Earthquakes

Magnitude 5+ Earthquakes – Global

5.7 earthquake hits the South Sandwich Islands.

5.2 earthquake hits Easter Island.

5.2 earthquake hits the Banda Sea.

5.0 earthquake hits Easter Island.

5.0 earthquake hits the mid-Indian Ridge.

Storms and Floods

Tropical Storms – Roundup of Tropical Storms:

Gl sst mm

In the Western Pacific Ocean: Tropical Storm 14w (Wukong), located approximately 580 nm east of Misawa, Japan, is tracking north-northwestward at 14 knots.

Tropical Storm (td) 15w (Jongdari), located approximately 158 nm southwest of Iwo To, Japan, is tracking northeastward at 08 knots.

In the Eastern Pacific Ocean: Invest 91E is an area of disturbed weather in the eastern Pacific that has the potential for further tropical development.

In the Central Pacific Ocean: Invest 92L is an area of disturbed weather in the central Pacific that has the potential for further tropical development.

Invest 93L is an area of disturbed weather in the central Pacific that has the potential for further tropical development.

NewsBytes:

Georgia, Caucasus – On 5 July 2018, due to heavy rain, melting of snow and glacier in the upper part of the river Nenskra basin, a part of the mountain Khokrili (Samegrelo Zemo Svaneti Region, Georgia) collapsed, blocking the Nenskra River bed. As a result, accumulated water flooded the Nenskra valley villages. In total 1,143 people (323 families) live in Chuberi community villages. All of them were affected by the flooding.

USA – Millions of Americans on the East Coast were bracing Tuesday for more heavy rain and the risk of flash flooding — some of it “life-threatening” — as states in the West struggled with another day of record-setting heat. At least two people died Monday amid strong downpours pummeling states in the mid-Atlantic and Northeast, which turned low-lying roads into lakes and saturated the ground.

Cameroon – Local media in Cameroon are reporting of floods in parts of the country. On Tuesday, the city of Limbe in the country’s South West was hit by floods. While in Douala, the country’s largest city and economic capital located in the Littoral region, heavy rains accompanied by landslides are said to have left scores stranded. Floods continue to cause havoc across parts of Africa where high rain patterns have resulted in loss of lives and destruction to properties. The most recent was in the capital of Ivory Coast, Abidjan where government was forced to evacuate close to 200 families.

Volcanos

Roundup of Global Volcanic Activity – New Activity for the week of 18 July – 24 July 2018

Asamayama | Honshu (Japan) : JMA stated that during 16-23 July white plumes rose as high as 300 m above Asamayama’s summit crater. Weak crater incandescence was visible for the first time since 23 December 2017. The Alert Level remained at 2 (on a scale of 1-5).

Etna | Sicily (Italy) : INGV reported that during 16-22 July gas plumes rose from Etna’s summit crater; low-energy Strombolian activity also occurred from three vents at the bottom of Northeast Crater (NEC) and from two vents in Bocca Nuova. The activity was mostly confined to the craters, with material falling back into the craters, though occasionally incandescent lava was ejected about 100 m above the crater rim. The activity sometimes generated ash emissions that dissipated near the summit.

Krakatau | Indonesia : Based on satellite and wind model data, the Darwin VAAC reported that during 18-20 July ash plumes from Anak Krakatau rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted NE, E, SW, and W. The Alert Level remained at 2 (on a scale of 1-4); residents and visitors were warned not to approach the volcano within 1 km of the crater.

Nishinoshima | Japan : Based on Japan Coast Guard (JCG) observations, JMA reported that a very small eruption at Nishinoshima occurred at 1124 on 12 July, producing a brownish plume that rose from near the crater. During an aerial survey, JCG noted deposits 400 m from the vent. No thermal anomalies were detected. The report warned people to stay at least 500 m away from the crater.

Semeru | Eastern Java (Indonesia) : Based on analysis of satellite images, the Darwin VAAC reported that on 20 July a minor eruption at Semeru generated an ash plume that rose to an altitude of 4.9 km (16,000 ft) a.s.l. and drifted SW.

Sierra Negra | Isla Isabela (Ecuador) : IG reported that the eruption at Sierra Negra continued through 23 July, and continued to vary in intensity. Four fissures had initially opened on 26 June, at the start of the eruption. Fissure 1 is 4 km long and located at the edge of the caldera in the area of Volcán Chico. Lava flows from this fissure traveled 7 km down the flanks, and 1.7 km within the interior of the caldera, covering an area of 16.1 square kilometers. Fissure 2 is about 250 m long, located NW of the caldera, and produced lava flows that traveled 3 km and covered an area of 2.3 square kilometers. Fissure 3, located W of the caldera, is 250 m long and produced lava flows that descended the flanks 2 km, covering an area of 0.3 square kilometers. Fissures 1-3 were active until 27 June. Fissure 4, 250 m long and located on the NW flank, continued to be active. Lava from this fissure reached the ocean between 9 and 10 July, and by 16 July had covered an area of 11.6 square kilometers (30.4 square kilometers was covered by lava from all four fissures).

Villarrica | Chile : POVI reported that sometime during mid-morning on 18 July webcam images captured two vapor-and-gas emissions with some ash rising from Villarrica. Between 1100 and 1200 that same day a thermal anomaly (the largest since December 2017) was identified in satellite images. Crater incandescence was visible later that day. An earthquake, possibly a volcano-tectonic signal, was detected at about 0627 on 20 July, a few hours after gas-and-steam emissions decreased. Crater incandescence was visible on 23 July.

Disease

Ebola virus disease – Democratic Republic of the Congo

As 42 days (two incubation periods) have passed since the last possible exposure to a confirmed Ebola virus disease case, on 24 July 2018, the Minister of Health, Dr Oly Ilunga announced the end of the outbreak in the Democratic Republic of the Congo.