The Thunderstorm Electrification and Lightning Experiment (TELEX) observed a heavy-precipitation supercell storm with extraordinarily large flash rates preceeding and during the time it produced tornadoes and large hail in central Oklahoma on 29-30 May 2004. A series of minima in the plan projection of lightning density (I.e., lightning holes) formed just above the bounded weak echo region. A dual-Doppler synthesis of wind during one volume scan shows the lightning hole was co-located with large vertical wind speeds in the rotating updraft.
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