557 
FTUS43 KDMX 182321
TAFOTM
TAF
KOTM 182321Z 1900/1924 32010KT P6SM SKC
     FM190900 17008KT P6SM FEW250
     FM191600 18015G22KT P6SM BKN250
     FM191800 18015G23KT P6SM BKN240=