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 : 04/22/2026 14:22:42 GMT (units in feet MHHW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 18Z,   0.20,  -0.19,   0.09,  99.90,   0.08,
04/20 19Z,   0.20,  -0.43,  -0.30,  99.90,  -0.07,  (max)
04/20 20Z,   0.30,  -1.91,  -1.77,  99.90,  -0.16,
04/20 21Z,   0.30,  -4.16,  -3.99,  99.90,  -0.13,
04/20 22Z,   0.30,  -6.68,  -6.52,  99.90,  -0.14,
04/20 23Z,   0.40,  -8.95,  -8.78,  99.90,  -0.23,
04/21 00Z,   0.40, -10.27, -10.06,  99.90,  -0.19,  (min)
04/21 01Z,   0.40,  -9.94,  -9.47,  99.90,   0.07,
04/21 02Z,   0.40,  -8.05,  -7.43,  99.90,   0.22,
04/21 03Z,   0.40,  -5.43,  -4.98,  99.90,   0.05,
04/21 04Z,   0.40,  -2.73,  -2.30,  99.90,   0.03,
04/21 05Z,   0.40,  -0.37,   0.18,  99.90,   0.15,
04/21 06Z,   0.40,   1.06,   1.34,  99.90,  -0.12,  (max)
04/21 07Z,   0.40,   1.06,   1.15,  99.90,  -0.31,
04/21 08Z,   0.50,  -0.33,  -0.31,  99.90,  -0.48,
04/21 09Z,   0.50,  -2.70,  -2.59,  99.90,  -0.39,
04/21 10Z,   0.50,  -5.54,  -5.35,  99.90,  -0.31,
04/21 11Z,   0.50,  -8.37,  -8.23,  99.90,  -0.36,
04/21 12Z,   0.40, -10.60, -10.53,  99.90,  -0.33,
04/21 13Z,   0.40, -11.47, -11.27,  99.90,  -0.20,  (min)
04/21 14Z,   0.40, -10.60, -10.16,  99.90,   0.04,
04/21 15Z,   0.40,  -8.57,  -8.31,  99.90,  -0.14,
04/21 16Z,   0.40,  -6.11,  -5.96,  99.90,  -0.25,
04/21 17Z,   0.40,  -3.60,  -3.28,  99.90,  -0.08,
04/21 18Z,   0.30,  -1.52,  -1.20,  99.90,   0.02,
04/21 19Z,   0.30,  -0.53,  -0.33,  99.90,  -0.10,  (max)
04/21 20Z,   0.30,  -0.87,  -0.77,  99.90,  -0.20,
04/21 21Z,   0.40,  -2.31,  -2.23,  99.90,  -0.32,
04/21 22Z,   0.30,  -4.43,  -4.26,  99.90,  -0.13,
04/21 23Z,   0.30,  -6.76,  -6.72,  99.90,  -0.26,
04/22 00Z,   0.10,  -8.84,  -8.87,  99.90,  -0.13,
04/22 01Z,   0.10,  -9.94, -10.00,  99.90,  -0.16,  (min)
04/22 02Z,   0.00,  -9.46,  -9.18,  99.90,   0.28,
04/22 03Z,   0.00,  -7.60,  -7.37,  99.90,   0.23,
04/22 04Z,   0.00,  -5.18,  -4.99,  99.90,   0.19,
04/22 05Z,   0.00,  -2.70,  -2.47,  99.90,   0.23,
04/22 06Z,   0.00,  -0.52,  -0.29,  99.90,   0.23,
04/22 07Z,   0.00,   0.72,   0.96,  99.90,   0.24,  (max)
04/22 08Z,   0.00,   0.63,   0.75,  99.90,   0.12,
04/22 09Z,   0.00,  -0.73,  -0.65,  99.90,   0.08,
04/22 10Z,   0.00,  -2.96,  -2.84,  99.90,   0.12,
04/22 11Z,   0.10,  -5.60,  -5.58,  99.90,  -0.08,
04/22 12Z,   0.10,  -8.22,  -8.04,  99.90,   0.08,
04/22 13Z,   0.10, -10.27, -10.13,  99.90,   0.04,
04/22 14Z,   0.10, -10.98, -10.64,  99.90,   0.24,  (min)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/22 15Z,   0.10, -10.12,  99.90,  -9.80,   0.22,
04/22 16Z,   0.10,  -8.28,  99.90,  -7.98,   0.20,
04/22 17Z,   0.10,  -6.05,  99.90,  -5.77,   0.18,
04/22 18Z,   0.10,  -3.72,  99.90,  -3.46,   0.16,
04/22 19Z,   0.10,  -1.80,  99.90,  -1.56,   0.14,
04/22 20Z,   0.10,  -0.91,  99.90,  -0.68,   0.12,  (max)
04/22 21Z,   0.20,  -1.23,  99.90,  -0.93,   0.10,
04/22 22Z,   0.20,  -2.55,  99.90,  -2.27,   0.08,
04/22 23Z,   0.20,  -4.48,  99.90,  -4.22,   0.06,
04/23 00Z,   0.20,  -6.63,  99.90,  -6.38,   0.04,
04/23 01Z,   0.20,  -8.55,  99.90,  -8.33,   0.02,
04/23 02Z,   0.20,  -9.54,  99.90,  -9.34,   0.00,  (min)
04/23 03Z,   0.20,  -9.05,  99.90,  -8.85,   0.00,
04/23 04Z,   0.20,  -7.38,  99.90,  -7.18,   0.00,
04/23 05Z,   0.20,  -5.22,  99.90,  -5.02,   0.00,
04/23 06Z,   0.10,  -2.95,  99.90,  -2.85,   0.00,
04/23 07Z,   0.20,  -0.92,  99.90,  -0.72,   0.00,
04/23 08Z,   0.20,   0.24,  99.90,   0.45,   0.00,  (max)
04/23 09Z,   0.20,   0.17,  99.90,   0.37,   0.00,
04/23 10Z,   0.30,  -1.04,  99.90,  -0.74,   0.00,
04/23 11Z,   0.30,  -3.04,  99.90,  -2.74,   0.00,
04/23 12Z,   0.30,  -5.44,  99.90,  -5.14,   0.00,
04/23 13Z,   0.30,  -7.88,  99.90,  -7.58,   0.00,
04/23 14Z,   0.30,  -9.81,  99.90,  -9.51,   0.00,
04/23 15Z,   0.30, -10.48,  99.90, -10.17,   0.00,  (min)
04/23 16Z,   0.30,  -9.73,  99.90,  -9.43,   0.00,
04/23 17Z,   0.20,  -8.14,  99.90,  -7.93,   0.00,
04/23 18Z,   0.30,  -6.13,  99.90,  -5.82,   0.00,
04/23 19Z,   0.30,  -3.93,  99.90,  -3.63,   0.00,
04/23 20Z,   0.40,  -2.09,  99.90,  -1.69,   0.00,
04/23 21Z,   0.40,  -1.21,  99.90,  -0.80,   0.00,  (max)
04/23 22Z,   0.40,  -1.44,  99.90,  -1.04,   0.00,
04/23 23Z,   0.50,  -2.59,  99.90,  -2.09,   0.00,
04/24 00Z,   0.50,  -4.33,  99.90,  -3.82,   0.00,
04/24 01Z,   0.50,  -6.33,  99.90,  -5.83,   0.00,
04/24 02Z,   0.50,  -8.20,  99.90,  -7.70,   0.00,
04/24 03Z,   0.50,  -9.19,  99.90,  -8.69,   0.00,  (min)
04/24 04Z,   0.40,  -8.82,  99.90,  -8.41,   0.00,
04/24 05Z,   0.40,  -7.40,  99.90,  -7.00,   0.00,
04/24 06Z,   0.40,  -5.51,  99.90,  -5.11,   0.00,
04/24 07Z,   0.40,  -3.40,  99.90,  -3.00,   0.00,
04/24 08Z,   0.50,  -1.43,  99.90,  -0.93,   0.00,
04/24 09Z,   0.60,  -0.26,  99.90,   0.35,   0.00,
04/24 10Z,   0.60,  -0.22,  99.90,   0.38,   0.00,  (max)
04/24 11Z,   0.70,  -1.23,  99.90,  -0.52,   0.00,
04/24 12Z,   0.70,  -2.97,  99.90,  -2.27,   0.00,
04/24 13Z,   0.70,  -5.16,  99.90,  -4.46,   0.00,
04/24 14Z,   0.70,  -7.49,  99.90,  -6.79,   0.00,
04/24 15Z,   0.70,  -9.37,  99.90,  -8.67,   0.00,
04/24 16Z,   0.60, -10.07,  99.90,  -9.46,   0.00,  (min)
04/24 17Z,   0.60,  -9.48,  99.90,  -8.88,   0.00,
04/24 18Z,   0.50,  -8.12,  99.90,  -7.61,   0.00,
04/24 19Z,   0.50,  -6.25,  99.90,  -5.75,   0.00,
04/24 20Z,   0.50,  -4.10,  99.90,  -3.60,   0.00,
04/24 21Z,   0.50,  -2.27,  99.90,  -1.76,   0.00,
04/24 22Z,   0.50,  -1.33,  99.90,  -0.83,   0.00,  (max)
04/24 23Z,   0.50,  -1.45,  99.90,  -0.94,   0.00,
04/25 00Z,   0.50,  -2.44,  99.90,  -1.93,   0.00,
04/25 01Z,   0.50,  -4.04,  99.90,  -3.53,   0.00,
04/25 02Z,   0.50,  -6.00,  99.90,  -5.50,   0.00,
04/25 03Z,   0.50,  -7.91,  99.90,  -7.41,   0.00,
04/25 04Z,   0.40,  -8.99,  99.90,  -8.59,   0.00,  (min)
04/25 05Z,   0.40,  -8.79,  99.90,  -8.39,   0.00,
04/25 06Z,   0.40,  -7.64,  99.90,  -7.24,   0.00,
04/25 07Z,   0.40,  -5.96,  99.90,  -5.55,   0.00,
04/25 08Z,   0.40,  -3.91,  99.90,  -3.50,   0.00,
04/25 09Z,   0.30,  -1.92,  99.90,  -1.62,   0.00,
04/25 10Z,   0.40,  -0.67,  99.90,  -0.27,   0.00,
04/25 11Z,   0.40,  -0.49,  99.90,  -0.08,   0.00,  (max)
04/25 12Z,   0.40,  -1.28,  99.90,  -0.88,   0.00,
04/25 13Z,   0.40,  -2.82,  99.90,  -2.42,   0.00,
04/25 14Z,   0.40,  -4.88,  99.90,  -4.48,   0.00,
04/25 15Z,   0.50,  -7.18,  99.90,  -6.67,   0.00,
04/25 16Z,   0.50,  -9.06,  99.90,  -8.56,   0.00,
04/25 17Z,   0.50,  -9.81,  99.90,  -9.31,   0.00,  (min)
04/25 18Z,   0.50,  -9.37,  99.90,  -8.87,   0.00,
04/25 19Z,   0.50,  -8.15,  99.90,  -7.64,   0.00,
04/25 20Z,   0.50,  -6.32,  99.90,  -5.81,   0.00,
04/25 21Z,   0.40,  -4.13,  99.90,  -3.73,   0.00,
04/25 22Z,   0.40,  -2.25,  99.90,  -1.85,   0.00,
04/25 23Z,   0.40,  -1.26,  99.90,  -0.85,   0.00,  (max)
04/26 00Z,   0.40,  -1.28,  99.90,  -0.87,   0.00,
04/26 01Z,   0.40,  -2.17,  99.90,  -1.77,   0.00,
04/26 02Z,   0.30,  -3.73,  99.90,  -3.43,   0.00,
04/26 03Z,   0.30,  -5.77,  99.90,  -5.46,   0.00,
04/26 04Z,   0.30,  -7.79,  99.90,  -7.49,   0.00,
04/26 05Z,   0.30,  -9.00,  99.90,  -8.69,   0.00,  (min)
04/26 06Z,   0.30,  -8.97,  99.90,  -8.66,   0.00,