On it goes. 3 weeks previous it couldn't rain if you
wanted it to. What a turnaround. A deep low and approaching cold front
combined to bring torrential and sustained rains to most of South Australia's
Agricultural districts. The synoptic from the 20th tells the story of
what is to come. Its worth noting that the low delivered some amazing
pressures. Mt. Gambier dropped to 983hPa!!

The morning of the 20th saw the heavens open with
torrential rain giving significant runoff into our dam. 32mm was in
the gauge. Click here
for the rain distribution map of the 20th. The weather station recorded
the duration and intensity of the rain as can be seen from the graph
below.

But it was not yet over and the wet stuff continued
to fall over most districts from the hills to the plains that copped
a hammering from at times torrential downpours. Thie following radar
image from the 21st tells some of the story.

The totals from the 21st are staggering. Check out
the rain distribution map!
Adelaide broke its previous record highest ever daily
rainfall for June of 53.6mm in 1920. The morning of the 21st saw 54.6mm
in the Kent Town Gauge. Amazing totals. The Onkaparinga Hills area had
hail drifts while the northern suburbs had flooding. This one was a
northern event though with it relatively quite down in the Southern
Ranges. To 9:00am on the 21st I recorded only 25mm. Incredible variations.
But it still was not yet over. Temperatures plummeted
as conditions continued to degenerate during the day of the 21st. Kingscote,
a coastal town on Kangaroo Island recorded the amazing temp of 5.3 degrees.
Very impressive for a station near sea level! Lightning, hail and thunder
roared through many areas bringing strong winds and rapidly dropping
temps. Mt Lofty dropepd to near zero giving a real possibility of snow
on the ground. Sure enough reports of snow at Crafers and Mt Lofty plus
other ranges locations filtered through. Likely it was sleet and hail,
but........ snow flurries perhaps?
Rain totals to 9:00am on the 22nd can be seen HERE.
During the day on the 22nd, the rains move further east and in a wrap
around rain/shower band the eastern flats and mallee got their turn
with yet again some amazing totals, especially Mannum and Murray Bridge
where well in excess of 25mm fell on these 2 towns. Yet again Murray
Bridge suffered flooding as happened during the summer thunderstorms
earlier this year.
It was quite a few days for the whole state and capped
off what was an amazing few weeks and complete turnaround from the long
standing summer dry. The period from the 20th to the 24th gave me 96.25mm,
an average of nearly an inch a day for the 4 days. The whole month saw
235.25mm, most of which fell in just a 2week period, including these
4 days.
Some of the pictures I captured from the days can
be seen from the link below
IMAGES
FROM THE EVENT