  (max)
05/23 10Z,   0.00,   9.48,  99.90,   9.43,  -0.06,
05/23 11Z,   0.00,   8.07,  99.90,   8.01,  -0.06,
05/23 12Z,   0.00,   5.85,  99.90,   5.80,  -0.06,
05/23 13Z,   0.00,   3.41,  99.90,   3.35,  -0.06,
05/23 14Z,   0.00,   1.40,  99.90,   1.34,  -0.06,
05/23 15Z,   0.00,   0.26,  99.90,   0.20,  -0.06,
05/23 16Z,   0.00,   0.17,  99.90,   0.11,  -0.06,  (min)
05/23 17Z,   0.00,   1.17,  99.90,   1.11,  -0.06,
05/23 18Z,   0.00,   3.08,  99.90,   3.02,  -0.06,
05/23 19Z,   0.00,   5.37,  99.90,   5.31,  -0.06,
05/23 20Z,   0.00,   7.41,  99.90,   7.36,  -0.06,
05/23 21Z,   0.00,   8.77,  99.90,   8.72,  -0.06,
05/23 22Z,   0.00,   9.24,  99.90,   9.18,  -0.06,  (max)
05/23 23Z,   0.00,   8.68,  99.90,   8.62,  -0.06,
05/24 00Z,   0.00,   7.15,  99.90,   7.09,  -0.06,
05/24 01Z,   0.00,   5.04,  99.90,   4.98,  -0.06,
05/24 02Z,   0.00,   3.00,  99.90,   2.95,  -0.06,
05/24 03Z,   0.00,   1.58,  99.90,   1.52,  -0.06,
05/24 04Z,   0.00,   1.06,  99.90,   1.00,  -0.06,  (min)
05/24 05Z,  -0.10,   1.56,  99.90,   1.40,  -0.06,
05/24 06Z,  -0.10,   3.03,  99.90,   2.87,  -0.06,
05/24 07Z,  -0.10,   5.10,  99.90,   4.94,  -0.06,
05/24 08Z,   0.00,   7.17,  99.90,   7.11,  -0.06,
05/24 09Z,   0.00,   8.70,  99.90,   8.64,  -0.06,
05/24 10Z,   0.00,   9.41,  99.90,   9.35,  -0.06,  (max)
05/24 11Z,   0.00,   9.15,  99.90,   9.10,  -0.06,
05/24 12Z,   0.00,   7.89,  99.90,   7.83,  -0.06,
05/24 13Z,   0.00,   5.84,  99.90,   5.78,  -0.06,
05/24 14Z,   0.00,   3.56,  99.90,   3.51,  -0.06,
05/24 15Z,   0.00,   1.68,  99.90,   1.62,  -0.06,
05/24 16Z,   0.00,   0.59,  99.90,   0.53,  -0.06,
05/24 17Z,   0.00,   0.49,  99.90,   0.43,  -0.06,  (min)
05/24 18Z,   0.00,   1.46,  99.90,   1.40,  -0.06,
05/24 19Z,   0.00,   3.31,  99.90,   3.25,  -0.06,
05/24 20Z,   0.00,   5.53,  99.90,   5.47,  -0.06,
05/24 21Z,   0.00,   7.51,  99.90,   7.45,  -0.06,
05/24 22Z,   0.00,   8.84,  99.90,   8.79,  -0.06,
05/24 23Z,   0.00,   9.31,  99.90,   9.26,  -0.06,  (max)
05/25 00Z,   0.00,   8.76,  99.90,   8.71,  -0.06,
05/25 01Z,   0.00,   7.24,  99.90,   7.19,  -0.06,
05/25 02Z,   0.00,   5.15,  99.90,   5.10,  -0.06,
05/25 03Z,   0.10,   3.12,  99.90,   3.16,  -0.06,
05/25 04Z,   0.10,   1.65,  99.90,   1.69,  -0.06,
05/25 05Z,   0.10,   1.02,  99.90,   1.07,  -0.06,  (min)
05/25 06Z,   0.10,   1.41,  99.90,   1.46,  -0.06,
05/25 07Z,   0.20,   2.79,  99.90,   2.93,  -0.06,
05/25 08Z,   0.20,   4.77,  99.90,   4.92,  -0.06,
05/25 09Z,   0.20,   6.78,  99.90,   6.92,  -0.06,
05/25 10Z,   0.20,   8.30,  99.90,   8.44,  -0.06,
05/25 11Z,   0.20,   9.06,  99.90,   9.21,  -0.06,  (max)
05/25 12Z,   0.20,   8.90,  99.90,   9.04,  -0.06,