Monthly Archives: December 2010

Re: Rainfall recovery in the Murray Darling Basin 2010

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December 2010 rainfall for the Murray Darling Basin (NSW)

Please find below the final rainfall statistics for 2010 for the selected centres that I have compiled from the local weather stations. There are several amazing rainfall figures for 2010 including:-

a) Wagga Wagga - A new yearly rainfall record was set for a total of 1,019.4 mm. Such rainfall has never occurred here.
b) Orange:- An amazing total of 1,592 mm fell during the year.

When compared to the average rainfall and rainfall for 2009, the year 2010 is a marked stand out for the Murray Darling Basin.

Much of the December rainfall occurred in the first few days of the month. In particular at Dubbo, 115 mm of its near 168 mm fell during the first 6 days of the month. I was at Dubbo at the time to witness the flooding that occurred along the Macquarie River. A similar storey occurred at Parkes. Wagga Wagga was impacted by two big storm events resulting in its high monthly total of 151 mm and flooding occurred there as well.

The drought broke but by December, too much rain fell and significant flooding resulted in many areas. Looking at the daily weather records for the selected centres, December ended drier in such centres as Albury, Dubbo and Wagga Wagga and some drying out started to occur in the south. However at Orange (Central Tablelands), 104 mm of rain fell on the 25/26 which boosted the monthly total to 299.9 mm. So while some parts of the Basin at least in New South Wales started to dry out in the latter half of the month, heavy rains continued in other areas.

The table referred to is attached below.

Harley Pearman   

Tropical Low WA : from 30 December 2010

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Remarks:

The low may develop into a tropical cyclone after it moves off the west Kimberley coast late Friday or early Saturday. It is not expected to cause gales on Friday but gales may develop along the Pilbara coast on Saturday for a brief period as the system moves steadily towards the west southwest parallel to the Pilbara coast. By Sunday the system is likely to be north of Exmouth and continuing to move towards the west.

Coastal areas of the west Kimberley between Kuri Bay and Wallal including Broome can expect a period of strong winds and heavy rain overnight from Friday into Saturday morning.
Heavy rainfall of 100 to 150mm is expected in the north and west Kimberley over the next two days as the system moves westwards. Significant stream rises with local flooding is possible in the North and West Kimberley, refer to the latest Flood Watch [IDW39610] for further details. The system is unlikely to cause flooding in the Pilbara due to its steady movement.

FESA-State Emergency Service advises that there are no community alerts at present.
Communities between Wallal and Exmouth should listen for the next advice.
Name:  Tropical Low

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