EXTRA-TROPICAL  STORM  SURGE
N A T I O N A L    O C E A N I C    A N D    A T M O S P H E R I C    A D M I N I S T R A T I O N

  • This website is considered EXPERIMENTAL, is supported on an 8x5 basis, and has no guarantee of availability.
  • The data located HERE are considered OPERATIONAL and are supported on a 24x7 basis.
About
Manual
Disclaimer
Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
Mid-Atlantic
Southeast
Gulf
Northwest
Alaska
Gulf of Alaska
Status
Stations
Surge List
#Philadelphia, PA : 04/12/2026 11:22:01 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/10 12Z,   0.40,   6.31,   6.65,  99.90,  -0.06,  (max)
04/10 13Z,   0.40,   6.17,   6.04,  99.90,  -0.53,
04/10 14Z,   0.40,   5.33,   5.08,  99.90,  -0.65,
04/10 15Z,   0.40,   4.17,   4.06,  99.90,  -0.51,
04/10 16Z,   0.40,   3.06,   3.07,  99.90,  -0.39,
04/10 17Z,   0.40,   2.12,   2.05,  99.90,  -0.47,
04/10 18Z,   0.40,   1.40,   1.15,  99.90,  -0.65,
04/10 19Z,   0.40,   0.94,   0.53,  99.90,  -0.81,  (min)
04/10 20Z,   0.40,   1.19,   1.04,  99.90,  -0.55,
04/10 21Z,   0.40,   2.39,   2.55,  99.90,  -0.24,
04/10 22Z,   0.40,   3.76,   3.71,  99.90,  -0.45,
04/10 23Z,   0.40,   4.62,   4.82,  99.90,  -0.20,
04/11 00Z,   0.30,   5.25,   5.73,  99.90,   0.18,
04/11 01Z,   0.30,   5.63,   6.11,  99.90,   0.18,  (max)
04/11 02Z,   0.30,   5.26,   5.73,  99.90,   0.17,
04/11 03Z,   0.30,   4.26,   4.87,  99.90,   0.31,
04/11 04Z,   0.40,   3.10,   3.93,  99.90,   0.43,
04/11 05Z,   0.40,   2.06,   3.00,  99.90,   0.54,
04/11 06Z,   0.40,   1.34,   2.06,  99.90,   0.32,
04/11 07Z,   0.40,   0.96,   1.33,  99.90,  -0.03,  (min)
04/11 08Z,   0.40,   1.16,   1.48,  99.90,  -0.08,
04/11 09Z,   0.40,   2.37,   2.92,  99.90,   0.15,
04/11 10Z,   0.40,   4.08,   4.13,  99.90,  -0.35,
04/11 11Z,   0.40,   5.28,   5.19,  99.90,  -0.49,
04/11 12Z,   0.40,   5.91,   5.96,  99.90,  -0.35,
04/11 13Z,   0.40,   6.30,   6.42,  99.90,  -0.28,  (max)
04/11 14Z,   0.40,   6.12,   5.97,  99.90,  -0.55,
04/11 15Z,   0.40,   5.24,   4.92,  99.90,  -0.72,
04/11 16Z,   0.30,   4.11,   3.88,  99.90,  -0.53,
04/11 17Z,   0.30,   3.02,   2.84,  99.90,  -0.48,
04/11 18Z,   0.30,   2.10,   1.81,  99.90,  -0.59,
04/11 19Z,   0.30,   1.38,   0.91,  99.90,  -0.77,
04/11 20Z,   0.30,   0.94,   0.21,  99.90,  -1.03,  (min)
04/11 21Z,   0.20,   1.29,   0.33,  99.90,  -1.16,
04/11 22Z,   0.20,   2.58,   1.80,  99.90,  -0.98,
04/11 23Z,   0.20,   3.91,   3.11,  99.90,  -1.00,
04/12 00Z,   0.10,   4.76,   4.20,  99.90,  -0.66,
04/12 01Z,   0.10,   5.45,   5.01,  99.90,  -0.54,
04/12 02Z,   0.10,   5.78,   5.44,  99.90,  -0.44,  (max)
04/12 03Z,   0.10,   5.31,   4.99,  99.90,  -0.42,
04/12 04Z,   0.10,   4.29,   4.19,  99.90,  -0.20,
04/12 05Z,   0.10,   3.14,   3.18,  99.90,  -0.06,
04/12 06Z,   0.20,   2.11,   2.19,  99.90,  -0.12,
04/12 07Z,   0.20,   1.37,   1.20,  99.90,  -0.37,
04/12 08Z,   0.20,   0.95,   0.46,  99.90,  -0.69,  (min)
04/12 09Z,   0.20,   1.18,   0.92,  99.90,  -0.46,
04/12 10Z,   0.20,   2.44,   2.56,  99.90,  -0.08,
04/12 11Z,   0.20,   4.12,   3.85,  99.90,  -0.47,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/12 12Z,   0.20,   5.26,  99.90,   5.01,  -0.45,
04/12 13Z,   0.20,   5.94,  99.90,   5.70,  -0.43,
04/12 14Z,   0.20,   6.35,  99.90,   6.14,  -0.42,  (max)
04/12 15Z,   0.20,   6.10,  99.90,   5.90,  -0.40,
04/12 16Z,   0.20,   5.18,  99.90,   5.00,  -0.38,
04/12 17Z,   0.20,   4.06,  99.90,   3.89,  -0.37,
04/12 18Z,   0.30,   2.99,  99.90,   2.94,  -0.35,
04/12 19Z,   0.30,   2.07,  99.90,   2.04,  -0.33,
04/12 20Z,   0.30,   1.31,  99.90,   1.30,  -0.31,
04/12 21Z,   0.40,   0.89,  99.90,   0.99,  -0.30,  (min)
04/12 22Z,   0.40,   1.39,  99.90,   1.51,  -0.28,
04/12 23Z,   0.40,   2.78,  99.90,   2.92,  -0.26,
04/13 00Z,   0.40,   4.12,  99.90,   4.26,  -0.26,
04/13 01Z,   0.50,   5.02,  99.90,   5.26,  -0.26,
04/13 02Z,   0.50,   5.75,  99.90,   5.99,  -0.26,
04/13 03Z,   0.50,   6.00,  99.90,   6.24,  -0.26,  (max)
04/13 04Z,   0.60,   5.42,  99.90,   5.76,  -0.26,
04/13 05Z,   0.60,   4.35,  99.90,   4.68,  -0.26,
04/13 06Z,   0.60,   3.20,  99.90,   3.53,  -0.26,
04/13 07Z,   0.60,   2.18,  99.90,   2.51,  -0.26,
04/13 08Z,   0.60,   1.39,  99.90,   1.72,  -0.26,
04/13 09Z,   0.60,   0.89,  99.90,   1.23,  -0.26,  (min)
04/13 10Z,   0.60,   1.15,  99.90,   1.48,  -0.26,
04/13 11Z,   0.60,   2.49,  99.90,   2.83,  -0.26,
04/13 12Z,   0.60,   4.15,  99.90,   4.49,  -0.26,
04/13 13Z,   0.60,   5.29,  99.90,   5.62,  -0.26,
04/13 14Z,   0.60,   6.03,  99.90,   6.37,  -0.26,
04/13 15Z,   0.60,   6.44,  99.90,   6.77,  -0.26,  (max)
04/13 16Z,   0.60,   6.09,  99.90,   6.42,  -0.26,
04/13 17Z,   0.60,   5.11,  99.90,   5.45,  -0.26,
04/13 18Z,   0.50,   3.98,  99.90,   4.22,  -0.26,
04/13 19Z,   0.50,   2.91,  99.90,   3.15,  -0.26,
04/13 20Z,   0.50,   1.98,  99.90,   2.21,  -0.26,
04/13 21Z,   0.40,   1.19,  99.90,   1.32,  -0.26,
04/13 22Z,   0.40,   0.82,  99.90,   0.96,  -0.26,  (min)
04/13 23Z,   0.40,   1.51,  99.90,   1.65,  -0.26,
04/14 00Z,   0.30,   3.06,  99.90,   3.10,  -0.26,
04/14 01Z,   0.30,   4.45,  99.90,   4.49,  -0.26,
04/14 02Z,   0.20,   5.41,  99.90,   5.35,  -0.26,
04/14 03Z,   0.20,   6.14,  99.90,   6.08,  -0.26,
04/14 04Z,   0.20,   6.25,  99.90,   6.19,  -0.26,  (max)
04/14 05Z,   0.10,   5.53,  99.90,   5.36,  -0.26,
04/14 06Z,   0.10,   4.40,  99.90,   4.24,  -0.26,
04/14 07Z,   0.10,   3.25,  99.90,   3.08,  -0.26,
04/14 08Z,   0.10,   2.21,  99.90,   2.04,  -0.26,
04/14 09Z,   0.00,   1.35,  99.90,   1.08,  -0.26,
04/14 10Z,   0.00,   0.79,  99.90,   0.52,  -0.26,  (min)
04/14 11Z,   0.00,   1.10,  99.90,   0.84,  -0.26,
04/14 12Z,   0.00,   2.55,  99.90,   2.29,  -0.26,
04/14 13Z,   0.00,   4.23,  99.90,   3.97,  -0.26,
04/14 14Z,   0.00,   5.38,  99.90,   5.12,  -0.26,
04/14 15Z,   0.00,   6.17,  99.90,   5.91,  -0.26,
04/14 16Z,   0.00,   6.51,  99.90,   6.25,  -0.26,  (max)
04/14 17Z,   0.00,   6.02,  99.90,   5.76,  -0.26,
04/14 18Z,   0.00,   4.98,  99.90,   4.71,  -0.26,
04/14 19Z,   0.00,   3.84,  99.90,   3.58,  -0.26,
04/14 20Z,   0.00,   2.77,  99.90,   2.51,  -0.26,
04/14 21Z,   0.00,   1.83,  99.90,   1.56,  -0.26,
04/14 22Z,   0.00,   1.03,  99.90,   0.76,  -0.26,
04/14 23Z,   0.00,   0.79,  99.90,   0.52,  -0.26,  (min)
04/15 00Z,   0.00,   1.74,  99.90,   1.47,  -0.26,
04/15 01Z,   0.00,   3.46,  99.90,   3.19,  -0.26,
04/15 02Z,   0.10,   4.90,  99.90,   4.74,  -0.26,
04/15 03Z,   0.10,   5.90,  99.90,   5.74,  -0.26,
04/15 04Z,   0.10,   6.56,  99.90,   6.40,  -0.26,  (max)
04/15 05Z,   0.10,   6.47,  99.90,   6.30,  -0.26,
04/15 06Z,   0.10,   5.59,  99.90,   5.42,  -0.26,
04/15 07Z,   0.10,   4.42,  99.90,   4.25,  -0.26,
04/15 08Z,   0.10,   3.25,  99.90,   3.09,  -0.26,
04/15 09Z,   0.10,   2.18,  99.90,   2.02,  -0.26,
04/15 10Z,   0.10,   1.24,  99.90,   1.08,  -0.26,
04/15 11Z,   0.10,   0.65,  99.90,   0.49,  -0.26,  (min)
04/15 12Z,   0.10,   1.09,  99.90,   0.93,  -0.26,
04/15 13Z,   0.10,   2.67,  99.90,   2.51,  -0.26,
04/15 14Z,   0.10,   4.37,  99.90,   4.21,  -0.26,
04/15 15Z,   0.10,   5.53,  99.90,   5.37,  -0.26,
04/15 16Z,   0.10,   6.32,  99.90,   6.16,  -0.26,
04/15 17Z,   0.10,   6.53,  99.90,   6.36,  -0.26,  (max)
04/15 18Z,   0.10,   5.88,  99.90,   5.71,  -0.26,
04/15 19Z,   0.10,   4.77,  99.90,   4.61,  -0.26,
04/15 20Z,   0.10,   3.63,  99.90,   3.47,  -0.26,
04/15 21Z,   0.10,   2.58,  99.90,   2.41,  -0.26,
04/15 22Z,   0.10,   1.63,  99.90,   1.47,  -0.26,
04/15 23Z,   0.10,   0.87,  99.90,   0.71,  -0.26,  (min)
04/16 00Z,   0.20,   0.83,  99.90,   0.77,  -0.26,