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      Hurricane and Tropical Cyclones
      Category 1 Hurricane

      Hurricane Isis

      Storm Activity: Sep 8, 2004 - Sep 21, 2004

      Peak Wind
      75 mph
      Lowest Pressure
      987 mb
      Duration
      13 days
      Last Position
      16 N 140 W

      Storm Track

      Sep 8 – Sep 21
      Storm Category
      1. Tropical Depression < 39 mph
      2. Tropical Storm 39-73 mph
      3. Category 1 Peak 74-95 mph
      4. Category 2 96-110 mph
      5. Category 3 111-129 mph
      6. Category 4 130-156 mph
      7. Category 5 157+ mph

      Intensity

      Sustained wind at each observation
      Peak wind
      75 mph
      Peak category
      Category 1
      Lowest pressure
      987 mb

      Sep 21 · 00:00 GMT 35 mph 1,011 mb Tropical Low

      Storm Track Statistics
      Sep 21 00:00 GMT 16 -140 35 mph 1,011 mb Tropical Low --
      Sep 20 21:00 GMT 16 -139.74 35 mph 1,011 mb Tropical Low --
      Sep 20 18:00 GMT 16 -139.5 35 mph 1,011 mb Tropical Low --
      Sep 20 15:00 GMT 16 -139.27 35 mph 1,010 mb Tropical Low --
      Sep 20 12:00 GMT 16 -139 35 mph 1,010 mb Tropical Low --
      Sep 20 09:00 GMT 16 -138.62 35 mph 1,009 mb Tropical Low --
      Sep 20 06:00 GMT 16 -138.2 35 mph 1,009 mb Tropical Low --
      Sep 20 03:00 GMT 15.99 -137.79 35 mph 1,009 mb Tropical Low --
      Sep 20 00:00 GMT 16 -137.4 35 mph 1,009 mb Tropical Low --
      Sep 19 21:00 GMT 16.04 -137.03 35 mph 1,009 mb Tropical Low --
      Sep 19 18:00 GMT 16.1 -136.7 35 mph 1,009 mb Tropical Low --
      Sep 19 15:00 GMT 16.15 -136.44 35 mph 1,009 mb Tropical Low --
      Sep 19 12:00 GMT 16.2 -136.2 35 mph 1,009 mb Tropical Low --
      Sep 19 09:00 GMT 16.25 -135.95 35 mph 1,009 mb Tropical Low --
      Sep 19 06:00 GMT 16.3 -135.7 35 mph 1,009 mb Tropical Low --
      Sep 19 03:00 GMT 16.34 -135.45 35 mph 1,009 mb Tropical Low --
      Sep 19 00:00 GMT 16.4 -135.2 35 mph 1,009 mb Tropical Low --
      Sep 18 21:00 GMT 16.49 -134.95 30 mph 1,009 mb Tropical Low --
      Sep 18 18:00 GMT 16.6 -134.7 30 mph 1,009 mb Tropical Low --
      Sep 18 15:00 GMT 16.7 -134.44 30 mph 1,009 mb Tropical Low --
      Sep 18 12:00 GMT 16.8 -134.2 30 mph 1,009 mb Tropical Low --
      Sep 18 09:00 GMT 16.9 -134.04 30 mph 1,009 mb Tropical Low --
      Sep 18 06:00 GMT 17 -133.9 30 mph 1,009 mb Tropical Low --
      Sep 18 03:00 GMT 17.1 -133.75 30 mph 1,008 mb Tropical Low --
      Sep 18 00:00 GMT 17.2 -133.6 35 mph 1,008 mb Tropical Low --
      Sep 17 21:00 GMT 17.3 -133.45 35 mph 1,008 mb Tropical Low --
      Sep 17 18:00 GMT 17.4 -133.3 35 mph 1,008 mb Tropical Low --
      Sep 17 15:00 GMT 17.51 -133.14 35 mph 1,008 mb Tropical Low --
      Sep 17 12:00 GMT 17.6 -133 35 mph 1,008 mb Tropical Low --
      Sep 17 09:00 GMT 17.65 -132.9 35 mph 1,007 mb Tropical Low --
      Sep 17 06:00 GMT 17.7 -132.8 35 mph 1,007 mb Tropical Low --
      Sep 17 03:00 GMT 17.8 -132.65 35 mph 1,006 mb Tropical Low --
      Sep 17 00:00 GMT 17.9 -132.5 35 mph 1,006 mb Tropical Low --
      Sep 16 21:00 GMT 17.95 -132.39 35 mph 1,006 mb Tropical Low --
      Sep 16 18:00 GMT 18 -132.3 35 mph 1,006 mb Tropical Low --
      Sep 16 15:00 GMT 18.09 -132.24 35 mph 1,004 mb Tropical Depression --
      Sep 16 12:00 GMT 18.2 -132.2 35 mph 1,003 mb Tropical Depression --
      Sep 16 09:00 GMT 18.32 -132.21 45 mph 1,001 mb Tropical Storm --
      Sep 16 06:00 GMT 18.4 -132.2 50 mph 1,000 mb Tropical Storm --
      Sep 16 03:00 GMT 18.43 -132.1 60 mph 997 mb Tropical Storm --
      Sep 16 00:00 GMT 18.4 -132 65 mph 994 mb Tropical Storm --
      Sep 15 21:00 GMT 18.33 -132 65 mph 992 mb Tropical Storm --
      Sep 15 18:00 GMT 18.2 -132 70 mph 991 mb Tropical Storm --
      Sep 15 15:00 GMT 18.01 -131.93 70 mph 989 mb Hurricane --
      Sep 15 12:00 GMT 17.8 -131.8 75 mph 987 mb Hurricane 1
      Sep 15 09:00 GMT 17.64 -131.62 70 mph 990 mb Tropical Storm --
      Sep 15 06:00 GMT 17.5 -131.4 65 mph 994 mb Tropical Storm --
      Sep 15 03:00 GMT 17.34 -131.16 60 mph 995 mb Tropical Storm --
      Sep 15 00:00 GMT 17.2 -130.9 60 mph 997 mb Tropical Storm --
      Sep 14 21:00 GMT 17.09 -130.65 50 mph 998 mb Tropical Storm --
      Sep 14 18:00 GMT 17 -130.4 45 mph 1,000 mb Tropical Storm --
      Sep 14 15:00 GMT 16.9 -130.14 45 mph 1,001 mb Tropical Storm --
      Sep 14 12:00 GMT 16.8 -129.9 40 mph 1,003 mb Tropical Storm --
      Sep 14 09:00 GMT 16.68 -129.71 45 mph 1,002 mb Tropical Storm --
      Sep 14 06:00 GMT 16.6 -129.5 45 mph 1,002 mb Tropical Storm --
      Sep 14 03:00 GMT 16.58 -129.24 50 mph 1,001 mb Tropical Storm --
      Sep 14 00:00 GMT 16.6 -128.9 50 mph 1,000 mb Tropical Storm --
      Sep 13 21:00 GMT 16.59 -128.48 50 mph 1,000 mb Tropical Storm --
      Sep 13 18:00 GMT 16.6 -128 50 mph 1,000 mb Tropical Storm --
      Sep 13 15:00 GMT 16.63 -127.51 50 mph 1,000 mb Tropical Storm --
      Sep 13 12:00 GMT 16.7 -127 50 mph 1,000 mb Tropical Storm --
      Sep 13 09:00 GMT 16.84 -126.5 50 mph 1,000 mb Tropical Storm --
      Sep 13 06:00 GMT 17 -126 50 mph 1,000 mb Tropical Storm --
      Sep 13 03:00 GMT 17.11 -125.5 50 mph 1,000 mb Tropical Storm --
      Sep 13 00:00 GMT 17.2 -125 50 mph 1,000 mb Tropical Storm --
      Sep 12 21:00 GMT 17.26 -124.49 50 mph 1,000 mb Tropical Storm --
      Sep 12 18:00 GMT 17.3 -124 50 mph 1,000 mb Tropical Storm --
      Sep 12 15:00 GMT 17.36 -123.54 50 mph 1,000 mb Tropical Storm --
      Sep 12 12:00 GMT 17.4 -123.1 50 mph 1,000 mb Tropical Storm --
      Sep 12 09:00 GMT 17.41 -122.65 50 mph 1,001 mb Tropical Storm --
      Sep 12 06:00 GMT 17.4 -122.2 45 mph 1,002 mb Tropical Storm --
      Sep 12 03:00 GMT 17.4 -121.74 45 mph 1,002 mb Tropical Storm --
      Sep 12 00:00 GMT 17.4 -121.3 40 mph 1,003 mb Tropical Storm --
      Sep 11 21:00 GMT 17.4 -120.89 35 mph 1,003 mb Tropical Depression --
      Sep 11 18:00 GMT 17.4 -120.5 35 mph 1,004 mb Tropical Depression --
      Sep 11 15:00 GMT 17.4 -120.11 35 mph 1,004 mb Tropical Depression --
      Sep 11 12:00 GMT 17.4 -119.7 35 mph 1,004 mb Tropical Depression --
      Sep 11 09:00 GMT 17.4 -119.27 35 mph 1,004 mb Tropical Depression --
      Sep 11 06:00 GMT 17.4 -118.8 35 mph 1,004 mb Tropical Depression --
      Sep 11 03:00 GMT 17.4 -118.27 35 mph 1,004 mb Tropical Depression --
      Sep 11 00:00 GMT 17.4 -117.7 35 mph 1,004 mb Tropical Depression --
      Sep 10 21:00 GMT 17.41 -117.14 35 mph 1,004 mb Tropical Depression --
      Sep 10 18:00 GMT 17.4 -116.6 35 mph 1,004 mb Tropical Depression --
      Sep 10 15:00 GMT 17.35 -116.13 35 mph 1,004 mb Tropical Depression --
      Sep 10 12:00 GMT 17.3 -115.7 35 mph 1,004 mb Tropical Depression --
      Sep 10 09:00 GMT 17.29 -115.29 35 mph 1,003 mb Tropical Storm --
      Sep 10 06:00 GMT 17.3 -114.9 40 mph 1,003 mb Tropical Storm --
      Sep 10 03:00 GMT 17.31 -114.5 45 mph 1,002 mb Tropical Storm --
      Sep 10 00:00 GMT 17.3 -114.1 45 mph 1,002 mb Tropical Storm --
      Sep 9 21:00 GMT 17.27 -113.71 45 mph 1,002 mb Tropical Storm --
      Sep 9 18:00 GMT 17.2 -113.3 40 mph 1,003 mb Tropical Storm --
      Sep 9 15:00 GMT 17.07 -112.84 40 mph 1,003 mb Tropical Storm --
      Sep 9 12:00 GMT 16.9 -112.4 40 mph 1,003 mb Tropical Storm --
      Sep 9 09:00 GMT 16.71 -112.07 40 mph 1,003 mb Tropical Storm --
      Sep 9 06:00 GMT 16.5 -111.8 40 mph 1,003 mb Tropical Storm --
      Sep 9 03:00 GMT 16.26 -111.54 40 mph 1,003 mb Tropical Storm --
      Sep 9 00:00 GMT 16 -111.3 40 mph 1,003 mb Tropical Storm --
      Sep 8 21:00 GMT 15.69 -111.04 40 mph 1,003 mb Tropical Storm --
      Sep 8 18:00 GMT 15.4 -110.8 40 mph 1,004 mb Tropical Storm --
      Sep 8 15:00 GMT 15.2 -110.6 35 mph 1,004 mb Tropical Depression --
      Sep 8 12:00 GMT 15.1 -110.4 35 mph 1,004 mb Tropical Depression --
      Sep 8 09:00 GMT 15.08 -110.16 35 mph 1,004 mb Tropical Depression --
      Sep 8 06:00 GMT 15.1 -109.9 35 mph 1,005 mb Tropical Depression --

      Learn more about Hurricane Isis and the 2004 Eastern Pacific hurricane season in our hurricane archive.

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