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Earthquakes and unrest at Lake Managua in April 2014

On 10 and 11 April, two shallow, strong magnitude 6.1 and 6.7 quakes occurred near the volcanoes Momotombo (NW shore of Lake Managua) and Apoyeque (Chiltepe Pensinsula north of the capital Managua), followed by hundreds of aftershocks.
 
Earthquakes at Lake Managua during 10-19 April 2014
Earthquakes at Lake Managua during 10-19 April 2014
Earthquakes near Apoyeque volcano on 18 April
Earthquakes near Apoyeque volcano on 18 April
Regression at Lake Managua - sign of possible inflation
INETER reported that the shore of Lake Managua retreated in some areas close to the epicenters of the recent earthquakes. Residents from the area
Xiloá-Apoyeque, located about 2 km east of Comarca el Marañonal (at km 17 on the Xiloá highway) observed that the beach retreated for 16 meters on a strech of 500 m length.
This regression corresponds to a drop in lake level by 40 cm, but could also be a result of uplift of this area by the same amount. The latter seems a more plausible explanation, given that it appears that the lake shore only regressed in this area.
Changes in air and water temperature were also reported felt by residents, INETER wrote.
If the regression of the lake is in fact caused by uplift, it could (but not necessarily must) have been caused by tectonic movements as a result of the recent earthquakes and/or an intrusion of magma at depth. 
Possible relationship between earthquakes and volcanoes
Experts are now trying to examine the possible relationship between the earthquakes and volcanoes as well as the observed fluctuations and other anomalies at Lake Managua.
North of Momotombo, steep cracks in the field were found, in the area of the epicenter of the first earthquake INETER director Wilfried Strauch said in a TV interview.
Country at red alert
While the country as a whole is at highest alert as the risk of new earthquakes is considered elevated,
and people are advised to sleep outside, INETER (for now) does not think that an eruption of Momotombo and Apoyeque volcanoes could be imminent or be triggered in a near future.

As of 19 April, seismic activity has continued to show a gradual decrease as aftershocks from the 10 and 11 April quakes become less and less frequent.
 

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