The floods followed a lengthy cold period and were formed from melting snow and broken river ice.[2] The thawing of snow and breaking up of river ice caused significant flooding on 5 and 6 February, affecting the entire Trent valley.[3][4] At this time the Hethbeth or Trent Bridge at Nottingham consisted of more than twenty stone piers covered by a wooden deck.[1][5] The bridge was badly damaged by ice floes moving down the river and much of the northern half was swept away.[7][8][9] The damage at nearby Holme, Nottinghamshire, and North Muskham, Lincolnshire, was witnessed by Thomas Winnard who composed a poem beginning "when heirs and widows hoarding fresh supplies/Bottle up tears wrung from St. Swithin's eyes", Swithin being the patron saint of weather.