The monitoring system also reported 56 low-intensity exhalations during the last 24 hours.
The World Health Organization declared the Zika outbreak, suspected of causing thousands of birth defects in Brazil, an international health emergency on Feb. 1.
Two-thirds of the countries in North, Central and South America routinely use such laws to silence dissent and keep information from their citizens.
ICE has for years provided inadequate medical care at its detention facilities, leading to in-custody deaths, according to a report by a coalition of advocacy groups.
One explosion, 29 minutes of harmonic tremor, and a volcano-tectonic event were also registered.
Four explosions and two volcano-tectonics events were also reported.
Slight incandescence was also observed over the crater at night.
Six minutes of low-amplitude harmonic tremor were also recorded.
Three low-intensity explosions were also registered.