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= Yellowstone National Park
= Caldera
Yellowstone Monthly Update
Wednesday, January 02, 2019 5:13 PM US/Mountain
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
 
YVO's Mission
The Yellowstone Volcano Observatory provides timely monitoring and hazard assessment of volcanic, hydrothermal, and earthquake activity in the Yellowstone Plateau region.

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We continue to monitor and report on volcanic activity during any lapse in appropriations.
December 21, 2018

During the current federal government shutdown, the Volcano Hazard Program and all five U.S. Volcano Observatories will continue to issue updates, warnings, and notifications through the usual channels, including websites, email, and social media. The volcano monitoring data on this website will be kept up to date and all monitoring instruments will continue to be operational. Static website content will not be updated until further notice and information may be outdated. More information is available at https://www.doi.gov/shutdown.


Steamboat Counter
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 many people had 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. In 2018, Steamboat erupted 32 times (a new record for a single calendar year!), and so far the geyser has erupted 2 times in 2019. 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
  • July 6, 1:38 PM
  • July 20, 10:36 PM
  • August 4, 2:10 PM
  • August 22, 11:44 AM
  • August 27, 9:30 PM
  • September 1, 11:21 PM
  • September 7, 10:20 AM
  • September 12, 4:23 AM
  • September 17, 9:38 AM
  • September 24, 5:18 AM
  • September 30, 6:55 PM
  • October 8, 10:25 AM
  • October 15, 2:12 PM
  • October 23, 9:29 PM
  • October 31, 8:22 AM
  • November 7, 4:16 PM
  • November 15, 11:04 AM
  • November 21, 7:10 PM
  • November 28, 8:37 PM
  • December 8, 1:07 AM
  • December 17, ~12:30 PM
  • December 25, 11:21 PM
  • January 4, 2018 4:19 PM
  • January 16, 2018 7:12 AM


Would you like to become a Steamboat watcher? If so, there are three datasets to keep an eye on:
  1. 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.
  2. 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.
  3. 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.


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Quick Facts
Location: Wyoming and Montana
Latitude: 44.615° N
Longitude: 110.6° W
Elevation: 2,805 (m) 9,203 (f)
Volcano type: Caldera
Composition: basalt to rhyolite
Most recent eruption: 70,000 years ago—lava, current—hydrothermal explosions
Alert Level: Normal (2019-01-02 23:13:35)