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
Atlantic City, NJ
Cape May, NJ
Philadelphia, PA
Reedy Pnt, DE
Lewes, DE
Ocean City, MD
Wachapreague
Kiptopeke, VA
Cambridge, MD
Baltimore, MD
Annapolis, MD
Solomons Is, MD
Washington DC
Colonial Beach
Lewisetta, VA
Gloucester Pnt
Hampton Road
Portsmouth, VA
CBBT, VA
Duck Pier, NC
Cape Hatteras NC
Surge List
East Coast
#Philadelphia, PA : 07/10/2025 15:22:05 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/09 00Z,   0.50,   1.18,   1.45,  99.90,  -0.23,  (min)
07/09 01Z,   0.50,   2.61,   2.89,  99.90,  -0.22,
07/09 02Z,   0.50,   4.24,   4.97,  99.90,   0.23,
07/09 03Z,   0.50,   5.46,   6.26,  99.90,   0.30,
07/09 04Z,   0.40,   6.46,   7.20,  99.90,   0.34,
07/09 05Z,   0.40,   7.01,   7.71,  99.90,   0.30,  (max)
07/09 06Z,   0.60,   6.70,   7.00,  99.90,  -0.30,
07/09 07Z,   0.60,   5.82,   5.77,  99.90,  -0.65,
07/09 08Z,   0.50,   4.77,   4.63,  99.90,  -0.64,
07/09 09Z,   0.50,   3.67,   3.58,  99.90,  -0.59,
07/09 10Z,   0.50,   2.54,   2.48,  99.90,  -0.56,
07/09 11Z,   0.50,   1.39,   1.44,  99.90,  -0.45,
07/09 12Z,   0.30,   0.72,   0.68,  99.90,  -0.34,  (min)
07/09 13Z,   0.30,   1.20,   1.23,  99.90,  -0.27,
07/09 14Z,   0.40,   2.45,   3.05,  99.90,   0.20,
07/09 15Z,   0.40,   3.61,   4.35,  99.90,   0.34,
07/09 16Z,   0.40,   4.63,   5.34,  99.90,   0.31,
07/09 17Z,   0.40,   5.48,   6.02,  99.90,   0.14,  (max)
07/09 18Z,   0.40,   5.62,   6.01,  99.90,  -0.01,
07/09 19Z,   0.40,   4.97,   5.13,  99.90,  -0.24,
07/09 20Z,   0.40,   3.99,   4.05,  99.90,  -0.34,
07/09 21Z,   0.40,   2.96,   2.98,  99.90,  -0.38,
07/09 22Z,   0.50,   2.02,   1.91,  99.90,  -0.61,
07/09 23Z,   0.50,   1.23,   0.94,  99.90,  -0.79,
07/10 00Z,   0.50,   0.82,   0.45,  99.90,  -0.87,  (min)
07/10 01Z,   0.50,   1.45,   2.41,  99.90,   0.46,
07/10 02Z,   0.60,   3.11,   4.19,  99.90,   0.48,
07/10 03Z,   0.60,   4.75,   5.72,  99.90,   0.37,
07/10 04Z,   0.60,   5.90,   6.88,  99.90,   0.38,
07/10 05Z,   0.60,   6.75,   7.84,  99.90,   0.49,
07/10 06Z,   0.60,   7.04,   7.98,  99.90,   0.34,  (max)
07/10 07Z,   0.60,   6.52,   7.05,  99.90,  -0.07,
07/10 08Z,   0.60,   5.55,   5.85,  99.90,  -0.30,
07/10 09Z,   0.60,   4.49,   4.68,  99.90,  -0.41,
07/10 10Z,   0.60,   3.38,   3.52,  99.90,  -0.46,
07/10 11Z,   0.60,   2.24,   2.39,  99.90,  -0.45,
07/10 12Z,   0.60,   1.13,   1.38,  99.90,  -0.35,
07/10 13Z,   0.60,   0.69,   0.67,  99.90,  -0.62,  (min)
07/10 14Z,   0.60,   1.48,   1.87,  99.90,  -0.21,
07/10 15Z,   0.60,   2.87,   3.71,  99.90,   0.24,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/10 16Z,   0.60,   4.01,  99.90,   4.83,   0.21,
07/10 17Z,   0.60,   4.95,  99.90,   5.73,   0.18,
07/10 18Z,   0.60,   5.61,  99.90,   6.36,   0.15,  (max)
07/10 19Z,   0.60,   5.50,  99.90,   6.22,   0.12,
07/10 20Z,   0.60,   4.72,  99.90,   5.41,   0.09,
07/10 21Z,   0.60,   3.71,  99.90,   4.37,   0.06,
07/10 22Z,   0.60,   2.71,  99.90,   3.33,   0.03,
07/10 23Z,   0.60,   1.80,  99.90,   2.40,  -0.01,
07/11 00Z,   0.60,   1.06,  99.90,   1.63,  -0.04,
07/11 01Z,   0.60,   0.85,  99.90,   1.38,  -0.07,  (min)
07/11 02Z,   0.60,   1.80,  99.90,   2.30,  -0.10,
07/11 03Z,   0.60,   3.65,  99.90,   4.12,  -0.13,
07/11 04Z,   0.70,   5.27,  99.90,   5.84,  -0.13,
07/11 05Z,   0.70,   6.30,  99.90,   6.88,  -0.13,
07/11 06Z,   0.70,   6.97,  99.90,   7.54,  -0.13,
07/11 07Z,   0.70,   6.98,  99.90,   7.55,  -0.13,  (max)
07/11 08Z,   0.70,   6.24,  99.90,   6.81,  -0.13,
07/11 09Z,   0.70,   5.20,  99.90,   5.77,  -0.13,
07/11 10Z,   0.70,   4.12,  99.90,   4.69,  -0.13,
07/11 11Z,   0.70,   3.01,  99.90,   3.58,  -0.13,
07/11 12Z,   0.70,   1.87,  99.90,   2.44,  -0.13,
07/11 13Z,   0.70,   0.88,  99.90,   1.45,  -0.13,
07/11 14Z,   0.70,   0.75,  99.90,   1.32,  -0.13,  (min)
07/11 15Z,   0.70,   1.86,  99.90,   2.43,  -0.13,
07/11 16Z,   0.70,   3.35,  99.90,   3.92,  -0.13,
07/11 17Z,   0.70,   4.45,  99.90,   5.02,  -0.13,
07/11 18Z,   0.70,   5.27,  99.90,   5.84,  -0.13,
07/11 19Z,   0.70,   5.70,  99.90,   6.27,  -0.13,  (max)
07/11 20Z,   0.70,   5.34,  99.90,   5.91,  -0.13,
07/11 21Z,   0.70,   4.44,  99.90,   5.01,  -0.13,
07/11 22Z,   0.70,   3.42,  99.90,   3.99,  -0.13,
07/11 23Z,   0.70,   2.43,  99.90,   3.00,  -0.13,
07/12 00Z,   0.70,   1.56,  99.90,   2.13,  -0.13,
07/12 01Z,   0.70,   0.91,  99.90,   1.48,  -0.13,  (min)
07/12 02Z,   0.70,   0.94,  99.90,   1.51,  -0.13,
07/12 03Z,   0.80,   2.22,  99.90,   2.89,  -0.13,
07/12 04Z,   0.80,   4.21,  99.90,   4.88,  -0.13,
07/12 05Z,   0.80,   5.75,  99.90,   6.42,  -0.13,
07/12 06Z,   0.80,   6.64,  99.90,   7.31,  -0.13,
07/12 07Z,   0.80,   7.08,  99.90,   7.75,  -0.13,  (max)
07/12 08Z,   0.80,   6.82,  99.90,   7.49,  -0.13,
07/12 09Z,   0.80,   5.90,  99.90,   6.57,  -0.13,
07/12 10Z,   0.80,   4.80,  99.90,   5.47,  -0.13,
07/12 11Z,   0.80,   3.68,  99.90,   4.35,  -0.13,
07/12 12Z,   0.80,   2.57,  99.90,   3.24,  -0.13,
07/12 13Z,   0.80,   1.47,  99.90,   2.14,  -0.13,
07/12 14Z,   0.80,   0.67,  99.90,   1.34,  -0.13,  (min)
07/12 15Z,   0.80,   0.91,  99.90,   1.58,  -0.13,
07/12 16Z,   0.80,   2.32,  99.90,   2.99,  -0.13,
07/12 17Z,   0.80,   3.87,  99.90,   4.54,  -0.13,
07/12 18Z,   0.80,   4.89,  99.90,   5.56,  -0.13,
07/12 19Z,   0.80,   5.57,  99.90,   6.24,  -0.13,
07/12 20Z,   0.80,   5.75,  99.90,   6.42,  -0.13,  (max)
07/12 21Z,   0.80,   5.17,  99.90,   5.84,  -0.13,
07/12 22Z,   0.80,   4.18,  99.90,   4.85,  -0.13,
07/12 23Z,   0.80,   3.14,  99.90,   3.81,  -0.13,
07/13 00Z,   0.80,   2.16,  99.90,   2.83,  -0.13,
07/13 01Z,   0.80,   1.33,  99.90,   2.00,  -0.13,
07/13 02Z,   0.80,   0.80,  99.90,   1.47,  -0.13,  (min)
07/13 03Z,   0.90,   1.09,  99.90,   1.86,  -0.13,
07/13 04Z,   0.90,   2.67,  99.90,   3.44,  -0.13,
07/13 05Z,   0.90,   4.72,  99.90,   5.50,  -0.13,
07/13 06Z,   0.90,   6.14,  99.90,   6.91,  -0.13,
07/13 07Z,   0.90,   6.86,  99.90,   7.63,  -0.13,
07/13 08Z,   0.90,   7.09,  99.90,   7.86,  -0.13,  (max)
07/13 09Z,   0.90,   6.57,  99.90,   7.34,  -0.13,
07/13 10Z,   0.90,   5.50,  99.90,   6.27,  -0.13,
07/13 11Z,   0.90,   4.34,  99.90,   5.11,  -0.13,
07/13 12Z,   0.90,   3.19,  99.90,   3.96,  -0.13,
07/13 13Z,   0.90,   2.08,  99.90,   2.86,  -0.13,
07/13 14Z,   0.90,   1.07,  99.90,   1.84,  -0.13,
07/13 15Z,   0.90,   0.53,  99.90,   1.30,  -0.13,  (min)
07/13 16Z,   0.90,   1.16,  99.90,   1.93,  -0.13,
07/13 17Z,   0.90,   2.84,  99.90,   3.61,  -0.13,
07/13 18Z,   0.90,   4.39,  99.90,   5.16,  -0.13,
07/13 19Z,   0.90,   5.31,  99.90,   6.08,  -0.13,
07/13 20Z,   0.90,   5.84,  99.90,   6.61,  -0.13,  (max)
07/13 21Z,   0.90,   5.78,  99.90,   6.55,  -0.13,
07/13 22Z,   0.90,   5.01,  99.90,   5.78,  -0.13,
07/13 23Z,   0.90,   3.95,  99.90,   4.72,  -0.13,
07/14 00Z,   0.90,   2.89,  99.90,   3.66,  -0.13,
07/14 01Z,   0.90,   1.92,  99.90,   2.69,  -0.13,
07/14 02Z,   0.90,   1.14,  99.90,   1.91,  -0.13,
07/14 03Z,   0.90,   0.73,  99.90,   1.50,  -0.13,  (min)
07/14 04Z,   1.00,   1.30,  99.90,   2.17,  -0.13,
07/14 05Z,   1.00,   3.11,  99.90,   3.98,  -0.13,
07/14 06Z,   1.00,   5.14,  99.90,   6.01,  -0.13,
07/14 07Z,  99.90,   6.40,  99.90,  99.90,  -0.13,
07/14 08Z,  99.90,   6.96,  99.90,  99.90,  -0.13,
07/14 09Z,  99.90,   6.98,  99.90,  99.90,  -0.13,
07/14 10Z,  99.90,   6.25,  99.90,  99.90,  -0.13,
07/14 11Z,  99.90,   5.06,  99.90,  99.90,  -0.13,
07/14 12Z,  99.90,   3.85,  99.90,  99.90,  -0.13,