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 : 08/13/2026 02:22:44 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/11 06Z,   0.40,  -5.94,  -5.39,  99.90,   0.15,  (min)
08/11 07Z,   0.50,  -5.28,  -4.72,  99.90,   0.06,
08/11 08Z,   0.40,  -4.22,  -3.78,  99.90,   0.04,
08/11 09Z,   0.40,  -3.17,  -2.84,  99.90,  -0.07,
08/11 10Z,   0.40,  -2.64,  -2.23,  99.90,   0.01,  (max)
08/11 11Z,   0.40,  -3.00,  -2.49,  99.90,   0.11,
08/11 12Z,   0.50,  -4.35,  -3.79,  99.90,   0.06,
08/11 13Z,   0.50,  -6.57,  -6.01,  99.90,   0.06,
08/11 14Z,   0.50,  -9.41,  -8.93,  99.90,  -0.02,
08/11 15Z,   0.50, -12.39, -12.09,  99.90,  -0.20,
08/11 16Z,   0.50, -14.84, -14.65,  99.90,  -0.31,
08/11 17Z,   0.50, -16.07, -16.05,  99.90,  -0.48,  (min)
08/11 18Z,   0.50, -15.79, -15.74,  99.90,  -0.45,
08/11 19Z,   0.50, -14.13, -13.96,  99.90,  -0.33,
08/11 20Z,   0.50, -11.52, -11.32,  99.90,  -0.30,
08/11 21Z,   0.50,  -8.52,  -8.16,  99.90,  -0.14,
08/11 22Z,   0.50,  -5.69,  -5.32,  99.90,  -0.13,
08/11 23Z,   0.50,  -3.53,  -3.21,  99.90,  -0.18,
08/12 00Z,   0.50,  -2.23,  -2.05,  99.90,  -0.32,
08/12 01Z,   0.50,  -1.81,  -1.75,  99.90,  -0.44,  (max)
08/12 02Z,   0.50,  -2.22,  -2.26,  99.90,  -0.54,
08/12 03Z,   0.50,  -3.38,  -3.23,  99.90,  -0.35,
08/12 04Z,   0.50,  -4.91,  -4.53,  99.90,  -0.12,
08/12 05Z,   0.50,  -6.25,  -5.82,  99.90,  -0.07,
08/12 06Z,   0.50,  -6.90,  -6.46,  99.90,  -0.06,  (min)
08/12 07Z,   0.50,  -6.70,  -6.18,  99.90,   0.02,
08/12 08Z,   0.50,  -5.77,  -5.24,  99.90,   0.03,
08/12 09Z,   0.50,  -4.44,  -3.99,  99.90,  -0.05,
08/12 10Z,   0.50,  -3.19,  -2.73,  99.90,  -0.04,
08/12 11Z,   0.50,  -2.57,  -1.99,  99.90,   0.08,  (max)
08/12 12Z,   0.50,  -2.95,  -2.26,  99.90,   0.19,
08/12 13Z,   0.50,  -4.38,  -3.69,  99.90,   0.19,
08/12 14Z,   0.50,  -6.72,  -5.99,  99.90,   0.23,
08/12 15Z,   0.50,  -9.66,  -9.09,  99.90,   0.07,
08/12 16Z,   0.50, -12.68, -12.27,  99.90,  -0.09,
08/12 17Z,   0.50, -15.02, -14.75,  99.90,  -0.23,
08/12 18Z,   0.50, -16.00, -15.96,  99.90,  -0.46,  (min)
08/12 19Z,   0.50, -15.40, -15.27,  99.90,  -0.37,
08/12 20Z,   0.50, -13.44, -13.22,  99.90,  -0.28,
08/12 21Z,   0.50, -10.59, -10.28,  99.90,  -0.19,
08/12 22Z,   0.50,  -7.47,  -7.09,  99.90,  -0.12,
08/12 23Z,   0.60,  -4.70,  -4.34,  99.90,  -0.24,
08/13 00Z,   0.60,  -2.73,  -2.44,  99.90,  -0.31,
08/13 01Z,   0.60,  -1.75,  -1.60,  99.90,  -0.45,  (max)
08/13 02Z,   0.60,  -1.74,  -1.76,  99.90,  -0.62,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
08/13 03Z,   0.60,  -2.63,  99.90,  -2.61,  -0.58,
08/13 04Z,   0.60,  -4.22,  99.90,  -4.17,  -0.55,
08/13 05Z,   0.60,  -6.03,  99.90,  -5.94,  -0.51,
08/13 06Z,   0.60,  -7.42,  99.90,  -7.29,  -0.47,
08/13 07Z,   0.60,  -7.93,  99.90,  -7.77,  -0.44,  (min)
08/13 08Z,   0.60,  -7.46,  99.90,  -7.26,  -0.40,
08/13 09Z,   0.60,  -6.24,  99.90,  -6.00,  -0.36,
08/13 10Z,   0.70,  -4.66,  99.90,  -4.29,  -0.33,
08/13 11Z,   0.70,  -3.28,  99.90,  -2.87,  -0.29,
08/13 12Z,   0.70,  -2.65,  99.90,  -2.21,  -0.25,  (max)
08/13 13Z,   0.70,  -3.09,  99.90,  -2.60,  -0.22,
08/13 14Z,   0.70,  -4.59,  99.90,  -4.07,  -0.18,
08/13 15Z,   0.70,  -6.98,  99.90,  -6.46,  -0.18,
08/13 16Z,   0.70,  -9.91,  99.90,  -9.39,  -0.18,
08/13 17Z,   0.70, -12.79,  99.90, -12.27,  -0.18,
08/13 18Z,   0.70, -14.83,  99.90, -14.31,  -0.18,
08/13 19Z,   0.70, -15.43,  99.90, -14.91,  -0.18,  (min)
08/13 20Z,   0.70, -14.45,  99.90, -13.93,  -0.18,
08/13 21Z,   0.70, -12.21,  99.90, -11.69,  -0.18,
08/13 22Z,   0.70,  -9.23,  99.90,  -8.71,  -0.18,
08/13 23Z,   0.70,  -6.17,  99.90,  -5.65,  -0.18,
08/14 00Z,   0.70,  -3.63,  99.90,  -3.11,  -0.18,
08/14 01Z,   0.70,  -2.04,  99.90,  -1.52,  -0.18,
08/14 02Z,   0.70,  -1.52,  99.90,  -1.00,  -0.18,  (max)
08/14 03Z,   0.70,  -2.03,  99.90,  -1.51,  -0.18,
08/14 04Z,   0.80,  -3.42,  99.90,  -2.79,  -0.18,
08/14 05Z,   0.80,  -5.38,  99.90,  -4.76,  -0.18,
08/14 06Z,   0.80,  -7.35,  99.90,  -6.73,  -0.18,
08/14 07Z,   0.80,  -8.67,  99.90,  -8.05,  -0.18,
08/14 08Z,   0.80,  -8.93,  99.90,  -8.31,  -0.18,  (min)
08/14 09Z,   0.80,  -8.17,  99.90,  -7.55,  -0.18,
08/14 10Z,   0.80,  -6.68,  99.90,  -6.05,  -0.18,
08/14 11Z,   0.80,  -4.93,  99.90,  -4.31,  -0.18,
08/14 12Z,   0.80,  -3.51,  99.90,  -2.88,  -0.18,
08/14 13Z,   0.70,  -2.92,  99.90,  -2.39,  -0.18,  (max)
08/14 14Z,   0.80,  -3.41,  99.90,  -2.79,  -0.18,
08/14 15Z,   0.70,  -4.94,  99.90,  -4.42,  -0.18,
08/14 16Z,   0.70,  -7.27,  99.90,  -6.75,  -0.18,
08/14 17Z,   0.70, -10.03,  99.90,  -9.51,  -0.18,
08/14 18Z,   0.70, -12.58,  99.90, -12.06,  -0.18,
08/14 19Z,   0.70, -14.18,  99.90, -13.65,  -0.18,
08/14 20Z,   0.70, -14.31,  99.90, -13.79,  -0.18,  (min)
08/14 21Z,   0.70, -12.98,  99.90, -12.46,  -0.18,
08/14 22Z,   0.70, -10.57,  99.90, -10.05,  -0.18,
08/14 23Z,   0.70,  -7.64,  99.90,  -7.12,  -0.18,
08/15 00Z,   0.70,  -4.82,  99.90,  -4.30,  -0.18,
08/15 01Z,   0.70,  -2.69,  99.90,  -2.17,  -0.18,
08/15 02Z,   0.70,  -1.61,  99.90,  -1.09,  -0.18,  (max)
08/15 03Z,   0.70,  -1.65,  99.90,  -1.13,  -0.18,
08/15 04Z,   0.70,  -2.69,  99.90,  -2.17,  -0.18,
08/15 05Z,   0.70,  -4.53,  99.90,  -4.01,  -0.18,
08/15 06Z,   0.70,  -6.76,  99.90,  -6.24,  -0.18,
08/15 07Z,   0.70,  -8.74,  99.90,  -8.22,  -0.18,
08/15 08Z,   0.70,  -9.86,  99.90,  -9.33,  -0.18,  (min)
08/15 09Z,   0.70,  -9.82,  99.90,  -9.30,  -0.18,
08/15 10Z,   0.70,  -8.77,  99.90,  -8.25,  -0.18,
08/15 11Z,   0.70,  -7.08,  99.90,  -6.56,  -0.18,
08/15 12Z,   0.70,  -5.25,  99.90,  -4.73,  -0.18,
08/15 13Z,   0.70,  -3.85,  99.90,  -3.33,  -0.18,
08/15 14Z,   0.60,  -3.32,  99.90,  -2.90,  -0.18,  (max)
08/15 15Z,   0.60,  -3.85,  99.90,  -3.43,  -0.18,
08/15 16Z,   0.60,  -5.31,  99.90,  -4.89,  -0.18,
08/15 17Z,   0.60,  -7.45,  99.90,  -7.03,  -0.18,
08/15 18Z,   0.60,  -9.88,  99.90,  -9.46,  -0.18,
08/15 19Z,   0.60, -11.96,  99.90, -11.54,  -0.18,
08/15 20Z,   0.60, -13.03,  99.90, -12.61,  -0.18,  (min)
08/15 21Z,   0.60, -12.73,  99.90, -12.30,  -0.18,
08/15 22Z,   0.60, -11.16,  99.90, -10.74,  -0.18,
08/15 23Z,   0.60,  -8.75,  99.90,  -8.33,  -0.18,
08/16 00Z,   0.60,  -6.06,  99.90,  -5.63,  -0.18,
08/16 01Z,   0.60,  -3.65,  99.90,  -3.23,  -0.18,
08/16 02Z,   0.60,  -2.06,  99.90,  -1.64,  -0.18,
08/16 03Z,   0.60,  -1.57,  99.90,  -1.15,  -0.18,  (max)
08/16 04Z,   0.60,  -2.17,  99.90,  -1.75,  -0.18,
08/16 05Z,   0.60,  -3.69,  99.90,  -3.27,  -0.18,
08/16 06Z,   0.60,  -5.86,  99.90,  -5.44,  -0.18,
08/16 07Z,   0.60,  -8.19,  99.90,  -7.77,  -0.18,
08/16 08Z,   0.60, -10.04,  99.90,  -9.62,  -0.18,
08/16 09Z,   0.60, -10.87,  99.90, -10.45,  -0.18,  (min)
08/16 10Z,   0.60, -10.53,  99.90, -10.10,  -0.18,
08/16 11Z,   0.60,  -9.24,  99.90,  -8.82,  -0.18,
08/16 12Z,   0.50,  -7.43,  99.90,  -7.11,  -0.18,
08/16 13Z,   0.50,  -5.60,  99.90,  -5.28,  -0.18,
08/16 14Z,   0.50,  -4.26,  99.90,  -3.94,  -0.18,
08/16 15Z,   0.50,  -3.79,  99.90,  -3.47,  -0.18,  (max)
08/16 16Z,   0.50,  -4.28,  99.90,  -3.96,  -0.18,
08/16 17Z,   0.50,  -5.58,  99.90,  -5.25,  -0.18,
08/16 18Z,   0.50,  -7.40,  99.90,  -7.08,  -0.18,