Drs. John Cortinas, Bob Maddox, Tom Matejka, and Terry Schuur (NSSL and/or CIMMS) provided comments on a draft of the manuscript. Irv Watson (NWSFO Tallahassee) helped with the inceptive analysis effort. Dr. Dusan Zrnic (NSSL) provided the initial motivation to pursue this study. Oklahoma Mesonetwork data were provided courtesy of the Oklahoma Mesonet Project, a cooperative venture between Oklahoma State University and the University of Oklahoma. Much of this work was performed while the first author was a visiting scientist with the Mesoscale and Microscale Meteorology Division of the National Center for Atmospheric Research.
Barnes, S. L., 1964: A technique for maximum detail in numerical map analysis. J. Appl. Meteor.,3, 396–409.
Brandes, E. A., 1977: Flow in a severe thunderstorm observed by dual Doppler radar. Mon. Wea. Rev.,105, 113–120.
Bringi, V. N., R. M. Rasmussen, and J. Vivekanandan, 1986a: Multiparameter radar measurements in Colorado convective storms. Part I: Graupel melting studies. J. Atmos. Sci.,43, 2545–2563.
——, J. Vivekanandan, and J. D. Tuttle, 1986b: Multiparameter radar measurements in Colorado convective storms. Part II: Hail detection studies. J. Atmos. Sci.,43, 2564–2577.
Carey, L. D., and S. A. Rutledge, 1996: A multiparameter radar case study of the microphysical and kinematic evolution of a lightning producing storm. J. Meteor. Atmos. Phys.,59, 33–64.
Colman, B. R., 1990a: Thunderstorms above frontal surfaces in environments without positive CAPE. Part I: A climatology. Mon. Wea. Rev.,118, 1103–1121.
——, 1990b: Thunderstorms above frontal surfaces in environments without positive CAPE. Part II: Organization and instability mechanisms. Mon. Wea. Rev.,118, 1123–1144.
Conway, J. W., and D. S. Zrnic, 1993: A study of embryo production and hail growth using dual-Doppler and multiparameter radars. Mon. Wea. Rev.,121, 2511–2528.
Cummins, K. L., E. A. Bardo, W. L. Hiscox, R. B. Pyle, and A. E. Pifer, 1995: NLDN’95: A combined TOA/MDF technology upgrade of the U.S. National Lightning Detection Network. Proc. Int. Conf. on Lightning and Static Electricity, Williamsburg, VA, U.S. Navy, U.S. Navy Rep. NAWCADPAX-95-306-PRO, 72-1–72-15.
Damiana, T. A., and J. Marwitz, 1995: Development of a gravity wave event during an Oklahoma blizzard. Preprints, 27th Conf. on Radar Meteorology, Vail, CO, Amer. Meteor. Soc., 314–316.
Doviak, R. J., and D. S. Zrnic, 1993: Doppler Radar and Weather Observations. Academic Press, 562 pp.
Galloway, J., A. Pazmany, J. Mead, R. E. McIntosh, D. Leon, J. French, R. Kelly, and G. Vali, 1997: Detection of ice hydrometeor alignment using an airborne W-band polarimetric radar. J. Atmos. Oceanic Technol.,14, 3–12.
Hakim, G. J., and L. W. Uccellini, 1992: Diagnosed coupled jet-streak circulations for a northern Plains snow band from the operational Nested-Grid Model. Wea. Forecasting,7, 26–48.
Heffernan, E., and J. Marwitz, 1996: The Front Range blizzard of 1990. Part II: Melting effects in a convective band. Mon. Wea. Rev.,124, 2469–2482.
Holle, R. L., and A. I. Watson, 1996: Lightning during two central U. S. winter precipitation events. Wea. Forecasting,11, 599–614.
Houze, R. A., Jr., 1993: Cloud Dynamics. Academic Press, 573 pp.
Keyser, D., B. D. Schmidt, and D. G. Daffy, 1992: Quasigeostrophic diagnosis of three-dimensional ageostrophic circulations in an idealized baroclinic disturbance. Mon. Wea. Rev.,120, 698–730.
Koch, S. E., M. DesJardins, and P. J. Kocin, 1983: An interactive Barnes objective map analysis scheme for use with satellite and conventional data. J. Climate Appl. Meteor.,22, 1487–1503.
Lopez, R. E., and J.-P. Aubagnac, 1997: The lightning activity of a hailstorm as a function of changes in its microphysical characteristics inferred from polarimetric radar observations. J. Geophys. Res.,102, 16 799–16 813.
Loughe, A. F., C.-C. Lai, and D. Keyser, 1995: A technique for diagnosing three-dimensional ageostrophic circulations in baroclinic disturbances on limited-area domains. Mon. Wea. Rev.,123, 1476–1504.
Martner, B. E., J. B. Snider, R. J. Zamora, G. P. Byrd, T. A. Niziol, and P. I. Joe, 1993: A remote-sensing view of a freezing-rain storm. Mon. Wea. Rev.,121, 2562–2577.
Marwitz, J. D., and J. Toth, 1993: A case study of heavy snowfall in Oklahoma. Mon. Wea. Rev.,121, 648–660.
McCammon, R. C., 1996: Dry air interactions with a late season heavy snow event over Oklahoma. NOAA Tech. Memo. NWS CR-112, 11 pp.
Moore, J. T., A. C. Czarnetzki, and P. S. Market, 1998: Heavy precipitation associated with elevated thunderstorms formed in a convectively unstable layer aloft. Meteor. Appl.,5, 373–384.
Nelson, S. P., and R. A. Brown, 1982: Multiple Doppler radar derived vertical velocities in thunderstorms. Part I—Error analysis and solution techniques. NOAA Tech Memo ERL NSSL 94, 10 pp.
NOAA, 1994: Storm Data. Vol. 36, No. 3, 78 pp.
Orville, R. E., 1994: Cloud-to-ground lightning flash characteristics in the contiguous United States: 1989–1991. J. Geophys. Res.,99, 10 833–10 841.
Petterssen, S., 1936: Contribution to the theory of frontogenesis. Geofys. Publ.,11 (6), 1–27.
Pruppacher, H. R., and J. D. Klett, 1980: Microphysics of Clouds and Precipitation. D. Reidel, 714 pp.
Rasmussen, R. M., J. Vivekanandan, and J. Cole, 1999: The estimation of snowfall rate using visibility. J. Appl. Meteor.,38, 1542–1563.
Rotunno, R., and J. B. Klemp, 1985: On the rotation and propagation of simulated supercell thunderstorms. J. Atmos. Sci.,42, 271–292.
Ryzhkov, A. V., and D. S. Zrnic, 1994: Precipitation observed in Oklahoma mesoscale convective systems with a polarimetric radar. J. Appl. Meteor.,33, 455–464.
——, and ——, 1995: Comparison of dual-polarization radar estimators of rain. J. Atmos. Oceanic Technol.,12, 249–256.
——, and ——, 1998: Discrimination between rain and snow with a polarimetric radar. J. Appl. Meteor.,37, 1228–1240.
Schultz, D. M., and P. N. Schumacher, 1999: The use and misuse of conditional symmetric instability. Mon. Wea. Rev.,127, 2709–2732.
Smith, P. L., and A. B. Super, 1999: Snowfall algorithms for radar estimation of precipitation. Preprints, 29th Conf. on Radar Meteorology, Montreal, PQ, Canada, Amer. Meteor. Soc., 790–793.
Sperow, K. S., 1995: Airborne Doppler analysis of the 18 February 1993 TOGA COARE squall line using a new analysis method: The two-step, second order Lax-Wendroff scheme. M.S. thesis, University of Oklahoma, 89 pp. [Available from School of Meteorology, University of Oklahoma, 100 E. Boyd, Norman, OK 73019.].
——, H. B. Bluestein, and T. Gal-Chen, 1995: Testing a Doppler analysis method: The two-step, second order Lax-Wendroff scheme. Preprints, 27th Conf. on Radar Meteorology, Vail, CO, Amer. Meteor. Soc., 296–298.
Stewart, R. E., 1992: Precipitation types in the transition region of winter storms. Bull. Amer. Meteor. Soc.,73, 287–296.
——, and P. King, 1990: Precipitation type transition regions in winter storms over southern Ontario. J. Geophys. Res.,95, 22 355–22 368.
Super, A. B., and E. W. Holroyd, 1996: Snow accumulation algorithm for the WSR-88D Radar, Version 1. Bureau of Reclamation Report R-96-04, Denver, CO, 133 pp. [Available from Bureau of Reclamation, P.O. Box 25007, Denver, CO 80225-0007.].
Szeto, K. K., C. A. Lin, and R. E. Stewart, 1988a: Mesoscale circulations forced by melting snow. Part I: Basic simulations and dynamics. J. Atmos. Sci.,45, 1629–1641.
——, R. E. Stewart, and C. A. Lin, 1988b: Mesoscale circulations forced by melting snow. Part II: Application to meteorological features. J. Atmos. Sci.,45, 1642–1650.
Trapp, R. J., and C. A. Doswell III, 2000: Radar data objective analysis. J. Atmos. Oceanic Technol.,17, 105–120.
Vivekanandan, J., V. N. Bringi, M. Hagan, and P. Meischner, 1994: Polarimetric radar studies of atmospheric ice particles. IEEE Trans. Geosci. Remote Sens.,32, 1–10.
Weisman, M. L., and R. Rotunno, 2000: The use of vertical wind shear versus helicity in interpreting supercell dynamics. J. Atmos. Sci.,57, 1452–1472.
Williams, E., 1998: The electrification of severe storms. Preprints, 19th Conf. on Severe Local Storms, Minneapolis, MN, Amer. Meteor. Soc., 630.
Zahrai, A., and D. S. Zrnic, 1993: The 10-cm wavelength polarimetric weather radar at NOAA’s National Severe Storms Laboratory. J. Atmos. Oceanic Technol.,10, 649–662.
Zrnic, D. S., and A. V. Ryzhkov, 1999: Polarimetry for weather surveillance radars. Bull. Amer. Meteor. Soc.,80, 389–406.
——, N. Balakrishnan, C. Ziegler, V. Bringi, K. Aydin, and T. Matejka, 1993: Polarimetric signatures in the stratiform region of a mesoscale convective system. J. Appl. Meteor.,32, 678–693.