1985 Mexico City earthquake Ground shaking lasted more than five minutes in places along the coast and parts of Mexico City shook for three minutes, with an average shaking time of 3–4 minutes. It is estimated the movement along the fault was about three meters. The main tremor was foreshadowed by a quake of magnitude 5.2 on 28 May 1985, and was followed by two significant aftershocks: one on 20 September 1985 of magnitude 7.5 lasting thirteen seconds and the third occurring seven months later on 30 April 1986 with magnitude 7.0 lasting ten seconds. However, at least twelve other minor aftershocks were associated
1986–87 FIS Alpine Ski World Cup deduction, which are given in (). see complete table In Women's Combined World Cup 1986/87 only one competition was held. Points were only awarded to athletes, who were able to finish in both events (downhill and slalom) in top thirty. 1986–87 FIS Alpine Ski World Cup The 21st World Cup season began in August 1986 in Argentina for men, resumed in late November, and concluded in March 1987 in Sarajevo. The overall champions were Pirmin Zurbriggen and Maria Walliser, both of Switzerland, who each won for the second time. Two-time women's overall World Cup champion Erika Hess of Switzerland retired