000613 -- Case Summary Flight Times: 2016 - 2424 ANVIL CASE DAY There was no 74C radar data for this day. Good anvil study. Aircraft arrives in the early stages of anvil development and remains until little or no initiating convection is left. Lightning activity until 2145. This is an excellent case in which the Citation investigated the anvil of an isolated, electrically active thunderstorm for over three hours starting at a time when the storm was still producing lightning through the time when the fields had decayed to a couple of kV/m. It is also an excellent case for examining the spatial/temporal decay of electric field downwind of the core of a storm.