A massive surge of polar air
swept from South Australia into Victoria and New South
Wales today, bringing gales, snow, heavy rain and record low daytime
temperatures.
South Australians were greeted by
the unusual spectacle of snow settling on the ground. At Yongala,
in the higher parts of the northern Mt Lofty Ranges 200km north of Adelaide
and 515m above sea level, snow fell for several hours around dawn, while
snow also fell overnight around Mt Lofty, just east of the capital. 2cm
of snow was reported on the ground near Hallett, with 10cm on Mt
Bryan, just east of the town. Cold squally southwesterly winds, hail,
heavy showers and isolated thunderstorms continued through the day, with
Neptune Island reporting gale force winds until around 2pm, and a top
wind gust of 115km/h at 7.20am. Hail created icy driving conditions in
places, and caused three accidents on the Princes Highway near Salt Creek
on the Coorong, while downed trees caused a serious accident on the Millicent
to Penola road early Sunday morning.
The Mt Lofty summit automatic
weather station set a new South Australian record low May maximum temperature
when the sensor only rose to 3.5° during the day. Warooka on
Yorke Peninsula and Eudunda in the northern Barossa Valley both
recorded record low minimum temperatures for May, despite the windy conditions.
Mount Gambier's top temperature during the day was 6.6°, well below
its record low May maximum of 8.3 set in 1952. However, the temperature
rose overnight to peak at 9° around 4am Sunday, robbing the city of a
new record as the Australian weather "day" is for 24 hours to
9am on the next calendar day. Similarly, the Adelaide Bureau
Regional Forecasting Centre at Kent Town recorded a top of 11.1, beating
the previous record of 11.2 set as far back as 1892 at a slightly different
location, but a rising temperature overnight increased the official figure
to 12.5°.
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Maximum temperatures
were 6 to 10 degrees below normal across a large part of southern
Australia today. |
In Victoria, cold, wet and windy
conditions spread across the state, with snowfalls reported at Casterton,
Hamilton and Harrow in the Western District, and at Trentham, 50km east
of Ballarat, Mt Macedon (up to 15cm on the ground), and at Olinda,
only 500m above sea level in the Dandenong Ranges. Snow also fell at Weeaproinah
in the Otway Ranges during the morning, as the temperature at the small
settlement, 490m above sea level, recorded a temperature of 0.3°. Snow
also fell at nearby Lavers Hill between 8 and 10am, with 2cm accumulation.
Melbourne City's top temperature of 10.2 was the coldest May day
since 1977, while at Ballarat the mercury only reached 5° and at Bendigo
7°. Snow fell through the day at alpine resorts, with Mount Hotham recording
a top temperature of only -5.2. Much-needed rain fell in the state's far
southwest with totals between 25 and 50mm, and similar gaugings were made
in the northeast.
In New South Wales, the cold front
dropped temperatures to close to freezing as it passed, and gave Canberra,
Orange and the Oberon area brief snow mid-afternoon. However,
as well as being cold, the air was dry and snowfalls were light.
Snowy Mountains resorts were jubilant as up to half a metre of
snow fell in cold moist northwesterlies ahead of the front. Kosciuszko
Chalet reported 20cm of snow on the ground at 9am, and 45cm at 3pm, while
Thredbo reported 10cm in the Village at 3pm. Strong winds accompanied
very cold temperatures for May on the Blue Mountains, with Mount
Boyce reporting 40 km/h winds with a temperature just above zero from
late afternoon, after a peak gust of 93km/h as the front passed.
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