The SCOPS Nematodirus Forecast uses a colour-coded warning system that is updated weekly based on temperature data from 140 weather stations across the UK. While the main forecast map is live, a snapshot is taken once per week to record how the risk level has changed over the season. This information can be accessed below, by year, allowing a picture to be built up over time. You will need to know the name of your nearest weather station, which you can find on the interactive, live map. Please use the historic data with care, as the nematodirus risk is different every year and just because the 'dot changed colour' on a certain date in your area in previous years does not mean it will do so again in the future.