Skip to main content
U.S. flag

An official website of the United States government

Volcano Watch

Volcano Watch is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory scientists and affiliates. 

Filter Total Items: 1780
Volcano Watch — Flames from vents are hydrogen gas burning

Volcano Watch — Flames from vents are hydrogen gas burning

Large and colorful flames sometimes play from vents on Kīlauea volcano. These flames, which range from yellowish orange to greenish blue and reach as...

Read Article
Volcano Watch — The 1955 eruption: spur to a new era of understanding Kīlauea

Volcano Watch — The 1955 eruption: spur to a new era of understanding Kīlauea

The 1955 eruption in lower Puna, described in last week's column, was destructive. About 1,580 hectares (3,900 acres) were covered by 108 million...

Read Article
Volcano Watch — The 1955 eruption: the first in lower Puna since 1840

Volcano Watch — The 1955 eruption: the first in lower Puna since 1840

Tomorrow, February 28, marks the 45th anniversary of the start of the 1955 eruption on Kīlauea's lower east rift zone. This was the first eruption of...

Read Article
Volcano Watch — Why is the water in `Ahalanui pond so warm?

Volcano Watch — Why is the water in `Ahalanui pond so warm?

Annual rainfall totals on the windward slopes of Mauna Loa and Kīlauea average up to nearly 10 meters (300 inches), yet there are no perennial streams...

Read Article
Volcano Watch — How high was Haleakalā?

Volcano Watch — How high was Haleakalā?

Haleakalā, the volcano that forms East Maui, had higher summit elevations in its glorious past. Today the volcano's highest point is 10,023 feet, but...

Read Article
Volcano Watch — The longest Kīlauea eruption in memory

Volcano Watch — The longest Kīlauea eruption in memory

What is the longest eruption in memory at Kīlauea? The ongoing Pu`u `O`o-Kupaianaha eruption, which entered its 18th year on January 3? The nearly...

Read Article
Volcano Watch — A sensory tour of Kīlauea's sulfur gases

Volcano Watch — A sensory tour of Kīlauea's sulfur gases

Gravy and Hostess cupcakes—both delicious in their own way, but not necessarily in combination. Although they are extremely different from each other...

Read Article
Volcano Watch — Fossils reveal birdlife of Hawai`i's past

Volcano Watch — Fossils reveal birdlife of Hawai`i's past

Strolling the desolate Mo`omomi Beach of Moloka`i's north shore some 30 years ago, a woman came upon what appeared to be the remains of a turkey...

Read Article
Volcano Watch — Mapping new lava as easy or difficult as finding the flow margin

Volcano Watch — Mapping new lava as easy or difficult as finding the flow margin

Geologists everywhere like to study rocks in the field, but few of them get to map rocks that are still molten and on the move. Here in Hawai`i, we...

Read Article
Volcano Watch — The Kapoho eruption—40 years old this week

Volcano Watch — The Kapoho eruption—40 years old this week

This Thursday, January 13, marks the 40th anniversary of the Kapoho eruption, the sequel to the Kīlauea Iki eruption in November-December 1959. It was...

Read Article
Volcano Watch — Eruption Enters the 21st Century

Volcano Watch — Eruption Enters the 21st Century

Tomorrow, January 3, marks the 17th anniversary of the ongoing Pu`u `O`o - Kupaianaha eruption. Some readers are too young to remember the eruption in...

Read Article
Volcano Watch — Programs at the USGS

Volcano Watch — Programs at the USGS

The staff and associates of the U.S. Geological Survey's Hawaiian Volcano Observatory and Kīlauea Field Station extend a warm and cheerful holiday...

Read Article
Volcano Watch — A simple question leads to a big lava flow

Volcano Watch — A simple question leads to a big lava flow

An employee of the Hilo Hawaiian hotel recently called the U.S. Geological Survey's Hawaiian Volcano Observatory and asked about the origin of Coconut...

Read Article
Volcano Watch — 'Tis the season to say goodbye to yellowjacket wasps

Volcano Watch — 'Tis the season to say goodbye to yellowjacket wasps

Last week's heavy rains on the Big Island brought an end to one of the worst seasons for yellowjacket wasps around Mauna Loa in more than a decade.
 

Read Article
Volcano Watch — Does heavy rain influence eruptions? Maybe

Volcano Watch — Does heavy rain influence eruptions? Maybe

The heavy rain that East Hawai`i experienced this week, particularly on Wednesday night and Thursday morning, suggested the topic for this week's...

Read Article
Volcano Watch — A POHA of a different sort

Volcano Watch — A POHA of a different sort

The Saddle Road to Pohakuloa Training Area (PTA) might seem noticeably more worn this month.

Read Article
Volcano Watch — Quiet in Kīlauea's caldera, eruption on the east rift zone

Volcano Watch — Quiet in Kīlauea's caldera, eruption on the east rift zone

Here's a question for you trivia aficionados. Since written records began in 1823, what is the longest period of time without an eruption in Kīlauea's...

Read Article
Volcano Watch — Kīlauea's south shore is...steep

Volcano Watch — Kīlauea's south shore is...steep

Kīlauea's south slope presents a spectacular drive by motorcar because the highway descends steeply to reach the coastal plain.

Read Article
Volcano Watch — Is Mauna Loa older or younger than Kīlauea?

Volcano Watch — Is Mauna Loa older or younger than Kīlauea?

In 1916, Thomas Jaggar, renowned scientist and founder of HVO, wrote, in a foreword to "Hawaiian Legends of Volcanoes" by Westervelt, that "Everything...

Read Article
Volcano Watch — Kīlauea's caldera: more than just a hole in the ground

Volcano Watch — Kīlauea's caldera: more than just a hole in the ground

Many visitors come to the summit of Kīlauea, take a quick look into the caldera, say, "Hmmm, that's nice," shrug their shoulders, and move on. All...

Read Article
Volcano Watch — Is the world shaking more now than before?

Volcano Watch — Is the world shaking more now than before?

For the past two months, reports of large earthquakes and the havoc they cause seem to be constantly in the news. Earthquakes in Turkey, Taiwan...

Read Article
Was this page helpful?