Rapid-Scan, Polarimetric Observations of Central Oklahoma Severe Storms on 31 May 2013

ABSTRACTOn 31 May 2013, a polarimetric WSR-88D located in Norman, Oklahoma (KOUN), was used to collect sectorized volumetric observations in a tornadic supercell. Because only a fraction of the full azimuthal volume was observed, rapid volume update times of ~1–2 min were achieved. In addition, the number of pulses used in each radial was larger than is conventional, increasing the statistical robustness of the calculated polarimetric variables. These rapid observations serve as a proxy for those of a future dual-polarized phased-array radar. Through comparison with contemporaneous observations from two nearby dual-polarized WSR-88Ds [Twin Lakes, Oklahoma (KTLX), and near University of Oklahoma Westheimer Airport in Norman (KCRI)], a number of instances in which the rapidly scanned KOUN radar detected or better resolved (in a temporal sense) features of severe convective storms are highlighted. In particular, the polarimetric signatures of merging updrafts, a rapidly descending giant hail core, an anticyc...

[1]  R. Vogt,et al.  Agile-Beam Phased Array Radar for Weather Observations , 2007 .

[2]  R. Palmer,et al.  Polarimetric Phased-Array Radar for Weather Measurement: A Planar or Cylindrical Configuration? , 2011 .

[3]  V. Bringi,et al.  Hail Detection with a Differential Reflectivity Radar , 1984, Science.

[4]  Andrew D. Byrd,et al.  Observations of Severe Local Storms and Tornadoes with the Atmospheric Imaging Radar , 2015 .

[5]  Guifu Zhang,et al.  Simulations of Polarimetric Radar Signatures of a Supercell Storm Using a Two-Moment Bulk Microphysics Scheme , 2010 .

[6]  N. Balakrishnan,et al.  Use of Polarization to Characterize Precipitation and Discriminate Large Hail , 1990 .

[7]  Vincent T. Wood,et al.  Improved Detection of Severe Storms Using Experimental Fine-Resolution WSR-88D Measurements , 2005 .

[8]  Sebastián M. Torres,et al.  High-Temporal-Resolution Capabilities of the National Weather Radar Testbed Phased-Array Radar , 2011 .

[9]  Paul Markowski,et al.  Genesis of the Goshen County, Wyoming, Tornado on 5 June 2009 during VORTEX2 , 2013 .

[10]  H. Bluestein,et al.  A Multiscale Overview of the El Reno, Oklahoma, Tornadic Supercell of 31 May 2013 , 2015 .

[11]  Joshua Wurman,et al.  The Role of Multiple-Vortex Tornado Structure in Causing Storm Researcher Fatalities , 2014 .

[12]  Pamela L. Heinselman,et al.  31 May 2013 El Reno Tornadoes: Advantages of Rapid-Scan Phased-Array Radar Data from a Warning Forecaster’s Perspective* , 2015 .

[13]  Alexander V. Ryzhkov,et al.  Storm-Relative Helicity Revealed from Polarimetric Radar Measurements , 2009 .

[14]  Jerry M. Straka,et al.  Enhanced polarimetric radar signatures above the melting level in a supercell storm , 2002 .

[15]  Katja Friedrich,et al.  Radar in Atmospheric Sciences and Related Research: Current Systems, Emerging Technology, and Future Needs , 2014 .

[16]  Robert R. Hoffman,et al.  Tornado Warning Decisions Using Phased-Array Radar Data , 2015 .

[17]  Rodger A. Brown,et al.  Simulated Vortex Detection Using a Four-Face Phased-Array Doppler Radar , 2012 .

[18]  Jana Lesak Houser,et al.  Rapid-Scan, Polarimetric, Doppler Radar Observations of Tornadogenesis and Tornado Dissipation in a Tornadic Supercell: The “El Reno, Oklahoma” Storm of 24 May 2011* , 2015 .

[19]  P. Markowski,et al.  Dynamical Influences of Anvil Shading on Simulated Supercell Thunderstorms , 2013 .

[20]  Joshua Wurman,et al.  In Situ, Doppler Radar, and Video Observations of the Interior Structure of a Tornado and the Wind–Damage Relationship , 2013 .

[21]  Matthew R. Kumjian,et al.  Principles and applications of dual-polarization weather radar. Part II: Warm- and cold-season applications , 2013 .

[22]  V. Chandrasekar,et al.  Short wavelength technology and the potential for distributed networks of small radar systems , 2009, 2009 IEEE Radar Conference.

[23]  Krzysztof Orzel.  Mobile X-band dual polarization phased-array radar: System requirements and development , 2011 .

[24]  Louis J. Wicker,et al.  Impacts of a Storm Merger on the 24 May 2011 El Reno, Oklahoma, Tornadic Supercell , 2015 .

[25]  Daphne LaDue,et al.  Exploring Impacts of Rapid-Scan Radar Data on NWS Warning Decisions , 2012 .

[26]  Alexander V. Ryzhkov,et al.  Polarimetric Signatures in Supercell Thunderstorms , 2008 .

[27]  A. Witt.  High-Resolution Phased Array Radar Observations of an Oklahoma Hailstorm Producing Extremely-Large Hail , 2014 .

[28]  Robert D. Palmer,et al.  High-Temporal Resolution Polarimetric X-Band Doppler Radar Observations of the 20 May 2013 Moore, Oklahoma, Tornado , 2015 .

[29]  David Priegnitz.  Enhancements to the National Weather Radar Testbed Phased Array Radar Storm Tracking Function , 2013 .

[30]  Daniel T. Dawson,et al.  Does wind shear cause hydrometeor size sorting , 2015 .

[31]  Robert R. Lee,et al.  New WSR-88D Volume Coverage Pattern 12: Results of Field Tests , 2005 .

[32]  Alexander V. Ryzhkov,et al.  The Impact of Size Sorting on the Polarimetric Radar Variables , 2012 .

[33]  Vincent T. Wood,et al.  Improved Tornado Detection Using Simulated and Actual WSR-88D Data with Enhanced Resolution , 2002 .

[34]  Travis M. Smith.  The Use of Radial Velocity Derivatives to Diagnose Rotation and Divergence , 2004 .

[35]  R. edwards.  Characteristics of Supercellular Satellite Tornadoes , 2014 .

[36]  Jeffrey C. Snyder,et al.  Some Considerations for the Use of High-Resolution Mobile Radar Data in Tornado Intensity Determination , 2014 .

[37]  Michael P. Foster,et al.  The Joint Polarization Experiment: Polarimetric Radar in Forecasting and Warning Decision Making , 2005 .

[38]  S. Weygandt,et al.  Dual-Doppler and Single-Doppler Analysis of a Tornadic Storm Undergoing Mergers and Repeated Tornadogenesis , 2007 .

[39]  A. Illingworth,et al.  Polarization radar studies of precipitation development in convective storms , 1987 .

[40]  Jerry M. Straka,et al.  Enhanced polarimetric radar signatures above the melting level in a supercell storm , 2002, IEEE International Geoscience and Remote Sensing Symposium.

[41]  A. Ryzhkov,et al.  A ZDR Column Detection Algorithm to Examine Convective Storm Updrafts , 2015 .

[42]  Stephen J. Frasier,et al.  Observations of Polarimetric Signatures in Supercells by an X-Band Mobile Doppler Radar , 2013 .

[43]  S. Frasier,et al.  Mobile, X-band, Polarimetric Doppler Radar Observations of the 4 May 2007 Greensburg, Kansas, Tornadic Supercell , 2012 .

[44]  Elise V. Schultz,et al.  Dual-Polarization Tornadic Debris Signatures Part I: Examples and Utility in an Operational Setting , 2012 .

[45]  Travis M. Smith,et al.  The Warning Decision Support System–Integrated Information , 2007 .

[46]  M.,et al.  Improved Detection of Severe Storms Using Experimental Fine-Resolution WSR-88D Measurements , 2005 .

[47]  Alexander V. Ryzhkov,et al.  Observations of the 10 May 2010 Tornado Outbreak Using OU-PRIME: Potential for New Science with High-Resolution Polarimetric Radar , 2011 .

[48]  Daphne LaDue,et al.  Strengths and Limitations of Current Radar Systems for Two Stakeholder Groups in the Southern Plains , 2010 .

[49]  Travis M. Smith,et al.  Rapid Sampling of Severe Storms by the National Weather Radar Testbed Phased Array Radar , 2008 .

[50]  Joshua Wurman.  Rapid-Scan Mobile Radar 3D GBVTD and traditional analysis of tornadogenesis , 2008 .

[51]  Alexander V. Ryzhkov,et al.  Rapid-Scan Super-Resolution Observations of a Cyclic Supercell with a Dual-Polarization WSR-88D , 2010 .

[52]  Venkatramani Balaji,et al.  Remote Sensing of Hail with a Dual Linear Polarization Radar , 1986 .

[53]  C. Kuster,et al.  11-Year Radar-Based Study of Tornadic Thunderstorms over Central Oklahoma , 2012, E-Journal of Severe Storms Meteorology.

[54]  Alexander V. Ryzhkov,et al.  Validation of Polarimetric Hail Detection , 2006 .

[55]  H. Bluestein,et al.  Reexamining the Vertical Development of Tornadic Vortex Signatures in Supercells , 2013 .

[56]  Francesc Junyent,et al.  Close-Range Observations of Tornadoes in Supercells Made with a Dual-Polarization, X-Band, Mobile Doppler Radar , 2007 .

[57]  H. Bluestein,et al.  Mobile, Phased-Array, Doppler Radar Observations of Tornadoes at X Band , 2012 .

[58]  Alexander V. Ryzhkov,et al.  THE JOINT POLARIZATION EXPERIMENT Polarimetric Rainfall Measurements and Hydrometeor Classification , 2005 .

[59]  R. Hastings.  Simulation of Near-surface Mesocyclogenesis during Mergers between Mature and Nascent Supercells , 2014 .

[60]  J. N. Chrisman.  Automated Volume Scan Evaluation and Termination (AVSET) - A Simple Technique to Achieve Faster Volume Scan Updates , 2009 .

[61]  A. Ryzhkov,et al.  A Dual-Wavelength Polarimetric Analysis of the 16 May 2010 Oklahoma City Extreme Hailstorm , 2012 .

[62]  Louis J. Wicker,et al.  Bulk Hook Echo Raindrop Sizes Retrieved Using Mobile, Polarimetric Doppler Radar Observations , 2014 .

[63]  Rick P. Thomas,et al.  Impacts of Phased-Array Radar Data on Forecaster Performance during Severe Hail and Wind Events , 2015 .

[64]  A. Ryzhkov,et al.  Polarimetric Tornado Detection , 2005 .

[65]  Alexander Khain,et al.  The Anatomy and Physics of Z(DR) Columns: Investigating a Polarimetric Radar Signature with a Spectral Bin Microphysical Model , 2014 .

[66]  J. B. Mead,et al.  A Mobile Rapid-Scanning X-band Polarimetric (RaXPol) Doppler Radar System , 2013 .

[67]  John T. Snow,et al.  Multiple Vortex Features in the Tornado Cyclone and the Occurrence of Tornado Families , 1976 .

[68]  D. Burgess,et al.  A Dual-Polarization-Radar-Based Assessment of the 8 May 2003 Oklahoma City Area Tornadic Supercell , 2008 .

[69]  Jeffrey B. Knorr,et al.  A Mobile, Phased-Array Doppler Radar For The Study of Severe Convective Storms , 2010 .

[70]  Louis J. Wicker,et al.  Low-LevelZDRSignatures in Supercell Forward Flanks: The Role of Size Sorting and Melting of Hail , 2014 .

[71]  Forrest J. Masters,et al.  Drop-Size Distributions in Thunderstorms Measured by Optical Disdrometers during VORTEX2 , 2013 .

[72]  E. Rasmussen,et al.  Polarimetric Radar Observations at Low Levels during Tornado Life Cycles in a Small Sample of Classic Southern Plains Supercells , 2008 .

[73]  W. Petersen,et al.  USE OF DUAL-POLARIZATION SIGNATURES IN DIAGNOSING TORNADIC POTENTIAL , 2012 .

[74]  C. Crowe.  A dual-polarization investigation of tornado warned cells associated with Hurricane Rita (2005) , 2009 .

[75]  R. Palmer,et al.  Dual-Wavelength Polarimetric Radar Analyses of Tornadic Debris Signatures , 2014 .

[76]  Paul Markowski,et al.  Tornado maintenance investigated with high-resolution Dual-Doppler and EnKF analysis , 2012 .