Continual ash emission from this as well as some of the other fumaroles has coated snow in the Sherman Crater area with a gray blanket at least 1 cm thick. Several analyses of the ash show it to be composed largely of secondary minerals, old rock fragments, and pyrite-covered sulfur droplets. A very small fraction of vesicular glass in some ash samples is currently thought to be reworked older material. No strong seismic trend has yet been detected. Furthermore, a hydrogen and temperature sensor, several tilt and gravity stations, and time-lapse cameras have not been in operation long enough to show definite trends.
Additional monitoring includes aerial photographic, thermographic, and sulfur surveys.
The other large thermal area on Mount Baker, the Dorr fumarole field on the N side of the cone, has not yet shown significant changes in activity compared to previous years.