Lightning Density - Lightning Density - Warning Decision Training Division (WDTD)
Cloud-to-Ground (CG) Lightning Density (flashes min-1 km-2) is derived from Vaisala’s National Lightning Detection Network (NLDN) data.
Cloud-to-ground Lightning Density
- 1 minute
- 5 minute
- 15 minute
- 30 minute
NWS: WFO, CWSU, SPC, AWC
FAA: Tower, TRACON, ARTCC, ATCSCC, AFSS
NLDN CG Flashes
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 Density is derived using NLDN data. A temporal one-minute average of lightning flashes is determined for each grid cell, roughly 1 km x 1 km in dimension. Cloud-to-ground lightning flashes with values less than 5 kA are filtered out because they are likely intra-cloud flashes.
Latest Update: MRMS Version 10