I was checking on dates and events of Egypt’s First Intermediate Period and the Ipuwer Papyrus. It seems there were two world affecting events/periods around 2000 BCE. The first was about 150 to 200 years earlier. I ran across information about impact craters found in Argentina that seemed to make sense at the time as possible causes.
The Ipuwer Papyrus refers to events of the 2nd IP, The Exodus.