Cloud-to-ground lightning in the United States: NLDN results in the first decade, 1989-98

Abstract The physical and geographical characteristics of over 216 million cloud-to-ground lightning flashes recorded during the first decade (1989–98) of operation of the National Lightning Detection Network (NLDN) covering the entire continental United States are presented. These characteristics include the total cloud-to-ground flash density, the positive flash density, the percentage of positive flashes, the first stroke negative and positive peak currents, and the multiplicity for negative and positive flashes. All analyses were done with a spatial resolution of 0.2° corresponding to an approximate resolution of 20 km. Flash densities were not corrected for detection efficiency; the measured values are presented. The maximum measured flash density is found to exceed 9 flashes km−2 across Florida in the Tampa–Orlando–Cape Canaveral corridor, near Fort Myers, and between Lake Okeechobee and the Atlantic Ocean. The mean monthly flash count peaks in July at approximately 5.5 million flashes. Positive fla...

[1]  R. Orville.  Peak-current variations of lightning return strokes as a function of latitude , 1990, Nature.

[2]  K. Berger,et al.  Novel observations on lightning discharges: Results of research on Mount San Salvatore , 1967 .

[3]  Raúl E. López,et al.  Surface wind convergence as a short-term predictor of cloud-to-ground lightning at Kennedy Space Center , 1991 .

[4]  Paul Krehbiel,et al.  The electrical structure of the Hokuriku winter thunderstorms , 1982 .

[5]  N. Kitagawa,et al.  Continuing currents in cloud‐to‐ground lightning discharges , 1962 .

[6]  Kenneth L. Cummins,et al.  A Combined TOA/MDF Technology Upgrade of the U.S. National Lightning Detection Network , 1998 .

[7]  W. D. Rust,et al.  Positive cloud‐to‐ground lightning flashes in severe storms , 1981 .

[8]  M. W. Maier,et al.  Initial assessment of flash density and peak current characteristics of lightning flashes to ground in South Florida , 1979 .

[9]  R. Orville,et al.  The East Coast Lightning Detection Network , 1983, IEEE Transactions on Power Delivery.

[10]  R. E. López,et al.  Diurnal and Spatial Variability of Lightning Activity in Northeastern Colorado and Central Florida during the Summer , 1986 .

[11]  Charles H. Paxton,et al.  A 10-yr Monthly Lightning Climatology of Florida: 1986–95 , 1997 .

[12]  K. Howard,et al.  Intense Convective Storms with Little or No Lightning over Central Arizona: A Case of Inadvertent Weather Modification? , 1997 .

[13]  David W. Peckham,et al.  Lightning phenomenology in the Tampa Bay area , 1984 .

[14]  M. Uman,et al.  The Lightning Discharge , 1987 .

[15]  R. E. López,et al.  Diurnal Cloud-to-Ground Lightning Patterns in Arizona during the Southwest Monsoon , 1994 .

[16]  R. Orville,et al.  Lighting Ground Flash Density in the Contiguous United States: 1992–95 , 1991 .

[17]  N. Westcott.  Summertime Cloud-to-Ground Lightning Activity around Major Midwestern Urban Areas , 1995 .

[18]  Vladimir A. Rakov,et al.  Review of lightning properties from electric field and TV observations , 1994 .

[19]  P. K. Moore,et al.  Lightning Characteristics in Lake-Effect Thunderstorms , 1990 .

[20]  E. Pierce,et al.  Latitudinal Variation of Lightning Parameters , 1970 .

[21]  Raúl E. López,et al.  Overview of real-time lightning detection systems and their meteorological uses , 1993 .

[22]  R. M. Reap.  Evaluation of Cloud-to-Ground Lightning Data from the Western United States for the 1983–84 Summer Seasons , 1986 .

[23]  R. Orville,et al.  Changes in measured lightning flash count and return stroke peak current after the 1994 U.S. National Lightning Detection Network upgrade: 2. Theory , 1999 .

[24]  Herbert Songster,et al.  The East Coast Lightning Detection Network , 1986, IEEE Power Engineering Review.

[25]  John M. Wallace,et al.  Diurnal Variations in Precipitation and Thunderstorm Frequency over the Conterminous United States , 1975 .

[26]  R. Orville,et al.  Lightning Ground Flash Measurements over the Contiguous United States: 1995–97 , 1999 .

[27]  E. Krider,et al.  Lightning and surface rainfall during Florida thunderstorms , 1982 .

[28]  P. Hobbs,et al.  Lightning over the Gulf Stream , 1990 .

[29]  Richard E. Orville,et al.  Cloud-to-ground lightning flash characteristics from June 1984 through May 1985 , 1987 .