USPS has reported a couple of moderately strong (M4.x - 5.x) aftershocks in the vicinity where the M7.4 earthquake struck.
-NW

Very strong magnitude 7.4 earthquake 34 km east of Zamora, Ecuador
Fri, 31 Jan 2025, 23:13 | BY: EARTHQUAKEMONITOR

[snip]

A very shallow magnitude 7.4 earthquake was reported early evening near Zamora, Cantón Zamora, Zamora-Chinchipe, Ecuador.

According to The Colombian Geological Service (SGC), the quake hit on Friday, January 31st, 2025, at 6:01 pm local time at a very shallow depth of 5 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.

If the preliminary data about magnitude and depth are correct, the quake was extremely dangerous. It has the potential to cause catastrophic impacts on people and infrastructure, probably involving severe and wide-spread damage, especially in areas near the epicenter.