Joshua Wurman : Research has improved tornado tracking , but it remains imprecise , flawed . He says warning speed , false alarms change little . People still die . We must do better . He says synthesis of research , radar observation will help . Communications must improve . Comment: Public must heed warnings , build tornado-proof structures , to bring deaths to zero .
Joshua Wurman : Research has improved tornado tracking , but it remains imprecise , flawed . He says warning speed , false alarms change little . People still die . We must do better . He says synthesis of research , radar observation will help . Communications must improve . Wurman : Public must heed warnings , build tornado-proof structures , to bring deaths to zero .