Heavy rain is not unusual in Argentina at this time of year.
But inhabitants in the western province of Neuquen are experiencing their worst flooding in four decades, with severe disruption in several towns.
At least 2,000 people in a number of Argentinian regions have had to flee their homes amid bad weather that has halted public transport and closed schools.
No deaths have been reported so far.
In April 2013, dozens of people were killed and hundreds left homeless in flash floods in Buenos Aires province.
The capital has not been spared this year and was hit by a big electrical storm overnight.