Aviation Digital Data Service (ADDS)

Output produced by TAFs form (0502 UTC 28 August 2016)
found at http://www.aviationweather.gov/adds/tafs/
 
KIAD 272334Z 2800/2906 VRB04KT P6SM FEW250 
     FM280800 00000KT P6SM SCT250 
     FM281600 12006KT P6SM FEW250