Volcano Watch

This week is the 91st anniversary of the largest eruption on earth since Krakatau exploded in 1883. We are also ending the 4th week of an ongoing...

Many of us are aware of the "sister city" program, in which two cities form a relationship to promote understanding, cultural and educational exchange...

Throughout the early morning of August 27th, 1883 and into the late afternoon, the inhabitants of Rodriguez Island—a small speck of land in the...

For the past week, a billowing column of dark volcanic ash has been erupting from Anatahan Volcano in the Northern Mariana Islands, burying parts of...

The primary goal of the U.S. Geological Survey's Hawaiʻian Volcano Observatory is to provide scientific information that can be used to reduce risks...

April 26, 2003, marks the 30th anniversary of the magnitude M6.2 Honomu earthquake. This earthquake occurred at 10:26 a. m. and was centered north of...

People like to hear about record-holders-the biggest, fastest, best. That's why we're frequently asked, "What's the world's most active volcano? Is it...

The four islands of Maui, Moloka`i, Lana`i, and Kaho`olawe were once all connected as a vast landmass known as Maui Nui, literally "big Maui." This...

Kilauea has one of the most active fault systems in the world. The Koa`e fault system is 2-3 km (1.2-1.8 miles) wide and extends about 17 km (10 miles...

About this time every year, we have an article or two on the topic of tsunami. The month of April is observed as "Tsunami Awareness Month" in Hawai`i...

Residents of the Big Island have been living with the nearly continuous eruption of Kīlauea for a bit over 20 years. They have become familiar with...

The recent serious injury incurred by a visitor to the Mother's Day lava flow field prompted this article. Shortly after midnight on March 10, a...

The summit of Kīlauea has been quiet for more than 20 years. Pu`u `O`o and Kupaianaha have hogged the limelight since January 3, 1983. Two eruptions...

One morning, you're awakened by a violent shaking of your bed; you hear the glass jalousies rattle, and the dog barks hysterically. In the seconds it...

The past ten days have seen lava cross the Chain of Craters Road to form a new lava entry at the ocean's edge. Wildfires of the Panau Iki blaze...

Hawai`i is often described as the ideal setting for studying active volcanic processes. After all, where else can you find a "drive in" volcano that...

Little more than a mile down the Chain of Craters Road from Crater Rim Drive, a large tract of bare ground suddenly appears on the right, and curious...

For more than twenty years, Kīlauea has been erupting almost continuously. In the early years, the eruption alternated between dramatic fountains and...

The inflation of Mauna Loa Volcano that started last year appears to be slowing down. From May 2002 until very recently, continuously recording...

On January 4, as lava flowed from the Pu`u `O`o cone 11 km (7 miles) to the south shoreline of Kilauea Volcano, the staff of the Hawaiian Volcano...