A farm in Waiwhare, Hawke’s Bay, recorded an incredible 730mm of rainfall during Cyclone Gabrielle, which at its peak unleashed 250mm of rain an hour into the gauge.
The 730mm figure is more than double what the peak forecasts for Hawke’s Bay were expecting ahead of the cyclone and helps explain the huge flows that breached the banks of the Tūtaekurī River in Napier on Tuesday February 14.
A Davis weather data logger set up on the Te Konini farm recorded 643.6mm over 24 hours on the Tuesday and 730 mm altogether over Tuesday and Wednesday according to Tom Lane, sheep and beef farmer and general counsel and commercial director at Rockit Global Ltd.
Lane said he also had a few plastic fence post rain gauges with a capacity for 100mm that were filled up pretty quickly, but this was the only weather station he had running that could record the entire event.
“We average about 1100mm in a year, so that was pretty phenomenal,” he said.