FTUS41 KBGM 261720 TAFBGM TAF KBGM 261720Z 2618/2718 19005KT P6SM SKC FM270000 15008KT P6SM SKC FM271200 16012G18KT P6SM SCT200 FM271600 18013G21KT P6SM FEW060 SCT090 BKN120=