Weather News

Unseasonable warmth, humidity, rain, storms affecting SA

Brett Dutschke, Sunday October 14, 2018 - 14:10 AEDT

A swathe of warmth and humidity more typical of late spring or summer is slowly passing through South Australia, along with rain and storms, good for some but not others.

On the whole, the warmth is fairly typical and welcome by most. Whilst humidity is not as high as it can get in summer, it is unusually high for now and having a significant impact.

Nights have all of a sudden become much more difficult to sleep, warming 10-15 degrees in the space of four nights. Last night Adelaide stayed warmer than 21 degrees and tonight looks similarly warm. If the city stays warmer than 20 degrees it will make it the warmest pair of nights this early in the season since 1999.

Combined with the warmth, the humidity is contributing to rain and thunderstorms with help from a slow-moving low pressure trough, a winner for tanks, dams, most gardens and some paddocks.

Humidity, rain and storms are protecting the state to some degree, keeping frost well away and reducing dust storms and fire danger for a while.

However, rainfall, particularly thunderstorms, are far from ideal on grain crops at this time of year. Little benefit can be achieved this late in the season, maturing crops are more at risk of being damaged by it.

Between now and mid-week, scattered falls of 10-20mm are likely across the south. There is potential for a few places to gain 20-40mm, up to a month's worth, most likely in the southeast. Among the rain, intense thunderstorms are on the cards, particularly east of the Mt Lofty and Flinders ranges, on Monday.

- Weatherzone

© Weatherzone 2018

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