Taken from Wikipedia, this thundercloud shows us why our Blessed Mother is urging us to hurry to shelter when we hear the thunder.
"Daytime will start growing it will not be in the heights of summer
time, neither during the longest days, but still short ones. It will not be at the end of a year, but rather in the first months that I will clearly give My warnings . . . (June 15, 1882, pp. 50-51, ibid).
"My children, says Mary Immaculate, my heart cannot keep anything for itself. Therefore, I warn you: at the moment when the thunder will be roaring -- I forewarn you -- run away
from under it and retire in your homes.
"It is at the beginning of the new year that the Cross will have to be taken up, and pressed upon one's heart.
"Grave diseases will arise, which human craftsmanship will be unable to relieve. . .
[See Section in top menu bar labelled "Diseases" in www.mjjprophecy.com -Ed.]
"My people, . . . your eyes are to see the frightening hour, when greening wheat will not have reached
the third knot of its growth." (October 5, 1882, p. 187, Prophecies of La Fraudais)