A 5..2-magnitude earthquake struck near the Iranian capital, Tehran, late on December 20, killing one person and injuring nearly 100 more despite causing only minor damage. But tens of thousands of people spent the night outside, bracing for aftershocks.
Sleepless In Iran: After Latest Earthquake, Tehranis Brave The Cold

5
But not everyone stocked up on essential supplies.

6
Some Tehran residents found refuge in their cars and sought safer ground or just ran their engines for warmth in the cold conditions.

7
Iran lies on a plateau that is highly susceptible to tectonic activity. Hundreds of people were killed in a November earthquake on the Iran-Iraq border that is still fresh in people's minds.

8
Schools, universities, and government offices would be closed in Tehran, Alborzn, and Qom provinces on December 21, state television said.