SPXX60 KWBC 171820 SPECI KAFF 171811Z AUTO 19015G26KT 10SM CLR 32/M15 A2974 RMK AO2 WSHFT 06 SLP952= KRCA 171800Z 20004KT 2 3/4SM BR OVC006 12/11 A2968 RMK AO2A VIS 2 1/2V3 VIS 1 1/2 RWY31 CIG 002 RWY31 SLP046= KRCA 171804Z 19004KT 2SM BR OVC005 12/11 A2968 RMK AO2A VIS 2V3 CIG 002 RWY31 SLP044= KRCA 171809Z 20003KT 3SM BR OVC005 12/11 A2968 RMK AO2A VIS 1 7/8V2 3/4 CIG 002 RWY31 SLP044=