Aviation Digital Data Service (ADDS)

Output produced by METARs form (0524 UTC 19 April 2014)
found at http://www.aviationweather.gov/adds/metars/
 
KIAD 190520Z 1906/2012 19003KT P6SM OVC250 
     FM191500 03008KT P6SM BKN250 
     FM191900 01012KT P6SM SCT250