Viticulture

Exceptional November rains in the Mallee and at isolated places

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November 22, 2017

During last Thursday and Friday, 16th-17th November, heavy exceptional rains for this month were recorded in the Mallee and also at isolated places in the West Central Victoria and at places in the SW part of NSW. Mildura recorded 54.2 mms to Thursday morning.

This was Mildura's wettest November day since 1958. Balranald recorded 84.7 mms to Thursday morning and this was Balranald's wettest November day in 138 years of record and broke the previous wettest November day which had stood since 1882. Swan Hill's 68.4 mms and Kerang's 66 mms both had their wettest November day since 1998.

Canary Island south of Kerang had it's wettest November day on record with 80 mms to last Thursday morning. The small community of DURDIDWARRAH situated in the Brisbane Ranges west of Werribee recorded a total of 115 mms in the two days to 9 am last Saturday morning, 18th November.

Durdidwarrah has been notably very wet this year despite nearby centres being dry. So far a total of 886 mms has fallen this year against an annual average of 658 mms at Durdidwarrah and this is already the fourth wettest ever year in 143 years of records.

The wetter years over 1000 mms were in 1952, 1970 and 1978. Well scattered thunderstorms were reported at few places in NSW and Victoria on both Friday and Saturday with high humidities and maximum temperatures being above normal adding to the discomfort.

Dew points were unusually high at 22 degrees for November on both days and this does indicate the coming summer to be warmer and more humid than normally in our regions. The heavy rain at Mildura which previously occurred in the Novembers of 1917, 1920, 1933, 1958, 1961.

Looking these episodes the summers were all wetter and warmer than normal with a high frequency of thunderstorms.

Our next spell of significant rain is expected in Mid December, the hottest days near Christmas.

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