Parts of eastern Australia recorded unusually high temperatures for early May on Friday, with daytime readings running 10 to 14 degrees Celsius above average across four states, according to the Bureau of Meteorology (BoM).
The exceptional warmth was driven by a high-pressure system that pulled warm northerly winds across south-eastern Australia, the BoM said. The conditions produced record-breaking temperatures for the start of May in many locations.
Sharp change expected
The warm spell is expected to be short-lived. A cold front is moving toward eastern Australia, set to bring rain, thunderstorms, and significantly cooler temperatures to regions currently experiencing the unseasonable heat.
The Guardian reported the incoming system will effectively wash out the record warmth, representing a dramatic shift in conditions over a short period.
Context
Early May typically marks the transition into autumn across southern and eastern Australia, when temperatures begin to moderate after summer. Readings so far above average for the period are considered highly unusual by meteorological standards.
The BoM has not yet detailed the full extent of specific records broken, but the scale of the anomaly - spanning multiple states simultaneously - points to an unusually strong northerly wind pattern ahead of the cold front's arrival.
Residents in affected areas have been advised to expect rapidly changing conditions as the front passes through, with the combination of heat, humidity, and the approaching cold air mass creating the potential for severe thunderstorm activity.
