Significant Weather Media Release Statistics


Australian Government Bureau of Meteorology
New South Wales

Significant Weather Media Release
Issued at 3:31 pm EDT on Tuesday 29 January 2013.

Ex-Tropical Cyclone Oswald – NSW Impact.

The low pressure system, ex-TC Oswald, was centred over southest Queensland for
several days before tracking south through inland NSW overnight Monday and
moving out to sea south of Sydney this morning. The event produced some record
breaking rainfall in NSW.

Highest Daily Rainfall records for any month:
Old Koreelah (McPherson) in the Upper Clarence catchment: 205 mm on 28 Jan,
Previously 176.8 mm on 19 Feb 1961, Length of record, 100 years.

Pine Ridge (Billabong) in the Namoi catchment: 131 mm on 29 Jan, Previously
114.8 mm on 24 Feb 1955, Length of record 81 Years.

Several Highest daily January rainfall records were also set.

Highest Rainfall totals:
The highest four day rainfall total (26-29 Jan): Upper Rous River (Hopkins
Creek) in the Tweed Catchment: 1027 mm
Highest three day rainfall total (27-29 Jan): Upper Rous River (Hopkins Creek):
944 mm, but this was not considered a record as observations only began in 2007.
The all time three day rainfall total record for NSW is 1090.2 mm at Bowraville
(Cow Cownty) set in December 1975.

Record Flooding:
The Clarence River at Grafton peaked near 8.08 m around 11 am on Tuesday 29
January with Major flooding. This was the highest peak since records began in
1839. The previous record was 7.9 m in 1890.

Maximum Wind Gust Recorded:
Cape Byron, 132 km/h at 5:17 pm EDT, highest since records began in 2004.

Wave: Data (Courtesy of NSW Office of Environment and Heritage and NSW Public
Works Manly Hydraulics Laboratory)
Coff Harbour Significant Wave Height: 6.95 m on 28 Jan 8 pm EDT with a
corresponding maximum wave height of 11.0 m. (This is not a record).

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