Egryn, Merionethshire, Wales — December 1693
Unexplained fiery phenomenon
A “fiery exhalation” came from the sea and set fire to the hay with “a blue weak flame.” The fire, though easily extinguished, “did not the least harm to any of the men who interposed their endeavour to save the hay, though they ventured (perceiving it different from common fire) not only close to it, but sometimes into it.”
Source: The oldest report comes from a letter dated January 20th, 1694 by a certain Maurice Jones to the author of the additions to Cambden ‘s Brittania. The letter was published in The Philosophical Transactions, vol. XVIII (1694), pp. 49-50, along with a chronology and names of witnesses of the events. Case: W258