Stopped at West Thumb on the way home. In terms of thermal activity, nothing to report. Lots of craters with opaque hot water at the bottom, more deep holes discharging boiling water, and nothing even splashing or sputtering or even sizzling.
What was noteworthy were the number of elk. Saw at least five or six hanging around in the thermal area and parking lot, including a mother and fawn right next to the boardwalk blocking southern access to the lakeshore, requiring a lot of backtracking. Then I heard one bugle off beyond the parking lot.