METAR: CYYC 221200Z 21003KT 12SM FEW180 SCT230 15/13 A3008 RMK AC1CI2 SLP179 DENSITY ALT 4400FT

TAF: CYYC 221140Z 2212/2312 VRB03KT P6SM SCT230 FM222000 09010KT P6SM SCT100 FM230600 VRB03KT P6SM SKC RMK NXT FCST BY 221500Z