Weatherzone detected 1.37 million lightning pulses in central and eastern Australia overnight.
These included both cloud-to-cloud and cloud-to-ground lightning.
It comes after severe thunderstorms across most of Australia.
Heavy rains flooded the Australian outback, cutting roads and inundating some creeks and rivers.
The Todd River in Alice Springs is in flood today after 140 millimeters of rain over the past three days.
About 100 millimeters of rain fell in the territory on Wednesday, which was the heaviest daily rain in more than 20 years.
More rain and thunderstorms are on their way to parts of central, southern and eastern Australia.
A low pressure system will produce heavy rains and thunderstorms across Queensland, New South Wales, ACT, Victoria and South Australia today.
Flood watches and warnings as well as severe weather warnings are already in place.
Residents are warned not to cross flood waters.
“Some of Thursday’s rain will fall on already saturated ground, so flooding is likely,” Weatherzone’s Ben Domensino said.
“Check the latest warnings for your area for up-to-date details and never walk through flood water. “
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