ETSS stn

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.
#Washington, DC : 12/12/2025 20:22:27 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
12/11 00Z,   0.70,  -4.11,  -2.89,  99.90,   0.52,
12/11 01Z,   0.70,  -3.97,  -2.99,  99.90,   0.28,  (min)
12/11 02Z,   0.70,  -3.35,  -2.68,  99.90,  -0.03,
12/11 03Z,   0.70,  -2.54,  -1.99,  99.90,  -0.15,
12/11 04Z,   0.70,  -1.89,  -1.35,  99.90,  -0.16,
12/11 05Z,   0.70,  -1.52,  -0.95,  99.90,  -0.13,  (max)
12/11 06Z,   0.70,  -1.46,  -1.05,  99.90,  -0.29,
12/11 07Z,   0.60,  -1.71,  -1.44,  99.90,  -0.33,
12/11 08Z,   0.60,  -2.16,  -2.07,  99.90,  -0.51,
12/11 09Z,   0.60,  -2.67,  -2.72,  99.90,  -0.65,
12/11 10Z,   0.60,  -3.18,  -3.25,  99.90,  -0.67,
12/11 11Z,   0.50,  -3.64,  -3.70,  99.90,  -0.56,
12/11 12Z,   0.50,  -4.00,  -3.95,  99.90,  -0.45,
12/11 13Z,   0.50,  -4.12,  -4.17,  99.90,  -0.55,
12/11 14Z,   0.40,  -3.78,  -4.40,  99.90,  -1.02,  (min)
12/11 15Z,   0.40,  -3.06,  -4.39,  99.90,  -1.73,
12/11 16Z,   0.40,  -2.33,  -4.22,  99.90,  -2.29,
12/11 17Z,   0.30,  -1.82,  -3.82,  99.90,  -2.30,
12/11 18Z,   0.30,  -1.57,  -3.38,  99.90,  -2.11,  (max)
12/11 19Z,   0.20,  -1.65,  -3.48,  99.90,  -2.03,
12/11 20Z,   0.20,  -2.00,  -4.00,  99.90,  -2.20,
12/11 21Z,   0.10,  -2.49,  -4.48,  99.90,  -2.09,
12/11 22Z,   0.10,  -3.00,  -4.75,  99.90,  -1.85,
12/11 23Z,   0.00,  -3.46,  -4.97,  99.90,  -1.51,
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,   0.00,  -1.78,  -2.26,  99.90,  -0.48,
12/12 19Z,   0.00,  -1.54,  -1.92,  99.90,  -0.38,
12/12 20Z,   0.00,  -1.63,  -1.79,  99.90,  -0.16,  (max)
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
12/12 21Z,   0.00,  -1.98,  99.90,  -2.16,  -0.18,
12/12 22Z,   0.00,  -2.47,  99.90,  -2.66,  -0.19,
12/12 23Z,   0.00,  -2.97,  99.90,  -3.18,  -0.21,
12/13 00Z,   0.00,  -3.42,  99.90,  -3.65,  -0.22,
12/13 01Z,   0.00,  -3.79,  99.90,  -4.03,  -0.24,
12/13 02Z,   0.00,  -4.00,  99.90,  -4.26,  -0.26,  (min)
12/13 03Z,   0.00,  -3.85,  99.90,  -4.12,  -0.27,
12/13 04Z,   0.00,  -3.29,  99.90,  -3.58,  -0.29,
12/13 05Z,   0.00,  -2.62,  99.90,  -2.92,  -0.30,
12/13 06Z,   0.00,  -2.08,  99.90,  -2.40,  -0.32,
12/13 07Z,   0.00,  -1.74,  99.90,  -2.07,  -0.33,
12/13 08Z,   0.00,  -1.68,  99.90,  -2.02,  -0.35,  (max)
12/13 09Z,   0.00,  -1.93,  99.90,  -2.28,  -0.35,
12/13 10Z,   0.00,  -2.39,  99.90,  -2.73,  -0.35,
12/13 11Z,   0.00,  -2.91,  99.90,  -3.25,  -0.35,
12/13 12Z,   0.00,  -3.39,  99.90,  -3.73,  -0.35,
12/13 13Z,   0.00,  -3.77,  99.90,  -4.11,  -0.35,
12/13 14Z,   0.00,  -4.03,  99.90,  -4.37,  -0.35,  (min)
12/13 15Z,   0.00,  -4.00,  99.90,  -4.35,  -0.35,
12/13 16Z,   0.00,  -3.55,  99.90,  -3.89,  -0.35,
12/13 17Z,   0.00,  -2.84,  99.90,  -3.18,  -0.35,
12/13 18Z,   0.00,  -2.19,  99.90,  -2.53,  -0.35,
12/13 19Z,   0.00,  -1.72,  99.90,  -2.06,  -0.35,
12/13 20Z,   0.00,  -1.49,  99.90,  -1.84,  -0.35,  (max)
12/13 21Z,   0.00,  -1.60,  99.90,  -1.94,  -0.35,
12/13 22Z,   0.00,  -1.97,  99.90,  -2.32,  -0.35,
12/13 23Z,   0.00,  -2.46,  99.90,  -2.81,  -0.35,
12/14 00Z,   0.00,  -2.96,  99.90,  -3.31,  -0.35,
12/14 01Z,   0.00,  -3.41,  99.90,  -3.75,  -0.35,
12/14 02Z,   0.00,  -3.78,  99.90,  -4.12,  -0.35,
12/14 03Z,   0.00,  -3.99,  99.90,  -4.34,  -0.35,  (min)
12/14 04Z,   0.00,  -3.83,  99.90,  -4.17,  -0.35,
12/14 05Z,   0.00,  -3.29,  99.90,  -3.64,  -0.35,
12/14 06Z,   0.00,  -2.66,  99.90,  -3.01,  -0.35,
12/14 07Z,   0.00,  -2.14,  99.90,  -2.49,  -0.35,
12/14 08Z,   0.00,  -1.80,  99.90,  -2.14,  -0.35,
12/14 09Z,   0.00,  -1.75,  99.90,  -2.10,  -0.35,  (max)
12/14 10Z,  -0.10,  -2.03,  99.90,  -2.48,  -0.35,
12/14 11Z,  -0.10,  -2.51,  99.90,  -2.96,  -0.35,
12/14 12Z,  -0.10,  -3.04,  99.90,  -3.48,  -0.35,
12/14 13Z,  -0.10,  -3.49,  99.90,  -3.94,  -0.35,
12/14 14Z,  -0.10,  -3.83,  99.90,  -4.28,  -0.35,
12/14 15Z,  -0.10,  -4.03,  99.90,  -4.48,  -0.35,  (min)
12/14 16Z,  -0.10,  -3.93,  99.90,  -4.38,  -0.35,
12/14 17Z,  -0.10,  -3.42,  99.90,  -3.86,  -0.35,
12/14 18Z,  -0.10,  -2.71,  99.90,  -3.15,  -0.35,
12/14 19Z,  -0.20,  -2.08,  99.90,  -2.63,  -0.35,
12/14 20Z,  -0.20,  -1.63,  99.90,  -2.17,  -0.35,
12/14 21Z,  -0.20,  -1.44,  99.90,  -1.98,  -0.35,  (max)
12/14 22Z,  -0.20,  -1.58,  99.90,  -2.13,  -0.35,
12/14 23Z,  -0.20,  -1.98,  99.90,  -2.53,  -0.35,
12/15 00Z,  -0.30,  -2.49,  99.90,  -3.14,  -0.35,
12/15 01Z,  -0.30,  -2.99,  99.90,  -3.64,  -0.35,
12/15 02Z,  -0.40,  -3.43,  99.90,  -4.17,  -0.35,
12/15 03Z,  -0.40,  -3.80,  99.90,  -4.55,  -0.35,
12/15 04Z,  -0.40,  -4.01,  99.90,  -4.75,  -0.35,  (min)
12/15 05Z,  -0.50,  -3.82,  99.90,  -4.66,  -0.35,
12/15 06Z,  -0.50,  -3.28,  99.90,  -4.12,  -0.35,
12/15 07Z,  -0.60,  -2.67,  99.90,  -3.61,  -0.35,
12/15 08Z,  -0.60,  -2.15,  99.90,  -3.10,  -0.35,
12/15 09Z,  -0.70,  -1.82,  99.90,  -2.86,  -0.35,
12/15 10Z,  -0.70,  -1.81,  99.90,  -2.86,  -0.35,  (max)
12/15 11Z,  -0.80,  -2.13,  99.90,  -3.28,  -0.35,
12/15 12Z,  -0.80,  -2.64,  99.90,  -3.78,  -0.35,
12/15 13Z,  -0.90,  -3.16,  99.90,  -4.41,  -0.35,
12/15 14Z,  -0.90,  -3.59,  99.90,  -4.84,  -0.35,
12/15 15Z,  -0.90,  -3.89,  99.90,  -5.13,  -0.35,
12/15 16Z,  -1.00,  -4.03,  99.90,  -5.38,  -0.35,  (min)
12/15 17Z,  -1.00,  -3.85,  99.90,  -5.20,  -0.35,
12/15 18Z,  -1.00,  -3.27,  99.90,  -4.62,  -0.35,
12/15 19Z,  -1.00,  -2.56,  99.90,  -3.90,  -0.35,
12/15 20Z,  -1.00,  -1.95,  99.90,  -3.30,  -0.35,
12/15 21Z,  -1.00,  -1.53,  99.90,  -2.88,  -0.35,
12/15 22Z,  -1.00,  -1.39,  99.90,  -2.74,  -0.35,  (max)
12/15 23Z,  -1.00,  -1.60,  99.90,  -2.95,  -0.35,
12/16 00Z,  -1.00,  -2.04,  99.90,  -3.39,  -0.35,
12/16 01Z,  -1.00,  -2.56,  99.90,  -3.90,  -0.35,
12/16 02Z,  -1.00,  -3.05,  99.90,  -4.40,  -0.35,
12/16 03Z,  -1.00,  -3.49,  99.90,  -4.83,  -0.35,
12/16 04Z,  -0.90,  -3.86,  99.90,  -5.11,  -0.35,
12/16 05Z,  -0.90,  -4.04,  99.90,  -5.28,  -0.35,  (min)
12/16 06Z,  -0.80,  -3.80,  99.90,  -4.94,  -0.35,
12/16 07Z,  -0.80,  -3.23,  99.90,  -4.38,  -0.35,
12/16 08Z,  -0.80,  -2.62,  99.90,  -3.77,  -0.35,
12/16 09Z,  -0.80,  -2.11,  99.90,  -3.26,  -0.35,
12/16 10Z,  -0.70,  -1.81,  99.90,  -2.86,  -0.35,  (max)
12/16 11Z,  -0.70,  -1.86,  99.90,  -2.91,  -0.35,
12/16 12Z,  -0.70,  -2.24,  99.90,  -3.28,  -0.35,