The Guatemala1976earthquake struck on February 4, 1976. It was a 7.5 Mw earthquake, centered about 160 km northeast of Guatemala City. Cities throughout the country suffered damage, and most adobe type structures in the outlying areas of Guatemala City were completely destroyed, leaving thousands homeless. Some of the areas went without electricity and communication for days. The main shock was been followed by thousands of aftershocks, some of the larger ones causing additional loss of life and damage. February 4 is the 35th day of the year in the Gregorian calendar. ... 1976 (MCMLXXVI) was a leap year starting on Thursday. ... The moment magnitude scale was introduced in 1979 by Tom Hanks and Hiroo Kanamori as a successor to the Richter scale and is used by seismologists to compare the energy released by earthquakes. ... 1976 (MCMLXXVI) was a leap year starting on Thursday. ... An earthquake is the result from the sudden release of stored energy in the Earths crust that creates seismic waves. ... February 4 is the 35th day of the year in the Gregorian calendar. ... The moment magnitude scale was introduced in 1979 by Tom Hanks and Hiroo Kanamori as a successor to the Richter scale and is used by seismologists to compare the energy released by earthquakes. ... Guatemala City (in full, La Nueva Guatemala de la Asunción; locally known as Guatemala or Guate) is the capital and largest city of the nation of Guatemala. ... Renewal of the surface coating of an adobe wall in Chamisal, New Mexico Adobe is a natural building material composed of sand, sandy clay and straw or other organic materials, which is shaped into bricks using wooden frames and dried in the sun. ... A homeless man pushes a cart down the street. ... Lightning strikes during a night-time thunderstorm. ... Aftershocks are earthquakes in the same region of the mainshock (generally within a few rupture length) but of smaller magnitude and which occur with a pattern that follows Omoris law. ...