By Silas Allen, Staff WriterNORMAN — When tornadoes like the one that struck Moore last month are imminent, forecasters can often warn residents about them a few days in advance. But weather researchers at the National Oceanic and Atmospheric Administration’s National Severe Storms Laboratory and elsewhere are working on a new method they hope will allow emergency responders to prepare weeks ahead of time when tornadoes are likely. Harold Brooks, senior research scientist at the Norman-based laboratory, said scientists could be a few years away from being able to release seasonal forecasts for tornadoes.Read more on NewsOK.com