Probability of cloud-to-ground (CG) lightning at a given location over the next 30 minutes.
NWS: WFO, CWSU, AWC, SPC
FAA: Tower, TRACON, ARTCC, ATCSCC, AFSS
Cloud-to-Ground Lightning Density
Vertically Integrated Liquid
Reflectivity at xoC
Spatial Resolution: 0.01o Latitude (~1.11 km) x 0.01o Longitude (~1.01 km at 25oN and 0.73 km at 49oN)
Temporal Resolution: 2 minutes
CG lightning probability is determined using an attribute-extraction algorithm detailed by Lakshmanan and Smith (2009) to train a model with storm properties, rather than pixel values of parameters thought to precede lightning initiation (e.g., reflectivity at -10°C). Inputs for the attribute-extraction algorithm include storm properties such as size, speed, aspect ratio, lightning density (determined using Vaisala’s National Lightning Detection Network (NLDN) data, Vertically Integrated Liquid (VIL)
, and reflectivity isotherms).
Lakshmanan, V., and T. Smith, 2009: Data Mining Storm Attributes from Spatial Grids. J. Atmos. Oceanic Technol.