Aviation Digital Data Service (ADDS)

Output produced by TAFs form (1501 UTC 25 July 2014)
found at http://www.aviationweather.gov/adds/tafs/
 
KIAD 251131Z 2512/2618 29005KT P6SM FEW250 
     FM252200 24004KT P6SM FEW250 
     FM260400 18004KT P6SM SCT200