Aviation Digital Data Service (ADDS)

Output produced by TAFs form (2231 UTC 28 July 2014)
found at http://www.aviationweather.gov/adds/tafs/
 
KIAD 282101Z 2821/2924 28017G25KT P6SM BKN070 
     FM290000 30011KT P6SM BKN070 
     FM290400 31007KT P6SM SCT090 
     FM291500 31010KT P6SM SCT050