Some record May rains last week

By Peter Nelson on May 25, 2017
  • Some record May rains last week

    Rainfall totals from this cut off low system were very variable in our regions, not many places got more than 10 mms.

Last week, a cut off low pressure which moved inland from the Bight region into NSW and QLD brought some heavy rainfalls at scattered places in both NSW and QLD. On Friday morning 19th May, Hay with 42 mms and nearby towns, Boorooban and Burrabogie recorded their wettest May day since 1988. At Hay over the past 158 years there were only four wetter May days and these occurred in 1918, 1968, 1974 and 1988. On the Saturday, Grenfell with 54 mms recorded it's wettest May day since 1963. 

Rainfall totals from this cut off low system were very variable in our regions, not many places got more than 10 mms. However, in QLD along the Coast from Ingham south to Fraser Island; there were heavy rainfalls. Townsville with 115 mms recorded it's wettest May day since 121.7 mms on 7th May 1920. This month's total of 158 mms at Townsville is the highest since 1977. 

At Georgetown near Weipa, 74 mms fell last Friday morning . This was the wettest May day there since 93 mms in May of 1890. Both Collinsville and Proserpine with 120 mms and 110 mms respectively recorded their wettest May day on record , surpassing the previous record set on 26th May 1955. 

Very little rain fell in Tasmania and Southern Victoria, but far East Gippsland recorded heavy isolated rainfalls such as 82 mms at Mallacoota and 64 mms at Gabo Island. Sea surface temperatures just east of Gabo Island are still well above normal which may explain the heavy rains last weekend in far East Gippsland. 

Not much rainfall is expected until well into June with the temperatures being above normal for this time of year. It may be the warmest June since 1991 in our regions.

By Peter Nelson on May 25, 2017

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