 A strong mid-level shortwave trough developed into a closed low-pressure area as the system occluded over the central High Plains on April 27, 2014.An associated surface cyclone reached peak intensity while a trailing cold front moved eastward across eastern Kansas, eastern Oklahoma and northern Texas.There were two areas where severe weather was expected, morning pre-frontal convection from Kansas and Oklahoma into Missouri and Iowa and warm sector supercell development across southeast Oklahoma and northeast Texas into Arkansas.