Bad weather was a primary cause of the
Great Famine:
Between 1310 and 1330, northern Europe saw some of the worst and most sustained periods of bad weather in the entire Middle Ages, characterized by severe winters and rainy and cold summers. The Great Famine may have been precipitated by a volcanic event,[4] perhaps that of Mount Tarawera, New Zealand, which lasted about five years.[5][6]
Changing weather patterns, the ineffectiveness of medieval governments in dealing with crises and population level at a historical high made it a time for little margin for error in food production.
That it was possibly precipitated by a volcano on the other side of the world is astounding.
Via
Joe Gregorio.