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

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

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

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

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

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

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

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)

The U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.0 earthquake beneath the Island of Hawaiʻi 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

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

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?

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

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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