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 : 05/18/2026 06:21:50 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/16 12Z,   0.00,   3.75,   3.75,  99.90,   0.00,
05/16 13Z,   0.00,   6.46,   6.56,  99.90,   0.10,
05/16 14Z,   0.00,   8.84,   9.00,  99.90,   0.16,
05/16 15Z,   0.00,  10.17,  10.25,  99.90,   0.08,  (max)
05/16 16Z,   0.00,  10.08,   9.90,  99.90,  -0.18,
05/16 17Z,   0.00,   8.72,   8.60,  99.90,  -0.12,
05/16 18Z,   0.00,   6.52,   6.42,  99.90,  -0.10,
05/16 19Z,   0.00,   3.98,   3.90,  99.90,  -0.08,
05/16 20Z,   0.00,   1.58,   1.50,  99.90,  -0.08,
05/16 21Z,   0.00,   0.05,  -0.03,  99.90,  -0.08,  (min)
05/16 22Z,  -0.10,   0.15,   0.22,  99.90,   0.17,
05/16 23Z,  -0.20,   1.90,   2.31,  99.90,   0.61,
05/17 00Z,  -0.20,   4.53,   4.69,  99.90,   0.36,
05/17 01Z,  -0.20,   7.37,   7.51,  99.90,   0.34,
05/17 02Z,  -0.20,   9.96,  10.24,  99.90,   0.48,
05/17 03Z,  -0.30,  11.61,  11.67,  99.90,   0.36,
05/17 04Z,  -0.30,  11.79,  11.70,  99.90,   0.21,  (max)
05/17 05Z,  -0.30,  10.49,  10.37,  99.90,   0.18,
05/17 06Z,  -0.20,   8.10,   8.02,  99.90,   0.12,
05/17 07Z,  -0.20,   5.13,   5.12,  99.90,   0.19,
05/17 08Z,  -0.20,   2.08,   2.08,  99.90,   0.20,
05/17 09Z,  -0.20,  -0.43,  -0.49,  99.90,   0.14,
05/17 10Z,  -0.10,  -1.55,  -1.52,  99.90,   0.13,  (min)
05/17 11Z,  -0.20,  -0.80,  -0.47,  99.90,   0.53,
05/17 12Z,   0.00,   1.29,   1.51,  99.90,   0.22,
05/17 13Z,  -0.10,   3.98,   4.10,  99.90,   0.22,
05/17 14Z,  -0.10,   6.78,   6.92,  99.90,   0.24,
05/17 15Z,  -0.10,   9.13,   9.21,  99.90,   0.18,
05/17 16Z,  -0.10,  10.31,  10.28,  99.90,   0.07,  (max)
05/17 17Z,   0.00,  10.04,   9.79,  99.90,  -0.25,
05/17 18Z,   0.00,   8.52,   8.21,  99.90,  -0.31,
05/17 19Z,   0.00,   6.20,   6.03,  99.90,  -0.17,
05/17 20Z,   0.00,   3.60,   3.47,  99.90,  -0.13,
05/17 21Z,   0.00,   1.22,   0.96,  99.90,  -0.26,
05/17 22Z,   0.10,  -0.13,  -0.31,  99.90,  -0.28,  (min)
05/17 23Z,   0.10,   0.27,   0.51,  99.90,   0.14,
05/18 00Z,   0.10,   2.27,   2.64,  99.90,   0.27,
05/18 01Z,   0.20,   5.03,   5.41,  99.90,   0.18,
05/18 02Z,   0.20,   7.91,   8.19,  99.90,   0.08,
05/18 03Z,   0.20,  10.44,  10.78,  99.90,   0.14,
05/18 04Z,   0.20,  11.92,  12.06,  99.90,  -0.06,  (max)
05/18 05Z,   0.20,  11.86,  11.83,  99.90,  -0.23,
05/18 06Z,   0.20,  10.34,  10.16,  99.90,  -0.38,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/18 07Z,   0.20,   7.79,  99.90,   7.64,  -0.35,
05/18 08Z,   0.20,   4.71,  99.90,   4.60,  -0.31,
05/18 09Z,   0.20,   1.63,  99.90,   1.55,  -0.28,
05/18 10Z,   0.30,  -0.79,  99.90,  -0.73,  -0.25,
05/18 11Z,   0.30,  -1.67,  99.90,  -1.58,  -0.21,  (min)
05/18 12Z,   0.40,  -0.69,  99.90,  -0.47,  -0.18,
05/18 13Z,   0.40,   1.52,  99.90,   1.78,  -0.14,
05/18 14Z,   0.50,   4.25,  99.90,   4.64,  -0.11,
05/18 15Z,   0.50,   7.05,  99.90,   7.47,  -0.08,
05/18 16Z,   0.50,   9.29,  99.90,   9.75,  -0.04,
05/18 17Z,   0.50,  10.31,  99.90,  10.80,  -0.01,  (max)
05/18 18Z,   0.50,   9.88,  99.90,  10.40,   0.03,
05/18 19Z,   0.50,   8.25,  99.90,   8.78,   0.03,
05/18 20Z,   0.50,   5.90,  99.90,   6.42,   0.03,
05/18 21Z,   0.50,   3.30,  99.90,   3.82,   0.03,
05/18 22Z,   0.60,   1.01,  99.90,   1.64,   0.03,
05/18 23Z,   0.60,  -0.12,  99.90,   0.50,   0.03,  (min)
05/19 00Z,   0.50,   0.53,  99.90,   1.05,   0.03,
05/19 01Z,   0.40,   2.65,  99.90,   3.08,   0.03,
05/19 02Z,   0.50,   5.41,  99.90,   5.94,   0.03,
05/19 03Z,   0.40,   8.25,  99.90,   8.67,   0.03,
05/19 04Z,   0.30,  10.66,  99.90,  10.98,   0.03,
05/19 05Z,   0.20,  11.94,  99.90,  12.17,   0.03,  (max)
05/19 06Z,   0.20,  11.70,  99.90,  11.92,   0.03,
05/19 07Z,   0.30,  10.06,  99.90,  10.39,   0.03,
05/19 08Z,   0.30,   7.46,  99.90,   7.78,   0.03,
05/19 09Z,   0.20,   4.40,  99.90,   4.62,   0.03,
05/19 10Z,   0.20,   1.38,  99.90,   1.61,   0.03,
05/19 11Z,   0.20,  -0.87,  99.90,  -0.65,   0.03,
05/19 12Z,   0.20,  -1.52,  99.90,  -1.29,   0.03,  (min)
05/19 13Z,   0.20,  -0.39,  99.90,  -0.16,   0.03,
05/19 14Z,   0.20,   1.83,  99.90,   2.06,   0.03,
05/19 15Z,   0.20,   4.51,  99.90,   4.73,   0.03,
05/19 16Z,   0.20,   7.22,  99.90,   7.44,   0.03,
05/19 17Z,   0.10,   9.32,  99.90,   9.44,   0.03,
05/19 18Z,   0.10,  10.17,  99.90,  10.30,   0.03,  (max)
05/19 19Z,   0.10,   9.64,  99.90,   9.77,   0.03,
05/19 20Z,   0.10,   7.99,  99.90,   8.11,   0.03,
05/19 21Z,   0.10,   5.66,  99.90,   5.79,   0.03,
05/19 22Z,   0.20,   3.13,  99.90,   3.36,   0.03,
05/19 23Z,   0.20,   0.98,  99.90,   1.21,   0.03,
05/20 00Z,   0.00,   0.04,  99.90,   0.07,   0.03,  (min)
05/20 01Z,   0.10,   0.85,  99.90,   0.98,   0.03,
05/20 02Z,   0.10,   2.98,  99.90,   3.10,   0.03,
05/20 03Z,   0.10,   5.63,  99.90,   5.75,   0.03,
05/20 04Z,   0.00,   8.34,  99.90,   8.36,   0.03,
05/20 05Z,   0.00,  10.60,  99.90,  10.62,   0.03,
05/20 06Z,   0.00,  11.71,  99.90,  11.74,   0.03,  (max)
05/20 07Z,   0.00,  11.36,  99.90,  11.39,   0.03,
05/20 08Z,   0.00,   9.71,  99.90,   9.73,   0.03,
05/20 09Z,   0.10,   7.17,  99.90,   7.30,   0.03,
05/20 10Z,   0.10,   4.22,  99.90,   4.35,   0.03,
05/20 11Z,   0.20,   1.35,  99.90,   1.57,   0.03,
05/20 12Z,   0.20,  -0.71,  99.90,  -0.49,   0.03,
05/20 13Z,   0.20,  -1.16,  99.90,  -0.94,   0.03,  (min)
05/20 14Z,   0.20,   0.02,  99.90,   0.25,   0.03,
05/20 15Z,   0.20,   2.15,  99.90,   2.38,   0.03,
05/20 16Z,   0.20,   4.70,  99.90,   4.93,   0.03,
05/20 17Z,   0.20,   7.29,  99.90,   7.51,   0.03,
05/20 18Z,   0.20,   9.24,  99.90,   9.46,   0.03,
05/20 19Z,   0.20,   9.97,  99.90,  10.20,   0.03,  (max)
05/20 20Z,   0.20,   9.40,  99.90,   9.62,   0.03,
05/20 21Z,   0.20,   7.78,  99.90,   8.01,   0.03,
05/20 22Z,   0.20,   5.55,  99.90,   5.78,   0.03,
05/20 23Z,   0.30,   3.13,  99.90,   3.46,   0.03,
05/21 00Z,   0.30,   1.11,  99.90,   1.44,   0.03,
05/21 01Z,   0.40,   0.32,  99.90,   0.75,   0.03,  (min)
05/21 02Z,   0.20,   1.18,  99.90,   1.41,   0.03,
05/21 03Z,   0.20,   3.19,  99.90,   3.41,   0.03,
05/21 04Z,   0.10,   5.64,  99.90,   5.77,   0.03,
05/21 05Z,   0.10,   8.19,  99.90,   8.31,   0.03,
05/21 06Z,   0.20,  10.30,  99.90,  10.52,   0.03,
05/21 07Z,   0.20,  11.29,  99.90,  11.52,   0.03,  (max)
05/21 08Z,   0.20,  10.91,  99.90,  11.14,   0.03,
05/21 09Z,   0.20,   9.34,  99.90,   9.56,   0.03,
05/21 10Z,   0.30,   6.96,  99.90,   7.28,   0.03,
05/21 11Z,   0.30,   4.19,  99.90,   4.51,   0.03,
05/21 12Z,   0.40,   1.49,  99.90,   1.92,   0.03,
05/21 13Z,   0.40,  -0.37,  99.90,   0.05,   0.03,
05/21 14Z,   0.40,  -0.69,  99.90,  -0.26,   0.03,  (min)
05/21 15Z,   0.40,   0.46,  99.90,   0.89,   0.03,
05/21 16Z,   0.40,   2.44,  99.90,   2.86,   0.03,
05/21 17Z,   0.30,   4.83,  99.90,   5.16,   0.03,
05/21 18Z,   0.30,   7.28,  99.90,   7.61,   0.03,
05/21 19Z,   0.40,   9.11,  99.90,   9.53,   0.03,
05/21 20Z,   0.30,   9.77,  99.90,  10.09,   0.03,  (max)
05/21 21Z,   0.40,   9.20,  99.90,   9.63,   0.03,
05/21 22Z,   0.40,   7.69,  99.90,   8.11,   0.03,
05/21 23Z,   0.50,   5.58,  99.90,   6.11,   0.03,
05/22 00Z,   0.50,   3.27,  99.90,   3.80,   0.03,