http://weather.unisys.com/hurricane/e_pacific/2005/IRWIN/track.gif

Best Track from JTWC

Tropical Storm IRWIN
ADV  LAT    LON      TIME     WIND  PR  STAT
  1  17.20 -106.30 08/25/21Z   30  1005 TROPICAL DEPRESSION
  2  17.20 -107.30 08/26/03Z   30  1004 TROPICAL DEPRESSION
  3  17.50 -108.20 08/26/09Z   35  1004 TROPICAL STORM
  4  17.80 -109.20 08/26/15Z   45  1000 TROPICAL STORM
  5  17.70 -110.10 08/26/21Z   45  1000 TROPICAL STORM
  6  17.50 -111.00 08/27/03Z   45  1000 TROPICAL STORM
  7  17.50 -111.90 08/27/09Z   40  1003 TROPICAL STORM
  8  17.40 -112.60 08/27/15Z   35  1005 TROPICAL STORM
  9  17.40 -113.40 08/27/21Z   35  1005 TROPICAL STORM
 10  17.20 -114.30 08/28/03Z   30  1006 TROPICAL DEPRESSION
 11  17.10 -114.80 08/28/09Z   25  1008 TROPICAL DEPRESSION
 12  16.90 -115.50 08/28/15Z   25  1006 TROPICAL DEPRESSION