The National Secretariat for Risk Management said yellow alert remains in surrounding communities of Tungurahua volcano in Ecuador.
On April 27, 2013 two small earthquakes associated with fracturing of rocks within the volcano (volcano-tectonic earthquakes) were recorded. According to a preliminary assessment, these volcano-tectonic earthquakes started a new increase in seismic activity at the volcano Tungurahua surface.
Seismic signal from Tungurahua (RETU station, IG) on April 29 ,2013
On April 27, 2013 an emission occurred and reached 2 km in height with a load of medium to low ash. Throughout the day the volcano continued producing short pulses of vapor emissions, which eventually had a moderate to low ash content. During this episode there was only one report of ash fall during the morning in the area of Juive Grande. Since April 27, 2013 more than 70 signals of long period events have been recorded, and 13 tremor emission periods, marking a clear shift to the values obtained in the previous days, where on average there were 12 earthquakes per day.
Steam and ash emission from Tungurahua on April 27, 2013.(left) and on April 28, 2013 (right) (Source: C. Viracucha – OVT / IGEPN)
Early on April 28, 2013 an explosion created a column of steam with average content of ash that rose about 4 km above the crater, then decreased and remained more or less sustained at 2.5 km height above the crater for 30 minutes. The column began scattering on all sides of the volcano, and drifted W and SW for more than 100 km and caused light ash falls in areas close and around the volcano, in Banos, Chacauco, Bilbao, Cusúa, Juive Grande, Pondoa and Pillate.
Later on April 28, 2013 several explosions happened, the largest of which created shock waves and a thunderous roar, ejected huge blocks and created an eruption column that rose 3.5 km above the crater.
Graphs show ash emission at altitude of 5023 m (Source: VAAC Washington)
Featured image: Steam and ash emission on April 27, 2013. (Credit: C. Viracucha – OVT / IGEPN)
It doesn't quite fit in a night sky guide, but this month might also be called "Rosetta's" month. After years of traveling through the solar system and finally reaching comet 67P/Churyumov–Gerasimenko in August 2014, ESA will attempt humanity'
Tropical depression in the western North Pacific Ocean developed into Tropical Storm Nuri on October 31, 2014. At 09:00 UTC on October 31, 2014, Nuri had maximum sustained winds near 55 km/h (34 mph). It was centered about 391 km (243 miles) north-northwest of Yap. The
The depression over northeast Arabian Sea moved northeastwards and weakened into a well-marked low pressure area over northeast Arabian Sea early on October 31, 2014. Moderate rainfall, squally winds and moderate to rough sea surge along and off Gujarat coast are
Region 2192, the largest sunspot of the current solar cycle - Solar Cycle 24 (SC24) - has now started its farside rotation and will be remembered by ~137 solar flares (C-, M- and X-class) without any noteworthy Coronal Mass Ejection (CME). Though we covered all signific
According to scientists from NASA and NOAA, the Antarctic ozone hole reached its annual peak on September 11 with the size of 24.1 million square kilometers (93 million square miles). Overall, the 2014 ozone hole is smaller than the large holes of the 1998–2006 pe
Good news for residents of coastal areas near Pakistan/India border. Once a Category 4 Cyclone "Nilofar" has rapidly weakened in northern Arabian Sea as approaching north Gujarat coast becoming tropical depression before making landfall. By 09:00 UTC on
Costa Rica's Turrialba volcano experienced a relatively large eruption starting 05:10 UTC on October 30, 2014 (23:10 local time on October 29). The eruption lasted about 25 minutes and ended with a large explosion. The volcano rumbled back to life in 2010 after 144
New activity/unrest was observed at 6 volcanoes from October 22 - 28, 2014. Ongoing activity was reported for 10 volcanoes.New activity/unrest: Chiles-Cerro Negro, Colombia-Ecuador | Copahue, Central Chile-Argentina border | Kilauea, Hawaiian Islands (USA) | Mayon, L
More than 300 people are missing after days of heavy monsoon rain caused a landslide that buried 150 houses in south-central Sri Lanka village of Haldummulla on Wednesday morning, October 29, 2014. The houses affected were in an area of hilly ridges particularly vulnera
Tropical Cyclone "Nilofar" in Arabian Sea has likely reached its peak intensity. It is currently the equivalent of a Category 3 hurricane with maximum sustained winds of 185 km/h (115 mph) with gusts up to 232 km/h (145 mph).The system is moving northward at
According to a new study by Kobe University earth scientists, Japan could be nearly destroyed by a massive volcanic eruption over the next century. The experts said they analyzed the scale and frequency of volcanic eruptions in the archipelago nation over the past 120
Salt-spoiled soils worldwide: 20% of all irrigated lands — an area equal to size of France. Extensive costs include $27 billion+ in lost crop value/year. UNU study identifies ways to reverse damage, says every hectare needed to feed world’s fast-growing popu
Hawaiian Kīlauea continues to erupt at its summit and within the East Rift Zone with elevated gas emissions. Currently, the June 27th lava flow is advancing northeast between Apa`a St/Cemetery Rd and Pāhoa Village Road. As of 02:30 UTC today (16:30 local time on Octo
After spinning just south south of Hawaii on October 17, producing high waves along some shorelines and prompting flood advisories what was left of Tropical Storm "Ana" hit British Columbia, Canada on Monday, October 27, 2014.Consequently, southeast winds were
A strong earthquake measuring M6.1 on the Richter scale was registered in Tonga region on October 28, 2014 at 03:15 UTC (15:15 local time). USGS reports depth of 35 km (21.7 miles). Geoscience Australia preliminary report mentions M6.0 quake.Epicenter was located 129 km
Tropical Cyclone "Nilofar" continues to intensify in Arabian Sea and is now a Category 2 storm with a maximum sustained wind speed of 168 km/h (105 mph) with gusts up to 204 km/h (127 mph). It is currently moving north-northwestward at speed of 11 km/h (7
Region 2192, now located near the southwest limb, unleashed its sixth X-class solar flare since it became fully apparent on the solar disk on October 18, 2014. The latest in series of its major eruptions is X2.0 solar flare on October 27. This latest event started at 14
Brazil’s Public Ministry acknowledged that the Sao Paulo water supply might only last another 100 days as drought conditions continue. The city with more than 20 million people is suffering its worst drought in at least 80 years. The most intense drought
Hawaiian Volcano Observatory (HVO) reports that the June 27th lava flow remains active and has moved downslope at a higher rate in the past few days (240 m, or 260 yd, per day). The flow front crossed Apa‘a Street at approximately 13:50 UTC on Saturday, October 25
The largest and most interesting active region of the current solar cycle - Region 2192 ('beta-gamma-delta") - erupted on October 26, 2014 with its fifth X-class solar flare since it rotated into Earth view. The event started at 10:04, peaked at 10:56 as X2.0 a
What is a neutron star? Astronomers tell us that these tiny yet massively dense objects form by gravitational collapse from the remnants of a massive star that has exploded. The theoretical neutron star was invented to try to explain highly intense bursts of energy from
Low pressure area (Invest 90A) over the Arabian Sea has become better organized and developed into Tropical Cyclone "Nilofar". The system has the potential to strengthen to the equivalent of a Category 1 hurricane before its Arabian Peninsula landfall.METEOSAT
The largest sunspot region of Solar Cycle 24 - Region 2192 ('beta-gamma-delta') unleashed its fourth X-class solar flare since it rotated onto the Earth side of the Sun on October 25, 2014. The event lasted more than 1 hour. It started at 16:55, peaked at 17:08
September in Europe started with the remnants of Hurricane "Cristobal", and there were several heavy rain episodes during the month - in Nuremburg, Germany on September 7, in Austria on September 12 and in Sweden on September 21 and 22.Southern France suffered
The largest region of the current solar cycle erupted with a major solar flare reaching X3.1 on October 24, 2014 at 21:41 UTC. The event started at 21:07 and ended at 22:13 UTC.A narrow CME was associated with the flare and was observed in SOHO LASCO C2 imagery beginnin
Following a week of relatively low activity, Japanese Sakurajima volcano (Showa crater/Aira caldera) has become more active again during the past days. A particularly strong vulcanian explosion occurred this morning (October 24) and produced an ash plume that rose up to
A moderately strong and impulsive solar flare measuring M4.0 at its peak time erupted from huge central region on the Sun on October 24, 2014 at 07:48 UTC. The event started at 07:37 and ended at 07:52 UTC.A Type II (664 km/s) and IV radio emission were associated with
Cerro Negro de Mayasquer volcanic complex located at the Ecuador-Colombia border is experiencing increased volcanic unrest and inflation. Authorities raised the alert level to Orange (3/4) and ordered thousands to evacuate amid fears that the recent activity under the
New activity/unrest was observed at 9 volcanoes from October 15 - 21, 2014. Ongoing activity was reported also for 9 volcanoes.New activity/unrest: Cerro Negro de Mayasquer, Colombia-Ecuador | Copahue, Central Chile-Argentina border | Etna, Sicily (Italy) | Karangetang
A major solar flare measuring X1.6 at its peak time erupted from Region 2192 on October 22, 2014. The event started at 14:02, peaked at 14:28 and ended at 14:50 UTC.R3 - Strong radio blackout produced significant HF signal fading on the sunlit side of Earth. There are a
The final eclipse event of 2014 occurs at the Moon's ascending node in southern Virgo on Thursday, October 23, 2014. This will be a partial solar eclipse almost exclusively visible from Canada and the USA. Except for the far northeast, a sunset eclipse will be visib
Remnants of Hurricane "Gonzalo", the first Category 4 Atlantic hurricane since Ophelia in 2011, reached United Kingdom on October 21, 2014, with strong winds of up to 123 km/h (77 mph). One person has died as the tail end of Gonzalo hit land causing
A strong solar flare measuring M8.7 erupted from Region 2192 (beta-gamma-delta) at 01:59 UTC on October 22, 2014. The event started at 01:16 and ended at 02:28.A 10cm Radio Burst (1min / 590 sfu) was associated with the event. A 10cm radio burst indicates that the elec
Seismic activity at Iceland's Bardarbunga volcano is still high, the eruption at Holuhraun continues and the Aviation Colour Code for the volcano remains at ‘Orange’. The European Geosciences Union (EGU) warned this morning that strong jet stream could t
Comet Siding Spring hurtled past Mars at about 56 km/s only 139 000 km away from its surface at 18:27 UTC on October 19, 2014. The period when dust from the comet was most likely to reach Mars and the orbits of spacecraft around Mars peaked about 100 minutes later. Acco