Issued 2 December 2005

Further easing of deficiencies in southern Queensland

Following good falls in October, above to very much above average rainfall for November removed or significantly eased rainfall deficiencies in parts of southern Queensland, the Bureau of Meteorology announced today. However, average to below average falls in parts of southern Victoria saw rainfall deficiencies remain or intensify in that region.

9-month rainfall deficiencies

For the 9-month period from March to November, serious rainfall deficiencies, with patches of severe deficiencies, affect much of southern Victoria between the SA border and Sale in Gippsland. November rainfall was below the long-term mean in southwest Victoria resulting in a slight intensification of the deficits in comparison with the situation at the end of October. This most recent period of deficient rainfall in southern Victoria is included within a period of below average to record low 9-year rainfall totals in the same area.

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11-month rainfall deficiencies

For the 11-month period from January to November, the most significant rainfall deficiencies are located between Bourke (NSW) and Charleville (Qld). These decreased in intensity and spatial extent following average to above average falls in November. Further to the east in the Darling Downs and Granite Belt district and the adjacent border regions of northern NSW, November rainfall was sufficient to remove the deficits that had been evident at the end of October.

Other parts of the country experiencing rainfall deficiencies over this period include the southeastern inland of WA (around Laverton), and parts of Cape York Peninsula in north Queensland.

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Definitions

Lowest on record - lowest in the historical analysis, which runs from 1900.
Severe deficiency - rainfalls in the lowest 5% of historical totals.
Serious deficiency - rainfalls in the lowest 10% of historical totals, but not in the lowest 5%.

Very much below average - rainfalls in the lowest 10% of historical totals.
Below average - rainfalls in the lowest 30% of historical totals, but not in the lowest 10%.
Average - rainfalls in the middle 40% of historical totals.
Above average - rainfalls in the highest 30% of historical totals, but not in the highest 10%.
Very much above average - rainfalls in the highest 10% of historical totals.

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