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
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
#Boston, MA : 04/19/2026 11:22:49 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/17 12Z,   0.60,  -9.67,  -8.99,  99.90,   0.08,
04/17 13Z,   0.60,  -6.97,  -6.22,  99.90,   0.15,
04/17 14Z,   0.60,  -4.36,  -3.71,  99.90,   0.05,
04/17 15Z,   0.60,  -2.51,  -1.96,  99.90,  -0.05,
04/17 16Z,   0.60,  -2.01,  -1.45,  99.90,  -0.04,  (max)
04/17 17Z,   0.60,  -2.93,  -2.73,  99.90,  -0.40,
04/17 18Z,   0.70,  -4.91,  -4.56,  99.90,  -0.35,
04/17 19Z,   0.70,  -7.47,  -7.10,  99.90,  -0.33,
04/17 20Z,   0.70, -10.11,  -9.47,  99.90,  -0.06,
04/17 21Z,   0.70, -12.22, -11.60,  99.90,  -0.08,
04/17 22Z,   0.70, -12.97, -12.29,  99.90,  -0.02,  (min)
04/17 23Z,   0.70, -11.92, -10.99,  99.90,   0.23,
04/18 00Z,   0.60,  -9.61,  -8.62,  99.90,   0.39,
04/18 01Z,   0.60,  -6.85,  -5.95,  99.90,   0.30,
04/18 02Z,   0.60,  -4.11,  -3.32,  99.90,   0.19,
04/18 03Z,   0.60,  -1.96,  -1.31,  99.90,   0.05,
04/18 04Z,   0.60,  -1.08,  -0.58,  99.90,  -0.10,  (max)
04/18 05Z,   0.60,  -1.73,  -1.37,  99.90,  -0.24,
04/18 06Z,   0.60,  -3.67,  -3.33,  99.90,  -0.26,
04/18 07Z,   0.60,  -6.41,  -6.03,  99.90,  -0.22,
04/18 08Z,   0.70,  -9.41,  -8.87,  99.90,  -0.16,
04/18 09Z,   0.70, -12.14, -11.64,  99.90,  -0.20,
04/18 10Z,   0.70, -13.81, -13.17,  99.90,  -0.06,  (min)
04/18 11Z,   0.80, -13.69, -12.83,  99.90,   0.06,
04/18 12Z,   0.80, -11.93, -11.10,  99.90,   0.03,
04/18 13Z,   0.80,  -9.33,  -8.69,  99.90,  -0.16,
04/18 14Z,   0.80,  -6.50,  -5.82,  99.90,  -0.12,
04/18 15Z,   0.80,  -3.92,  -3.26,  99.90,  -0.14,
04/18 16Z,   0.80,  -2.26,  -2.00,  99.90,  -0.54,
04/18 17Z,   0.80,  -2.05,  -1.83,  99.90,  -0.58,  (max)
04/18 18Z,   0.70,  -3.24,  -3.01,  99.90,  -0.47,
04/18 19Z,   0.80,  -5.43,  -5.09,  99.90,  -0.46,
04/18 20Z,   0.80,  -8.09,  -7.66,  99.90,  -0.37,
04/18 21Z,   0.80, -10.69, -10.22,  99.90,  -0.33,
04/18 22Z,   0.80, -12.58, -11.93,  99.90,  -0.15,
04/18 23Z,   0.80, -12.92, -12.05,  99.90,   0.07,  (min)
04/19 00Z,   0.60, -11.45, -10.09,  99.90,   0.76,
04/19 01Z,   0.60,  -8.88,  -7.58,  99.90,   0.70,
04/19 02Z,   0.60,  -6.00,  -4.77,  99.90,   0.63,
04/19 03Z,   0.60,  -3.30,  -2.22,  99.90,   0.48,
04/19 04Z,   0.50,  -1.37,  -0.43,  99.90,   0.44,
04/19 05Z,   0.50,  -0.83,  -0.05,  99.90,   0.28,  (max)
04/19 06Z,   0.50,  -1.85,  -1.13,  99.90,   0.22,
04/19 07Z,   0.40,  -4.09,  -3.43,  99.90,   0.26,
04/19 08Z,   0.40,  -7.01,  -6.26,  99.90,   0.35,
04/19 09Z,   0.40, -10.07,  -9.34,  99.90,   0.33,
04/19 10Z,   0.40, -12.70, -11.89,  99.90,   0.41,
04/19 11Z,   0.30, -14.09, -13.28,  99.90,   0.51,  (min)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/19 12Z,   0.30, -13.63,  99.90, -12.85,   0.47,
04/19 13Z,   0.30, -11.62,  99.90, -10.89,   0.43,
04/19 14Z,   0.30,  -8.93,  99.90,  -8.23,   0.40,
04/19 15Z,   0.30,  -6.11,  99.90,  -5.46,   0.36,
04/19 16Z,   0.20,  -3.65,  99.90,  -3.14,   0.32,
04/19 17Z,   0.20,  -2.24,  99.90,  -1.76,   0.28,  (max)
04/19 18Z,   0.20,  -2.29,  99.90,  -1.85,   0.24,
04/19 19Z,   0.30,  -3.68,  99.90,  -3.18,   0.20,
04/19 20Z,   0.10,  -5.97,  99.90,  -5.70,   0.16,
04/19 21Z,   0.20,  -8.60,  99.90,  -8.28,   0.12,
04/19 22Z,   0.10, -11.07,  99.90, -10.89,   0.08,
04/19 23Z,   0.20, -12.67,  99.90, -12.43,   0.05,
04/20 00Z,   0.00, -12.63,  99.90, -12.59,   0.05,  (min)
04/20 01Z,   0.00, -10.87,  99.90, -10.83,   0.05,
04/20 02Z,  -0.10,  -8.19,  99.90,  -8.25,   0.05,
04/20 03Z,  -0.20,  -5.35,  99.90,  -5.50,   0.05,
04/20 04Z,  -0.20,  -2.78,  99.90,  -2.94,   0.05,
04/20 05Z,  -0.40,  -1.11,  99.90,  -1.47,   0.05,
04/20 06Z,  -0.30,  -0.89,  99.90,  -1.15,   0.05,  (max)
04/20 07Z,  -0.30,  -2.17,  99.90,  -2.42,   0.05,
04/20 08Z,  -0.30,  -4.55,  99.90,  -4.81,   0.05,
04/20 09Z,  -0.20,  -7.50,  99.90,  -7.66,   0.05,
04/20 10Z,  -0.10, -10.49,  99.90, -10.55,   0.05,
04/20 11Z,  -0.10, -12.94,  99.90, -13.00,   0.05,
04/20 12Z,   0.00, -14.04,  99.90, -14.00,   0.05,  (min)
04/20 13Z,   0.00, -13.31,  99.90, -13.27,   0.05,
04/20 14Z,   0.00, -11.22,  99.90, -11.17,   0.05,
04/20 15Z,   0.00,  -8.58,  99.90,  -8.54,   0.05,
04/20 16Z,  -0.10,  -5.89,  99.90,  -5.94,   0.05,
04/20 17Z,  -0.10,  -3.62,  99.90,  -3.67,   0.05,
04/20 18Z,  -0.10,  -2.44,  99.90,  -2.49,   0.05,  (max)
04/20 19Z,  -0.10,  -2.68,  99.90,  -2.74,   0.05,
04/20 20Z,  -0.10,  -4.16,  99.90,  -4.21,   0.05,
04/20 21Z,  -0.10,  -6.41,  99.90,  -6.47,   0.05,
04/20 22Z,   0.00,  -8.93,  99.90,  -8.88,   0.05,
04/20 23Z,   0.00, -11.20,  99.90, -11.15,   0.05,
04/21 00Z,   0.00, -12.52,  99.90, -12.48,   0.05,  (min)
04/21 01Z,   0.10, -12.19,  99.90, -12.04,   0.05,
04/21 02Z,   0.10, -10.30,  99.90, -10.15,   0.05,
04/21 03Z,   0.10,  -7.68,  99.90,  -7.53,   0.05,
04/21 04Z,   0.20,  -4.98,  99.90,  -4.74,   0.05,
04/21 05Z,   0.10,  -2.62,  99.90,  -2.47,   0.05,
04/21 06Z,   0.10,  -1.19,  99.90,  -1.04,   0.05,
04/21 07Z,   0.10,  -1.19,  99.90,  -1.04,   0.05,  (max)
04/21 08Z,   0.10,  -2.58,  99.90,  -2.43,   0.05,
04/21 09Z,   0.10,  -4.95,  99.90,  -4.81,   0.05,
04/21 10Z,   0.10,  -7.79,  99.90,  -7.65,   0.05,
04/21 11Z,   0.10, -10.62,  99.90, -10.47,   0.05,
04/21 12Z,   0.20, -12.85,  99.90, -12.61,   0.05,
04/21 13Z,   0.20, -13.72,  99.90, -13.47,   0.05,  (min)
04/21 14Z,   0.20, -12.85,  99.90, -12.61,   0.05,
04/21 15Z,   0.20, -10.82,  99.90, -10.58,   0.05,
04/21 16Z,   0.20,  -8.36,  99.90,  -8.12,   0.05,
04/21 17Z,   0.20,  -5.85,  99.90,  -5.60,   0.05,
04/21 18Z,   0.20,  -3.77,  99.90,  -3.53,   0.05,
04/21 19Z,   0.10,  -2.78,  99.90,  -2.63,   0.05,  (max)
04/21 20Z,   0.10,  -3.12,  99.90,  -2.97,   0.05,
04/21 21Z,   0.10,  -4.56,  99.90,  -4.42,   0.05,
04/21 22Z,   0.20,  -6.68,  99.90,  -6.44,   0.05,
04/21 23Z,   0.20,  -9.01,  99.90,  -8.77,   0.05,
04/22 00Z,   0.20, -11.09,  99.90, -10.84,   0.05,
04/22 01Z,   0.20, -12.19,  99.90, -11.95,   0.05,  (min)
04/22 02Z,   0.10, -11.71,  99.90, -11.56,   0.05,
04/22 03Z,   0.10,  -9.85,  99.90,  -9.71,   0.05,
04/22 04Z,   0.10,  -7.43,  99.90,  -7.28,   0.05,
04/22 05Z,   0.10,  -4.95,  99.90,  -4.80,   0.05,
04/22 06Z,   0.10,  -2.77,  99.90,  -2.63,   0.05,
04/22 07Z,   0.10,  -1.53,  99.90,  -1.38,   0.05,
04/22 08Z,   0.20,  -1.62,  99.90,  -1.38,   0.05,  (max)
04/22 09Z,   0.20,  -2.98,  99.90,  -2.74,   0.05,
04/22 10Z,   0.20,  -5.21,  99.90,  -4.97,   0.05,
04/22 11Z,   0.30,  -7.85,  99.90,  -7.50,   0.05,
04/22 12Z,   0.30, -10.47,  99.90, -10.12,   0.05,
04/22 13Z,   0.30, -12.52,  99.90, -12.17,   0.05,
04/22 14Z,   0.30, -13.23,  99.90, -12.89,   0.05,  (min)
04/22 15Z,   0.30, -12.37,  99.90, -12.03,   0.05,
04/22 16Z,   0.20, -10.53,  99.90, -10.29,   0.05,
04/22 17Z,   0.20,  -8.30,  99.90,  -8.06,   0.05,
04/22 18Z,   0.20,  -5.97,  99.90,  -5.73,   0.05,
04/22 19Z,   0.30,  -4.05,  99.90,  -3.71,   0.05,
04/22 20Z,   0.30,  -3.16,  99.90,  -2.81,   0.05,  (max)
04/22 21Z,   0.40,  -3.48,  99.90,  -3.04,   0.05,
04/22 22Z,   0.40,  -4.80,  99.90,  -4.36,   0.05,
04/22 23Z,   0.50,  -6.73,  99.90,  -6.19,   0.05,
04/23 00Z,   0.50,  -8.88,  99.90,  -8.33,   0.05,