WVCO31 SKBO 211340 SKED SIGMET 2 VALID 211305/211900 SKBO- SKED BOGOTA FIR VA ERUPTION MT VOLCAN NEVADO DEL RUIZ PSN N0453 W07519 VA CLD OBS AT 1240Z SFC/FL220 N0504 W07520 - N0452 W07518 - N0452 W07520 - N0502 W07523 - N0504 W07520 MOV W 5KT=