Zhihu Hot List
Latest recorded position: #11 on Jul 30, 2026, 9:07 PM CST.
There are not enough retained observations to calculate a rank change.
Why Did a Giant Mushroom Cloud Appear During the Kumamoto Earthquake? Is It a “Quake Cloud”?
日本熊本县地震时天空出现巨型蘑菇云，为什么会出现这种现象？网友猜测其为地震云，这到底是什么云？
ThreadEast first recorded "Why Did a Giant Mushroom Cloud Appear During the Kumamoto Earthquake? Is It a “Quake Cloud”?" on Jul 30, 2026, 9:07 PM CST. It has been observed on Zhihu Hot List, with less than one hour between the first and latest recorded appearances.
What the trend data tells us
The English title describes the topic of the source listing. Its appearance in a ranking measures attention within that platform; the ranking alone does not explain the cause of a spike or verify the underlying claim.
This stable URL remains available after a topic leaves a live ranking. Observation span is elapsed time between sightings, not continuous time on a chart. Platforms use different ranking and heat systems; their metrics are not added together.
Original evidence
Source listings
#11Source metric: 152 万热度
Original source