The thermal activity of Stromboli has been monitored through the processing of a variety of satellite images with different temporal, spatial, and spectral resolutions. The Figure shows the estimates of radiant power from 02-04-2025 to 30-04-2025, calculated using SEVIRI, MODIS, VIIRS, and SLSTR multispectral images.

In the past week, thermal activity in the summit area has generally been at a low level, with a few isolated moderate thermal anomalies. The maximum thermal flux anomaly is 5.28 MW (VIIRS), recorded on 2025-04-29 01:36:00 UTC.

The latest thermal flux anomaly (0.74 MW, SLSTR) was recorded on 2025-04-30 01:18:00 UTC. However, in the past week, poor weather conditions have often affected the analysis of satellite images.