Aviation Digital Data Service (ADDS)

Output produced by METARs form (0642 UTC 21 August 2017)
found at http://aviationweather.gov/adds/metars/
 
KMGW 210520Z 2106/2206 15004KT P6SM FEW250 
     FM211700 17003KT P6SM BKN050 
     FM212300 20004KT P6SM SCT250