DALLAS (WBAP/KLIF) Severe weather including multiple tornado warnings were issued for parts of Dallas, Tarrant, and Johnson counties and storm sirens could be heard in parts of Dallas, Arlington, Fort Worth and Grapevine as a line severe thunderstorms tore through the Metroplex early last night during rush hour. Funnel clouds began forming in southern Tarrant County around 5;45PM and began heading northeast. Funnel clouds were also spotted in the Burleson. Parts of Dallas County were under a Tornado Warning briefy around 6:15PM. There were hundreds of cancellations and delays at DFW Airport.