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
Cherry Point, WA
Friday Harbor WA
Port Townsend
Seattle, WA
Port Angeles, WA
Neah Bay, WA
Toke Point, WA
Astoria, OR
South Beach, OR
Charleston, OR
Port Orford, OR
Crescent City, CA
North Spit, CA
Arena Cove, CA
Point Reyes, CA
Port Chicago, CA
San Francisco CA
Surge List
West Coast
#Seattle, WA : 07/19/2026 14:21:04 GMT (units in feet MSL)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/17 18Z,   0.60,  -3.67,  -2.88,  99.90,   0.19,
07/17 19Z,   0.60,  -6.24,  -5.63,  99.90,   0.01,
07/17 20Z,   0.60,  -7.93,  -7.42,  99.90,  -0.09,
07/17 21Z,   0.60,  -8.19,  -7.72,  99.90,  -0.13,  (min)
07/17 22Z,   0.60,  -6.96,  -6.38,  99.90,  -0.02,
07/17 23Z,   0.60,  -4.59,  -4.04,  99.90,  -0.05,
07/18 00Z,   0.80,  -1.62,  -1.01,  99.90,  -0.19,
07/18 01Z,   0.80,   1.36,   2.03,  99.90,  -0.13,
07/18 02Z,   0.80,   3.78,   4.32,  99.90,  -0.26,
07/18 03Z,   0.80,   5.24,   5.63,  99.90,  -0.41,
07/18 04Z,   0.80,   5.62,   5.94,  99.90,  -0.48,  (max)
07/18 05Z,   0.80,   5.00,   5.19,  99.90,  -0.61,
07/18 06Z,   0.70,   3.55,   3.92,  99.90,  -0.33,
07/18 07Z,   0.70,   1.58,   2.07,  99.90,  -0.21,
07/18 08Z,   0.70,  -0.37,   0.08,  99.90,  -0.25,
07/18 09Z,   0.70,  -1.71,  -1.25,  99.90,  -0.24,
07/18 10Z,   0.70,  -2.08,  -1.63,  99.90,  -0.25,  (min)
07/18 11Z,   0.60,  -1.54,  -1.03,  99.90,  -0.09,
07/18 12Z,   0.50,  -0.37,   0.10,  99.90,  -0.03,
07/18 13Z,   0.50,   1.04,   1.50,  99.90,  -0.04,
07/18 14Z,   0.50,   2.21,   2.78,  99.90,   0.07,
07/18 15Z,   0.50,   2.69,   3.34,  99.90,   0.15,  (max)
07/18 16Z,   0.50,   2.24,   2.88,  99.90,   0.14,
07/18 17Z,   0.50,   0.91,   1.55,  99.90,   0.14,
07/18 18Z,   0.50,  -1.08,  -0.44,  99.90,   0.14,
07/18 19Z,   0.50,  -3.37,  -2.85,  99.90,   0.02,
07/18 20Z,   0.50,  -5.43,  -5.04,  99.90,  -0.11,
07/18 21Z,   0.50,  -6.60,  -6.28,  99.90,  -0.18,  (min)
07/18 22Z,   0.50,  -6.48,  -6.17,  99.90,  -0.19,
07/18 23Z,   0.50,  -5.09,  -4.72,  99.90,  -0.13,
07/19 00Z,   0.60,  -2.79,  -2.43,  99.90,  -0.24,
07/19 01Z,   0.60,  -0.09,   0.42,  99.90,  -0.09,
07/19 02Z,   0.60,   2.50,   3.06,  99.90,  -0.04,
07/19 03Z,   0.60,   4.45,   4.92,  99.90,  -0.13,
07/19 04Z,   0.60,   5.42,   5.75,  99.90,  -0.27,  (max)
07/19 05Z,   0.60,   5.34,   5.56,  99.90,  -0.38,
07/19 06Z,   0.60,   4.32,   4.58,  99.90,  -0.34,
07/19 07Z,   0.60,   2.56,   3.01,  99.90,  -0.15,
07/19 08Z,   0.60,   0.42,   0.85,  99.90,  -0.17,
07/19 09Z,   0.60,  -1.54,  -1.19,  99.90,  -0.25,
07/19 10Z,   0.60,  -2.78,  -2.42,  99.90,  -0.24,
07/19 11Z,   0.60,  -3.04,  -2.72,  99.90,  -0.28,  (min)
07/19 12Z,   0.60,  -2.42,  -2.07,  99.90,  -0.25,
07/19 13Z,   0.60,  -1.22,  -0.94,  99.90,  -0.32,
07/19 14Z,   0.60,   0.20,   0.42,  99.90,  -0.38,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
07/19 15Z,   0.60,   1.39,  99.90,   1.63,  -0.36,
07/19 16Z,   0.60,   1.94,  99.90,   2.20,  -0.34,  (max)
07/19 17Z,   0.60,   1.66,  99.90,   1.94,  -0.32,
07/19 18Z,   0.60,   0.64,  99.90,   0.94,  -0.30,
07/19 19Z,   0.60,  -0.91,  99.90,  -0.59,  -0.28,
07/19 20Z,   0.60,  -2.67,  99.90,  -2.33,  -0.26,
07/19 21Z,   0.60,  -4.17,  99.90,  -3.81,  -0.24,
07/19 22Z,   0.60,  -4.88,  99.90,  -4.49,  -0.22,  (min)
07/19 23Z,   0.60,  -4.49,  99.90,  -4.08,  -0.20,
07/20 00Z,   0.60,  -3.09,  99.90,  -2.67,  -0.18,
07/20 01Z,   0.60,  -1.04,  99.90,  -0.60,  -0.16,
07/20 02Z,   0.60,   1.26,  99.90,   1.72,  -0.14,
07/20 03Z,   0.60,   3.36,  99.90,   3.82,  -0.14,
07/20 04Z,   0.60,   4.79,  99.90,   5.26,  -0.14,
07/20 05Z,   0.60,   5.27,  99.90,   5.73,  -0.14,  (max)
07/20 06Z,   0.60,   4.76,  99.90,   5.22,  -0.14,
07/20 07Z,   0.60,   3.40,  99.90,   3.87,  -0.14,
07/20 08Z,   0.60,   1.43,  99.90,   1.90,  -0.14,
07/20 09Z,   0.60,  -0.77,  99.90,  -0.31,  -0.14,
07/20 10Z,   0.70,  -2.67,  99.90,  -2.10,  -0.14,
07/20 11Z,   0.60,  -3.78,  99.90,  -3.32,  -0.14,
07/20 12Z,   0.60,  -3.94,  99.90,  -3.47,  -0.14,  (min)
07/20 13Z,   0.70,  -3.27,  99.90,  -2.70,  -0.14,
07/20 14Z,   0.70,  -2.04,  99.90,  -1.48,  -0.14,
07/20 15Z,   0.70,  -0.60,  99.90,  -0.03,  -0.14,
07/20 16Z,   0.70,   0.65,  99.90,   1.21,  -0.14,
07/20 17Z,   0.70,   1.32,  99.90,   1.89,  -0.14,  (max)
07/20 18Z,   0.70,   1.30,  99.90,   1.87,  -0.14,
07/20 19Z,   0.70,   0.68,  99.90,   1.24,  -0.14,
07/20 20Z,   0.70,  -0.37,  99.90,   0.19,  -0.14,
07/20 21Z,   0.70,  -1.59,  99.90,  -1.03,  -0.14,
07/20 22Z,   0.70,  -2.59,  99.90,  -2.03,  -0.14,
07/20 23Z,   0.70,  -2.95,  99.90,  -2.38,  -0.14,  (min)
07/21 00Z,   0.70,  -2.46,  99.90,  -1.90,  -0.14,
07/21 01Z,   0.70,  -1.25,  99.90,  -0.69,  -0.14,
07/21 02Z,   0.70,   0.42,  99.90,   0.99,  -0.14,
07/21 03Z,   0.70,   2.24,  99.90,   2.80,  -0.14,
07/21 04Z,   0.70,   3.82,  99.90,   4.38,  -0.14,
07/21 05Z,   0.70,   4.75,  99.90,   5.31,  -0.14,
07/21 06Z,   0.70,   4.79,  99.90,   5.35,  -0.14,  (max)
07/21 07Z,   0.70,   3.94,  99.90,   4.51,  -0.14,
07/21 08Z,   0.70,   2.37,  99.90,   2.93,  -0.14,
07/21 09Z,   0.70,   0.30,  99.90,   0.86,  -0.14,
07/21 10Z,   0.70,  -1.89,  99.90,  -1.32,  -0.14,
07/21 11Z,   0.70,  -3.68,  99.90,  -3.11,  -0.14,
07/21 12Z,   0.70,  -4.66,  99.90,  -4.09,  -0.14,
07/21 13Z,   0.70,  -4.72,  99.90,  -4.16,  -0.14,  (min)
07/21 14Z,   0.70,  -4.01,  99.90,  -3.44,  -0.14,
07/21 15Z,   0.70,  -2.74,  99.90,  -2.18,  -0.14,
07/21 16Z,   0.70,  -1.24,  99.90,  -0.68,  -0.14,
07/21 17Z,   0.70,   0.11,  99.90,   0.67,  -0.14,
07/21 18Z,   0.70,   0.97,  99.90,   1.53,  -0.14,
07/21 19Z,   0.70,   1.26,  99.90,   1.82,  -0.14,  (max)
07/21 20Z,   0.70,   1.06,  99.90,   1.63,  -0.14,
07/21 21Z,   0.70,   0.50,  99.90,   1.07,  -0.14,
07/21 22Z,   0.70,  -0.25,  99.90,   0.32,  -0.14,
07/21 23Z,   0.70,  -0.89,  99.90,  -0.32,  -0.14,
07/22 00Z,   0.70,  -1.08,  99.90,  -0.52,  -0.14,  (min)
07/22 01Z,   0.70,  -0.69,  99.90,  -0.13,  -0.14,
07/22 02Z,   0.70,   0.20,  99.90,   0.76,  -0.14,
07/22 03Z,   0.70,   1.42,  99.90,   1.99,  -0.14,
07/22 04Z,   0.70,   2.75,  99.90,   3.32,  -0.14,
07/22 05Z,   0.70,   3.86,  99.90,   4.43,  -0.14,
07/22 06Z,   0.70,   4.38,  99.90,   4.94,  -0.14,  (max)
07/22 07Z,   0.80,   4.09,  99.90,   4.75,  -0.14,
07/22 08Z,   0.80,   3.02,  99.90,   3.69,  -0.14,
07/22 09Z,   0.80,   1.34,  99.90,   2.00,  -0.14,
07/22 10Z,   0.80,  -0.75,  99.90,  -0.08,  -0.14,
07/22 11Z,   0.80,  -2.86,  99.90,  -2.20,  -0.14,
07/22 12Z,   0.70,  -4.53,  99.90,  -3.97,  -0.14,
07/22 13Z,   0.70,  -5.39,  99.90,  -4.83,  -0.14,  (min)
07/22 14Z,   0.80,  -5.37,  99.90,  -4.71,  -0.14,
07/22 15Z,   0.80,  -4.59,  99.90,  -3.93,  -0.14,
07/22 16Z,   0.80,  -3.25,  99.90,  -2.58,  -0.14,
07/22 17Z,   0.80,  -1.64,  99.90,  -0.97,  -0.14,
07/22 18Z,   0.80,  -0.14,  99.90,   0.52,  -0.14,
07/22 19Z,   0.80,   0.95,  99.90,   1.61,  -0.14,
07/22 20Z,   0.80,   1.56,  99.90,   2.22,  -0.14,
07/22 21Z,   0.80,   1.75,  99.90,   2.42,  -0.14,  (max)
07/22 22Z,   0.80,   1.58,  99.90,   2.24,  -0.14,
07/22 23Z,   0.80,   1.14,  99.90,   1.80,  -0.14,
07/23 00Z,   0.80,   0.67,  99.90,   1.34,  -0.14,
07/23 01Z,   0.80,   0.45,  99.90,   1.11,  -0.14,  (min)
07/23 02Z,   0.80,   0.60,  99.90,   1.27,  -0.14,
07/23 03Z,   0.80,   1.12,  99.90,   1.78,  -0.14,
07/23 04Z,   0.80,   1.92,  99.90,   2.58,  -0.14,
07/23 05Z,   0.80,   2.85,  99.90,   3.51,  -0.14,
07/23 06Z,   0.80,   3.60,  99.90,   4.26,  -0.14,