Tag Archive | "mauna loa"

Aerial view of Mauna Loa erupting on the morning of March 25, 1984, the first day of the volcano’s most recent eruption. The lava flow was advancing southeast, toward Kīlauea, from fissure vents at an elevation of about 11,200 feet on Mauna Loa’s Northeast Rift Zone. Moku‘āweoweo, Mauna Loa’s summit caldera, is visible at top left. USGS photo by J.P. Lockwood.

Volcano Watch: Mauna Loa update: unrest continues, but the outcome is uncertain

Posted on 2:12 pm, Thursday, September 14, 2017. Tags: , , ,

What’s up with Mauna Loa, and is any change in sight? Should residents relax or stay vigilant?

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Volcano Watch: New map reveals geologic history of Mauna Loa Volcano’s northeast flank

Posted on 12:08 pm, Thursday, July 13, 2017. Tags: , , ,

The new “Geologic map of the northeast flank of Mauna Loa volcano, Island of Hawaiʻi,” is the culmination of many years of work by Hawaiian Volcano Observatory (HVO) geologists.

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Wish you were here? A white Christmas on Hawaii’s snow-capped summits

Posted on 7:35 pm, Saturday, December 31, 2016. Tags: , , , ,

Nearly every year, the peaks of Mauna Kea and Mauna Loa volcanoes are temporarily dusted with snow.

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A view from the United Kingdom Infrared Telescope Saturday, December 12, 2016. Image courtesy of University of Arizona/UKIRT

Winter Storm Warning extended for Hawaii Island summits

Posted on 10:58 am, Saturday, December 10, 2016. Tags: , ,

The National Weather Service in Honolulu has extended a Winter Storm Warning for Hawaii Island summits through 6 a.m. Sunday (Dec 11).

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Wish you were here? Snow days in Hawaii

Posted on 10:58 am, Friday, December 9, 2016. Tags: , , , , , , ,

A look back at the week of Winter weather on Hawaii’s summits of Mauna Kea and Mauna Loa through videos.

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Winter Weather Advisory for Hawaii Island summits

Posted on 11:20 pm, Tuesday, December 6, 2016. Tags: , , , ,

The National Weather Service in Honolulu has issued a Winter Weather Advisory in effect from 6 p.m. Wednesday until 6 a.m. Friday (Dec 8) for Hawaii Island summits above 12,000 feet.

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Volcano Watch: Jaggar’s prediction comes true—the 1935 eruption of Mauna Loa

Posted on 4:15 pm, Thursday, September 8, 2016. Tags: , , ,

After working for 20 years building the Hawaiian Volcano Observatory (HVO), Thomas Jaggar had achieved almost everything he set out to do.

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Magnitude 4.0 quake at Mauna Loa summit Tuesday (Sept 6)

Posted on 11:39 am, Tuesday, September 6, 2016. Tags: , , ,

The U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.0 earthquake beneath the Island of HawaiÊ»i on Tuesday, September 6, 2016, at 4:25 a.m., HST.

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Light 4.3M quake on western flank of Mauna Loa near Keauhou, no tsunami expected

Posted on 9:33 pm, Friday, July 22, 2016. Tags: ,

As of 10:30 p.m., one small aftershock was recorded. During the past 30 years, there have been 3 earthquakes, including tonight’s event, with magnitudes greater than 4.0 and at depths of 5–15 km (3–9 mi) in the Kealakekua area of West Hawaiʻi.

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This rapidly moving ʻaʻā lava flow was one of several that advanced down the west flank of Mauna Loa during the volcano’s 1950 eruption. The massive flow, tens of meters (yards) high, traveled from the Southwest Rift Zone vent to the ocean, a distance of about 18 km (11 mi), in around 18 hours. Two earlier flows from this eruption reached the ocean in as little as three hours. All three flows crossed Highway 11 as they advanced to the sea. In this black-and-white aerial photo, incandescently hot areas on the flow appear white. Photo credit: Air National Guard, 199th Fighter Squadron.

Volcano Watch: Mauna Loa Southwest Rift Zone’s eruptions stopped traffic—and more

Posted on 4:15 pm, Thursday, June 9, 2016. Tags: , , ,

During the past 148 years, Mauna Loa Southwest Rift Zone eruptions have sent massive lava flows across Hawai‘i Island’s main road six times: in 1868, 1887, 1907, 1919, 1926, and 1950.

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Volcano Watch: Where (and how) you gonna go when the volcano flows?

Posted on 4:17 pm, Thursday, June 2, 2016. Tags: , , , ,

Island of Hawaiʻi residents, especially those living in South Kona and Ka‘ū Districts, which are at particular risk from Mauna Loa’s Southwest Rift Zone, might wonder where they’re gonna go when the volcano erupts.

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A USGS Hawaiian Volcano Observatory chemist conducts thermal imaging measurements as part of a geochemical survey on Mauna Loa's upper Southwest Rift Zone in March 2016. Areas like the one shown here can indicate where gases are escaping from magma at depth. USGS photo.

Volcano Watch: Scientists search for the right “keys” to Mauna Loa

Posted on 2:44 pm, Thursday, May 19, 2016. Tags: , ,

In September 2015, the USGS/HVO raised the Volcano Alert Level for Mauna Loa from “normal” to “advisory” because of increased activity beneath the mountain’s summit caldera and upper Southwest Rift Zone.

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During the Mauna Loa 1950 eruption, three large, fast-moving lava flows advanced down the west flank of the volcano, each crossing the main highway before reaching the ocean. The Ka‘apuna flow, shown here, traveled from the Southwest Rift Zone vent (7,800 ft elevation) to the coast in just 17 hours, creating a huge steam plume as lava flowed into the sea. The glowing edges and fast-moving channels of the 10- to 25-ft thick ‘a‘ā flow appear white in this June 2, 1950, aerial image. Photo courtesy of Air National Guard, 199th Fighter Squadron.

Volcano Watch: Mauna Loa 1950 eruption – A lot of lava with little warning

Posted on 6:15 pm, Thursday, April 7, 2016. Tags: , ,

Mauna Loa, the largest active volcano on Earth, is not erupting, but is stirring. Seismicity remains elevated above long-term background levels, and ground deformation indicates continued inflation of a magma reservoir beneath the volcano.

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One of the new tools deployed by the USGS Hawaiian Volcano Observatory to better monitor the current unrest on Mauna Loa is a webcam focused on the volcano’s Southwest Rift Zone, which has been the site of eruptions in 1903, 1916, 1919, 1926, and 1950. Webcam images of Mauna Loa’s summit, Northeast Rift, and Southwest Rift (like the one shown here from the morning of February 24, 2016), can be viewed on HVO’s website at http://hvo.wr.usgs.gov/cams/ USGS image.

Volcano Watch: Mauna Loa – Earth’s largest active volcano is still stirring

Posted on 2:44 pm, Thursday, February 25, 2016. Tags: , , ,

Time-lapse multi-image movie of Mokuʻāweoweo Caldera from the Northwest Rim on Mauna Loa. February 18-25, 2016. Images courtesy of USGS/HVO (Volcano Watch is a weekly article written by scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory.) Despite not being in the headlines, Mauna Loa continues to be in a state of unrest based on […]

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