Dry October but Adelaide wetter than recent years and colderPress Release, Monday November 1, 2010 - 14:13 EDT
Despite below average rain Adelaide had it's wettest October in five years, it was also the coldest in seven years, according to weatherzone.com.au.
The city only managed 28mm, 17mm short of the monthly average, but still wetter than any of the previous four Octobers.
A large area covering South Australia's Central and South East districts had a similar month, wetter than any of the last four Octobers but still drier than average. Coonawarra failed to reach half their monthly average of 47mm, only gaining 20mm.
"Across the state this month has been wetter than recent Octobers, mainly due to extra northwest cloud bands which have brought decent falls to northern parts," Weatherzone meteorologist Brett Dutschke said.
Much of the north had its wettest October in 10 to 20 years. Port Pirie picked up 65mm in the month, double the average and the highest for October in 13 years. Renmark, Kyancutta and Leigh Creek's all had 60 to 70mm, about three times their monthly average and their highest for October in more than 15 years.
"There is more moisture in the atmosphere compared to recent years, with the aid of warmer than normal waters off Australia's west, north and east coasts," Dutschke said.
"Adelaide had close to its typical number of rain days, nine compared to 10, but was on the edge of the rain-bearing cloud bands, so it didn't get as wet as further north."
"The cloud did have the effect of keeping days cooler than normal and nights warmer than normal, but only by less than half a degree."
Adelaide had an average minimum of 11.7 degrees and average maximum of 21.4.
When combining nighttime and daytime temperatures it turned out to be the coldest October in seven years, with an average temperature of 16.5 degrees.
Most of SA was cooler than normal during the day, as much as three degrees below average in the north and east, as much as two degrees below average in the west and near average in central and southeastern parts.
Nights were near average across the state, within about a degree of average.
"Looking ahead to the rest of spring and summer, daytime temperatures should stay near-or-below the long-term average whilst nights remain near-or-above. This is due to the likely continuation of northwest cloud bands originating from warmer than normal waters off the northwest and north coasts. This should also lead to near-or-above average rainfall," Dutschke said.
© Weatherzone 2010
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