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 : 10/06/2026 03:21:53 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/04 12Z,   0.70,  -0.39,  -0.03,  99.90,  -0.34,
10/04 13Z,   0.70,  -0.37,   0.03,  99.90,  -0.30,  (min)
10/04 14Z,   0.70,   0.69,   1.01,  99.90,  -0.38,
10/04 15Z,   0.70,   2.46,   2.69,  99.90,  -0.47,
10/04 16Z,   0.70,   4.59,   4.99,  99.90,  -0.30,
10/04 17Z,   0.70,   6.74,   7.36,  99.90,  -0.08,
10/04 18Z,   0.70,   8.55,   9.26,  99.90,   0.01,
10/04 19Z,   0.70,   9.81,  10.61,  99.90,   0.10,
10/04 20Z,   0.70,  10.47,  11.23,  99.90,   0.06,  (max)
10/04 21Z,   0.70,  10.60,  11.19,  99.90,  -0.11,
10/04 22Z,   0.70,  10.25,  10.70,  99.90,  -0.25,
10/04 23Z,   0.70,   9.47,   9.88,  99.90,  -0.29,
10/05 00Z,   0.80,   8.52,   8.90,  99.90,  -0.42,
10/05 01Z,   0.80,   7.73,   7.97,  99.90,  -0.56,
10/05 02Z,   0.80,   7.31,   7.50,  99.90,  -0.61,  (min)
10/05 03Z,   0.80,   7.30,   7.56,  99.90,  -0.54,
10/05 04Z,   0.80,   7.64,   7.96,  99.90,  -0.48,
10/05 05Z,   0.80,   8.18,   8.49,  99.90,  -0.49,
10/05 06Z,   0.80,   8.66,   8.94,  99.90,  -0.52,
10/05 07Z,   0.80,   8.73,   9.05,  99.90,  -0.48,  (max)
10/05 08Z,   0.80,   8.15,   8.59,  99.90,  -0.36,
10/05 09Z,   0.80,   6.95,   7.45,  99.90,  -0.30,
10/05 10Z,   0.80,   5.25,   5.79,  99.90,  -0.26,
10/05 11Z,   0.80,   3.27,   3.78,  99.90,  -0.29,
10/05 12Z,   0.80,   1.42,   1.86,  99.90,  -0.36,
10/05 13Z,   0.80,   0.21,   0.55,  99.90,  -0.46,
10/05 14Z,   0.80,  -0.00,   0.20,  99.90,  -0.60,  (min)
10/05 15Z,   0.80,   0.80,   0.97,  99.90,  -0.63,
10/05 16Z,   0.80,   2.38,   2.50,  99.90,  -0.68,
10/05 17Z,   0.80,   4.46,   4.73,  99.90,  -0.53,
10/05 18Z,   0.80,   6.66,   7.18,  99.90,  -0.28,
10/05 19Z,   0.80,   8.59,   9.32,  99.90,  -0.07,
10/05 20Z,   0.80,   9.99,  10.75,  99.90,  -0.04,
10/05 21Z,   0.80,  10.75,  11.43,  99.90,  -0.12,  (max)
10/05 22Z,   0.80,  10.88,  11.31,  99.90,  -0.37,
10/05 23Z,   0.80,  10.38,  10.72,  99.90,  -0.46,
10/06 00Z,   0.80,   9.31,   9.71,  99.90,  -0.40,
10/06 01Z,   0.80,   8.00,   8.36,  99.90,  -0.44,
10/06 02Z,   0.80,   6.87,   7.18,  99.90,  -0.49,
10/06 03Z,   0.80,   6.20,   6.50,  99.90,  -0.50,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
10/06 04Z,   0.80,   6.11,  99.90,   6.42,  -0.49,  (min)
10/06 05Z,   0.80,   6.58,  99.90,   6.90,  -0.48,
10/06 06Z,   0.80,   7.42,  99.90,   7.75,  -0.47,
10/06 07Z,   0.80,   8.27,  99.90,   8.62,  -0.45,
10/06 08Z,   0.80,   8.72,  99.90,   9.08,  -0.44,  (max)
10/06 09Z,   0.80,   8.50,  99.90,   8.87,  -0.43,
10/06 10Z,   0.80,   7.57,  99.90,   7.95,  -0.42,
10/06 11Z,   0.80,   6.01,  99.90,   6.41,  -0.41,
10/06 12Z,   0.70,   4.05,  99.90,   4.35,  -0.39,
10/06 13Z,   0.70,   2.10,  99.90,   2.42,  -0.38,
10/06 14Z,   0.80,   0.73,  99.90,   1.16,  -0.37,
10/06 15Z,   0.70,   0.34,  99.90,   0.68,  -0.36,  (min)
10/06 16Z,   0.70,   1.01,  99.90,   1.35,  -0.36,
10/06 17Z,   0.70,   2.55,  99.90,   2.89,  -0.36,
10/06 18Z,   0.70,   4.69,  99.90,   5.03,  -0.36,
10/06 19Z,   0.70,   7.00,  99.90,   7.34,  -0.36,
10/06 20Z,   0.70,   9.02,  99.90,   9.36,  -0.36,
10/06 21Z,   0.70,  10.43,  99.90,  10.77,  -0.36,
10/06 22Z,   0.70,  11.11,  99.90,  11.45,  -0.36,  (max)
10/06 23Z,   0.70,  11.02,  99.90,  11.36,  -0.36,
10/07 00Z,   0.70,  10.15,  99.90,  10.50,  -0.36,
10/07 01Z,   0.70,   8.65,  99.90,   9.00,  -0.36,
10/07 02Z,   0.70,   6.94,  99.90,   7.28,  -0.36,
10/07 03Z,   0.70,   5.53,  99.90,   5.87,  -0.36,
10/07 04Z,   0.70,   4.79,  99.90,   5.13,  -0.36,  (min)
10/07 05Z,   0.70,   4.83,  99.90,   5.18,  -0.36,
10/07 06Z,   0.70,   5.62,  99.90,   5.96,  -0.36,
10/07 07Z,   0.70,   6.89,  99.90,   7.23,  -0.36,
10/07 08Z,   0.70,   8.16,  99.90,   8.50,  -0.36,
10/07 09Z,   0.70,   8.95,  99.90,   9.29,  -0.36,
10/07 10Z,   0.70,   8.99,  99.90,   9.33,  -0.36,  (max)
10/07 11Z,   0.70,   8.22,  99.90,   8.56,  -0.36,
10/07 12Z,   0.70,   6.72,  99.90,   7.06,  -0.36,
10/07 13Z,   0.70,   4.70,  99.90,   5.04,  -0.36,
10/07 14Z,   0.70,   2.66,  99.90,   3.00,  -0.36,
10/07 15Z,   0.70,   1.21,  99.90,   1.55,  -0.36,
10/07 16Z,   0.70,   0.79,  99.90,   1.13,  -0.36,  (min)
10/07 17Z,   0.70,   1.48,  99.90,   1.83,  -0.36,
10/07 18Z,   0.70,   3.13,  99.90,   3.47,  -0.36,
10/07 19Z,   0.70,   5.39,  99.90,   5.73,  -0.36,
10/07 20Z,   0.70,   7.76,  99.90,   8.11,  -0.36,
10/07 21Z,   0.70,   9.75,  99.90,  10.09,  -0.36,
10/07 22Z,   0.70,  10.98,  99.90,  11.32,  -0.36,
10/07 23Z,   0.70,  11.35,  99.90,  11.69,  -0.36,  (max)
10/08 00Z,   0.70,  10.83,  99.90,  11.17,  -0.36,
10/08 01Z,   0.70,   9.44,  99.90,   9.78,  -0.36,
10/08 02Z,   0.70,   7.46,  99.90,   7.80,  -0.36,
10/08 03Z,   0.70,   5.41,  99.90,   5.75,  -0.36,
10/08 04Z,   0.70,   3.91,  99.90,   4.25,  -0.36,
10/08 05Z,   0.70,   3.31,  99.90,   3.65,  -0.36,  (min)
10/08 06Z,   0.70,   3.71,  99.90,   4.05,  -0.36,
10/08 07Z,   0.70,   4.97,  99.90,   5.31,  -0.36,
10/08 08Z,   0.70,   6.69,  99.90,   7.03,  -0.36,
10/08 09Z,   0.70,   8.32,  99.90,   8.66,  -0.36,
10/08 10Z,   0.70,   9.35,  99.90,   9.69,  -0.36,
10/08 11Z,   0.70,   9.52,  99.90,   9.86,  -0.36,  (max)
10/08 12Z,   0.70,   8.80,  99.90,   9.14,  -0.36,
10/08 13Z,   0.70,   7.26,  99.90,   7.61,  -0.36,
10/08 14Z,   0.70,   5.20,  99.90,   5.54,  -0.36,
10/08 15Z,   0.70,   3.15,  99.90,   3.49,  -0.36,
10/08 16Z,   0.70,   1.76,  99.90,   2.10,  -0.36,
10/08 17Z,   0.70,   1.47,  99.90,   1.81,  -0.36,  (min)
10/08 18Z,   0.70,   2.34,  99.90,   2.68,  -0.36,
10/08 19Z,   0.70,   4.15,  99.90,   4.49,  -0.36,
10/08 20Z,   0.70,   6.49,  99.90,   6.83,  -0.36,
10/08 21Z,   0.70,   8.81,  99.90,   9.15,  -0.36,
10/08 22Z,   0.70,  10.55,  99.90,  10.89,  -0.36,
10/08 23Z,   0.80,  11.39,  99.90,  11.83,  -0.36,  (max)
10/09 00Z,   0.80,  11.25,  99.90,  11.69,  -0.36,
10/09 01Z,   0.80,  10.14,  99.90,  10.58,  -0.36,
10/09 02Z,   0.80,   8.19,  99.90,   8.63,  -0.36,
10/09 03Z,   0.80,   5.80,  99.90,   6.24,  -0.36,
10/09 04Z,   0.80,   3.62,  99.90,   4.06,  -0.36,
10/09 05Z,   0.80,   2.26,  99.90,   2.70,  -0.36,
10/09 06Z,   0.80,   2.04,  99.90,   2.49,  -0.36,  (min)
10/09 07Z,   0.80,   2.96,  99.90,   3.40,  -0.36,
10/09 08Z,   0.80,   4.73,  99.90,   5.17,  -0.36,
10/09 09Z,   0.80,   6.85,  99.90,   7.29,  -0.36,
10/09 10Z,   0.80,   8.71,  99.90,   9.15,  -0.36,
10/09 11Z,   0.80,   9.82,  99.90,  10.27,  -0.36,
10/09 12Z,   0.80,   9.99,  99.90,  10.43,  -0.36,  (max)
10/09 13Z,   0.90,   9.22,  99.90,   9.76,  -0.36,
10/09 14Z,   0.90,   7.64,  99.90,   8.18,  -0.36,
10/09 15Z,   0.90,   5.58,  99.90,   6.12,  -0.36,
10/09 16Z,   0.90,   3.65,  99.90,   4.19,  -0.36,
10/09 17Z,   0.90,   2.48,  99.90,   3.02,  -0.36,
10/09 18Z,   0.90,   2.46,  99.90,   3.00,  -0.36,
10/09 19Z,  99.90,   3.56,  99.90,  99.90,  -0.36,
10/09 20Z,  99.90,   5.50,  99.90,  99.90,  -0.36,
10/09 21Z,  99.90,   7.80,  99.90,  99.90,  -0.36,
10/09 22Z,  99.90,   9.86,  99.90,  99.90,  -0.36,
10/09 23Z,  99.90,  11.16,  99.90,  99.90,  -0.36,
10/10 00Z,  99.90,  11.43,  99.90,  99.90,  -0.36,