MODVOLC uses infrared satellite data acquired by NASA’s MODIS instrument to monitor Earth’s surface for the thermal emission signature of volcanic eruptions, wildfires, and anthropogenic heat sources (e.g. gas flares). Two MODIS sensors, one on the Terra satellite, one on the Aqua satellite, allow the entire Earth to be monitored every 48 hours. If an eruption is detected, its details are reported here, usually within 12-18 hours of the satellite passing over the volcano. You can search, plot, and download the data using the tools below. If you are unsure as to what you are looking at, this page provides links to published papers and other information that describe the data, and this website. This project is funded by NASA grant NNX14AP37G.

1. Which volcano are you looking for?
Volcano name:
Volcano ID:
2. What period of time?
Start date:
End date:
3. Which MODIS sensor?
4. What time of day?
5. Observation geometry?
Sunglint angle:
Scan angle:
6. Which variable would you like to plot?
Number of hot-spot pixels Radiant flux 3.959µm spectral radiance
7. Progress
8. View/Save data

Questions? Email Eric Pilger, Ethan Kastner, or Robert Wright

© University of Hawaii at Manoa, 2016