Authorities issue red alert for US volcano due to impending explosions

The sight of the disastrous new volcanic eruption of La Palma in the Canary Islands grabs the attention of viewers around the world, as it unfolds, a volcano closer to the residential area in the United States erupts with new activity , forcing officials to raise a RED alert level.

(Photo: Getty Images)

Volcanic eruption

According to the Alaska Volcano Observatory (AVO), ash from the Semisopochnoi eruption, which is still ongoing, has increased in both frequency and intensity.

In addition, satellite imagery reveals an ash cloud at an altitude of about 15,000 feet above sea level extending about 60 miles to the southeast until 5:00 am.

AVO cautions: “Explosions were observed throughout the day and an increase in sulfur dioxide emissions was observed in satellite data this afternoon. These observations represent an increase in eruptive activity. and the Aviation Color Code and Volcanic Alert Level are increased to RED / WARNING. “

Based on its position on the globe at 179 ° 46 ′ East, Semisopochnoi is the easternmost land location in North America and the United States, located approximately 9.7 miles west of the 180th Meridian of Alaska.

Semisopochnoi is part of the Aleutian Islands, a connection of about 14 large volcanic islands and smaller islands of which there are about 55. These islands and their 57 volcanoes form the northernmost part of the Pacific Ring of Fire. .

Read also: Even minor volcanic eruptions could ‘lead to global catastrophe’, new study finds

Alaska Volcanoes Observatory (AVO)

An area around the edge of the Pacific Ocean where most volcanic eruptions and earthquakes occur is called the Ring of fire.

This event is usually caused by plate tectonics. The lithospheric plates below and the surrounding Pacific Ocean propel, collide, and be damaged, causing the seismic activity for which the Ring of Fire is known.

The Alaska Volcano Observatory (AVO) monitors volcanoes in this part of the Ring of Fire. AVO is a joint program of the Geophysical Institute of the University of Alaska Fairbanks (UAFGI), the Division of Geological and Geophysical Studies of the State of Alaska (ADGGS) and the US Geological Survey (USGS ).

The AVO is almost the same as the Hawaii Volcanoes Observatory (HVO) which is responsible for monitoring Hawaii’s three active volcanoes: Mauna Loa, Kilauea, and Hualalai.

Lava stream

(Photo: Getty Images)

Aviation Codes

It is also the responsibility of the AVO to issue volcanic activity alert levels and aviation codes. Yellow, orange, green and red are the aviation codes.

It is simply “unassigned” whenever there is insufficient ground instrumentation to decide that a volcano is at a normal background activity level. While green signifies normal activity related to a non-eruptive state, when a volcano shows signs of increased unrest above known background levels, the code turns yellow.

When a volcano shows increased or rapidly increasing unrest with a strong possibility of erupting, it turns orange.

Finally, the code turns red when an eruption is imminent with a remarkable release of volcanic ash anticipated into the atmosphere or an eruption is in progress with a significant release of volcanic ash into the atmosphere.

Associated article: Experts warn of ‘explosions and toxic gases’ if lava from Canary Islands volcanic eruption reaches Atlantic Ocean

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