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---
title: Rare Weather Phenomenon Causes Sea of Clouds to Fill the Grand Canyon
description: A rare weather phenomenon has caused the Grand Canyon to fill up with fog.
canonical: https://time.com/3631175/grand-canyon-cloud/
author: Helen Regan
article:opinion: false
article:content_tier: free
article:published_time: 2014-12-12T03:22:58.000Z
article:modified_time: 2026-02-22T02:48:06.124Z
article:section: Science
og:title: Sea of Fog Swamps the Grand Canyon
og:description: It's caused by a cloud inversion.
og:url: https://time.com/3631175/grand-canyon-cloud/
og:site_name: TIME
og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blte9831e68648f7a82/69876e60a988cafe5f6ab58c/grand-canyon-clouds-_wong.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9
og:image:width: 2514
og:image:height: 1414
og:image:alt: Grand Canyon Clouds
og:type: article
twitter:card: summary_large_image
twitter:title: Sea of Fog Swamps the Grand Canyon
twitter:description: It's caused by a cloud inversion.
twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blte9831e68648f7a82/69876e60a988cafe5f6ab58c/grand-canyon-clouds-_wong.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9
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![](https://static.time.com/v3/assets/bltea6093859af6183b/blte9831e68648f7a82/69876e60a988cafe5f6ab58c/grand-canyon-clouds-_wong.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9)


# A Rare Weather Phenomenon Is Causing a Sea of Clouds to Fill the Grand Canyon

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by 

[Helen Regan](https://time.com/author/helen-regan/)


## Helen Regan


Dec 12, 2014 3:22 AM UTC

![Grand Canyon Clouds](https://static.time.com/v3/assets/bltea6093859af6183b/blte9831e68648f7a82/69876e60a988cafe5f6ab58c/grand-canyon-clouds-_wong.jpg?branch=production&width=1200&quality=75&auto=webp&crop=3:2)

This photo provided by the National Park Service shows dense clouds at the south rim of the Grand Canyon on Dec. 11, 2014 in Arizona.

This photo provided by the National Park Service shows dense clouds at the south rim of the Grand Canyon on Dec. 11, 2014 in Arizona. Maci MacPherson—;AP

by 

[Helen Regan](https://time.com/author/helen-regan/)


## Helen Regan


Dec 12, 2014 3:22 AM UTC

A rare weather phenomenon has caused the Grand Canyon to fill up with [fog](http://bigstory.ap.org/article/be9360adf4564337afaa31caa43f5078/clouds-fill-grand-canyon-rare-weather-event).

The weather pattern is called a “total cloud inversion” and occurs when clouds are forced down by warm air and cannot rise, the Associated Press reports.

Instead of the usual stunning views, visitors to the national park gaze out over a fluffy white blanket.

The National Weather Service in Arizona says the phenomenon happens every few years.

For those planning on visiting one of the world’s most famous natural wonders, the fog is expected to dissipate after Thursday.

\[[_AP_](http://bigstory.ap.org/article/be9360adf4564337afaa31caa43f5078/clouds-fill-grand-canyon-rare-weather-event)\]

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