Terribly sorry to hear this news and my thoughts are with those affected. Early measurements indicate the quake was between 6.8 and 7.0 on the Richter Scale, so at least ten times bigger than the 5.9 quake that destroyed Agadir in 1960, with more than 30 times the energy release.
The large loss of life (15,000 dead) in Agadir was due to the collapse of very basic housing constructed on softer ground. Building techniques have improved in the 60 years since then, nevertheless the death toll from yesterday's quake is already at 820 and looks likely to exceed 1,000.
Al Hoceima on the Mediterranean coast has also suffered major Richter 6.0+ earthquakes, in 1994 and again in 2004. Since then smaller quakes have been happening on a fairly regular basis in the Alboran Sea off the coast of Al Hoceima—with
three minor quakes in the last 24 hours—but this is regarded as positive as these small shifts allow pressures to be released gently,
And I remember there was a 4.4 quake in Zaouiat Ahansal in the Ait Bougmez valley twelve years back.
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Earlier this morning the Ministry of the Interior updated the death toll to 820, almost half of which (394) are in the province of Al Haouz which was the epicentre of the quake. Al Haouz province lies to the immediate south of Marrakech and stretches from Amizmiz in the west, through the Test pass, Moulay Brahim, Imlil, Oukaimden, Ourika and the Tichka pass in the east.
271 deaths have been reported in the province of Taroudant, 91 in the province of Chichaoua (west of Marrakech), 31 in the province of Ouarzazate, 13 in the prefecture of Marrakech, 11 in the province of Azilal, 5 in the prefecture of Agadir, 3 in Greater Casablanca and 1 death in the province of Youssoufia (north of Marrakech).