Notes on the Weather for Victoria

Australian Government Bureau of Meteorology

Notes on the Weather
Issued at 4:30 pm EST on Wednesday 12 August 2020.

Recent Events
A band of rain crossed Victoria overnight, reaching eastern parts around
sunrise this morning. In the 24 hours to 9am this morning widespread falls of
1-4mm were recorded across western and central parts, reaching 4-8mm across
north central parts. The highest recorded falls were 14.8mm at Mt William in
the Grampians and 10.6mm at Avalon Station.

Minimum temperatures were generally 2 to 5 degrees above the August average in
central and eastern districts and up to 2 degrees above average in the east.
Most minima ranged between 5 and 10 degrees. The lowest recorded minimum was -2
degrees at Mt Hotham, while the warmest places in the State overnight were
Melbourne and Laverton which reported a minimum of 11 degrees.

The band of rain slowly eased over central and eastern parts today, although
skies remained overcast. There was patchy drizzle about the central ranges,
while showers and thunderstorms developed over far western Victoria this
afternoon. In the 7 hours to 4pm patchy falls to 3mm were recorded across parts
of the northeast, with isolated falls to 6mm were recorded over the far west.
The highest recorded fall was 6.4mm at Nhill as thunderstorms moved through the
area. Winds were generally light to moderate northerlies, tending fresh over
elevated areas.

Maximum temperatures were generally within 2 degrees of the August average.
Most maxima ranged between 12 and 17 degrees. The highest recorded maximum was
20 degrees at Cape Nelson, followed by 19 degrees at Mildura, Walpeup and
Orbost. The lowest maximum was 1 degree at Mt Hotham.

The temperature in Melbourne city ranged from a minimum of 10.8 degrees at
4:39am to a maximum of 15.9 degrees at 2:18pm. The city gauge recorded 0.8mm of
rain in the 24 hours to 9am this morning, with no further rain recorded in the
7 hours to 4pm today.

Explanatory Notes
An unstable northwesterly airstream will persist across Victoria until the end
of the week. A low pressure system will move slowly east across waters south of
the Bight, before weakening on Friday as an upper level trough crosses the
State. Another low will develop off the south coast of NSW on Saturday as a
large high pressure system moves over South Australia. The low is expected to
remain slow moving during Sunday as a weak high pressure ridge extends over
western Victoria.