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 : 04/16/2026 07:22:46 GMT (units in feet MHHW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/14 12Z,   0.50,  -1.48,  -0.87,  99.90,   0.11,
04/14 13Z,   0.50,  -2.70,  -2.13,  99.90,   0.07,
04/14 14Z,   0.50,  -3.97,  -3.45,  99.90,   0.02,
04/14 15Z,   0.50,  -4.85,  -4.41,  99.90,  -0.06,
04/14 16Z,   0.60,  -5.14,  -4.72,  99.90,  -0.18,  (min)
04/14 17Z,   0.60,  -4.93,  -4.43,  99.90,  -0.10,
04/14 18Z,   0.80,  -4.39,  -3.82,  99.90,  -0.23,
04/14 19Z,   0.70,  -3.66,  -3.24,  99.90,  -0.28,
04/14 20Z,   0.70,  -2.85,  -2.44,  99.90,  -0.29,
04/14 21Z,   0.90,  -2.22,  -1.77,  99.90,  -0.45,
04/14 22Z,   1.00,  -2.01,  -1.52,  99.90,  -0.51,  (max)
04/14 23Z,   0.90,  -2.33,  -1.74,  99.90,  -0.31,
04/15 00Z,   0.90,  -3.15,  -2.47,  99.90,  -0.22,
04/15 01Z,   0.90,  -4.30,  -3.59,  99.90,  -0.19,
04/15 02Z,   0.90,  -5.49,  -4.75,  99.90,  -0.16,
04/15 03Z,   1.00,  -6.27,  -5.65,  99.90,  -0.38,
04/15 04Z,   1.00,  -6.35,  -5.77,  99.90,  -0.42,  (min)
04/15 05Z,   1.00,  -5.79,  -5.15,  99.90,  -0.36,
04/15 06Z,   1.00,  -4.81,  -4.23,  99.90,  -0.42,
04/15 07Z,   0.90,  -3.59,  -3.13,  99.90,  -0.44,
04/15 08Z,   0.90,  -2.28,  -1.68,  99.90,  -0.30,
04/15 09Z,   1.00,  -1.12,  -0.54,  99.90,  -0.42,
04/15 10Z,   1.00,  -0.43,   0.20,  99.90,  -0.37,
04/15 11Z,   1.00,  -0.44,   0.21,  99.90,  -0.35,  (max)
04/15 12Z,   0.90,  -1.20,  -0.39,  99.90,  -0.09,
04/15 13Z,   0.90,  -2.57,  -1.68,  99.90,  -0.01,
04/15 14Z,   0.80,  -4.21,  -3.35,  99.90,   0.06,
04/15 15Z,   0.80,  -5.64,  -4.95,  99.90,  -0.11,
04/15 16Z,   0.80,  -6.40,  -5.67,  99.90,  -0.07,  (min)
04/15 17Z,   0.90,  -6.37,  -5.64,  99.90,  -0.17,
04/15 18Z,   0.90,  -5.77,  -5.00,  99.90,  -0.13,
04/15 19Z,   0.80,  -4.85,  -4.18,  99.90,  -0.13,
04/15 20Z,   0.80,  -3.75,  -3.35,  99.90,  -0.40,
04/15 21Z,   0.80,  -2.64,  -2.14,  99.90,  -0.30,
04/15 22Z,   0.80,  -1.79,  -1.31,  99.90,  -0.32,
04/15 23Z,   0.70,  -1.46,  -0.97,  99.90,  -0.21,  (max)
04/16 00Z,   0.80,  -1.76,  -1.30,  99.90,  -0.34,
04/16 01Z,   0.90,  -2.63,  -2.06,  99.90,  -0.33,
04/16 02Z,   0.90,  -3.84,  -3.35,  99.90,  -0.41,
04/16 03Z,   0.80,  -4.99,  -4.62,  99.90,  -0.43,
04/16 04Z,   0.70,  -5.61,  -5.34,  99.90,  -0.43,  (min)
04/16 05Z,   0.70,  -5.48,  -5.15,  99.90,  -0.37,
04/16 06Z,   0.70,  -4.74,  -4.46,  99.90,  -0.42,
04/16 07Z,   0.60,  -3.68,  -3.49,  99.90,  -0.41,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/16 08Z,   0.60,  -2.49,  99.90,  -2.28,  -0.39,
04/16 09Z,   0.50,  -1.31,  99.90,  -1.19,  -0.37,
04/16 10Z,   0.50,  -0.43,  99.90,  -0.29,  -0.35,
04/16 11Z,   0.50,  -0.18,  99.90,  -0.02,  -0.34,  (max)
04/16 12Z,   0.50,  -0.77,  99.90,  -0.58,  -0.32,
04/16 13Z,   0.50,  -2.14,  99.90,  -1.94,  -0.30,
04/16 14Z,   0.40,  -4.04,  99.90,  -3.92,  -0.28,
04/16 15Z,   0.40,  -5.98,  99.90,  -5.85,  -0.26,
04/16 16Z,   0.40,  -7.40,  99.90,  -7.24,  -0.25,
04/16 17Z,   0.40,  -7.88,  99.90,  -7.71,  -0.23,  (min)
04/16 18Z,   0.30,  -7.46,  99.90,  -7.37,  -0.21,
04/16 19Z,   0.30,  -6.44,  99.90,  -6.33,  -0.19,
04/16 20Z,   0.40,  -5.13,  99.90,  -4.92,  -0.19,
04/16 21Z,   0.40,  -3.69,  99.90,  -3.48,  -0.19,
04/16 22Z,   0.30,  -2.29,  99.90,  -2.19,  -0.19,
04/16 23Z,   0.30,  -1.26,  99.90,  -1.16,  -0.19,
04/17 00Z,   0.30,  -0.87,  99.90,  -0.76,  -0.19,  (max)
04/17 01Z,   0.40,  -1.19,  99.90,  -0.98,  -0.19,
04/17 02Z,   0.30,  -2.10,  99.90,  -1.99,  -0.19,
04/17 03Z,   0.30,  -3.30,  99.90,  -3.20,  -0.19,
04/17 04Z,   0.40,  -4.33,  99.90,  -4.12,  -0.19,
04/17 05Z,   0.40,  -4.74,  99.90,  -4.53,  -0.19,  (min)
04/17 06Z,   0.40,  -4.41,  99.90,  -4.20,  -0.19,
04/17 07Z,   0.40,  -3.57,  99.90,  -3.36,  -0.19,
04/17 08Z,   0.40,  -2.52,  99.90,  -2.31,  -0.19,
04/17 09Z,   0.30,  -1.45,  99.90,  -1.34,  -0.19,
04/17 10Z,   0.30,  -0.51,  99.90,  -0.40,  -0.19,
04/17 11Z,   0.30,  -0.01,  99.90,   0.10,  -0.19,  (max)
04/17 12Z,   0.40,  -0.28,  99.90,  -0.07,  -0.19,
04/17 13Z,   0.30,  -1.45,  99.90,  -1.35,  -0.19,
04/17 14Z,   0.30,  -3.39,  99.90,  -3.28,  -0.19,
04/17 15Z,   0.30,  -5.68,  99.90,  -5.57,  -0.19,
04/17 16Z,   0.30,  -7.74,  99.90,  -7.64,  -0.19,
04/17 17Z,   0.30,  -8.98,  99.90,  -8.88,  -0.19,
04/17 18Z,   0.30,  -9.10,  99.90,  -9.00,  -0.19,  (min)
04/17 19Z,   0.30,  -8.27,  99.90,  -8.16,  -0.19,
04/17 20Z,   0.30,  -6.87,  99.90,  -6.76,  -0.19,
04/17 21Z,   0.30,  -5.23,  99.90,  -5.12,  -0.19,
04/17 22Z,   0.30,  -3.50,  99.90,  -3.39,  -0.19,
04/17 23Z,   0.30,  -1.89,  99.90,  -1.79,  -0.19,
04/18 00Z,   0.40,  -0.75,  99.90,  -0.54,  -0.19,
04/18 01Z,   0.40,  -0.33,  99.90,  -0.12,  -0.19,  (max)
04/18 02Z,   0.40,  -0.67,  99.90,  -0.46,  -0.19,
04/18 03Z,   0.40,  -1.59,  99.90,  -1.38,  -0.19,
04/18 04Z,   0.40,  -2.72,  99.90,  -2.51,  -0.19,
04/18 05Z,   0.40,  -3.57,  99.90,  -3.36,  -0.19,
04/18 06Z,   0.40,  -3.77,  99.90,  -3.56,  -0.19,  (min)
04/18 07Z,   0.40,  -3.29,  99.90,  -3.08,  -0.19,
04/18 08Z,   0.40,  -2.43,  99.90,  -2.22,  -0.19,
04/18 09Z,   0.40,  -1.49,  99.90,  -1.29,  -0.19,
04/18 10Z,   0.40,  -0.63,  99.90,  -0.42,  -0.19,
04/18 11Z,   0.50,   0.01,  99.90,   0.31,  -0.19,
04/18 12Z,   0.50,   0.09,  99.90,   0.40,  -0.19,  (max)
04/18 13Z,   0.50,  -0.69,  99.90,  -0.38,  -0.19,
04/18 14Z,   0.50,  -2.39,  99.90,  -2.08,  -0.19,
04/18 15Z,   0.50,  -4.73,  99.90,  -4.43,  -0.19,
04/18 16Z,   0.60,  -7.23,  99.90,  -6.82,  -0.19,
04/18 17Z,   0.60,  -9.23,  99.90,  -8.82,  -0.19,
04/18 18Z,   0.50, -10.19,  99.90,  -9.88,  -0.19,  (min)
04/18 19Z,   0.60,  -9.93,  99.90,  -9.52,  -0.19,
04/18 20Z,   0.60,  -8.74,  99.90,  -8.33,  -0.19,
04/18 21Z,   0.60,  -7.07,  99.90,  -6.66,  -0.19,
04/18 22Z,   0.60,  -5.19,  99.90,  -4.78,  -0.19,
04/18 23Z,   0.60,  -3.27,  99.90,  -2.86,  -0.19,
04/19 00Z,   0.60,  -1.54,  99.90,  -1.13,  -0.19,
04/19 01Z,   0.60,  -0.35,  99.90,   0.06,  -0.19,
04/19 02Z,   0.60,   0.07,  99.90,   0.48,  -0.19,  (max)
04/19 03Z,   0.60,  -0.27,  99.90,   0.14,  -0.19,
04/19 04Z,   0.60,  -1.14,  99.90,  -0.73,  -0.19,
04/19 05Z,   0.60,  -2.13,  99.90,  -1.73,  -0.19,
04/19 06Z,   0.60,  -2.79,  99.90,  -2.39,  -0.19,
04/19 07Z,   0.60,  -2.82,  99.90,  -2.41,  -0.19,  (min)
04/19 08Z,   0.60,  -2.29,  99.90,  -1.88,  -0.19,
04/19 09Z,   0.60,  -1.51,  99.90,  -1.11,  -0.19,
04/19 10Z,   0.60,  -0.76,  99.90,  -0.35,  -0.19,
04/19 11Z,   0.60,  -0.13,  99.90,   0.28,  -0.19,
04/19 12Z,   0.60,   0.19,  99.90,   0.60,  -0.19,  (max)
04/19 13Z,   0.70,  -0.12,  99.90,   0.39,  -0.19,
04/19 14Z,   0.70,  -1.32,  99.90,  -0.81,  -0.19,
04/19 15Z,   0.70,  -3.38,  99.90,  -2.87,  -0.19,
04/19 16Z,   0.70,  -5.94,  99.90,  -5.43,  -0.19,
04/19 17Z,   0.70,  -8.44,  99.90,  -7.93,  -0.19,
04/19 18Z,   0.70, -10.24,  99.90,  -9.73,  -0.19,
04/19 19Z,   0.60, -10.88,  99.90, -10.47,  -0.19,  (min)
04/19 20Z,   0.60, -10.31,  99.90,  -9.90,  -0.19,
04/19 21Z,   0.60,  -8.90,  99.90,  -8.49,  -0.19,
04/19 22Z,   0.60,  -7.08,  99.90,  -6.67,  -0.19,
04/19 23Z,   0.60,  -5.09,  99.90,  -4.68,  -0.19,
04/20 00Z,   0.60,  -3.08,  99.90,  -2.68,  -0.19,