ETSS stn

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The data located HERE are considered OPERATIONAL and are supported on a 24x7 basis.
#Washington, DC : 12/13/2025 20:21:44 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
12/12 00Z,   0.00,  -3.83,  -5.07,  99.90,  -1.24,  (min)
12/12 01Z,   0.00,  -4.04,  -4.92,  99.90,  -0.88,
12/12 02Z,   0.00,  -3.90,  -4.48,  99.90,  -0.58,
12/12 03Z,  -0.10,  -3.31,  -3.89,  99.90,  -0.48,
12/12 04Z,  -0.10,  -2.58,  -3.26,  99.90,  -0.58,
12/12 05Z,  -0.10,  -1.99,  -2.73,  99.90,  -0.64,
12/12 06Z,  -0.10,  -1.64,  -2.34,  99.90,  -0.60,
12/12 07Z,  -0.10,  -1.58,  -2.16,  99.90,  -0.48,  (max)
12/12 08Z,  -0.10,  -1.83,  -2.19,  99.90,  -0.26,
12/12 09Z,  -0.10,  -2.27,  -2.54,  99.90,  -0.17,
12/12 10Z,  -0.10,  -2.78,  -3.06,  99.90,  -0.18,
12/12 11Z,  -0.10,  -3.28,  -3.59,  99.90,  -0.21,
12/12 12Z,   0.00,  -3.70,  -4.03,  99.90,  -0.33,
12/12 13Z,   0.00,  -4.01,  -4.40,  99.90,  -0.39,
12/12 14Z,   0.00,  -4.07,  -4.62,  99.90,  -0.55,  (min)
12/12 15Z,   0.00,  -3.67,  -4.38,  99.90,  -0.71,
12/12 16Z,   0.00,  -2.95,  -3.65,  99.90,  -0.70,
12/12 17Z,   0.00,  -2.27,  -2.86,  99.90,  -0.59,
12/12 18Z,   0.10,  -1.78,  -2.26,  99.90,  -0.58,
12/12 19Z,   0.10,  -1.54,  -1.92,  99.90,  -0.48,
12/12 20Z,   0.10,  -1.63,  -1.79,  99.90,  -0.26,  (max)
12/12 21Z,   0.10,  -1.98,  -1.99,  99.90,  -0.11,
12/12 22Z,   0.10,  -2.47,  -2.37,  99.90,  -0.00,
12/12 23Z,   0.10,  -2.97,  -2.90,  99.90,  -0.03,
12/13 00Z,   0.20,  -3.42,  -3.41,  99.90,  -0.19,
12/13 01Z,   0.20,  -3.79,  -3.82,  99.90,  -0.23,
12/13 02Z,   0.20,  -4.00,  -4.04,  99.90,  -0.24,  (min)
12/13 03Z,   0.20,  -3.85,  -4.02,  99.90,  -0.37,
12/13 04Z,   0.20,  -3.29,  -3.63,  99.90,  -0.54,
12/13 05Z,   0.20,  -2.62,  -2.96,  99.90,  -0.54,
12/13 06Z,   0.10,  -2.08,  -2.35,  99.90,  -0.37,
12/13 07Z,   0.10,  -1.74,  -1.98,  99.90,  -0.34,
12/13 08Z,   0.10,  -1.68,  -1.91,  99.90,  -0.33,  (max)
12/13 09Z,   0.10,  -1.93,  -2.18,  99.90,  -0.35,
12/13 10Z,   0.10,  -2.39,  -2.69,  99.90,  -0.40,
12/13 11Z,   0.10,  -2.91,  -3.26,  99.90,  -0.45,
12/13 12Z,   0.00,  -3.39,  -3.76,  99.90,  -0.37,
12/13 13Z,   0.00,  -3.77,  -4.14,  99.90,  -0.37,
12/13 14Z,   0.00,  -4.03,  -4.32,  99.90,  -0.29,
12/13 15Z,   0.00,  -4.00,  -4.35,  99.90,  -0.35,  (min)
12/13 16Z,   0.00,  -3.55,  -4.05,  99.90,  -0.50,
12/13 17Z,   0.00,  -2.84,  -3.33,  99.90,  -0.49,
12/13 18Z,   0.00,  -2.19,  -2.61,  99.90,  -0.42,
12/13 19Z,   0.00,  -1.72,  -2.13,  99.90,  -0.41,
12/13 20Z,   0.00,  -1.49,  -1.89,  99.90,  -0.40,  (max)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
12/13 21Z,   0.00,  -1.60,  99.90,  -1.99,  -0.40,
12/13 22Z,   0.00,  -1.97,  99.90,  -2.36,  -0.39,
12/13 23Z,   0.00,  -2.46,  99.90,  -2.85,  -0.39,
12/14 00Z,  -0.10,  -2.96,  99.90,  -3.45,  -0.39,
12/14 01Z,  -0.10,  -3.41,  99.90,  -3.89,  -0.39,
12/14 02Z,  -0.10,  -3.78,  99.90,  -4.26,  -0.39,
12/14 03Z,  -0.10,  -3.99,  99.90,  -4.47,  -0.38,  (min)
12/14 04Z,  -0.10,  -3.83,  99.90,  -4.31,  -0.38,
12/14 05Z,  -0.10,  -3.29,  99.90,  -3.77,  -0.38,
12/14 06Z,  -0.10,  -2.66,  99.90,  -3.14,  -0.38,
12/14 07Z,  -0.20,  -2.14,  99.90,  -2.72,  -0.38,
12/14 08Z,  -0.20,  -1.80,  99.90,  -2.37,  -0.38,
12/14 09Z,  -0.20,  -1.75,  99.90,  -2.33,  -0.38,  (max)
12/14 10Z,  -0.20,  -2.03,  99.90,  -2.61,  -0.38,
12/14 11Z,  -0.20,  -2.51,  99.90,  -3.09,  -0.38,
12/14 12Z,  -0.20,  -3.04,  99.90,  -3.61,  -0.38,
12/14 13Z,  -0.30,  -3.49,  99.90,  -4.17,  -0.38,
12/14 14Z,  -0.30,  -3.83,  99.90,  -4.51,  -0.38,
12/14 15Z,  -0.30,  -4.03,  99.90,  -4.71,  -0.38,  (min)
12/14 16Z,  -0.30,  -3.93,  99.90,  -4.61,  -0.38,
12/14 17Z,  -0.30,  -3.42,  99.90,  -4.09,  -0.38,
12/14 18Z,  -0.30,  -2.71,  99.90,  -3.38,  -0.38,
12/14 19Z,  -0.40,  -2.08,  99.90,  -2.86,  -0.38,
12/14 20Z,  -0.40,  -1.63,  99.90,  -2.40,  -0.38,
12/14 21Z,  -0.40,  -1.44,  99.90,  -2.21,  -0.38,  (max)
12/14 22Z,  -0.40,  -1.58,  99.90,  -2.36,  -0.38,
12/14 23Z,  -0.50,  -1.98,  99.90,  -2.86,  -0.38,
12/15 00Z,  -0.50,  -2.49,  99.90,  -3.36,  -0.38,
12/15 01Z,  -0.50,  -2.99,  99.90,  -3.87,  -0.38,
12/15 02Z,  -0.60,  -3.43,  99.90,  -4.40,  -0.38,
12/15 03Z,  -0.60,  -3.80,  99.90,  -4.78,  -0.38,
12/15 04Z,  -0.70,  -4.01,  99.90,  -5.08,  -0.38,  (min)
12/15 05Z,  -0.80,  -3.82,  99.90,  -4.99,  -0.38,
12/15 06Z,  -0.80,  -3.28,  99.90,  -4.45,  -0.38,
12/15 07Z,  -0.90,  -2.67,  99.90,  -3.94,  -0.38,
12/15 08Z,  -1.00,  -2.15,  99.90,  -3.53,  -0.38,
12/15 09Z,  -1.00,  -1.82,  99.90,  -3.19,  -0.38,  (max)
12/15 10Z,  -1.10,  -1.81,  99.90,  -3.29,  -0.38,
12/15 11Z,  -1.10,  -2.13,  99.90,  -3.61,  -0.38,
12/15 12Z,  -1.20,  -2.64,  99.90,  -4.21,  -0.38,
12/15 13Z,  -1.20,  -3.16,  99.90,  -4.74,  -0.38,
12/15 14Z,  -1.30,  -3.59,  99.90,  -5.26,  -0.38,
12/15 15Z,  -1.30,  -3.89,  99.90,  -5.56,  -0.38,
12/15 16Z,  -1.30,  -4.03,  99.90,  -5.71,  -0.38,  (min)
12/15 17Z,  -1.40,  -3.85,  99.90,  -5.63,  -0.38,
12/15 18Z,  -1.40,  -3.27,  99.90,  -5.05,  -0.38,
12/15 19Z,  -1.40,  -2.56,  99.90,  -4.33,  -0.38,
12/15 20Z,  -1.40,  -1.95,  99.90,  -3.73,  -0.38,
12/15 21Z,  -1.40,  -1.53,  99.90,  -3.31,  -0.38,
12/15 22Z,  -1.40,  -1.39,  99.90,  -3.17,  -0.38,  (max)
12/15 23Z,  -1.40,  -1.60,  99.90,  -3.38,  -0.38,
12/16 00Z,  -1.40,  -2.04,  99.90,  -3.81,  -0.38,
12/16 01Z,  -1.40,  -2.56,  99.90,  -4.33,  -0.38,
12/16 02Z,  -1.40,  -3.05,  99.90,  -4.83,  -0.38,
12/16 03Z,  -1.40,  -3.49,  99.90,  -5.26,  -0.38,
12/16 04Z,  -1.40,  -3.86,  99.90,  -5.64,  -0.38,
12/16 05Z,  -1.30,  -4.04,  99.90,  -5.71,  -0.38,  (min)
12/16 06Z,  -1.30,  -3.80,  99.90,  -5.47,  -0.38,
12/16 07Z,  -1.30,  -3.23,  99.90,  -4.91,  -0.38,
12/16 08Z,  -1.20,  -2.62,  99.90,  -4.20,  -0.38,
12/16 09Z,  -1.20,  -2.11,  99.90,  -3.69,  -0.38,
12/16 10Z,  -1.10,  -1.81,  99.90,  -3.29,  -0.38,  (max)
12/16 11Z,  -1.10,  -1.86,  99.90,  -3.34,  -0.38,
12/16 12Z,  -1.10,  -2.24,  99.90,  -3.71,  -0.38,
12/16 13Z,  -1.00,  -2.76,  99.90,  -4.14,  -0.38,
12/16 14Z,  -1.00,  -3.28,  99.90,  -4.66,  -0.38,
12/16 15Z,  -1.00,  -3.68,  99.90,  -5.05,  -0.38,
12/16 16Z,  -0.90,  -3.94,  99.90,  -5.21,  -0.38,
12/16 17Z,  -0.90,  -4.02,  99.90,  -5.30,  -0.38,  (min)
12/16 18Z,  -0.90,  -3.75,  99.90,  -5.02,  -0.38,
12/16 19Z,  -0.90,  -3.10,  99.90,  -4.38,  -0.38,
12/16 20Z,  -0.80,  -2.38,  99.90,  -3.56,  -0.38,
12/16 21Z,  -0.80,  -1.81,  99.90,  -2.99,  -0.38,
12/16 22Z,  -0.80,  -1.44,  99.90,  -2.62,  -0.38,
12/16 23Z,  -0.70,  -1.39,  99.90,  -2.47,  -0.38,  (max)
12/17 00Z,  -0.70,  -1.67,  99.90,  -2.74,  -0.38,
12/17 01Z,  -0.70,  -2.14,  99.90,  -3.22,  -0.38,
12/17 02Z,  -0.70,  -2.67,  99.90,  -3.74,  -0.38,
12/17 03Z,  -0.70,  -3.16,  99.90,  -4.23,  -0.38,
12/17 04Z,  -0.60,  -3.58,  99.90,  -4.56,  -0.38,
12/17 05Z,  -0.60,  -3.94,  99.90,  -4.92,  -0.38,
12/17 06Z,  -0.60,  -4.06,  99.90,  -5.03,  -0.38,  (min)
12/17 07Z,  -0.60,  -3.74,  99.90,  -4.71,  -0.38,
12/17 08Z,  -0.60,  -3.13,  99.90,  -4.11,  -0.38,
12/17 09Z,  -0.50,  -2.52,  99.90,  -3.40,  -0.38,
12/17 10Z,  -0.50,  -2.03,  99.90,  -2.91,  -0.38,
12/17 11Z,  -0.50,  -1.79,  99.90,  -2.67,  -0.38,  (max)
12/17 12Z,  -0.50,  -1.92,  99.90,  -2.80,  -0.38,