The Romans and Chinese noticed when Taupo went off last time, so there isn’t much point evacuating, you’re dead. The scale of that eruption was just incredible.
“The eruption ejected some 45–105 km3 (11–25 cu mi) of bulk tephra, of which just over 30 km3 (7.2 cu mi) was ejected in approximately 6–7 minutes… The main extremely violent pyroclastic flow travelled at close to the speed of sound and devastated the surrounding area, climbing over 1,500 m (4,900 ft) to overtop the nearby Kaimanawa Ranges and Mount Tongariro, and covering the land within 80 km (50 mi) with ignimbrite… There were massive changes in the landscape for 40 km (25 mi) around with all life sterilised and prior landforms evened out.”
