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Cloud-to-Ground Lightning Density

Cloud-to-Ground Lightning Density

Short Description

Cloud-to-Ground (CG) Lightning Density (flashes min-1 km-2) is derived from Vaisala’s National Lightning Detection Network (NLDN) data.

Subproducts

Cloud-to-ground Lightning Density

  • 1 minute
  • 5 minute
  • 15 minute
  • 30 minute

Primary Users

NWS: WFO, CWSU, SPC, AWC

FAA: Tower, TRACON, ARTCC, ATCSCC, AFSS

Other: EM

Input Sources

NLDN CG Flashes

Resolution

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

Product Creation

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.

Technical Details

References

None