The South Korean Lightning Mapping Array (SKLMA) was an 10-station, ground-based network located in Seoul, South Korea from May through October, 2023 in support of the the Korea Precipitation Observation Program: International collaborative experiments for Mesoscale convective system in Seoul metropolitan area (KPOP-MS) field campaign. The KPOP-MS campaign was “conducted to advance understanding of the dynamical and microphysical processes governing mesoscale convective systems (MCSs).” The campaign focused on these as convective cells are capable of producing multiple modes of severe weather that can range from heavy rainfall, strong winds, and lightning. The LMA maps Very High Frequency (VHF) emissions from lightning in three dimensions. This dataset offers the basic, processed Level 1 solutions. The related datasets have grouped, temporally and spatially, these solutions into individual flashes, and the flash characteristics analyzed to produce gridded products. The dataset was produced by NASA Marshall Space Flight Center (MSFC). These LMA data are available from May 11 through October 12, 2023 in ASCII, HDF5, and netCDF-4 format. These correspond to Level 1, Level 2, and Level 3 data, respectively.