Aviation Digital Data Service (ADDS)

Output produced by METARs form (0748 UTC 18 January 2018)
found at http://aviationweather.gov/adds/metars/
 
KSWF 180539Z 1806/1912 30004KT P6SM SKC 
     FM181500 30012G18KT P6SM SCT030 
     FM182300 31007KT P6SM SKC 
     FM190400 VRB04KT P6SM SKC AMD NOT SKED