Central America VOlcanic Eruptions

New eruptions at Costa Rica’s Turrialba and Guatemala’s Fuego

New eruptions at Costa Rica's Turrialba and Guatemala's Fuego

A new eruption of Costa Rica’s Turrialba volcano took place at 03:37 UTC on June 25 (22:15 on June 24, local time). Dense fog is preventing estimation of volcanic cloud height. At the same time, volcanic ash produced by the fresh eruption of Guatemala’s Fuego volcano is reaching 4.9 km (16 000 feet) above sea level.

Tremors under Turrialba started increasing at 02:05 UTC and reached maximum at 02:40 UTC. This seismicity was accompanied by the occasional passive emission of ash. At the time, the direction of the wind was WNW.

A strong smell of sulfur was reported in Escazú (San Jose) and San Isidro De Heredia (Heredia), OVISICORI reported.

At 03:37 UTC (21:37 local time), the tremors further increased, RSN said. They were accompanied by the constant emission of ash. This time, winds direction was SW, Dr. Mauricio M. Mora said.

At the time of the RSN’s last report (05:00 UTC), ash was still coming out of the volcano.

This thermal image was recorded between 03:35 UTC and 03:51 UTC on June 25:

Meanwhile, Guatemala’s Fuego volcano is also erupting. At 04:45 UTC on June 25, volcanic ash cloud was near 4.9 km (16 000 feet) above sea level, the Washington VAAC reported. INSIVUMEH reported movement toward the WSW-SW, extending roughly 18.5 km (11.5 miles) from the summit.

Volcanic ash is seen in multi-spectral imagery, but it is difficult to see its complete view.

In a special bulletin issued at 04:40 UTC (22:40 local time), INSIVUMEH said the activity at the volcano is increasing. “Over the last 22 hours, Fuego volcano observatory reported increased number of explosions, constant rumblings, and strong shock waves. The seismic station FG3 recorded increased tremor and constant explosions.”

Two lava flows were observed on the southeast flank flowing into Las Lajas and El Jute drainages. They were about 2 km (1.2 miles) in length.

“At the time, this eruption is effusive in nature, however, there is a chance it could increase in the coming hours, with the possibility of pyroclastic flows, mainly on the southeast and southern flank,” INSIVUMEH said.

Geological summary


Turrialba, the easternmost of Costa Rica’s Holocene volcanoes, is a large vegetated basaltic-to-dacitic stratovolcano located across a broad saddle NE of Irazú volcano overlooking the city of Cartago. The massive 3340-m-high Turrialba is exceeded in height only by Irazú, covers an area of 500 sq km, and is one of Costa Rica’s most voluminous volcanoes.

Three well-defined craters occur at the upper SW end of a broad 800 x 2200 m summit depression that is breached to the NE. Most activity originated from the summit vent complex, but two pyroclastic cones are located on the SW flank. Five major explosive eruptions have occurred during the past 3500 years. A series of explosive eruptions during the 19th century were sometimes accompanied by pyroclastic flows. Fumarolic activity continues at the central and SW summit craters. (GVP)


Volcán Fuego, one of Central America’s most active volcanoes, is one of three large stratovolcanoes overlooking Guatemala’s former capital, Antigua. The scarp of an older edifice, Meseta, lies between 3 763 m (12 345.8 feet high Fuego and its twin volcano to the north, Acatenango. Construction of Meseta dates back to about 230 000 years and continued until the late Pleistocene or early Holocene. The collapse of Meseta may have produced the massive Escuintla debris-avalanche deposit, which extends about 50 km (31 miles) onto the Pacific coastal plain.

The growth of the modern Fuego volcano followed, continuing the southward migration of volcanism that began at Acatenango. In contrast to the mostly andesitic Acatenango, eruptions at Fuego have become more mafic with time, and most historical activity has produced basaltic rocks. Frequent vigorous historical eruptions have been recorded since the onset of the Spanish era in 1524 ,and have produced major ashfalls, along with occasional pyroclastic flows and lava flows. (GVP)

Featured image credit: RSN

from:    http://thewatchers.adorraeli.com/2016/06/25/new-eruptions-at-costa-rica-turrialba-and-guatemala-fuego-volcano/

Earthquake – Panama/Costa Rica Border

Strong moderately dangerous earthquake near the Panama / Costa Rica border area

Last update: May 27, 2013 at 4:43 pm by By

Update 16:38 UTC : After searching our many sources we are happy to report that NO damage or injuries have been reported by local press or authorities. If you have signs of the contrary, please let us know by filling in a comment or IHFI report. Thank you.
The most logical reason for a possible harmless outcome will be the depth as reported by Ovsicori Costa Rica (35 km).

Update 11:07 UTC : Ovsicori Costa Rica is reporting a Magnitude of M6 BUT at a depth of 35 km. this depth makes the earthquake still moderately dangerous but less dangerous than the initial USGS data.

Update 10:54 UTC : Most shaking exposed villages / cities in the epicenter area :
MMI VI (strong shaking) : Guabito 6,000 inhabitants, Changuinola 23,000 and Sixaola 2,000
MMI V (Moderate shaking)  : Barranco 1,000 and Almirante 8,000

Screen Shot 2013-05-27 at 12.54.41

Update 10:15 UTC : Falling objects and telephone problems in Costa Rica (nothing abnormal !!). Power outtage in Perez Zeledon

Update 10:09 UTC : The main reason why this earthquake is more dangerous than normal Costa Rica Pacific earthquakes is that the fault type is different (transform vs subduction). Transform faults are more dangerous. The area around town Guabito might be the most dangerous. Many villages, soft soil and probably not the most resistant buildings.
In the direct vicinity of the epicenter are mainly rocky hills and not many villages, but the village of Prucsco is located in a softer soil valley.

A strong earthquake occurred in the middle of the Costa Rica / Panama night at a shallow depth of 12 km (preliminary value). It was well felt in both countries.
This earthquake maybe dangerous as it was strong and shallow.
The earthquake happened on the Atlantic Coast, a rather unusual location for such strong earthquakes.
Earthquake-Report.com calls this earthquake Moderately Dangerous for injuries and damage.
The MMI VII shaking which is expected by the USGS calculations is confirming our expectations.

Screen Shot 2013-05-27 at 11.59.48

12km (7mi) SSW of Guabito, Panama
15km (9mi) WSW of Changuinola, Panama
68km (42mi) N of Volcan, Panama
79km (49mi) SSE of Puerto Limon, Costa Rica
168km (104mi) ESE of San Jose, Costa Rica

Most important Earthquake Data:

Magnitude : 5.7

Local Time (conversion only below land) : 2013-05-27 04:41:15

GMT/UTC Time : 2013-05-27 09:41:15

from:    http://earthquake-report.com/2013/05/27/strong-earthquake-panama-costa-rica-border-region-on-may-27-2013/

Costa Rica Earthquake

Very strong earthquake in Costa Rica

Last update: October 24, 2012 at 4:39 pm by By

Very strong earthquake in Costa Rica
A magnitude 6.6 earthquake at a depth of 35km (USGS) struck the same area where the M7.6 hit a month ago. The values given by USGS differs a lot from the ones that gives Ovsicori, the geological survey from Costa Rica, saying it was a magnitude 5.8 at a depth of 6km. We’ll wait to see if they change their values.
There are reports of fallen objects and broken windows in the zone of La Cruz, Guanacaste and Sámara but, luckily, there’s no heavy damage or injured people.
Update- USGS lowered the magnitude from 6.6 to 6.5 but at a more dangerous depth of 20km.
Some areas in San Ramon in Alajuela and Guanacaste were without electricity.

from:    http://earthquake-report.com/2012/10/23/major-earthquakes-list-october-24-2012/

Costa Rica Dangerous Earthquake — Tsunami Risk

Massive earthquake in Costa Rica

Last update: September 5, 2012 at 3:08 pm by By

Massive earthquake in Coasta Rica
A M7.8 earthquake just occurred below the coastal area of Costa Rica
Based on the current parameters this earthquake can be called EXTREMELY DANGEROUS for everybody living in a radius of 40 km around the epicenter.
Earthquake data coming in are varying from very strong (M6.4) up to massive (M7.9)
Same goes for the depth of the earthquake, from 20 km (extremely dangerous) to 40 km (still dangerous at the max. magnitude).
We will have to wait until recalculated numbers are coming in.
The earthquake occurred on top of the North American plate which is subdected by an oceanic plate. Powerful earthquakes in the area are mostly very deep and less dangerous.

from:    http://earthquake-report.com/2012/09/04/major-earthquakes-list-september-5-2012/

Costa Rica Earthquake

Strong and moderately dangerous earthquake in Costa Rica – initial M 6.1 decreased to M 5.8

Last update: February 13, 2012 at 7:07 pm by By 

Earthquake overview : A powerful earthquake struck the coastal Costa Rica area at 04:55 in the morning. The epicenter has been located at 76 km from San Jose.

Most important Earthquake Data:
Magnitude : 6.1 5.8  (Ovsicori Costa Rica : 5.9)
UTC Time : Monday, February 13, 2012 at 10:55:12 UTC
Local time at epicenter : Monday, February 13, 2012 at 04:55:12 AM at epicenter
Depth (Hypocenter) : 33.6 km 27.9 km ( (Ovsicori Costa Rica : 14 km)
Geo-location(s) :
75 km (50 miles) S (175°) from SAN JOSE, Costa Rica
137 km (85 miles) SW (233°) from Limon, Costa Rica
193 km (120 miles) W (268°) from Bocas del Toro, Panama

Update 18:56 UTC : It was felt strongly, however damage and injuries have not yet been registered. Falling objects as stated before have occurred on the coast. If any people have registered damage, please let us know. The aftershocks have not caused major damage as yet.

Update 16:44 UTC :  10 aftershocks have been reported by Ovsicori since the mainshock 5 hours ago.  All these aftershocks were below M 4, making them harmless for houses and people.

Shaking map as calculated by USGS

Update 16:03 UTC :  Until now we have found no signs of damage or injuries(but still too soon to be certain). A lot of people are reporting however “fallen objects” in various parts of the country.

Update 15:53 UTC :  USGS has decreased the magnitude after recalculation to Mw 5.8. The depth has been updated to 27.9 km.

Update 15:51 UTC :  A video report from Telenoticias7, one of the main networks with a very good earthquake report. Those among you who do not understand Spanish, have to go directly to 06:30 minutes. The video shows the shaking in the television studios. The shaking confirms the many I Have Felt It reports that we have received from all over Costa Rica. Telenoticias7 is also mentioning (like one of our readers below) that the country has felt various small quakes since Saturday.  Saturday’s earthquake measured M 4.5.  On Sunday 3 smaller aftershocks were noticed. Today’s earthquake occurred in the same area than the 4 other ones and can be called a stronger aftershock than the mainshock.

Update 15:32 UTC :  OVISCORI, the local Costa Rican seismological agency, has reported a magnitude of 5.9. The depth of the hypocenter was located at 14 km. Epicenter in the Pacific Ocean at 34 km to the South West of Estero Garita. Oviscori also reported a max. intensity of VI MMI (strong shaking), a little less than USGS initially reported.

Update 12:12 UTC :  From James Daniells CATDAT database : The area had over 40 damaging earthquakes historically in the last 100 years within 100km, the 1910 earthquakes caused over 1000 fatalities. Based on previous losses there will probably be no fatalities, but minor damage should be expected.

Update 12:09 UTC :  As could have been expected if earthquakes like this occur, the shaking has also been felt in many neighboring countries.

Update 11:44 UTC :  The locations that may experience a moderate shaking are : Quepos, Parrita, San Isidro, Daniel Flores, Mercedes

Update 11:40 UTC : Following the initial calculations of USGS, the earthquake will have been felt by 785 people as a very strong shaking, 149,000 people will have felt a moderate shaking and 4,094,000 people will have been shaken slightly.

Update : We expect NO tsunami danger from this earthquake. the specialized agencies have not created alert messages.

Update : This earthquake occurred in the highly populated region of Puntarenas in Costa Rica, also visited by many tourists.

Update :  The nearest populated places are: Dominical (16km), Guapil (14km), Bar? (18km), Hatillo (12km), Laguna (16km), Salitral (15km), Palma Quemada (11km), Platanillo (11km), Matapalo (10km), Tierras Morenas (18km), Dos Bocas (15km), Dos Boscas (15km), Portal?n (12km), Paso (12km), Pasito (13km), Savegre (13km), Llorona (19km), Guabos (17km), Finca Negro (19km), S?balo (19km). The closest civilian airport is Nuevo Palmar Sur (67km).

Update : the epicenter is located at only a few km from the coast

The depth of this earthquake is shallow enough to create serious problems in the epicenter area.

from:    http://earthquake-report.com/2012/02/13/very-strong-and-dangerous-earthquake-in-costa-rica/


Turrialba Volcano, Costa Rica

Volcanic activity on the rise at Costa Rica’s Turrialba Volcano

Published on August 20, 2011 10:05 am PT
– By Dave Tole – Writer
– Article Editor and Approved – Warren Miller

No larger map

(TheWeatherSpace.com) — Experts are tracking a 100 year dormant volcano in Costa Rica and are investigating new happenings.

The Turrialba Volcano has been dormant for over 100 years but temperatures are rising and plumes of gas are now visible at the top.

The volcano records an average of 100 microquakes a day. The gas is affecting nearby crops and farms.

Experts continue to monitor the volcano,


Costa Rica Earthquake

Costa Rica earthquake : numerous landslides and considerable damage

Last update: July 13, 2011 at 2:58 pm

By Armand Vervaeck and James Daniell

Earthquake overview : A strong earthquake occurred in the early afternoon in the border area of Costa Rica – Nicaragua and close to the Miravalles Volcano. Although the hypocenter was at an intermediate depth, people in the epicenter area have sustained some minor damage.

Damage inflicted after the July 12 2011 Costa Rica earthquakes.

UPDATE 13/07 – 14:54 UTC : A number of houses have been labeled inhabitable by the Costa Rican emergency services.

UPDATE 13/07 – 14:31 UTC : Just after the earthquake, villagers living near the Río Guacalito at Armenias de Upala were surprised that the river was suddenly dry! Villagers believe that a dam was created on the slopes of of the Miravalles volcanowhich dried up the river.

UPDATE 13/07 – 09:46 UTC : Due to various signs of damage and traumatized people we haveupgraded this earthquake to the CatDat Orangecategory.

to read more, go to: http://earthquake-report.com/2011/07/13/costa-rica-m56-causes-minor-damage/