We gratefully acknowledge constructive comments on an earlier version of this manuscript from Dr. David Stensrud, Dr. Conrad Ziegler, and two anonymous reviewers. This work was partially developed while the first author held a National Research Council–National Severe Storms Laboratory Research Associateship, and completed under support of the Scientific Program of NATO. Also, computer support provided by NCAR's Scientific Computer Division (which is sponsored by the National Science Foundation) for model data preprocessing is acknowledged. Observational data of the event was provided by the Spanish Instituto Nacional de Meteorología.
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