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 15:22:02 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/16 00Z,   0.80,   4.91,   5.83,  99.90,   0.12,
10/16 01Z,   0.80,   3.82,   4.71,  99.90,   0.09,
10/16 02Z,   0.80,   2.83,   3.67,  99.90,   0.04,
10/16 03Z,   0.90,   1.95,   2.68,  99.90,  -0.17,
10/16 04Z,   0.90,   1.20,   1.88,  99.90,  -0.22,  (min)
10/16 05Z,   0.90,   1.09,   1.93,  99.90,  -0.06,
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,   0.70,   5.29,   4.56,  99.90,  -1.43,
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,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/17 16Z,   0.50,   1.40,  99.90,   0.94,  -0.96,
10/17 17Z,   0.50,   1.00,  99.90,   0.62,  -0.89,  (min)
10/17 18Z,   0.50,   1.23,  99.90,   0.91,  -0.82,
10/17 19Z,   0.50,   2.49,  99.90,   2.24,  -0.75,
10/17 20Z,   0.50,   4.24,  99.90,   4.06,  -0.68,
10/17 21Z,   0.50,   5.47,  99.90,   5.35,  -0.61,
10/17 22Z,   0.50,   6.15,  99.90,   6.10,  -0.55,
10/17 23Z,   0.50,   6.56,  99.90,   6.58,  -0.48,  (max)
10/18 00Z,   0.50,   6.36,  99.90,   6.45,  -0.41,
10/18 01Z,   0.60,   5.47,  99.90,   5.73,  -0.34,
10/18 02Z,   0.60,   4.36,  99.90,   4.69,  -0.27,
10/18 03Z,   0.60,   3.29,  99.90,   3.68,  -0.20,
10/18 04Z,   0.70,   2.37,  99.90,   2.87,  -0.20,
10/18 05Z,   0.70,   1.61,  99.90,   2.10,  -0.20,
10/18 06Z,   0.70,   1.11,  99.90,   1.61,  -0.20,  (min)
10/18 07Z,   0.80,   1.44,  99.90,   2.04,  -0.20,
10/18 08Z,   0.80,   2.68,  99.90,   3.28,  -0.20,
10/18 09Z,   0.80,   3.91,  99.90,   4.51,  -0.20,
10/18 10Z,   0.80,   4.69,  99.90,   5.29,  -0.20,
10/18 11Z,   0.80,   5.35,  99.90,   5.94,  -0.20,
10/18 12Z,   0.80,   5.64,  99.90,   6.23,  -0.20,  (max)
10/18 13Z,   0.80,   5.13,  99.90,   5.73,  -0.20,
10/18 14Z,   0.80,   4.09,  99.90,   4.69,  -0.20,
10/18 15Z,   0.80,   2.95,  99.90,   3.55,  -0.20,
10/18 16Z,   0.80,   1.96,  99.90,   2.56,  -0.20,
10/18 17Z,   0.80,   1.29,  99.90,   1.89,  -0.20,
10/18 18Z,   0.90,   0.98,  99.90,   1.68,  -0.20,  (min)
10/18 19Z,   0.90,   1.35,  99.90,   2.05,  -0.20,
10/18 20Z,   0.90,   2.74,  99.90,   3.44,  -0.20,
10/18 21Z,   1.00,   4.42,  99.90,   5.21,  -0.20,
10/18 22Z,   1.00,   5.49,  99.90,   6.29,  -0.20,
10/18 23Z,   1.00,   6.13,  99.90,   6.93,  -0.20,
10/19 00Z,   1.10,   6.51,  99.90,   7.41,  -0.20,  (max)
10/19 01Z,   1.10,   6.23,  99.90,   7.13,  -0.20,
10/19 02Z,   1.10,   5.31,  99.90,   6.21,  -0.20,
10/19 03Z,   1.10,   4.20,  99.90,   5.10,  -0.20,
10/19 04Z,   1.10,   3.13,  99.90,   4.03,  -0.20,
10/19 05Z,   1.10,   2.23,  99.90,   3.12,  -0.20,
10/19 06Z,   1.20,   1.48,  99.90,   2.48,  -0.20,
10/19 07Z,   1.20,   1.08,  99.90,   2.08,  -0.20,  (min)
10/19 08Z,   1.20,   1.57,  99.90,   2.57,  -0.20,
10/19 09Z,   1.20,   2.86,  99.90,   3.86,  -0.20,
10/19 10Z,   1.20,   4.00,  99.90,   5.00,  -0.20,
10/19 11Z,   1.20,   4.76,  99.90,   5.75,  -0.20,
10/19 12Z,   1.20,   5.42,  99.90,   6.42,  -0.20,
10/19 13Z,   1.20,   5.65,  99.90,   6.65,  -0.20,  (max)
10/19 14Z,   1.20,   5.07,  99.90,   6.07,  -0.20,
10/19 15Z,   1.20,   4.01,  99.90,   5.01,  -0.20,
10/19 16Z,   1.20,   2.87,  99.90,   3.87,  -0.20,
10/19 17Z,   1.20,   1.90,  99.90,   2.90,  -0.20,
10/19 18Z,   1.20,   1.25,  99.90,   2.25,  -0.20,
10/19 19Z,   1.20,   0.96,  99.90,   1.96,  -0.20,  (min)
10/19 20Z,   1.20,   1.44,  99.90,   2.44,  -0.20,
10/19 21Z,   1.20,   2.90,  99.90,   3.89,  -0.20,
10/19 22Z,   1.20,   4.49,  99.90,   5.49,  -0.20,
10/19 23Z,   1.30,   5.48,  99.90,   6.58,  -0.20,
10/20 00Z,   1.30,   6.14,  99.90,   7.23,  -0.20,
10/20 01Z,   1.30,   6.51,  99.90,   7.61,  -0.20,  (max)
10/20 02Z,   1.40,   6.16,  99.90,   7.36,  -0.20,
10/20 03Z,   1.40,   5.21,  99.90,   6.40,  -0.20,
10/20 04Z,   1.50,   4.08,  99.90,   5.38,  -0.20,
10/20 05Z,   1.50,   3.01,  99.90,   4.30,  -0.20,
10/20 06Z,   1.60,   2.09,  99.90,   3.49,  -0.20,
10/20 07Z,   1.60,   1.35,  99.90,   2.75,  -0.20,
10/20 08Z,   1.60,   1.02,  99.90,   2.42,  -0.20,  (min)
10/20 09Z,   1.70,   1.67,  99.90,   3.17,  -0.20,
10/20 10Z,   1.70,   3.01,  99.90,   4.50,  -0.20,
10/20 11Z,   1.70,   4.11,  99.90,   5.61,  -0.20,
10/20 12Z,   1.70,   4.90,  99.90,   6.40,  -0.20,
10/20 13Z,   1.80,   5.60,  99.90,   7.20,  -0.20,
10/20 14Z,   1.80,   5.75,  99.90,   7.35,  -0.20,  (max)
10/20 15Z,   1.80,   5.09,  99.90,   6.69,  -0.20,
10/20 16Z,   1.80,   4.00,  99.90,   5.60,  -0.20,
10/20 17Z,   1.80,   2.86,  99.90,   4.46,  -0.20,
10/20 18Z,   1.80,   1.90,  99.90,   3.50,  -0.20,
10/20 19Z,   1.80,   1.23,  99.90,   2.83,  -0.20,
10/20 20Z,   1.80,   0.93,  99.90,   2.53,  -0.20,  (min)
10/20 21Z,   1.80,   1.49,  99.90,   3.09,  -0.20,
10/20 22Z,   1.90,   3.00,  99.90,   4.69,  -0.20,
10/20 23Z,   1.90,   4.52,  99.90,   6.22,  -0.20,
10/21 00Z,   1.90,   5.49,  99.90,   7.19,  -0.20,
10/21 01Z,   1.90,   6.20,  99.90,   7.90,  -0.20,
10/21 02Z,   1.90,   6.55,  99.90,   8.24,  -0.20,  0.07 ft above HAT  (max)
10/21 03Z,   2.00,   6.11,  99.90,   7.91,  -0.20,
10/21 04Z,   2.00,   5.10,  99.90,   6.90,  -0.20,
10/21 05Z,   2.00,   3.96,  99.90,   5.75,  -0.20,
10/21 06Z,   2.00,   2.87,  99.90,   4.66,  -0.20,
10/21 07Z,  99.90,   1.94,  99.90,  99.90,  -0.20,
10/21 08Z,  99.90,   1.18,  99.90,  99.90,  -0.20,
10/21 09Z,  99.90,   0.95,  99.90,  99.90,  -0.20,
10/21 10Z,  99.90,   1.77,  99.90,  99.90,  -0.20,
10/21 11Z,  99.90,   3.19,  99.90,  99.90,  -0.20,
10/21 12Z,  99.90,   4.31,  99.90,  99.90,  -0.20,