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 : 07/11/2025 13:23:47 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/09 18Z,   0.50,  -6.87,  -6.40,  99.90,  -0.03,
07/09 19Z,   0.50,  -8.62,  -8.05,  99.90,   0.07,
07/09 20Z,   0.50, -10.19,  -9.73,  99.90,  -0.04,
07/09 21Z,   0.50, -10.85, -10.52,  99.90,  -0.17,  (min)
07/09 22Z,   0.50, -10.27,  -9.84,  99.90,  -0.07,
07/09 23Z,   0.50,  -8.88,  -8.47,  99.90,  -0.09,
07/10 00Z,   0.40,  -7.10,  -6.57,  99.90,   0.13,
07/10 01Z,   0.40,  -5.13,  -4.79,  99.90,  -0.06,
07/10 02Z,   0.40,  -3.42,  -3.01,  99.90,   0.01,
07/10 03Z,   0.40,  -2.57,  -1.99,  99.90,   0.18,  (max)
07/10 04Z,   0.40,  -2.82,  -2.21,  99.90,   0.21,
07/10 05Z,   0.40,  -4.02,  -3.40,  99.90,   0.22,
07/10 06Z,   0.40,  -5.84,  -5.33,  99.90,   0.11,
07/10 07Z,   0.40,  -8.03,  -7.46,  99.90,   0.17,
07/10 08Z,   0.40, -10.23,  -9.60,  99.90,   0.23,
07/10 09Z,   0.40, -11.79, -11.31,  99.90,   0.08,
07/10 10Z,   0.40, -12.08, -11.62,  99.90,   0.06,  (min)
07/10 11Z,   0.40, -11.24, -10.84,  99.90,  -0.00,
07/10 12Z,   0.50,  -9.76,  -9.34,  99.90,  -0.08,
07/10 13Z,   0.50,  -7.89,  -7.70,  99.90,  -0.31,
07/10 14Z,   0.50,  -5.90,  -5.55,  99.90,  -0.15,
07/10 15Z,   0.50,  -4.42,  -3.94,  99.90,  -0.02,
07/10 16Z,   0.50,  -3.93,  -3.44,  99.90,  -0.01,  (max)
07/10 17Z,   0.50,  -4.43,  -3.91,  99.90,   0.02,
07/10 18Z,   0.50,  -5.68,  -5.08,  99.90,   0.10,
07/10 19Z,   0.50,  -7.39,  -6.79,  99.90,   0.10,
07/10 20Z,   0.50,  -9.24,  -8.77,  99.90,  -0.03,
07/10 21Z,   0.50, -10.70, -10.23,  99.90,  -0.03,
07/10 22Z,   0.50, -11.04, -10.66,  99.90,  -0.12,  (min)
07/10 23Z,   0.50, -10.11,  -9.73,  99.90,  -0.12,
07/11 00Z,   0.40,  -8.44,  -8.08,  99.90,  -0.04,
07/11 01Z,   0.40,  -6.47,  -6.07,  99.90,   0.00,
07/11 02Z,   0.50,  -4.45,  -4.02,  99.90,  -0.07,
07/11 03Z,   0.50,  -2.87,  -2.45,  99.90,  -0.08,
07/11 04Z,   0.40,  -2.31,  -1.78,  99.90,   0.13,  (max)
07/11 05Z,   0.40,  -2.89,  -2.22,  99.90,   0.27,
07/11 06Z,   0.40,  -4.40,  -3.92,  99.90,   0.08,
07/11 07Z,   0.40,  -6.49,  -5.81,  99.90,   0.28,
07/11 08Z,   0.40,  -8.83,  -8.15,  99.90,   0.28,
07/11 09Z,   0.40, -11.00, -10.32,  99.90,   0.28,
07/11 10Z,   0.30, -12.28, -11.83,  99.90,   0.15,
07/11 11Z,   0.40, -12.16, -11.84,  99.90,  -0.08,  (min)
07/11 12Z,   0.40, -10.95, -10.50,  99.90,   0.05,
07/11 13Z,   0.40,  -9.21,  -8.88,  99.90,  -0.07,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/11 14Z,   0.30,  -7.17,  99.90,  -6.93,  -0.06,
07/11 15Z,   0.30,  -5.20,  99.90,  -4.96,  -0.05,
07/11 16Z,   0.30,  -3.95,  99.90,  -3.69,  -0.04,
07/11 17Z,   0.40,  -3.77,  99.90,  -3.40,  -0.03,  (max)
07/11 18Z,   0.40,  -4.59,  99.90,  -4.21,  -0.02,
07/11 19Z,   0.40,  -6.12,  99.90,  -5.73,  -0.01,
07/11 20Z,   0.40,  -8.01,  99.90,  -7.61,   0.00,
07/11 21Z,   0.40,  -9.90,  99.90,  -9.49,   0.01,
07/11 22Z,   0.40, -11.17,  99.90, -10.74,   0.02,  (min)
07/11 23Z,   0.40, -11.13,  99.90, -10.70,   0.03,
07/12 00Z,   0.40,  -9.82,  99.90,  -9.38,   0.04,
07/12 01Z,   0.40,  -7.90,  99.90,  -7.44,   0.05,
07/12 02Z,   0.40,  -5.79,  99.90,  -5.34,   0.05,
07/12 03Z,   0.40,  -3.78,  99.90,  -3.32,   0.05,
07/12 04Z,   0.30,  -2.41,  99.90,  -2.06,   0.05,
07/12 05Z,   0.30,  -2.18,  99.90,  -1.83,   0.05,  (max)
07/12 06Z,   0.30,  -3.13,  99.90,  -2.78,   0.05,
07/12 07Z,   0.30,  -4.96,  99.90,  -4.60,   0.05,
07/12 08Z,   0.40,  -7.26,  99.90,  -6.81,   0.05,
07/12 09Z,   0.40,  -9.69,  99.90,  -9.23,   0.05,
07/12 10Z,   0.40, -11.72,  99.90, -11.27,   0.05,
07/12 11Z,   0.40, -12.62,  99.90, -12.17,   0.05,  (min)
07/12 12Z,   0.40, -12.04,  99.90, -11.59,   0.05,
07/12 13Z,   0.40, -10.47,  99.90, -10.02,   0.05,
07/12 14Z,   0.40,  -8.49,  99.90,  -8.04,   0.05,
07/12 15Z,   0.40,  -6.36,  99.90,  -5.90,   0.05,
07/12 16Z,   0.40,  -4.50,  99.90,  -4.04,   0.05,
07/12 17Z,   0.40,  -3.52,  99.90,  -3.07,   0.05,  (max)
07/12 18Z,   0.40,  -3.70,  99.90,  -3.24,   0.05,
07/12 19Z,   0.50,  -4.86,  99.90,  -4.31,   0.05,
07/12 20Z,   0.40,  -6.66,  99.90,  -6.20,   0.05,
07/12 21Z,   0.50,  -8.69,  99.90,  -8.14,   0.05,
07/12 22Z,   0.50, -10.54,  99.90,  -9.99,   0.05,
07/12 23Z,   0.40, -11.54,  99.90, -11.08,   0.05,  (min)
07/13 00Z,   0.40, -11.09,  99.90, -10.64,   0.05,
07/13 01Z,   0.40,  -9.44,  99.90,  -8.99,   0.05,
07/13 02Z,   0.40,  -7.31,  99.90,  -6.86,   0.05,
07/13 03Z,   0.40,  -5.13,  99.90,  -4.68,   0.05,
07/13 04Z,   0.30,  -3.20,  99.90,  -2.85,   0.05,
07/13 05Z,   0.30,  -2.10,  99.90,  -1.75,   0.05,  (max)
07/13 06Z,   0.30,  -2.24,  99.90,  -1.88,   0.05,
07/13 07Z,   0.30,  -3.54,  99.90,  -3.19,   0.05,
07/13 08Z,   0.30,  -5.64,  99.90,  -5.29,   0.05,
07/13 09Z,   0.30,  -8.11,  99.90,  -7.75,   0.05,
07/13 10Z,   0.30, -10.51,  99.90, -10.16,   0.05,
07/13 11Z,   0.30, -12.31,  99.90, -11.95,   0.05,
07/13 12Z,   0.30, -12.76,  99.90, -12.41,   0.05,  (min)
07/13 13Z,   0.20, -11.72,  99.90, -11.47,   0.05,
07/13 14Z,   0.20,  -9.83,  99.90,  -9.58,   0.05,
07/13 15Z,   0.20,  -7.68,  99.90,  -7.42,   0.05,
07/13 16Z,   0.30,  -5.51,  99.90,  -5.16,   0.05,
07/13 17Z,   0.30,  -3.82,  99.90,  -3.47,   0.05,
07/13 18Z,   0.30,  -3.18,  99.90,  -2.82,   0.05,  (max)
07/13 19Z,   0.20,  -3.73,  99.90,  -3.48,   0.05,
07/13 20Z,   0.20,  -5.23,  99.90,  -4.97,   0.05,
07/13 21Z,   0.20,  -7.25,  99.90,  -6.99,   0.05,
07/13 22Z,   0.20,  -9.36,  99.90,  -9.11,   0.05,
07/13 23Z,   0.20, -11.11,  99.90, -10.85,   0.05,
07/14 00Z,   0.20, -11.79,  99.90, -11.54,   0.05,  (min)
07/14 01Z,   0.20, -10.95,  99.90, -10.70,   0.05,
07/14 02Z,   0.20,  -9.03,  99.90,  -8.77,   0.05,
07/14 03Z,   0.20,  -6.78,  99.90,  -6.52,   0.05,
07/14 04Z,   0.20,  -4.58,  99.90,  -4.33,   0.05,
07/14 05Z,   0.10,  -2.79,  99.90,  -2.64,   0.05,
07/14 06Z,   0.10,  -1.99,  99.90,  -1.84,   0.05,  (max)
07/14 07Z,   0.10,  -2.48,  99.90,  -2.32,   0.05,
07/14 08Z,   0.10,  -4.09,  99.90,  -3.94,   0.05,
07/14 09Z,   0.20,  -6.40,  99.90,  -6.14,   0.05,
07/14 10Z,   0.20,  -8.92,  99.90,  -8.66,   0.05,
07/14 11Z,   0.20, -11.22,  99.90, -10.96,   0.05,
07/14 12Z,   0.20, -12.68,  99.90, -12.43,   0.05,  (min)
07/14 13Z,   0.20, -12.67,  99.90, -12.42,   0.05,
07/14 14Z,   0.20, -11.22,  99.90, -10.97,   0.05,
07/14 15Z,   0.20,  -9.09,  99.90,  -8.83,   0.05,
07/14 16Z,   0.20,  -6.82,  99.90,  -6.56,   0.05,
07/14 17Z,   0.20,  -4.69,  99.90,  -4.44,   0.05,
07/14 18Z,   0.20,  -3.23,  99.90,  -2.98,   0.05,
07/14 19Z,   0.20,  -2.94,  99.90,  -2.68,   0.05,  (max)
07/14 20Z,   0.20,  -3.85,  99.90,  -3.60,   0.05,
07/14 21Z,   0.20,  -5.64,  99.90,  -5.38,   0.05,
07/14 22Z,   0.30,  -7.82,  99.90,  -7.47,   0.05,
07/14 23Z,   0.30,  -9.96,  99.90,  -9.61,   0.05,
07/15 00Z,   0.30, -11.56,  99.90, -11.20,   0.05,
07/15 01Z,   0.30, -11.93,  99.90, -11.57,   0.05,  (min)
07/15 02Z,   0.20, -10.77,  99.90, -10.51,   0.05,
07/15 03Z,   0.20,  -8.66,  99.90,  -8.41,   0.05,
07/15 04Z,   0.20,  -6.36,  99.90,  -6.11,   0.05,
07/15 05Z,   0.20,  -4.21,  99.90,  -3.96,   0.05,
07/15 06Z,   0.10,  -2.60,  99.90,  -2.44,   0.05,