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 : 05/19/2026 15:21:58 GMT (units in feet HAT)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/18 00Z,   0.00,  -4.01,  -4.46,  99.90,  -0.45,
05/18 01Z,   0.00,  -2.16,  -2.72,  99.90,  -0.56,
05/18 02Z,   0.00,  -1.38,  -1.92,  99.90,  -0.54,  (max)
05/18 03Z,   0.00,  -1.52,  -2.02,  99.90,  -0.50,
05/18 04Z,   0.00,  -2.36,  -2.75,  99.90,  -0.39,
05/18 05Z,   0.00,  -3.66,  -3.81,  99.90,  -0.15,
05/18 06Z,   0.10,  -5.00,  -5.01,  99.90,  -0.11,
05/18 07Z,   0.10,  -5.85,  -5.80,  99.90,  -0.05,  (min)
05/18 08Z,   0.10,  -5.88,  -5.77,  99.90,   0.01,
05/18 09Z,   0.10,  -5.12,  -5.03,  99.90,  -0.01,
05/18 10Z,   0.10,  -3.93,  -3.92,  99.90,  -0.09,
05/18 11Z,   0.10,  -2.75,  -2.72,  99.90,  -0.07,
05/18 12Z,   0.00,  -2.04,  -1.88,  99.90,   0.16,  (max)
05/18 13Z,   0.00,  -2.23,  -1.94,  99.90,   0.29,
05/18 14Z,   0.00,  -3.54,  -3.17,  99.90,   0.37,
05/18 15Z,   0.00,  -5.89,  -5.47,  99.90,   0.42,
05/18 16Z,   0.00,  -8.95,  -8.63,  99.90,   0.32,
05/18 17Z,   0.00, -12.28, -12.17,  99.90,   0.11,
05/18 18Z,   0.00, -15.26, -15.21,  99.90,   0.05,
05/18 19Z,   0.00, -17.14, -17.16,  99.90,  -0.02,
05/18 20Z,   0.00, -17.34, -17.35,  99.90,  -0.01,  (min)
05/18 21Z,   0.00, -15.81, -15.63,  99.90,   0.18,
05/18 22Z,   0.00, -13.00, -13.01,  99.90,  -0.01,
05/18 23Z,   0.00,  -9.60,  -9.63,  99.90,  -0.03,
05/19 00Z,   0.10,  -6.27,  -6.48,  99.90,  -0.31,
05/19 01Z,   0.10,  -3.57,  -3.96,  99.90,  -0.49,
05/19 02Z,   0.10,  -1.87,  -2.29,  99.90,  -0.52,
05/19 03Z,   0.10,  -1.20,  -1.56,  99.90,  -0.46,  (max)
05/19 04Z,   0.20,  -1.42,  -1.78,  99.90,  -0.56,
05/19 05Z,   0.20,  -2.30,  -2.50,  99.90,  -0.40,
05/19 06Z,   0.20,  -3.61,  -3.54,  99.90,  -0.13,
05/19 07Z,   0.20,  -4.90,  -4.79,  99.90,  -0.09,
05/19 08Z,   0.20,  -5.68,  -5.57,  99.90,  -0.09,
05/19 09Z,   0.20,  -5.67,  -5.61,  99.90,  -0.14,  (min)
05/19 10Z,   0.20,  -4.96,  -4.96,  99.90,  -0.20,
05/19 11Z,   0.10,  -3.91,  -3.97,  99.90,  -0.16,
05/19 12Z,   0.10,  -2.92,  -2.99,  99.90,  -0.17,
05/19 13Z,   0.10,  -2.42,  -2.34,  99.90,  -0.02,  (max)
05/19 14Z,   0.10,  -2.80,  -2.60,  99.90,   0.10,
05/19 15Z,   0.10,  -4.22,  -3.95,  99.90,   0.17,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
05/19 16Z,   0.10,  -6.59,  99.90,  -6.35,   0.15,
05/19 17Z,   0.10,  -9.59,  99.90,  -9.38,   0.12,
05/19 18Z,   0.10, -12.77,  99.90, -12.58,   0.09,
05/19 19Z,   0.10, -15.50,  99.90, -15.33,   0.07,
05/19 20Z,   0.00, -17.04,  99.90, -17.01,   0.04,  (min)
05/19 21Z,   0.00, -16.93,  99.90, -16.92,   0.01,
05/19 22Z,   0.00, -15.19,  99.90, -15.20,  -0.01,
05/19 23Z,   0.00, -12.33,  99.90, -12.37,  -0.04,
05/20 00Z,   0.00,  -9.01,  99.90,  -9.08,  -0.07,
05/20 01Z,   0.00,  -5.85,  99.90,  -5.94,  -0.09,
05/20 02Z,   0.00,  -3.35,  99.90,  -3.47,  -0.12,
05/20 03Z,   0.00,  -1.81,  99.90,  -1.95,  -0.15,
05/20 04Z,   0.00,  -1.25,  99.90,  -1.40,  -0.15,  (max)
05/20 05Z,   0.00,  -1.51,  99.90,  -1.66,  -0.15,
05/20 06Z,   0.00,  -2.42,  99.90,  -2.57,  -0.15,
05/20 07Z,   0.00,  -3.72,  99.90,  -3.87,  -0.15,
05/20 08Z,   0.00,  -4.99,  99.90,  -5.14,  -0.15,
05/20 09Z,   0.10,  -5.74,  99.90,  -5.79,  -0.15,
05/20 10Z,   0.10,  -5.76,  99.90,  -5.81,  -0.15,  (min)
05/20 11Z,   0.00,  -5.17,  99.90,  -5.31,  -0.15,
05/20 12Z,   0.00,  -4.28,  99.90,  -4.43,  -0.15,
05/20 13Z,   0.00,  -3.45,  99.90,  -3.60,  -0.15,
05/20 14Z,   0.00,  -3.06,  99.90,  -3.21,  -0.15,  (max)
05/20 15Z,   0.00,  -3.48,  99.90,  -3.63,  -0.15,
05/20 16Z,   0.00,  -4.86,  99.90,  -5.01,  -0.15,
05/20 17Z,   0.00,  -7.10,  99.90,  -7.24,  -0.15,
05/20 18Z,   0.00,  -9.88,  99.90, -10.03,  -0.15,
05/20 19Z,   0.00, -12.78,  99.90, -12.93,  -0.15,
05/20 20Z,   0.00, -15.19,  99.90, -15.33,  -0.15,
05/20 21Z,   0.00, -16.42,  99.90, -16.57,  -0.15,  (min)
05/20 22Z,   0.00, -16.09,  99.90, -16.24,  -0.15,
05/20 23Z,   0.00, -14.31,  99.90, -14.46,  -0.15,
05/21 00Z,   0.00, -11.57,  99.90, -11.72,  -0.15,
05/21 01Z,   0.00,  -8.47,  99.90,  -8.61,  -0.15,
05/21 02Z,   0.00,  -5.55,  99.90,  -5.69,  -0.15,
05/21 03Z,   0.00,  -3.26,  99.90,  -3.41,  -0.15,
05/21 04Z,   0.00,  -1.88,  99.90,  -2.03,  -0.15,
05/21 05Z,   0.00,  -1.41,  99.90,  -1.56,  -0.15,  (max)
05/21 06Z,   0.00,  -1.72,  99.90,  -1.87,  -0.15,
05/21 07Z,   0.00,  -2.66,  99.90,  -2.80,  -0.15,
05/21 08Z,   0.10,  -3.97,  99.90,  -4.02,  -0.15,
05/21 09Z,   0.10,  -5.25,  99.90,  -5.30,  -0.15,
05/21 10Z,   0.10,  -6.05,  99.90,  -6.09,  -0.15,
05/21 11Z,   0.10,  -6.17,  99.90,  -6.22,  -0.15,  (min)
05/21 12Z,   0.10,  -5.74,  99.90,  -5.79,  -0.15,
05/21 13Z,   0.10,  -5.01,  99.90,  -5.06,  -0.15,
05/21 14Z,   0.10,  -4.28,  99.90,  -4.33,  -0.15,
05/21 15Z,   0.10,  -3.91,  99.90,  -3.96,  -0.15,  (max)
05/21 16Z,   0.10,  -4.24,  99.90,  -4.29,  -0.15,
05/21 17Z,   0.10,  -5.43,  99.90,  -5.48,  -0.15,
05/21 18Z,   0.10,  -7.38,  99.90,  -7.43,  -0.15,
05/21 19Z,   0.10,  -9.82,  99.90,  -9.87,  -0.15,
05/21 20Z,   0.10, -12.36,  99.90, -12.40,  -0.15,
05/21 21Z,   0.10, -14.42,  99.90, -14.46,  -0.15,
05/21 22Z,   0.10, -15.39,  99.90, -15.43,  -0.15,  (min)
05/21 23Z,   0.10, -14.95,  99.90, -15.00,  -0.15,
05/22 00Z,   0.10, -13.26,  99.90, -13.30,  -0.15,
05/22 01Z,   0.10, -10.75,  99.90, -10.80,  -0.15,
05/22 02Z,   0.10,  -7.93,  99.90,  -7.98,  -0.15,
05/22 03Z,   0.10,  -5.28,  99.90,  -5.33,  -0.15,
05/22 04Z,   0.10,  -3.21,  99.90,  -3.26,  -0.15,
05/22 05Z,   0.20,  -1.98,  99.90,  -1.92,  -0.15,
05/22 06Z,   0.20,  -1.59,  99.90,  -1.54,  -0.15,  (max)
05/22 07Z,   0.20,  -1.96,  99.90,  -1.91,  -0.15,
05/22 08Z,   0.20,  -2.96,  99.90,  -2.90,  -0.15,
05/22 09Z,   0.20,  -4.34,  99.90,  -4.29,  -0.15,
05/22 10Z,   0.30,  -5.71,  99.90,  -5.55,  -0.15,
05/22 11Z,   0.30,  -6.62,  99.90,  -6.47,  -0.15,
05/22 12Z,   0.30,  -6.92,  99.90,  -6.77,  -0.15,  (min)
05/22 13Z,   0.20,  -6.67,  99.90,  -6.62,  -0.15,
05/22 14Z,   0.20,  -6.06,  99.90,  -6.01,  -0.15,
05/22 15Z,   0.20,  -5.34,  99.90,  -5.29,  -0.15,
05/22 16Z,   0.20,  -4.87,  99.90,  -4.82,  -0.15,  (max)
05/22 17Z,   0.20,  -4.99,  99.90,  -4.94,  -0.15,
05/22 18Z,   0.20,  -5.87,  99.90,  -5.82,  -0.15,
05/22 19Z,   0.20,  -7.42,  99.90,  -7.37,  -0.15,
05/22 20Z,   0.30,  -9.44,  99.90,  -9.28,  -0.15,
05/22 21Z,   0.30, -11.56,  99.90, -11.41,  -0.15,
05/22 22Z,   0.30, -13.28,  99.90, -13.13,  -0.15,
05/22 23Z,   0.30, -14.05,  99.90, -13.90,  -0.15,  (min)
05/23 00Z,   0.30, -13.61,  99.90, -13.46,  -0.15,
05/23 01Z,   0.30, -12.10,  99.90, -11.95,  -0.15,
05/23 02Z,   0.30,  -9.88,  99.90,  -9.73,  -0.15,
05/23 03Z,   0.30,  -7.36,  99.90,  -7.21,  -0.15,
05/23 04Z,   0.30,  -4.97,  99.90,  -4.82,  -0.15,
05/23 05Z,   0.30,  -3.11,  99.90,  -2.95,  -0.15,
05/23 06Z,   0.30,  -2.02,  99.90,  -1.87,  -0.15,
05/23 07Z,  99.90,  -1.75,  99.90,  99.90,  -0.15,
05/23 08Z,  99.90,  -2.22,  99.90,  99.90,  -0.15,
05/23 09Z,  99.90,  -3.34,  99.90,  99.90,  -0.15,
05/23 10Z,  99.90,  -4.88,  99.90,  99.90,  -0.15,
05/23 11Z,  99.90,  -6.41,  99.90,  99.90,  -0.15,
05/23 12Z,  99.90,  -7.51,  99.90,  99.90,  -0.15,