= Yellowstone National Park
Yellowstone Monthly Update
The Yellowstone Volcano Observatory provides timely monitoring and hazard assessment
of volcanic, hydrothermal, and earthquake activity in the Yellowstone Plateau region.
Friday, June 01, 2018 3:36 PM US/Mountain
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
YVO – not just Yellowstone! Meet the volcanoes of the American Southwest!
June 18, 2018
The Yellowstone Volcano Observatory (YVO) is aptly named – the consortium of 8 organizations collaborates to study and monitor the active geologic processes and hazards of the Yellowstone Plateau. However, that's not all we do. The U.S. Geological Survey Volcano Hazards Program, one of the consortium members, is responsible for monitoring all potentially active volcanoes in the country. It just so happens that a nearly a dozen of these volcanic centers are within the Yellowstone Volcano Observatory's area of responsibility – and only one of them is Yellowstone! So, what are these other YVO volcanoes?
Find out in this week's edition of Yellowstone Caldera Chronicles!
May 14, 2018
Steamboat Geyser, in the Norris Geyser Basin, appears to have entered a phase of more frequent water eruptions, much like it did in the 1960s and early 1980s. Although these eruptions do not have any implications for future volcanic activity at Yellowstone (after all, geysers are supposed to erupt, and most are erratic, like Steamboat), they are nonetheless spectacular, and hopefully many people will have a chance to see Steamboat in eruption during the summer of 2018.
To keep track of the geysering, we will keep an updated count of Steamboat water eruptions on this page. So far in 2018, Steamboat has erupted 10 times (all times below are local):
- March 15, 5:37 AM
- April 19, 4:30 PM
- April 27, 6:30 AM
- May 4, 11:50 PM
- May 13, 3:54 AM
- May 19, 9:49 PM
- May 27, 7:33 PM
- June 4, 9:05 AM
- June 11, 1:06 AM
- June 15, 4:55 PM
Would you like to become a Steamboat watcher? If so, there are three datasets to keep an eye on:
- Seismic station YNM, in the Norris museum, is the first indicator of an eruption. The webicorder for the station is located here. Look for a thick seismic trace that lasts 30-60 minutes.
- About 90 minutes after eruption, increased discharge can often be seen at the Tantalus stream gage. You can get that information here. Scroll down to the plot "Discharge, cubic feet per second" and look for a spike and subsequent decay, but be careful...precipitation can cause spikes too! Rainfall information is given in another plot on that page.
- Each night, temperature data from a sensor in the Steamboat drainage channel is downloaded and posted on line. A sudden and short-lived (minutes-long) spike in temperature indicates a Steamboat eruption. To view those data, go to the YVO monitoring map and zoom in on the Norris area. Hover over any of the thermometer symbols to see their names, and click on the one labeled "Steamboat" to see data from various time periods past.
Have fun! You might also check out the Steamboat page at geysertimes.org for information about Steamboat activity.