000 FTUS41 KBUF 161220 RRA TAFBUF TAF KBUF 161220Z 1612/1712 20003KT P6SM FEW070 FM161600 29005KT P6SM SKC FM162000 35007KT P6SM SKC FM170400 09006KT P6SM FEW250 FM171100 08013G22KT P6SM BKN120=