Auckland, New Zealand Flood (March 2017)

Heavy rains from Friday March 10 through Sunday March 12 have led to flooding in Auckland, New Zealand (pop. ~1.4 million). Local fire services reported 321 properties (both residential and commercial) have flooded, but the level of flooding is unclear . The worst affected area was West Auckland where 225 properties were reported damaged. The suburbs of New Lynn, Avondale, Glen Eden, Titirangi, and Green Bay appear to have sustained the most damage due to flooding.. AA Insurance reported ~160 flood claims between Friday March 10 and Sunday March 12. 10 people were rescued from flooded shops in New Lynn, 12 people were evacuated from a residential building in Kelston, and Bunnings Warehouse in New Lynn was evacuated due to flooding. A sinkhole was reported on New Lynn’s main street. No buildings were damaged, but one commercial building is located at the edge of the sinkhole. Meteorological Observations. New Zealand’s National Institute of Water and Atmospheric Research (NIWA) reported 100 mm (4 inches) of rain in Auckland in 24 hours from Friday March 10 to Saturday March 11 . The heaviest rain reported by NIWA was in Titirangi, with 65 mm (2.5 in) of rain in one hour on Sunday March 12. 60 mm (2.4 in) of rain was reported in New Lynn over two hours on Sunday March 12 . According to NIWA, rainfall of this magnitude has a return period of 30 years. Whangaparoa, 24 km (15 mi) north of Auckland, has already received 226 mm (8.9 in) of rain since March 1, 317% of the climatological rainfall for March. This was Auckland’s wettest March day on record since 1959. Forecast. No further rain is forecast for Auckland within the next 48 hours and no further flood warnings have been issued.

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March 2017

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