METAR: SPECI CYYC 131021Z 05009KT 15SM BKN021 BKN036 15/08 A3009 RMK SC5SC2 SLP178 DENSITY ALT 4300FT

TAF: CYYC 130840Z 1309/1406 35008KT P6SM BKN012 TEMPO 1309/1312 BKN009 BECMG 1312/1313 34004KT FEW012 FM131300 34004KT P6SM SKC BECMG 1314/1316 07005KT BECMG 1317/1319 12010KT FM132200 14012KT P6SM SKC BECMG 1401/1403 11008KT BECMG 1404/1406 02004KT RMK NXT FCST BY 131200Z