Volcanos

Roundup of Global Volcanic Activity – New Activity for the week of 20 June – 26 June 2018

Fernandina | Ecuador : On 21 June Parque Nacional Galápagos reported that lava flows at Fernandina were no longer reaching the ocean, though white plumes continued to rise from flows at the coastline.

Great Sitkin | Andreanof Islands (USA) : AVO reported continuing low-level unrest at Great Sitkin during 20-26 June; seismic activity remained at or near background levels. A recently analyzed satellite image acquired on 11 June, one day after short-duration explosive event was recorded, showed a minor ash deposit on the snow extending 2 km from a vent in the summit crater. The Aviation colour Code remained at Yellow and the Volcano Alert Level remained at Advisory.

Ibu | Halmahera (Indonesia) : PVMBG reported that at 0857 on 21 June an event at Ibu generated an ash plume that rose at least 600 m above the crater rim and drifted N. Signals indicating an explosion and rock avalanches were detected in seismic data. During 22-26 June ash plumes rose as high as 850 m and drifted WNW and W. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to stay at least 2 km away from the active crater, and 3.5 km away on the N side.

Kadovar | Papua New Guinea : According to the Darwin VAAC an ash plume from Kadovar identified by a pilot and in satellite images rose to an altitude of 1.8 km (6,000 ft) a.s.l. on 20 June and drifted W.

Krakatau | Indonesia : PVMBG and BNPB reported that an eruption at Anak Krakatau began on 18 June, along with increased seismicity, and reminded residents that the Alert Level remained at 2 (on a scale of 1-4); visitors were warned not to approach the volcano within 1 km of the crater. Foggy conditions hampered visual observations during 19-20 June, but on 21 June gray plumes were observed rising 100-200 m above the summit. An event at 0714 on 25 June produced a dense ash plume that rose about 1 km and drifted N.

Sierra Negra | Isla Isabela (Ecuador) : On 22 June IG reported increased seismic activity at Sierra Negra on the S end of Isabela Island; the largest event, a M 4.2, was recorded at 0624 and felt in El Cura and San Joaquín, NE of the volcano. A M 5.3 earthquake was detected at 0315 on 26 June, occurring at a depth of 5.3 km below Sierra Negra. The event was strongly felt on the upper flanks and in Puerto Villamil (23 km SE). Several aftershocks and subsequent tremor were recorded. An earthquake swarm began at 1117, characterized by events located 3-5 km depth. A M 4.2 earthquake was recorded at 1338, and followed by increasing amplitudes of seismic and infrasound signals. Parque Nacional Galápagos staff heard noises described as bellows coming from Volcán Chico fissure vent, and coupled with the seismicity and infrasound data, suggested the start of an eruption. An IG report posted 20 minutes later described a thermal anomaly identified in satellite images in the N area of the caldera, near Volcán Chico. Park staff observed lava flowing towards the crater’s interior as well as towards the N flank.

Telica | Nicaragua : INETER and SINAPRED reported that an eruption at Telica began at 0708 on 21 June. Explosions produced an ash plume that rose 500 m above the crater and drifted E, S, and SW, and ejected tephra that was deposited within a 1-km-radius of the volcano. Ashfall was reported in areas including La Joya, Las Marías (7 km NNW), Pozo Viejo (10 km NNW), Ojo de Agua, San Lucas (11 km NNW), Las Higueras, Las Grietas (12 km NNW), and Posoltega (16 km WSW).

Earthquakes

Magnitude 5+ Earthquakes – Global

5.3 earthquake hits the Island of Hawaii, Hawaii.

5.2 earthquake hits the southern mid-Atlantic ridge.

Storms and Floods

Tropical Storms – Roundup of Tropical Storms:

In the eastern Pacific Ocean: Tropical depression 06e (Emilia), located approximately 1198 nm south-southeast of San Diego, is tracking west-northwestward at 13 knots.

NewsBytes:

Greece – Heavy summer rainstorms over the past two days have caused flooding in several parts of Greece, including an area near Athens where flash floods last year caused 24 deaths. Fifteen people needed to be evacuated from flooded homes or cars late Tuesday. The flooding also forced the closure of several roads in the area. The fire brigade said 95 firefighters with 40 vehicles and a boat were helping address the situation. Flooding problems were also reported in the Halkidiki region of northern Greece, a popular tourist destination, and near Larissa in central Greece.

Global Warming

Buried Volcanic Vent Heats Up Antarctica

What lurks beneath western Antarctica’s frozen surface? Volcanic heat, according to a new study. And that extra warmth might be speeding up the disappearance of the Pine Island Glacier, the continent’s fastest-melting glacier.

Chilly Antarctica hides much under thick layers of ice, which extend for miles over its bedrock. Scientists previously found a volcanic rift system stretching under West Antarctica and into the Ross Sea, with as many as 138 volcanoes identified. However, those volcanoes have been dormant for 2,200 years, but evidence that turned up near the Pine Island Glacier pointed to recent magma activity deep underground.

Volcanoes typically announce themselves by belching smoke and gas into the air, but in Antarctica, the heat source was buried under miles of ice. However, even though the magma itself was hidden, scientists could spot its “fingerprints” in certain gases they found in seawater samples. The chemistry of melted ice running off the glacier hinted at a volcanic source upstream, warming the ice from below and accelerating melt into the Amundsen Sea.

Disease

More measles in Ukraine

According to the Center for Public Health of the Ministry of Health of Ukraine, in the 25th week of 2018, 1273 people (487 adults and 786 children) suffered from measles. Since the beginning of the year, 23,131 people – 9,327 adults and 13,804 children – have contracted measles.

Anthrax – South Dakota, USA – Update

In a follow-up on the anthrax situation in South Dakota, State Veterinarian Dr. Dustin Oedekoven says anthrax is responsible for recent death loss in a second cattle herd, this time in in Bon Homme County. Four adult cattle died suddenly last week in the herd, which had not been vaccinated against anthrax.

The comes after reports of 8 deaths in a Clark County herd.

Earthquakes

Magnitude 5+ Earthquakes – Global

5.4 earthquake hits the Molucca Sea.

5.2 earthquake hits the Mayotte region.

5.2 earthquake hits Chiapas, Mexico.

5.0 earthquake hits the Sumbawa region, Indonesia.

Storms and Floods

Tropical Storms – Roundup of Tropical Storms:

There are no current tropical storms.

NewsBytes:

Singapore – “Intense rain” caused flash floods in three locations across central and western Singapore on Tuesday morning, leaving vehicles and pedestrians to wade their way through murky waters as they made their way to work during peak hour.

Wildlife

Feral Cats Are Devouring Australia’s Reptiles

Outdoor cats are feasting on the reptiles of Australia, and conservationists are concerned about the toll their snacking habits might take on the country’s biodiversity.

Feral cats kill, on average, 1 million reptiles each day in Australia, according to a new study published today (June 25) in the journal Wildlife Research.

Feral cats (Felis catus) are those animals that used to be (or their ancestors used to be) domesticated, but who now roam in the wild. In the 18th century, the Europeans who came to Australia introduced these furry felines to the continent, bringing them along as pets, according to the study. But 230 years later, the descendants of those cats — totaling more than 2 million — are now menacing populations of lizards, turtles and snakes. [Here, Kitty, Kitty: 10 Facts for Cat Lovers]

To figure out the toll cats took on Australian reptiles, the researchers looked at more than 80 studies that included, in total, analyses of more than 10,000 samples of cat poop or stomach samples. They found that the feral cats in the studies eat 258 different kinds of Australian reptiles, including 11 threatened species such as the Christmas Island forest skink (Emoia nativitatis), the pygmy copperhead snake (Austrelaps labialis) and some turtles. They also found that the cats hunted reptiles much more in areas that were hotter and drier.

However, the actual number is likely higher. That’s because many reptiles are local to specific areas of Australia, and the researchers weren’t able to sample every region of the country. Rainforests, for example, were largely unsampled, they wrote.

Some of the cats in the studies truly indulged: For example, one cat was found to have the remains of 40 reptiles in its stomach, most of which were lined earless dragons (Tympanocryptis lineata), and another cat was found to have ingested 27 skinks, according to the study.

In total, feral cats were responsible for killing, on average, 466 million reptiles a year in Australia, most of which were native to the continent. But when the researchers also added in pet cats and cats who roam in areas where they can find food from humans (such as cities or dumps), they found that all cats in the country were responsible for killing, on average, 649 million reptiles a year.

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Environment

The Coldest Place on Earth Is Even Colder

Scientists already knew that the lowest temperatures ever measured on Earth were on a frozen ice ridge in eastern Antarctica, near the South Pole. But they recently discovered that temperatures there can drop even lower than those previously measured.

In 2013, analysis of satellite data pinpointed scattered pockets of intensely cold air on the East Antarctic Plateau between Dome Argus and Dome Fuji — temperatures that dipped to a staggering minus 135 degrees Fahrenheit (minus 93 degrees Celsius).

However, new analysis of the same data suggests that under the right conditions, those temperatures can drop to nearly minus 148 degrees F (minus 100 degrees C), which is probably the coldest it can get on Earth, researchers reported in a new study.

Wildfires

Wildfires – UK

A large wildfire has broken out on Saddleworth Moor above Manchester sending a huge plume of smoke into the air. Dozens of homes were evacuated. The heatwave that the UK is currently experiencing has created tinderbox conditions. The fire started on Sunday night and now stretches over more than a square mile of land between Dove Stone Reservoir and Buckton Vale.

Disease

Rift Valley Fever – Kenya – Update

In a follow-up on the Rift Valley fever (RVF) outbreak in Kenya, the outbreak has rapidly increased in the last week, with more cases reported and two new counties affected.

In the past two and one-half weeks, , a cumulative total of 54 cases, with 11 deaths (case fatality rate 20.4%), have been reported from three counties: Wajir (25 cases, 6 deaths), Marsabit (28 cases, 4 deaths) and Siaya (1 case, 1 death).

Earthquakes

Magnitude 5+ Earthquakes – Global

5.5 earthquake hits the central mid-Atlantic Ridge.

5.2 earthquake hits the Galapagos Islands.

5.2 earthquake hits the island of Hawaii, Hawaii.

5.1 earthquake hit the South Sandwich Islands.

5.0 earthquake hits the Mayotte region.

5.0 earthquake hits Vanuatu.

5.0 earthquake hits west of MacQuarie Island.

5.0 earthquake hits Santiago del Estero, Argentina.

Storms and Floods

Tropical Storms – Roundup of Tropical Storms:

Gl sst mm

In the Eastern Pacific Ocean: Tropical Depression 05e (Daniel), located approximately 781 nm south of San Diego, is tracking west-northwestward at 06 knots.

NewsBytes:

India – The overall flood situation in Assam showed a slight improvement on Monday with all the major rivers of the state flowing below the danger level, even as two more persons lost their lives, taking the death toll in flood related incidents to 26.A total of 96,993 people in five districts were reeling under the impact of the flood, as against 1.94 lakh people in six districts on Sunday.

Wildfires

Wildfires – Florida, USA

A fast-moving wildfire along the coast of Florida’s Panhandle has destroyed more than 30 homes, authorities said Monday. The fire broke out at about 4 p.m. ET Sunday in Eastpoint, about 60 miles southwest of Tallahassee near Apalachicola. Firefighters from Franklin County and neighboring jurisdictions used 13 bulldozers and eight fire engines to beat back the blaze, which by midnight had burned into Tate’s Hell State Forest.