A survey reported in the 11 March issue of The Weekly Genealogist, by American Ancestors, found that 7% of respondents had at least one parent who relocated due to climate/weather issues.
Assuming the statistic applies across generations, what is the likelihood that at least one ancestor relocated due to weather/climate issues?
| Generations (n) | Total Ancestors (N) |
Probability of Having at Least One Weather or Climate Migrant Ancestor
|
| 1 (Parents) | 2 | 7.00% |
| 2 (Grandparents) | 6 | 19.56% |
| 3 (G-Grandparents) | 14 | 39.83% |
| 4 (GG-Grandparents) | 30 | 66.33% |
| 5 (GGG-Grandparents) | 62 | 89.46% |
| 6 (4G-Grandparents) | 126 | 98.97% |
| 7 (5G-Grandparents) | 254 | 99.99% |
| 8 (6G-Grandparents) | 510 | ~100.00% |
As the weather will impact a nuclear family equally, if they move, all will move; it’s likely that many more than one will have moved. There’s an assumption that all ancestors in the tree are unique (no pedigree collapse).
In the American Ancestors survey, based on 3,355 responses, 40% reported not being aware of any of their ancestors relocating because of climate/weather.
Does that imply 60% were aware? If so, and considering the estimates in the table, it suggests that at about the G-Grandparent to GG-Grandparent level, people become unaware of the impact of climate and weather on their ancestors’ migration.
The survey was restricted to migration caused by climate or weather. Other impacts, including death, would need to be included to evaluate the importance for family history.




This week, FMP adds over 267,000 new records from Lancashire and Yorkshire, plus 286,735 pages new newspaper pages.
Like most federal departments, Library and Archives Canada is adjusting to reductions announced in the 2025 federal budget and the ongoing Comprehensive Expenditure Review.
It remains to be seen where the axe will fall within LAC. We have to read the tea leaves to judge the impact on the now delayed opening of Adisoke. Will LAC cut what appears to be an unnecessarily cautious ATIP procedure regarding WW2 service files? Will robust digitization reduce demand for producing archival documents? Will we have to wait until the Estimates document is tabled to find out?
This coming Saturday, 14 February 2026, the BIFHSGO monthly meeting will be online only. After the presentations, attendees are invited to turn on their video and microphone for an online social.
A quiet day for gen-news is a good time to remind you about RootsTech 2026, the world’s largest family history conference, coming up 5-7 March. That’s just 20 days away.
If you could use a hand researching those who passed through the upper Ottawa Valley, from Clara to McNab on the Ontario side and from Eddy to Onslow on the Quebec side, the UOVGG can help.

