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
#Port Townsend, WA : 04/22/2026 19:21:14 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/21 00Z,   0.70,   3.51,   3.77,  99.90,  -0.44,
04/21 01Z,   0.80,   5.51,   5.98,  99.90,  -0.33,
04/21 02Z,   0.90,   7.24,   7.72,  99.90,  -0.42,
04/21 03Z,   0.80,   8.40,   8.64,  99.90,  -0.56,
04/21 04Z,   0.80,   8.82,   9.07,  99.90,  -0.55,
04/21 05Z,   0.80,   8.59,   9.16,  99.90,  -0.23,  (max)
04/21 06Z,   0.80,   7.96,   8.71,  99.90,  -0.05,
04/21 07Z,   0.80,   7.28,   7.94,  99.90,  -0.14,
04/21 08Z,   0.70,   6.89,   7.61,  99.90,   0.02,  (min)
04/21 09Z,   0.80,   6.97,   7.74,  99.90,  -0.03,
04/21 10Z,   0.80,   7.34,   8.08,  99.90,  -0.06,
04/21 11Z,   0.80,   7.78,   8.57,  99.90,  -0.01,
04/21 12Z,   0.70,   8.13,   8.91,  99.90,   0.08,
04/21 13Z,   0.80,   8.34,   9.20,  99.90,   0.06,  (max)
04/21 14Z,   0.80,   8.22,   9.05,  99.90,   0.03,
04/21 15Z,   0.80,   7.44,   8.18,  99.90,  -0.06,
04/21 16Z,   0.80,   5.87,   6.60,  99.90,  -0.07,
04/21 17Z,   0.80,   3.68,   4.34,  99.90,  -0.14,
04/21 18Z,   0.90,   1.28,   1.89,  99.90,  -0.29,
04/21 19Z,   0.80,  -0.80,  -0.13,  99.90,  -0.13,
04/21 20Z,   0.90,  -2.08,  -1.43,  99.90,  -0.25,
04/21 21Z,   0.90,  -2.26,  -1.59,  99.90,  -0.23,  (min)
04/21 22Z,   1.00,  -1.46,  -0.88,  99.90,  -0.42,
04/21 23Z,   0.90,  -0.05,   0.47,  99.90,  -0.38,
04/22 00Z,   0.90,   1.67,   2.05,  99.90,  -0.52,
04/22 01Z,   1.00,   3.56,   3.97,  99.90,  -0.59,
04/22 02Z,   1.00,   5.48,   6.06,  99.90,  -0.42,
04/22 03Z,   0.90,   7.15,   7.76,  99.90,  -0.29,
04/22 04Z,   0.90,   8.27,   8.81,  99.90,  -0.36,
04/22 05Z,   0.90,   8.73,   9.21,  99.90,  -0.42,
04/22 06Z,   0.90,   8.60,   9.34,  99.90,  -0.16,  (max)
04/22 07Z,   0.90,   8.09,   8.91,  99.90,  -0.08,
04/22 08Z,   0.80,   7.50,   8.21,  99.90,  -0.09,
04/22 09Z,   0.90,   7.14,   7.89,  99.90,  -0.15,
04/22 10Z,   0.90,   7.13,   7.88,  99.90,  -0.15,  (min)
04/22 11Z,   0.80,   7.34,   8.02,  99.90,  -0.12,
04/22 12Z,   0.80,   7.58,   8.31,  99.90,  -0.07,
04/22 13Z,   0.90,   7.79,   8.54,  99.90,  -0.15,
04/22 14Z,   0.90,   7.90,   8.60,  99.90,  -0.20,  (max)
04/22 15Z,   0.80,   7.69,   8.36,  99.90,  -0.13,
04/22 16Z,   0.80,   6.89,   7.43,  99.90,  -0.26,
04/22 17Z,   0.80,   5.40,   5.91,  99.90,  -0.29,
04/22 18Z,   0.80,   3.42,   3.91,  99.90,  -0.31,
04/22 19Z,   0.70,   1.31,   1.67,  99.90,  -0.34,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/22 20Z,   0.70,  -0.50,  99.90,  -0.12,  -0.33,
04/22 21Z,   0.70,  -1.57,  99.90,  -1.18,  -0.31,
04/22 22Z,   0.70,  -1.68,  99.90,  -1.29,  -0.30,  (min)
04/22 23Z,   0.70,  -0.96,  99.90,  -0.55,  -0.29,
04/23 00Z,   0.60,   0.29,  99.90,   0.61,  -0.28,
04/23 01Z,   0.60,   1.84,  99.90,   2.17,  -0.27,
04/23 02Z,   0.70,   3.60,  99.90,   4.04,  -0.26,
04/23 03Z,   0.60,   5.42,  99.90,   5.77,  -0.25,
04/23 04Z,   0.60,   7.01,  99.90,   7.37,  -0.24,
04/23 05Z,   0.60,   8.10,  99.90,   8.48,  -0.22,
04/23 06Z,   0.60,   8.61,  99.90,   8.99,  -0.21,  (max)
04/23 07Z,   0.60,   8.57,  99.90,   8.97,  -0.20,
04/23 08Z,   0.60,   8.13,  99.90,   8.53,  -0.20,
04/23 09Z,   0.50,   7.54,  99.90,   7.84,  -0.20,
04/23 10Z,   0.50,   7.10,  99.90,   7.39,  -0.20,
04/23 11Z,   0.50,   6.93,  99.90,   7.23,  -0.20,  (min)
04/23 12Z,   0.60,   6.96,  99.90,   7.35,  -0.20,  (max)
04/23 13Z,   0.50,   7.05,  99.90,   7.34,  -0.20,  (min)
04/23 14Z,   0.50,   7.17,  99.90,   7.46,  -0.20,
04/23 15Z,   0.50,   7.25,  99.90,   7.55,  -0.20,  (max)
04/23 16Z,   0.50,   7.07,  99.90,   7.37,  -0.20,
04/23 17Z,   0.50,   6.38,  99.90,   6.68,  -0.20,
04/23 18Z,   0.40,   5.13,  99.90,   5.32,  -0.20,
04/23 19Z,   0.40,   3.47,  99.90,   3.67,  -0.20,
04/23 20Z,   0.50,   1.70,  99.90,   1.99,  -0.20,
04/23 21Z,   0.50,   0.15,  99.90,   0.45,  -0.20,
04/23 22Z,   0.40,  -0.79,  99.90,  -0.60,  -0.20,
04/23 23Z,   0.40,  -0.93,  99.90,  -0.73,  -0.20,  (min)
04/24 00Z,   0.50,  -0.35,  99.90,  -0.05,  -0.20,
04/24 01Z,   0.50,   0.70,  99.90,   1.00,  -0.20,
04/24 02Z,   0.50,   2.07,  99.90,   2.37,  -0.20,
04/24 03Z,   0.50,   3.70,  99.90,   3.99,  -0.20,
04/24 04Z,   0.50,   5.41,  99.90,   5.71,  -0.20,
04/24 05Z,   0.50,   6.93,  99.90,   7.22,  -0.20,
04/24 06Z,   0.50,   8.00,  99.90,   8.30,  -0.20,
04/24 07Z,   0.50,   8.54,  99.90,   8.84,  -0.20,  (max)
04/24 08Z,   0.50,   8.52,  99.90,   8.82,  -0.20,
04/24 09Z,   0.50,   8.04,  99.90,   8.34,  -0.20,
04/24 10Z,   0.50,   7.34,  99.90,   7.64,  -0.20,
04/24 11Z,   0.50,   6.73,  99.90,   7.03,  -0.20,
04/24 12Z,   0.50,   6.37,  99.90,   6.67,  -0.20,
04/24 13Z,   0.50,   6.23,  99.90,   6.53,  -0.20,
04/24 14Z,   0.50,   6.22,  99.90,   6.52,  -0.20,  (min)
04/24 15Z,   0.50,   6.34,  99.90,   6.63,  -0.20,
04/24 16Z,   0.60,   6.48,  99.90,   6.88,  -0.20,  (max)
04/24 17Z,   0.50,   6.44,  99.90,   6.74,  -0.20,
04/24 18Z,   0.50,   5.98,  99.90,   6.28,  -0.20,
04/24 19Z,   0.50,   5.06,  99.90,   5.36,  -0.20,
04/24 20Z,   0.50,   3.78,  99.90,   4.08,  -0.20,
04/24 21Z,   0.50,   2.33,  99.90,   2.63,  -0.20,
04/24 22Z,   0.50,   0.99,  99.90,   1.29,  -0.20,
04/24 23Z,   0.50,   0.11,  99.90,   0.40,  -0.20,
04/25 00Z,   0.50,  -0.10,  99.90,   0.20,  -0.20,  (min)
04/25 01Z,   0.60,   0.33,  99.90,   0.73,  -0.20,
04/25 02Z,   0.60,   1.21,  99.90,   1.61,  -0.20,
04/25 03Z,   0.60,   2.44,  99.90,   2.83,  -0.20,
04/25 04Z,   0.60,   3.95,  99.90,   4.34,  -0.20,
04/25 05Z,   0.60,   5.57,  99.90,   5.96,  -0.20,
04/25 06Z,   0.60,   7.01,  99.90,   7.41,  -0.20,
04/25 07Z,   0.60,   8.05,  99.90,   8.44,  -0.20,
04/25 08Z,   0.60,   8.54,  99.90,   8.94,  -0.20,  (max)
04/25 09Z,   0.60,   8.43,  99.90,   8.83,  -0.20,
04/25 10Z,   0.60,   7.78,  99.90,   8.17,  -0.20,
04/25 11Z,   0.60,   6.85,  99.90,   7.25,  -0.20,
04/25 12Z,   0.70,   6.02,  99.90,   6.52,  -0.20,
04/25 13Z,   0.70,   5.49,  99.90,   5.98,  -0.20,
04/25 14Z,   0.60,   5.23,  99.90,   5.63,  -0.20,  (min)
04/25 15Z,   0.70,   5.21,  99.90,   5.71,  -0.20,
04/25 16Z,   0.70,   5.40,  99.90,   5.90,  -0.20,
04/25 17Z,   0.70,   5.70,  99.90,   6.19,  -0.20,
04/25 18Z,   0.70,   5.88,  99.90,   6.38,  -0.20,  (max)
04/25 19Z,   0.70,   5.74,  99.90,   6.23,  -0.20,
04/25 20Z,   0.70,   5.20,  99.90,   5.70,  -0.20,
04/25 21Z,   0.70,   4.29,  99.90,   4.79,  -0.20,
04/25 22Z,   0.70,   3.11,  99.90,   3.60,  -0.20,
04/25 23Z,   0.80,   1.90,  99.90,   2.50,  -0.20,
04/26 00Z,   0.80,   1.03,  99.90,   1.63,  -0.20,
04/26 01Z,   0.80,   0.77,  99.90,   1.37,  -0.20,  (min)
04/26 02Z,   0.80,   1.09,  99.90,   1.69,  -0.20,
04/26 03Z,   0.80,   1.86,  99.90,   2.45,  -0.20,
04/26 04Z,   0.80,   2.99,  99.90,   3.59,  -0.20,
04/26 05Z,   0.80,   4.42,  99.90,   5.01,  -0.20,
04/26 06Z,   0.80,   5.94,  99.90,   6.54,  -0.20,
04/26 07Z,   0.80,   7.29,  99.90,   7.88,  -0.20,
04/26 08Z,   0.80,   8.21,  99.90,   8.81,  -0.20,
04/26 09Z,   0.80,   8.54,  99.90,   9.14,  -0.20,  (max)
04/26 10Z,   0.80,   8.19,  99.90,   8.79,  -0.20,
04/26 11Z,   0.80,   7.24,  99.90,   7.83,  -0.20,
04/26 12Z,   0.90,   6.03,  99.90,   6.72,  -0.20,