Aviation Digital Data Service (ADDS)

Output produced by METARs form (0257 UTC 04 May 2015)
found at http://aviationweather.gov/adds/metars/
 
KAVL 032320Z 0400/0424 18007KT P6SM SCT080 OVC110 
     FM040300 20003KT P6SM BKN060 
     FM041300 22003KT P6SM SCT070 
     FM041800 18004KT P6SM BKN060