KMIA 180258Z 1803/1906 09010KT P6SM SCT030 BKN050 
  FM180400 VRB04KT P6SM SCT030 BKN050 
  FM181600 10010KT P6SM SCT030 BKN050 
  FM190200 VRB04KT P6SM SCT030 BKN250