What is already known:
What this study adds:
Tornadoes with inadequate warnings continue to present a threat to the public. In this study, outbreak events from 2008-2010 were gathered from the National Weather Service verification database to analyze their tornado warning performance. Utilizing Google Earth and an online radar viewer, we numbered the parent storms that produced those tornadoes. We then categorized these tornadoes into the order of sequence they were produced, called tornado order, to analyze their warning performance and lead time. Our primary hypothesis in doing this was to see whether the first tornado of every storm was more poorly warned than subsequent tornadoes on each storm. Furthermore, we analyzed differences in tornado-warning performance with respect to geographical region and the diurnal cycle. Our data shows a correlation with tornado order and warning performance. Warning rates and positive lead times increased with subsequent tornadoes after the first tornado. Tornado order with respect to their diurnal cycle showed a substantial difference between diurnal events (which had a better warning rate) and nocturnal events. No significant differences were evident between warning rates in different geographical regions. Our study shows evidence that tornado order and the diurnal cycle impact the warning performance of tornadoes.