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
Eastport, ME
Bar Harbor, ME
Portland, ME
Portsmouth, ME
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
#Philadelphia, PA : 10/17/2026 21:23:01 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/16 06Z,   0.90,   2.09,   3.47,  99.90,   0.48,
10/16 07Z,   0.90,   3.51,   4.73,  99.90,   0.32,
10/16 08Z,   0.90,   4.55,   5.75,  99.90,   0.30,
10/16 09Z,   0.90,   5.32,   6.45,  99.90,   0.23,
10/16 10Z,   0.90,   5.81,   6.74,  99.90,   0.03,  (max)
10/16 11Z,   0.90,   5.52,   6.12,  99.90,  -0.30,
10/16 12Z,   1.00,   4.56,   5.11,  99.90,  -0.45,
10/16 13Z,   1.00,   3.43,   4.10,  99.90,  -0.33,
10/16 14Z,   1.00,   2.38,   3.17,  99.90,  -0.21,
10/16 15Z,   1.00,   1.59,   2.26,  99.90,  -0.33,
10/16 16Z,   1.00,   1.08,   1.63,  99.90,  -0.45,  (min)
10/16 17Z,   1.00,   1.10,   2.34,  99.90,   0.24,
10/16 18Z,   1.00,   2.16,   4.07,  99.90,   0.91,
10/16 19Z,   1.00,   3.93,   5.40,  99.90,   0.47,
10/16 20Z,   1.00,   5.33,   6.50,  99.90,   0.17,
10/16 21Z,   1.00,   6.13,   7.35,  99.90,   0.22,
10/16 22Z,   1.00,   6.63,   7.72,  99.90,   0.09,  (max)
10/16 23Z,   1.00,   6.53,   7.26,  99.90,  -0.27,
10/17 00Z,   1.00,   5.71,   6.21,  99.90,  -0.50,
10/17 01Z,   1.00,   4.59,   5.10,  99.90,  -0.49,
10/17 02Z,   1.00,   3.51,   4.04,  99.90,  -0.47,
10/17 03Z,   1.00,   2.56,   3.03,  99.90,  -0.53,
10/17 04Z,   0.90,   1.75,   2.11,  99.90,  -0.54,
10/17 05Z,   0.90,   1.14,   1.38,  99.90,  -0.66,
10/17 06Z,   0.90,   1.28,   1.32,  99.90,  -0.86,  (min)
10/17 07Z,   0.80,   2.42,   2.77,  99.90,  -0.45,
10/17 08Z,   0.80,   3.76,   3.85,  99.90,  -0.71,
10/17 09Z,   0.80,   4.64,   4.76,  99.90,  -0.68,
10/17 10Z,   0.80,   5.33,   5.18,  99.90,  -0.95,  (max)
10/17 11Z,   0.70,   5.70,   5.14,  99.90,  -1.26,
10/17 12Z,   0.60,   5.29,   4.56,  99.90,  -1.33,
10/17 13Z,   0.60,   4.28,   3.64,  99.90,  -1.24,
10/17 14Z,   0.60,   3.13,   2.67,  99.90,  -1.06,
10/17 15Z,   0.60,   2.12,   1.69,  99.90,  -1.03,
10/17 16Z,   0.50,   1.40,   0.88,  99.90,  -1.02,
10/17 17Z,   0.50,   1.00,   0.25,  99.90,  -1.25,  (min)
10/17 18Z,   0.50,   1.23,   1.02,  99.90,  -0.71,
10/17 19Z,   0.50,   2.49,   2.55,  99.90,  -0.44,
10/17 20Z,   0.50,   4.24,   3.91,  99.90,  -0.83,
10/17 21Z,   0.50,   5.47,   5.02,  99.90,  -0.95,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/17 22Z,   0.50,   6.15,  99.90,   5.76,  -0.89,
10/17 23Z,   0.50,   6.56,  99.90,   6.23,  -0.83,  (max)
10/18 00Z,   0.60,   6.36,  99.90,   6.18,  -0.77,
10/18 01Z,   0.60,   5.47,  99.90,   5.36,  -0.72,
10/18 02Z,   0.60,   4.36,  99.90,   4.30,  -0.66,
10/18 03Z,   0.60,   3.29,  99.90,   3.29,  -0.60,
10/18 04Z,   0.60,   2.37,  99.90,   2.43,  -0.54,
10/18 05Z,   0.70,   1.61,  99.90,   1.82,  -0.48,
10/18 06Z,   0.70,   1.11,  99.90,   1.39,  -0.43,  (min)
10/18 07Z,   0.70,   1.44,  99.90,   1.78,  -0.37,
10/18 08Z,   0.70,   2.68,  99.90,   3.07,  -0.31,
10/18 09Z,   0.70,   3.91,  99.90,   4.36,  -0.25,
10/18 10Z,   0.70,   4.69,  99.90,   5.14,  -0.25,
10/18 11Z,   0.70,   5.35,  99.90,   5.79,  -0.25,
10/18 12Z,   0.80,   5.64,  99.90,   6.18,  -0.25,  (max)
10/18 13Z,   0.80,   5.13,  99.90,   5.68,  -0.25,
10/18 14Z,   0.80,   4.09,  99.90,   4.64,  -0.25,
10/18 15Z,   0.80,   2.95,  99.90,   3.50,  -0.25,
10/18 16Z,   0.80,   1.96,  99.90,   2.51,  -0.25,
10/18 17Z,   0.80,   1.29,  99.90,   1.84,  -0.25,
10/18 18Z,   0.80,   0.98,  99.90,   1.53,  -0.25,  (min)
10/18 19Z,   0.90,   1.35,  99.90,   2.00,  -0.25,
10/18 20Z,   0.90,   2.74,  99.90,   3.39,  -0.25,
10/18 21Z,   0.90,   4.42,  99.90,   5.06,  -0.25,
10/18 22Z,   0.90,   5.49,  99.90,   6.14,  -0.25,
10/18 23Z,   1.00,   6.13,  99.90,   6.88,  -0.25,
10/19 00Z,   1.00,   6.51,  99.90,   7.26,  -0.25,  (max)
10/19 01Z,   1.00,   6.23,  99.90,   6.98,  -0.25,
10/19 02Z,   1.00,   5.31,  99.90,   6.06,  -0.25,
10/19 03Z,   1.00,   4.20,  99.90,   4.95,  -0.25,
10/19 04Z,   1.10,   3.13,  99.90,   3.98,  -0.25,
10/19 05Z,   1.10,   2.23,  99.90,   3.07,  -0.25,
10/19 06Z,   1.10,   1.48,  99.90,   2.33,  -0.25,
10/19 07Z,   1.10,   1.08,  99.90,   1.93,  -0.25,  (min)
10/19 08Z,   1.10,   1.57,  99.90,   2.42,  -0.25,
10/19 09Z,   1.10,   2.86,  99.90,   3.71,  -0.25,
10/19 10Z,   1.20,   4.00,  99.90,   4.95,  -0.25,
10/19 11Z,   1.20,   4.76,  99.90,   5.70,  -0.25,
10/19 12Z,   1.20,   5.42,  99.90,   6.37,  -0.25,
10/19 13Z,   1.20,   5.65,  99.90,   6.60,  -0.25,  (max)
10/19 14Z,   1.20,   5.07,  99.90,   6.02,  -0.25,
10/19 15Z,   1.20,   4.01,  99.90,   4.96,  -0.25,
10/19 16Z,   1.20,   2.87,  99.90,   3.82,  -0.25,
10/19 17Z,   1.10,   1.90,  99.90,   2.75,  -0.25,
10/19 18Z,   1.10,   1.25,  99.90,   2.10,  -0.25,
10/19 19Z,   1.10,   0.96,  99.90,   1.81,  -0.25,  (min)
10/19 20Z,   1.10,   1.44,  99.90,   2.29,  -0.25,
10/19 21Z,   1.10,   2.90,  99.90,   3.74,  -0.25,
10/19 22Z,   1.20,   4.49,  99.90,   5.44,  -0.25,
10/19 23Z,   1.20,   5.48,  99.90,   6.43,  -0.25,
10/20 00Z,   1.30,   6.14,  99.90,   7.18,  -0.25,
10/20 01Z,   1.30,   6.51,  99.90,   7.56,  -0.25,  (max)
10/20 02Z,   1.40,   6.16,  99.90,   7.31,  -0.25,
10/20 03Z,   1.40,   5.21,  99.90,   6.35,  -0.25,
10/20 04Z,   1.50,   4.08,  99.90,   5.33,  -0.25,
10/20 05Z,   1.60,   3.01,  99.90,   4.35,  -0.25,
10/20 06Z,   1.60,   2.09,  99.90,   3.44,  -0.25,
10/20 07Z,   1.60,   1.35,  99.90,   2.70,  -0.25,
10/20 08Z,   1.70,   1.02,  99.90,   2.47,  -0.25,  (min)
10/20 09Z,   1.70,   1.67,  99.90,   3.12,  -0.25,
10/20 10Z,   1.70,   3.01,  99.90,   4.45,  -0.25,
10/20 11Z,   1.80,   4.11,  99.90,   5.66,  -0.25,
10/20 12Z,   1.80,   4.90,  99.90,   6.45,  -0.25,
10/20 13Z,   1.80,   5.60,  99.90,   7.15,  -0.25,
10/20 14Z,   1.80,   5.75,  99.90,   7.30,  -0.25,  (max)
10/20 15Z,   1.80,   5.09,  99.90,   6.64,  -0.25,
10/20 16Z,   1.80,   4.00,  99.90,   5.55,  -0.25,
10/20 17Z,   1.80,   2.86,  99.90,   4.41,  -0.25,
10/20 18Z,   1.80,   1.90,  99.90,   3.45,  -0.25,
10/20 19Z,   1.80,   1.23,  99.90,   2.78,  -0.25,
10/20 20Z,   1.90,   0.93,  99.90,   2.58,  -0.25,  (min)
10/20 21Z,   1.90,   1.49,  99.90,   3.14,  -0.25,
10/20 22Z,   1.90,   3.00,  99.90,   4.64,  -0.25,
10/20 23Z,   1.90,   4.52,  99.90,   6.17,  -0.25,
10/21 00Z,   2.00,   5.49,  99.90,   7.24,  -0.25,
10/21 01Z,   2.00,   6.20,  99.90,   7.95,  -0.25,
10/21 02Z,   2.00,   6.55,  99.90,   8.29,  -0.25,  0.12 ft above HAT  (max)
10/21 03Z,   2.10,   6.11,  99.90,   7.96,  -0.25,
10/21 04Z,   2.10,   5.10,  99.90,   6.95,  -0.25,
10/21 05Z,   2.10,   3.96,  99.90,   5.80,  -0.25,
10/21 06Z,   2.10,   2.87,  99.90,   4.71,  -0.25,
10/21 07Z,   2.10,   1.94,  99.90,   3.78,  -0.25,
10/21 08Z,   2.10,   1.18,  99.90,   3.02,  -0.25,
10/21 09Z,   2.10,   0.95,  99.90,   2.79,  -0.25,  (min)
10/21 10Z,   2.10,   1.77,  99.90,   3.62,  -0.25,
10/21 11Z,   2.20,   3.19,  99.90,   5.13,  -0.25,
10/21 12Z,   2.20,   4.31,  99.90,   6.26,  -0.25,
10/21 13Z,  99.90,   5.17,  99.90,  99.90,  -0.25,
10/21 14Z,  99.90,   5.87,  99.90,  99.90,  -0.25,
10/21 15Z,  99.90,   5.91,  99.90,  99.90,  -0.25,
10/21 16Z,  99.90,   5.15,  99.90,  99.90,  -0.25,
10/21 17Z,  99.90,   4.02,  99.90,  99.90,  -0.25,
10/21 18Z,  99.90,   2.88,  99.90,  99.90,  -0.25,