An eighteen-year span of global cooling that is recorded in Irish bog oaks has been attributed to H-3.

[5] A "high chronology" (earlier) interpretation of the above results is preferred by Baker, based also on growth of stalagmites.

In Sutherland, northwest Scotland, a spurt of four years of doubled annual luminescent growth banding of calcite in a stalagmite is datable to 1135 BC ±130.

[6] A rival, "low-chronology" interpretation of the eruption has been made by Andrew Dugmore: 2879 BP (929 BC ±34).

[9] Some Egyptologists have firmly dated the eruption to 1159 BC, and blamed it for famines under Ramesses III during the wider Bronze Age collapse.