NASA and the Japanese Space Agency's Tropical Rainfall Measuring Mission or TRMM satellite passed over Olga's remnants on January 30 at 1425 UTC (9:25 a.m. ET), when it was moving from the Queensland to New South Wales Territory. Most of the rainfall was light to moderate, but there were isolated areas of heavy rain falling at 2 inches per hour.
An elongated area of low pressure (known as a trough) that is associated with the remnants of Tropical Cyclone Olga is forecast to extend over western New South Wales region over the next few days. The region is expected to experience widespread rainfall of the moderate to heavy variety over the next couple of days, particularly in the western portions.
The Australian Bureau of Meteorology expects some local flooding in the far northwest New South Wales region in the Tibooburra area. Other areas that may face flooding rainfall include parts of the state north of Wilcannia and Cobar and west of Walgett.
Currently there are flood warnings posted for the Darling and Warrego Rivers, but other rivers may also flood. Residents living in low-lying areas, flood plains and areas around rivers and streams should closely monitor river levels and forecasts.
As for the kinds of rainfall some of these areas can expect? If the rainfall that Olga has left in her wake is any indication, it could very well be heavy. Brisbane received .2 to .4 inches (5-10mm) of rain, however more than 13 inches (330 millimeters) of rain fell at Finch Hatton.
The New South Wales State Emergency Service is volunteers helping their communities cope with emergencies, and the Australian Bureau of Meteorology is asking citizens facing flood threats to contact them. FloodSafe advice is available at www.ses.nsw.gov.au.
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