Publications by Jon Davies

Informal publications:

Davies, J., 1990:  Midget supercell spawns tornadoes.  Weatherwise, October 1990, 260-261. (These were some of the first color photos ever taken of a tornadic mini-supercell associated with a cold core mid-level low pressure system.)   See this link for a more technical paper with additional photos.

Inglish, H., editor, 1990:  Year of the Storms - the Destructive Kansas Weather of 1990.  Hearth Publishing, Hillsboro, Kansas. (I was technical advisor and contributed photos for this excellent book, which included an overview of the F5 Hesston tornado.)

Davies, J., and C. White, 1991:  The tornado outbreak of April 26.  In the book Tornado: Terror and Survival - The Andover Tornado April 26, 1991.  H. Inglish, editor.  Counseling Center of Butler County, Andover, Kansas.  (This comprehensive book was about the F5 Andover tornado.)

Davies, J., 1992:  April 28, 1991 tornado-producing mini-supercells, Storm Track, January 1993.   See this link for additional discussion and photos.

Davies, J., 1995:  A look at the energy-helicity index, Storm Track, May 1995.

Technical research in peer-reviewed publications:

Davies, J. M., and R. H. Johns, 1993.  Some wind and instability parameters associated with strong and violent tornadoes.  Part 1. Wind shear and helicity.   The Tornado: Its Structure, Dynamics, Prediction, and Hazards, Geophys. Monogr., No. 79, Amer. Geophys. Union, 573-582.

Johns, R. H., J. M. Davies, and P. W. Leftwich, 1993:  Some wind and instability parameters associated with strong and violent tornadoes.  Part 2. Variations in the combinations of wind and instability parameters.  The Tornado: Its Structure, Dynamics, Prediction, and Hazards, Geophys. Monogr., No. 79, Amer. Geophys. Union, 583-590.

Davies, J. M., C. A. Doswell  III, D. W. Burgess, and J. F. Weaver, 1994:  Some noteworthy aspects of the Hesston, Kansas, tornado family of 13 March 1990.   Bull. Amer. Meteor. Soc., 75, 1007-1017.

Davies, J. M., 2004:  Estimations of CIN and LFC associated with tornadic and nontornadic supercells. Wea. Forecasting, 19, 714-726.

Caruso, J. M., and J. M. Davies, 2005:  Tornadoes in non-mesocyclone environments with pre-exisitng vertical vorticity along convergence boundaries.  NWA Electronic Journal of Operational Meteorology, June 2005.

Technical research (not peer-reviewed) in AMS conference preprint publications:

Davies, J. M. 1989: On the use of shear magnitudes and hodographs in forecasting.   Preprints, 12th Conf. Wea. Analysis & Forecasting, Monterey, CA, Amer. Meteor. Soc., 219-224.

Johns, R. H., J. M. Davies, and P. W. Leftwich, 1993:  An examination of the relationship of 0-2 km AGL "positive" wind shear to potential buoyant energy in strong and violent tornado situations.  Preprints, 16th Conf. Severe Local Storms, Kananaskis Park, Alberta, Canada, Amer. Meteor. Soc., 593-598.

Davies, J. M., 1993:  Hourly helicity, instability, & EHI in forecasting supercell tornadoes.  Preprints, 17th Conf. Severe Local Storms, St. Louis, MO, Amer. Meteor. Soc., 107-111.  (This is a good intorductory paper about the Energy-Helicity Index; see also this link for a more informal discussion.)

Davies, J. M., 1993:  Small tornadic supercells in the central plains.  Preprints, 17th Conf. Severe Local Storms, St. Louis, MO, Amer. Meteor. Soc., 305-309.

Davies, J. M., 1996:  Deep layer shear as a refinement to CAPE & low-level shear in tornado forecasting.  Preprints, 18th Conf. Severe Local Storms, San Francisco, CA, Amer. Meteor. Soc., 698-702.

Davies, J. M., 1998:  On supercell motion in weaker wind environments.   Preprints, 19th Conf. Severe Local Storms, Minneapolis, MN, Amer. Meteor. Soc., 685-688.

Hodanish, S., and J. Davies, 2002:  The 29 May 2001 Lamar, Colorado tornadic event.  Preprints, 21st Conf. Severe Local Storms, San Antonio, TX, Amer. Meteor. Soc., 575-578.

Davies, J. M., and J. A. Hart, 2002:  Mesoscale environment factors in the D.C. area tornado event of 24 September 2001. Preprints, 21st Conf. Severe Local Storms, San Antonio, TX, Amer. Meteor. Soc., 551-554.

Davies, J. M., 2002:  On low-level thermodynamic parameters associated with tornadic and non-tornadic supercells.   Preprints, 21st Conf. Severe Local Storms, San Antonio, TX, Amer. Meteor. Soc., 603-606.

Davies, J. M. 2002:  Significant tornadoes in environments with relatively weak shear.  Preprints, 21st Conf. Severe Local Storms, San Antonio, TX, Amer. Meteor. Soc., 651-654.

Davies, J. M., and J. L. Guyer 2004:  A preliminary climatology of tornado events with closed cold core 500 mb lows in the central and eastern United States.   Preprints CD, 22nd Conf. Severe Local Storms, Hyannis, MA, Amer. Meteor. Soc., paper 7B.4.

Pietrycha, A. E., J. M. Davies, M. Ratzer, and P. Merzlock, 2004:  Tornadoes in a deceptively small CAPE environment: The 20 April 2004 outbreak in Illinois and Indiana.  Preprints CD, 22nd Conf. Severe Local Storms, Hyannis, MA, Amer. Meteor. Soc., paper P1.3.

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