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= YVO Area Of Responsibility
= Yellowstone National Park
= Yellowstone Caldera
Yellowstone Monthly Update
Monday, July 01, 2019 12:26 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 and southwestern U.S.

Features   (archive)

Young Volcanoes in AZ, CO, MT, NM, UT and WY

A new view of Old Faithful's underground plumbing system
July 15, 2019

Since Yellowstone National Park was founded, the iconic Old Faithful geyser has attracted millions of tourists every year. Although Old Faithful's activity on the surface is well observed and monitored, our current knowledge of the subsurface properties and processes, such as the depth of the plumbing system and how Old Faithful recharges over time, remains largely unknown. But new research is helping to shed light onto this problem by using seismology to image geysers in much the same way as an MRI is used to image the human body.

The details are in this week's Yellowstone Caldera Chronicles!


YVO monthly video update for July 1, 2019
July 01, 2019
Check out the YVO monthly video update for July 1, 2019! This month's report discusses Steamboat's record-setting month, as well as seismic and deformation data.
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 and now in the summer of 2019 as well.

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 27 times in 2019. All times below are local.

  • March 15, 2018 5:37 AM
  • April 19, 2018 4:30 PM
  • April 27, 2018 6:30 AM
  • May 4, 2018 11:50 PM
  • May 13, 2018 3:54 AM
  • May 19, 2018 9:49 PM
  • May 27, 2018 7:33 PM
  • June 4, 2018 9:05 AM
  • June 11, 2018 1:06 AM
  • June 15, 2018 4:55 PM
  • July 6, 2018 1:38 PM
  • July 20, 2018 10:36 PM
  • August 4, 2018 2:10 PM
  • August 22, 2018 11:44 AM
  • August 27, 2018 9:30 PM
  • September 1, 2018 11:21 PM
  • September 7, 2018 10:20 AM
  • September 12, 2018 4:23 AM
  • September 17, 2018 9:38 AM
  • September 24, 2018 5:18 AM
  • September 30, 2018 6:55 PM
  • October 8, 2018 10:25 AM
  • October 15, 2018 2:12 PM
  • October 23, 2018 9:29 PM
  • October 31, 2018 8:22 AM
  • November 7, 2018 4:16 PM
  • November 15, 2018 11:04 AM
  • November 21, 2018 7:10 PM
  • November 28, 2018 8:37 PM
  • December 8, 2018 1:07 AM
  • December 17, 2018 ~12:30 PM
  • December 25, 11:21 PM
  • January 4, 2019 4:19 PM
  • January 16, 2019 7:12 AM
  • January 25, 2019 12:32 PM
  • February 1, 2019 3:21 PM
  • February 8, 2019 8:46 PM
  • February 16, 2019 1:06 AM
  • February 25, 2019 11:42 AM
  • March 4, 2019 11:39 PM
  • March 11, 2019 1:54 AM
  • March 17, 2019 2:54 PM
  • March 25, 2019 5:37 PM
  • April 8, 2019 8:44 PM
  • April 25, 2019 10:25 PM
  • May 3, 2019 2:20 AM
  • May 8, 2019 8:01 AM
  • May 13, 2019 7:56 PM
  • May 20, 2019 3:23 PM
  • May 27, 2019 5:30 PM
  • June 1, 2019 8:47 PM
  • June 7, 2019 1:13 AM
  • June 12, 2019 12:52 PM
  • June 15, 2019 4:40 PM
  • June 19, 2019 2:20 AM
  • June 23, 2019 12:46 PM
  • June 28, 2019 11:44 PM
  • July 4, 2019 1:16 AM
  • July 10, 2019 7:09 PM


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.