Author Topic: NZ weather summary May 1957  (Read 1857 times)

Offline Rwood

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NZ weather summary May 1957
« on: May 03, 2018, 04:40:34 PM »
May 1957:  Wet and mild. In many North Island districts it was a good month for farming, with satisfactory pasture growth. In the South Island conditions were generally much too wet. A depression which moved down the east coast of both islands from the 16th to the 20th caused unusually stormy weather. Very strong southerly gales blew through Cook Strait on the 17th and 18th, seriously affecting shipping. Floods were reported in many parts of Canterbury and Otago, the most serious on the Taieri plains on the 19th. Small tornadoes caused local damage at Kaitaia on the 4th and Lower Hutt on the 7th.

Rainfall: Rainfall was above normal except in Northland, Gisborne and Hawkes Bay. Greatest excesses occurred in eastern and southern districts of the South Island. Over the eastern half of Otago and in the Catlins district totals ranged from 5” to 13” and were 3-5 times the average value. Roxburgh with 6.46” and Lawrence with 10.59” had their wettest months on record. Thunderstorms affected many western districts on the night of 14th/15th. [Invercargill Aero’s 8.60” is still its highest for May, the first of a run of 3 wet Mays – but this followed 14 that were all average or drier than average!].

Temperatures:
Temperatures were above normal, mainly by 1F-2F. During a spell of cold southwesterlies on the last 4 days of the month, snow fell to low levels from Southland to Canterbury and also on the central plateau of the North Island.

Sunshine: Sunshine was below normal by more than 20 hours over most of the South Island and also in the Taranaki-Wanganui area. Elsewhere they were mainly close to average, but Gisborne and parts of Northland had somewhat sunnier weather than usual.

[Some totals: Te Hapua 169, Kaitaia 154, Kerikeri 162, Whangarei 160, Auckland 153, Tauranga 167, Whakatane 172, Taupo 130, Hamilton 121, New Plymouth 131, Masterton 121, Gisborne 168, Napier 153, Paraparaumu 110, Ohakea 107, Palmerston Nth 107, Levin 95, Wellington 121, Wanganui 113, Westport 97,  Hokitika 97, Greymouth 90, Haast 92, Nelson 129, Blenheim 154, Grassmere 147, Mt Cook 65, Methven 132, Christchurch 139, Tekapo 97, Timaru 112, Waimate 111, Omarama 125, Dunedin 76, Queenstown 64, Alexandra 96, Invercargill 85, Campbell Is 27, Chatham Is 118].

Sources: NZ Met. Misc. pub. 107 (Climatological table, NZ Gazette) and NZ Met. Misc. pub. 109 (Meteorological Observations) - additional comments by the poster.




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