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

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Manual
Datum
hat-on
mhhw-on
msl-on
mllw-on
Regions
Northeast
Mid-Atlantic
Southeast
Gulf
Northwest
Alaska
Gulf of Alaska
Status
Stations
Duck Pier, NC
Cape Hatteras NC
Beaufort, NC
Wilmington, NC
Wrightsville Bch
Holden Beach, NC
Springmaid, SC
Charleston, SC
Ft. Pulaski, GA
Fernandina, FL
Surge List
East Coast
#Charleston, SC : 04/20/2026 11:22:04 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/18 12Z,   0.40,   4.89,   5.51,  99.90,   0.22,
04/18 13Z,   0.40,   5.37,   5.92,  99.90,   0.15,  (max)
04/18 14Z,   0.40,   5.22,   5.72,  99.90,   0.10,
04/18 15Z,   0.40,   4.45,   4.82,  99.90,  -0.03,
04/18 16Z,   0.40,   3.12,   3.50,  99.90,  -0.02,
04/18 17Z,   0.40,   1.53,   1.85,  99.90,  -0.08,
04/18 18Z,   0.50,   0.11,   0.42,  99.90,  -0.19,
04/18 19Z,   0.50,  -0.69,  -0.29,  99.90,  -0.10,  (min)
04/18 20Z,   0.50,  -0.54,   0.03,  99.90,   0.07,
04/18 21Z,   0.50,   0.60,   1.35,  99.90,   0.25,
04/18 22Z,   0.50,   2.42,   3.25,  99.90,   0.33,
04/18 23Z,   0.50,   4.32,   5.17,  99.90,   0.35,
04/19 00Z,   0.50,   5.80,   6.46,  99.90,   0.16,
04/19 01Z,   0.60,   6.59,   7.16,  99.90,  -0.03,
04/19 02Z,   0.60,   6.67,   7.32,  99.90,   0.05,  (max)
04/19 03Z,   0.60,   6.07,   6.61,  99.90,  -0.06,
04/19 04Z,   0.50,   4.86,   5.37,  99.90,   0.01,
04/19 05Z,   0.50,   3.22,   3.80,  99.90,   0.08,
04/19 06Z,   0.50,   1.52,   2.20,  99.90,   0.18,
04/19 07Z,   0.40,   0.18,   0.84,  99.90,   0.26,
04/19 08Z,   0.50,  -0.44,   0.13,  99.90,   0.07,  (min)
04/19 09Z,   0.50,  -0.12,   0.45,  99.90,   0.07,
04/19 10Z,   0.40,   1.01,   1.75,  99.90,   0.34,
04/19 11Z,   0.40,   2.55,   3.29,  99.90,   0.34,
04/19 12Z,   0.30,   3.96,   4.63,  99.90,   0.37,
04/19 13Z,   0.30,   4.90,   5.42,  99.90,   0.22,
04/19 14Z,   0.30,   5.26,   5.66,  99.90,   0.10,  (max)
04/19 15Z,   0.30,   5.01,   5.29,  99.90,  -0.02,
04/19 16Z,   0.30,   4.16,   4.29,  99.90,  -0.17,
04/19 17Z,   0.30,   2.80,   2.87,  99.90,  -0.23,
04/19 18Z,   0.40,   1.25,   1.28,  99.90,  -0.37,
04/19 19Z,   0.30,  -0.05,  -0.03,  99.90,  -0.28,
04/19 20Z,   0.30,  -0.67,  -0.71,  99.90,  -0.34,  (min)
04/19 21Z,   0.30,  -0.34,  -0.21,  99.90,  -0.17,
04/19 22Z,   0.30,   0.93,   1.12,  99.90,  -0.11,
04/19 23Z,   0.20,   2.77,   3.11,  99.90,   0.14,
04/20 00Z,   0.30,   4.59,   5.02,  99.90,   0.13,
04/20 01Z,   0.30,   5.92,   6.24,  99.90,   0.02,
04/20 02Z,   0.40,   6.57,   7.07,  99.90,   0.10,
04/20 03Z,   0.40,   6.56,   7.17,  99.90,   0.21,  (max)
04/20 04Z,   0.50,   5.89,   6.49,  99.90,   0.10,
04/20 05Z,   0.50,   4.64,   5.20,  99.90,   0.06,
04/20 06Z,   0.50,   3.02,   3.60,  99.90,   0.08,
04/20 07Z,   0.60,   1.40,   2.08,  99.90,   0.08,
04/20 08Z,   0.60,   0.19,   0.90,  99.90,   0.11,
04/20 09Z,   0.70,  -0.29,   0.52,  99.90,   0.11,  (min)
04/20 10Z,   0.70,   0.12,   1.30,  99.90,   0.48,
04/20 11Z,   0.80,   1.28,   2.57,  99.90,   0.49,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 12Z,   0.80,   2.74,  99.90,   3.99,   0.46,
04/20 13Z,   0.70,   4.02,  99.90,   5.14,   0.42,
04/20 14Z,   0.70,   4.83,  99.90,   5.91,   0.38,
04/20 15Z,   0.60,   5.10,  99.90,   6.05,   0.35,  (max)
04/20 16Z,   0.60,   4.79,  99.90,   5.70,   0.31,
04/20 17Z,   0.70,   3.91,  99.90,   4.88,   0.27,
04/20 18Z,   0.60,   2.58,  99.90,   3.42,   0.24,
04/20 19Z,   0.60,   1.12,  99.90,   1.92,   0.20,
04/20 20Z,   0.60,  -0.03,  99.90,   0.73,   0.16,
04/20 21Z,   0.60,  -0.50,  99.90,   0.22,   0.13,  (min)
04/20 22Z,   0.60,  -0.06,  99.90,   0.63,   0.09,
04/20 23Z,   0.60,   1.24,  99.90,   1.89,   0.05,
04/21 00Z,   0.60,   3.00,  99.90,   3.65,   0.05,
04/21 01Z,   0.50,   4.67,  99.90,   5.22,   0.05,
04/21 02Z,   0.50,   5.84,  99.90,   6.40,   0.05,
04/21 03Z,   0.40,   6.39,  99.90,   6.85,   0.05,  (max)
04/21 04Z,   0.40,   6.32,  99.90,   6.78,   0.05,
04/21 05Z,   0.40,   5.64,  99.90,   6.10,   0.05,
04/21 06Z,   0.40,   4.43,  99.90,   4.88,   0.05,
04/21 07Z,   0.40,   2.90,  99.90,   3.35,   0.05,
04/21 08Z,   0.40,   1.40,  99.90,   1.85,   0.05,
04/21 09Z,   0.30,   0.31,  99.90,   0.67,   0.05,
04/21 10Z,   0.30,  -0.06,  99.90,   0.29,   0.05,  (min)
04/21 11Z,   0.30,   0.39,  99.90,   0.74,   0.05,
04/21 12Z,   0.30,   1.50,  99.90,   1.86,   0.05,
04/21 13Z,   0.40,   2.85,  99.90,   3.30,   0.05,
04/21 14Z,   0.40,   4.00,  99.90,   4.45,   0.05,
04/21 15Z,   0.40,   4.71,  99.90,   5.17,   0.05,
04/21 16Z,   0.40,   4.93,  99.90,   5.39,   0.05,  (max)
04/21 17Z,   0.50,   4.62,  99.90,   5.17,   0.05,
04/21 18Z,   0.50,   3.76,  99.90,   4.31,   0.05,
04/21 19Z,   0.50,   2.50,  99.90,   3.05,   0.05,
04/21 20Z,   0.60,   1.15,  99.90,   1.81,   0.05,
04/21 21Z,   0.60,   0.12,  99.90,   0.77,   0.05,
04/21 22Z,   0.60,  -0.26,  99.90,   0.40,   0.05,  (min)
04/21 23Z,   0.50,   0.22,  99.90,   0.77,   0.05,
04/22 00Z,   0.50,   1.45,  99.90,   2.01,   0.05,
04/22 01Z,   0.50,   3.07,  99.90,   3.63,   0.05,
04/22 02Z,   0.40,   4.58,  99.90,   5.03,   0.05,
04/22 03Z,   0.40,   5.63,  99.90,   6.08,   0.05,
04/22 04Z,   0.40,   6.12,  99.90,   6.57,   0.05,  (max)
04/22 05Z,   0.40,   6.04,  99.90,   6.50,   0.05,
04/22 06Z,   0.40,   5.40,  99.90,   5.85,   0.05,
04/22 07Z,   0.40,   4.26,  99.90,   4.71,   0.05,
04/22 08Z,   0.40,   2.84,  99.90,   3.30,   0.05,
04/22 09Z,   0.40,   1.48,  99.90,   1.93,   0.05,
04/22 10Z,   0.50,   0.50,  99.90,   1.05,   0.05,
04/22 11Z,   0.40,   0.18,  99.90,   0.63,   0.05,  (min)
04/22 12Z,   0.40,   0.62,  99.90,   1.07,   0.05,
04/22 13Z,   0.30,   1.65,  99.90,   2.00,   0.05,
04/22 14Z,   0.30,   2.87,  99.90,   3.23,   0.05,
04/22 15Z,   0.30,   3.92,  99.90,   4.27,   0.05,
04/22 16Z,   0.30,   4.59,  99.90,   4.94,   0.05,
04/22 17Z,   0.40,   4.81,  99.90,   5.26,   0.05,  (max)
04/22 18Z,   0.40,   4.53,  99.90,   4.98,   0.05,
04/22 19Z,   0.30,   3.73,  99.90,   4.08,   0.05,
04/22 20Z,   0.40,   2.56,  99.90,   3.01,   0.05,
04/22 21Z,   0.40,   1.32,  99.90,   1.77,   0.05,
04/22 22Z,   0.40,   0.37,  99.90,   0.82,   0.05,
04/22 23Z,   0.40,   0.01,  99.90,   0.47,   0.05,  (min)
04/23 00Z,   0.40,   0.44,  99.90,   0.89,   0.05,
04/23 01Z,   0.30,   1.56,  99.90,   1.91,   0.05,
04/23 02Z,   0.30,   3.02,  99.90,   3.37,   0.05,
04/23 03Z,   0.30,   4.37,  99.90,   4.73,   0.05,
04/23 04Z,   0.20,   5.34,  99.90,   5.59,   0.05,
04/23 05Z,   0.20,   5.81,  99.90,   6.06,   0.05,  (max)
04/23 06Z,   0.20,   5.77,  99.90,   6.03,   0.05,
04/23 07Z,   0.30,   5.19,  99.90,   5.55,   0.05,
04/23 08Z,   0.30,   4.15,  99.90,   4.50,   0.05,
04/23 09Z,   0.20,   2.84,  99.90,   3.10,   0.05,
04/23 10Z,   0.20,   1.58,  99.90,   1.84,   0.05,
04/23 11Z,   0.20,   0.66,  99.90,   0.92,   0.05,
04/23 12Z,   0.10,   0.35,  99.90,   0.50,   0.05,  (min)
04/23 13Z,   0.10,   0.75,  99.90,   0.90,   0.05,
04/23 14Z,   0.10,   1.69,  99.90,   1.85,   0.05,
04/23 15Z,   0.10,   2.83,  99.90,   2.99,   0.05,
04/23 16Z,   0.20,   3.83,  99.90,   4.08,   0.05,
04/23 17Z,   0.20,   4.51,  99.90,   4.76,   0.05,
04/23 18Z,   0.30,   4.77,  99.90,   5.13,   0.05,  (max)
04/23 19Z,   0.30,   4.55,  99.90,   4.91,   0.05,
04/23 20Z,   0.40,   3.82,  99.90,   4.28,   0.05,
04/23 21Z,   0.50,   2.73,  99.90,   3.29,   0.05,
04/23 22Z,   0.50,   1.56,  99.90,   2.11,   0.05,
04/23 23Z,   0.50,   0.63,  99.90,   1.18,   0.05,
04/24 00Z,   0.50,   0.24,  99.90,   0.79,   0.05,