Many seismologists consider the Tangshan earthquakes to have not been predicted, even "famously unpredicted", and that it was not predictable due to a lack of precursory anomalous phenomena.
The Chinese Communist party's Central Committee also broadcast a statement that the quake "caused great losses to people's life and property".
This "occurred on a near vertical right-lateral strike-slip fault, striking N40°E", the block on the southeast side sliding about three meters to the southwest.
The cloudier part of the year begins around February 20 and lasts for 6.
Such disruptions could be serious: a false alarm in October, 1976, issued by the provincial government, is estimated to have disrupted the lives of 65% of the population of that province for half a year.
Propaganda also tried to persuade local units not to ask for government assistance, while at the same time praising the Communist Party for providing generous relief aid to the victims.
The new Prime Minister Hua Guofeng toured the disasters sites using this as an opportunity to consolidate his position against his political enemies in the Party leadership.
The cloudiest month of the year in Tangshan is June, during which on average the sky is overcast or mostly cloudy 41% of the time.