YELLOWSTONE VOLCANO OBSERVATORY INFORMATION STATEMENT
Sunday, September 15, 2013 12:00 PM MDT (Sunday, September 15, 2013 18:00 UTC)
YELLOWSTONE VOLCANO (CAVW #1205-01-)
N4425 W11040, Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
The University of Utah, a YVO member agency, has sent out the following press release about a magnitude 3.6 earthquake that occurred amid three ongoing earthquake swarms in Yellowstone National Park.
The current earthquake swarms are well within established norms for the Yellowstone region and the Yellowstone Volcano Observatory has determined that they present no volcanic hazard.
University of Utah Seismograph Stations
Released: September 15, 2013 11:07 AM MDT
The University of Utah Seismograph Stations reports that a light
earthquake of magnitude 3.6 occurred at 09:53:02 AM on September 15,
2013 (MDT) that was felt by persons in Yellowstone. The epicenter of
the shock was located in Yellowstone National Park near the Lower
Geyser Basin area, 8 miles north of Old Faithful, and 15 miles SE of
the town of West Yellowstone, Montana. This earthquake is the largest
of an ongoing sequence of swarms that began on September 10, 2013 and
has included swarms near Lewis Lake, the Lower Geyser Basin and in an
area NW of Norris Geyser Basin. A total of 130 earthquakes of
magnitude 0.6 to 3.6 have occurred in these three areas however, most
have occurred near the Lower Geyser Basin. Notably much of the
seismicity in Yellowstone occurs as swarms. The University of Utah
Seismograph Stations continues to monitor Yellowstone earthquakes and
will provide additional information if the earthquake swarm activity
increases. Anyone who felt any of these earthquakes is encouraged to
fill out a felt report on the U.S. Geological Survey website at:
The Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.
YVO Member agencies: USGS, Yellowstone National Park, University of Utah, University of Wyoming, UNAVCO, Inc., Wyoming State Geological Survey, Montana Bureau of Mines and Geology, Idaho Geological Survey
after Long valley Now Yellowstone?? have you check Toba Lake too ?? Creazy day...
It is probably just a coincidence that both Yellowstone and Long Valley are having earthquake swarms............... (yes i'm being sarcastic)
What really spooks me though is that a good portion of the USA does not even know what a supervolcano is even though we are sitting on at least three of them. Can you imagine if they actually taught us in grade school what a supervolcano is and what it means? Maybe you were taught about them but I had to find out for myself what a supervolcano is.
There is a sleeping super volcano in Europe, and it isn't in Italy (a country famous for its eruptions). This giant is located under the Laacher See, a caldera lake in Germany, and it is showing signs of life. Should it erupt, it could spew billions of tons of magma as far as 620 square miles. Update inside.
La Garita Caldera is a large volcanic caldera located in the San Juan volcanic field in the San Juan Mountains in southwestern Colorado, United States, to the west of the town of La Garita, Colorado. The eruption that created the La Garita Caldera was, perhaps, the largest known explosive eruption in all of Earth's history (the Siberian Traps may have been larger but the cause is still being debated). The La Garita Caldera is one of a number of calderas that formed during a massive ignimbrite flare-up in Colorado, Utah and Nevada from 40–25 million years ago, and was the site of truly enormous eruptions about 28–26 million years ago, during the Oligocene Epoch. The area devastated by the La Garita eruption is thought to have covered a significant portion of what is now Colorado, and ash could have fallen as far as the east coast of North America and the Caribbean.
The scale of La Garita volcanism was far beyond anything known in human history. The resulting deposit, known as the Fish Canyon Tuff, has a volume of approximately 1,200 cubic miles (5,000 km3), enough material to fill Lake Michigan (in comparison, the May 18, 1980 eruption of Mt. St. Helens was only 0.25 cubic miles (1.0 km3) in volume). By contrast, the most powerful human-made explosive device ever detonated, the Tsar Bomba or Emperor Bomb, had a yield of 50 megatons, whereas the eruption at La Garita was approximately 105 times more powerful. It is possibly the most energetic event on Earth since the Chicxulub impact, which was 50 times more powerful.
reply to post by PuterMan
Well first of all, I didn't shout. See any ALL CAPS anywhere? No. I merely posted an incoming swarm event. If people want to flag it to the front page, well then don't hold me responsible.
Second of all, they are just now starting to backfill all the quakes in that swarm, so your data is erroneous. There is a LOT more that happened. Seeing that swarm come in on spectro IS worth shouting over, cause it looks way different than what any of you see- except maybe you- if you were to pull the raw data and view it that way. Cause then you'd see just how many rapid fire quakes happened, one after the other. It IS scary looking- especially when I can compare it to raw data spectrograph plots I have of the Okmok eruption, for example. But even then- I never shouted.
So cool it, grumpy.
reply to post by whatnext21
Laacher Sea can't produce a supereruption so I would suggest we avoid calling it a Super Volcano. Except if you talk about the place itself who's a nice vacantion spot and could be called Super and Beautifull.
Super Eruption -> VEI 8 -> volcano ejects 1 000 + km3 of tephra.