1. The Great storm at Alvanley, near Frodsham, A.D. 1687;Anon;Palatine Notebook,1883
2. The events of 17th May 1997;Anon;Bedfordshire Naturalist, Bedford,1998
3. Distribution of hail and graupel with size;Auer;Mon. Weather Rev.,1972
4. Extreme hail day climatology in southwestern France;Berthet;Atmos. Res.,2013