The latest quake struck at 16:45 CET, 19km southwest of Mamurras — close to the coastal city of Durres that was worst-hit by Tuesday's devastation — according to preliminary data from the USGS.
It came after Prime Minister Edi Rama said authorities were working to match spare hotel rooms to thousands of survivors left homeless.
"It is winter time, they can not stay under tents ... kids need to do their homework, people need to be warm and so on," he said during a visit to the coastal city of Durres, warning that it was "not something we can do like that," snapping his fingers.
As Albania marked a national day of mourning for Tuesday's magnitude-6.1 earthquake, recovery efforts were continuing in the rubble of collapsed buildings.
Some 4,000 rescue workers, including paramedics and military police, were involved in search and rescue.
Many Albanians who lost their homes slept in hundreds of tents laid out in gyms, sports fields and stadiums.
Videos and photos posted to social media in the immediate aftermath showed residents in several communities looking through the devastation as others showed damaged videos and roads.
One video broadcast live from Fushë-Krujë, in Durres county, showed a child screaming as rescuers tried to pull him from the rubble of what appeared to be a collapsed building.
Speaking to Euronews from Tirana, developer Silver Turku said he had rushed outside his home after the quake and later saw a vehicle that had burst into flames.
"I was home and working as a freelancer and it was strong and lasted for about less than a minute," he said.
"After the earthquake, everybody in my in my neighbourhood got outside and we were making sure everyone was okay and needed help.
Turku said he had started filming his video around 10-15 minutes after the earthquake as emergency services fought to extinguish the fire.
"I don't know for sure why it was set on fire but people were saying that a spark in electricity might have happened after the alarm had set off," he added.
"It's a good thing that I was awake and went straight outside," he said. "But you feel powerless and hope for the best in these situations."
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