A combined TOA/MDF technology upgrade of the US National Lightning Detection Network

Kenneth L. Cummins, Martin J. Murphy, Edward A. Bardo, William L. Hiscox, Richard B. Pyle, Alburt E. Pifer

Research output: Contribution to journalArticlepeer-review

883 Scopus citations


The US National Lightning Detection NetworkTM (NLDN) has provided lightning data covering the continental United states since 1989. Using information gathered from more than 100 sensors, the NLDN provides both real-time and historical lightning data to the electric utility industry, the National Weather Service, and other government and commercial users. It is also the primary source of lightning data for use in research and climatological studies in the United States. In this paper we discuss the design, implementation, and data from the time-of-arrival/magnetic direction finder (TOA/MDF) network following a recent system-wide upgrade. The location accuracy (the maximum dimension of a confidence region around the stroke location) has been improved by a factor of 4 to 8 since 1991, resulting in a median accuracy of 500 m. The expected flash detection efficiency ranges from 80% to 90% for those events with peak currents above 5 kA, varying slightly by region. Subsequenmt strokes and strokes with peak currents less than 5 kA can now be detected and located; however, the detection efficiency for these events is not quantified in this study because their peak current distribution is not well know.

Original languageEnglish (US)
Pages (from-to)9035-9044
Number of pages10
JournalJournal of Geophysical Research Atmospheres
Issue numberD8
StatePublished - Apr 27 1998
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Oceanography
  • Forestry
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Palaeontology


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