Following an earlier suspension of play due to extreme heat, the tennis was further interrupted later in the day by heavy rainfall.
Reuters photographer Brandon Malone captured a lightning bolt appearing in the Melbourne skyline while Michal Przysiezny played Stephane Robert played on an outdoor court.
Play has currently resumed on the covered showcourts for the evening session. Andy Murray's second round match has been delayed.
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Outbreaks of rain and strengthening winds will affect southernmost parts of England and Wales today.
An earlier debate on the issue was suspended as an 'expression of support' following the Westminster terror attack.
Five people were killed and dozens more were injured after a car and knife attack in the capital on Wednesday afternoon.