The Arno overflowed its banks, and many cornfields were inundated, much damage being caused both above and below Florence. It was the worst flood within anyone's recollection, and began in the evening. The corn, which was almost ripe, suffered greatly.
Astronomical Events
The moon was in the first quarter that night.
Sunrise in Arno was at 5:54 AM and sunset was at 6:01 PM.
Sunrise in Florence was at 5:54 AM and sunset was at 6:01 PM.