Total fire bans have been issued for all of South Australia tomorrow as temperatures are expected to reach the mid 40s in some regions.

It is the first time in two years a total fire ban has been issued for all 15 fire districts, including metropolitan Adelaide.

Winds topping 50km/h and temperatures ranging from the high 30s to the mid 40s will create extreme fire danger, and more than 11,000 firefighters are on standby.

Making matters even worse, police are currently investigating two suspicious fires at Happy Valley and another at Blewitt Springs, fuelling fears a firebug in the southern suburbs has resurfaced.

Many Country Fire Service (CFS) volunteers are exhausted after spending the past fortnight fighting a massive bushfire near Port Lincoln, and even though it is under control, there are fears it could flare up.

The CFS says a blaze near the Victorian border is already causing some concern.

“We’ve got a fire north of Pinaroo and we’ve dispatched aircraft to that, the Department of Environment, Water and Natural Resources are there as well and they are deploying graders,” CFS state co-coordinator Brenton Eden said.

Police say there will be zero tolerance for anyone who deliberately or accidentally lights a fire tomorrow.

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