Characteristics of cloud‐to‐ground lightning in severe and nonsevere storms over the central United States from 1989–1998

[1] Over a region from the Kansas/Colorado border to Minnesota, previously associated with positive anomalies in the mean annual positive cloud-to-ground (CG) lightning percentage and positive peak current, we describe significant differences in the properties of CG lightning flashes between warm-season severe (i.e., large hail or tornado producing) and nonsevere storms. The percentage of CG lightning flashes lowering positive charge to ground was substantially higher in severe storms (i.e., up to three times higher). The median positive peak current in severe storms was significantly larger (i.e., by about 25%). Finally, the median negative peak current in severe storms was very low (i.e., as low as 12–16 kA) and was noticeably smaller than in nonsevere storms (i.e., by at least 10%). Severe storms appeared to be significant producers of positive CG lightning in the anomaly region (AR). Up to 30%–70% of warm season positive flashes in the AR were associated with severe storms. Only 2%–30% of negative flashes were associated with severe storms in the AR. As a result, the mean warm season (and likely annual) positive anomalies in positive CG percentage and peak current are likely associated with a unique class of severe, organized storms that occur preferentially in this geographical region. We found substantial differences in the properties of CG lightning flashes associated with severe storms in other regions. For example, the mean warm season properties of CG lightning associated with severe storms in the region of peak large hail and tornado activity (e.g., Oklahoma) were fundamentally different (i.e., significantly lower positive CG percentage, lower positive peak currents and higher negative peak currents) compared to severe storms over the AR from western Kansas to Minnesota.

[1]  D. Fuquay.  Positive cloud‐to‐ground lightning in summer thunderstorms , 1982 .

[2]  Timothy J. Lang,et al.  Relationships between Convective Storm Kinematics, Precipitation, and Lightning , 2002 .

[3]  Walter A. Petersen,et al.  Vertical Radar Reflectivity Structure and Cloud-to-Ground Lightning in the Stratiform Region of MCSs: Further Evidence for In Situ Charging in the Stratiform Region , 1994 .

[4]  W. D. Rust,et al.  Positive ground flashes produced by low-precipitation thunderstorms in Oklahoma on 26 April 1984 , 1992 .

[5]  Charles A. Doswell,et al.  Climatology of Nontornadic Severe Thunderstorm Events in the United States , 1985 .

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

[7]  C. Doswell,et al.  An Observation of the Relationship between Supercell Structure and Lightning Ground-Strike Polarity , 1992 .

[8]  S. Rutledge,et al.  Positive Cloud-to-Ground Lightning in Mesoscale Convective Systems , 1990 .

[9]  W. Petersen,et al.  Evolution of Cloud-to-Ground Lightning and Storm Structure in the Spencer, South Dakota, Tornadic Supercell of 30 May 1998 , 2003 .

[10]  Charles A. Doswell,et al.  CLIMATOLOGICAL RISK OF STRONG AND VIOLENT TORNADOES IN THE UNITED STATES , 2000 .

[11]  Robert A. Maddox,et al.  An Evaluation of Tornado Proximity Wind and Stability Data , 1976 .

[12]  Richard L. Thompson,et al.  Predicting Supercell Motion Using a New Hodograph Technique , 2000 .

[13]  Walter A. Lyons,et al.  Large Peak Current Cloud-to-Ground Lightning Flashes during the Summer Months in the Contiguous United States , 1998 .

[14]  William R. Burrows,et al.  The North American Lightning Detection Network (NALDN)—First Results: 1998–2000 , 2002 .

[15]  Richard H. Johnson,et al.  Cloud-to-Ground Lightning in Linear Mesoscale Convective Systems , 2001 .

[16]  R. Orville.  Cloud‐to‐ground lightning flash characteristics in the contiguous United States: 1989–1991 , 1994 .

[17]  Richard E. Orville,et al.  Cloud-to-ground lightning in the United States: NLDN results in the first decade, 1989-98 , 2001 .

[18]  V. Chandrasekar,et al.  The Severe Thunderstorm Electrification and Precipitation Study , 2001 .

[19]  Charles A. Doswell,et al.  On Some Issues of United States Tornado Climatology , 1988 .

[20]  E. Williams,et al.  The Electrification of Severe Storms , 2001 .

[21]  D. MacGorman,et al.  Evolution of Cloud-to-Ground Lightning Characteristics and Storm Structure in the Spearman, Texas, Tornadic Supercells of 31 May 1990 , 1998 .

[22]  Lawrence D. Carey,et al.  The Relationship between Severe Storm Reports and Cloud-to-Ground Lightning Polarity in the Contiguous United States from 1989 to 1998 , 2003 .

[23]  Carolyn D. Morgenstern,et al.  Some characteristics of cloud-to-ground lightning in mesoscale convective systems , 1998 .

[24]  Louis J. Wicker,et al.  Characteristics of Cloud-to-Ground Lightning Associated with Violent Tornadoes , 1997 .

[25]  Lawrence D. Carey,et al.  Electrical and multiparameter radar observations of a severe hailstorm , 1998 .

[26]  Steven A. Rutledge,et al.  Cloud-to-Ground Lightning Activity in the Contiguous United States from 1995 to 1999 , 2001 .

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

[28]  Donald W. Burgess,et al.  Positive Cloud-to-Ground Lightning in Tornadic Storms and Hailstorms , 1994 .

[29]  R. Dole,et al.  Meteorological and Electrical Conditions Associated with Positive Cloud-to-Ground Lightning , 1990 .

[30]  J. Michael Fritsch,et al.  Mesoscale Convective Complexes in the Americas , 1987 .

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

[32]  Maribeth Stolzenburg,et al.  Observations of High Ground Flash Densities of Positive Lightning in Summertime Thunderstorms , 1994 .

[33]  R. Orville,et al.  A Comparison Of WSR-88D Reflectivities, SSM/I Brightness Temperatures, and Lightning for Mesoscale Convective Systems in Texas. Part I: Radar Reflectivity and Lightning , 1996 .

[34]  William R. Cotton,et al.  The Precipitation Life Cycle of Mesoscale Convective Complexes over the Central United States , 1989 .

[35]  Donald R. MacGorman,et al.  Cloud-to-Ground Lightning Activity in the 10–11 June 1985 Mesoscale Convective System Observed during the Oklahoma–Kansas PRE-STORM Project , 1988 .

[36]  Anton Seimon,et al.  Anomalous Cloud-to-Ground Lightning in an F5-Tornado-producing Supercell Thunderstorm on 28 August 1990 , 1993 .

[37]  James E. Dye,et al.  Anomalously low negative cloud-to-ground lightning flash rates in intense convective storms observed during STERAO-A , 2000 .

[38]  K. Cummins,et al.  Combined Satellite- and Surface-Based Estimation of the Intracloud Cloud-to-Ground Lightning Ratio over the Continental United States , 2001 .

[39]  S. Vasiloff,et al.  The Evolution of Cloud-to-Ground Lightning within a Portion of the 10 11 June 1985 Squall Line , 1994 .

[40]  Robert A. Houze,et al.  Mesoscale Organization of Springtime Rainstorms in Oklahoma , 1990 .

[41]  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 .

[42]  Louis J. Wicker,et al.  Influences of the Local Environment on Supercell Cloud-to-Ground Lightning, Radar Characteristics, and Severe Weather on 2 June 1995* , 2002 .

[43]  Raúl E. López,et al.  The Life Cycle of Lightning and Severe Weather in a 3–4 June 1985 PRE-STORM Mesoscale Convective System , 1994 .

[44]  S. Goodman,et al.  Cloud-to-Ground Lightning Activity in Mesoscale Convective Complexes , 1986 .

[45]  Charles A. Doswell,et al.  An Augmented Tornado Climatology , 1978 .