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Yellowstone Just EXPLODED Again — Rocks Thrown 100 FEET High

Crisis Radar

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On September 27, 2026, at about 8:12 p.m., a pool at Biscuit Basin in Yellowstone National Park exploded and threw boiling water, steam, mud and rocks at least 100 feet into the air. The pool had formed only in June, after another explosion tore a 61-foot fissure through the ground nearby. It is the third hydrothermal explosion at the same basin since July 23, 2024, when a blast sent more than 1,400 rocks across a boardwalk with about two dozen visitors on it. The U.S. Geological Survey found no detectable warning before that one. Yellowstone's volcano alert level is NORMAL and has not changed.

This video goes through each explosion, explains why hot water, not magma, is the hazard Yellowstone actually delivers, and lays out what is known about the magma system underneath, including the cap of molten rock found 2.4 miles down in 2025.

IN THIS VIDEO • September 27, 2026: the pool that did not exist in May • July 23, 2024: "It just exploded and became like a black cloud that covered the sun" • No detectable precursors • April 2024 to September 2026, blast by blast • How big these explosions get: Mary Bay, a crater 1.5 miles wide • What "green" does and does not mean • The magma cap at 3.8 km and the four reservoirs • The Norris uplift • The odds of a supereruption, in USGS's own numbers • Geysers changing, staff cuts, and the 1959 earthquake

SOURCES USGS Yellowstone Volcano Observatory monthly updates (July to October 2026) · USGS Caldera Chronicles (June 22, Aug 3 and Sept 28, 2026; Aug 5, 2024; Jan 6, 2025) · USGS hydrothermal explosions page · National Park Service news release (July 23, 2024) · Associated Press (July 2024) · Duan & Schmandt, Nature (2025) and Rice University News · Bennington et al., Nature (2025) · Mastin, Van Eaton & Lowenstern ash model (2014) · Cowboy State Daily (May 2, 2026) · Wyoming Public Media (Mar 19, 2026) · The Hill (Oct 2025)

RELATED Yellowstone explosion 2026 · Biscuit Basin · Black Diamond Pool · hydrothermal explosion · Yellowstone supervolcano · Norris Geyser Basin uplift · Yellowstone magma cap · Mary Bay crater · Yellowstone Volcano Observatory

Yellowstone's alert level is NORMAL and its aviation color code is GREEN. The U.S. Geological Survey reports no sign of an approaching volcanic eruption. Hydrothermal explosions are a separate hazard and can occur without warning. Biscuit Basin has been closed to visitors since July 2024.

#Yellowstone #YellowstoneVolcano #BiscuitBasin #Supervolcano #USGS #HydrothermalExplosion #Wyoming #NationalParks #CrisisRadar

20 Comments

@gregwarner3753 11 hours ago

In case people have not noticed, Yellowstone is a not so dormant volcano.

@DarrylL.Chapman 11 hours ago

I lived in SLC and worked in Cody and used to cut through the park to get to work. At Norris, I stopped to used the bathroom there was a little bubbler in the edge of the parking lot. I stuck my finger in the bubbler and the water was HOT. After my 28 day shift at Cody, I cut back through the prk and the parking lot was GONE. This was in 1982.

@crystalweible152 11 hours ago

Because it doesn't do much for decades people forget that it's very unstable. If the animals start evacuating we should too!

@dhadbaoui 11 hours ago

100 ft is a burp.

@bobbys4327 7 hours ago

It is amusing that people think this is a stable static planet.

@davidgrisez 11 hours ago

Now we know that these Geyser Basins in Yellowstone National Park can have large and dangerous steam explosions. It is good that no one was killed.

@charles8081 10 hours ago

It's not sleeping at all, you'll see.

@marinoceccotti9155 10 hours ago

I'm an old geezer too. I hope I don't explode, but one never knows.

@oldJarhead57103 12 hours ago

1 in 730,000 chance of an eruption? Tell me, something. What are the odds of hitting any lottery jackpot?

@spiritmoonintuitive 8 hours ago

I'm thankful to have gone to Yellowstone a number of times as a child.

@JeffDunkleman 9 hours ago

Um. Where does the heat come from that makes the steam? Yeah, that's right. The magma below is moving and heating and cracking the rock. This steady heating creates higher and higher pressure until the broken rock can't hold anymore.

@2l84t 10 hours ago

Sounds like a hydrotherma pocket steam explosion .

@georgeszentesi441 9 hours ago

These are precursors to an eruption ,simple physics.

@pechpal5932 3 hours ago

thank you for information yellowstone news.

@Stanpianoman-zs7gy 2 hours ago

I went there 57 years ago and it was scary as hell then.i never wanted to go back. Now I really never want to go back.

@Afterburnt420 10 hours ago

Is that super volcano misbehaving?

@willhandy5345 10 hours ago

To answer your question, the alert levels refer only to the likelihood - or progress - of a magmatic volcanic eruption. They do not refer to overall risk level. That is impossible to predict, for the reasons you enumerate. Yellowstone is a risky place. Parts blow up. It has severe earthquakes. There’s scalding-to-boiling water that, if you’re stupid, you can fall into. Stay on the boardwalks, realize that things can go south at any moment, and hope they don’t do it while you’re nearby. If that’s too scary for you - stay home!

@johnrettig1880 5 hours ago

I have personally witnessed on several occasions. Demonstrations that where a pot of boiling water was introduced to a drop of ice water, causing an explosion .

But Yellowstone is so hot everywhere.
The only thing I could figure is that water from somewhere else may have been slightly cooler but I still don't see how .