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= YVO Area Of Responsibility
= Yellowstone National Park
= Yellowstone Caldera
Yellowstone Monthly Update
Wednesday, May 01, 2019 5:26 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

Colter's Hell: Tales of the First European-American to Step Foot in Yellowstone
May 20, 2019

Imagine for a moment that you could turn back the clock some two-hundred years or so and embark on a journey from east to west across the North American continent. You would be unaware of what lay beyond the great plains of the American heartland and oblivious to the Rocky Mountains that would thwart your path. Imagine that you had never heard of Yellowstone, or geysers and hot springs, and as far as you were concerned nature was epitomized by the patchy, deciduous forests and rolling hills of the Appalachian Mountains. During your march west, you would find yourself alone at the doorstep of another world, the smell of rotten eggs in the air, game abundant, the ground soft but warm beneath your aching feet, and all around you are jets of steaming water and pools of colorful splendor. Would anyone ever believe you if you told them what you saw? So goes the life of the first mountain man to see Yellowstone: John Colter.

Tales of Colter's amazing journey are the subject of this week's Yellowstone Caldera Chronicles!


Yellowstone monthly video update for May 1, 2019
May 01, 2019
Check out the YVO monthly video update for May 1, 2019! This month's report introduces you to some of the YVO scientists responsible for monitoring activity in the Park.
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 16 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


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.