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Very shallow M6.6 earthquake hits Ogasawara region, Japan
A very shallow earthquake registered by the JMA as M6.6 hit Japanese Ogasawara Archipelago at 18:22 UTC (03:22 JST) on August 16, 2018. The USGS is reporting M6.4 at a depth of 11.5 km (7.1 miles) at 18:21 and M6.0 at 18:22 UTC. EMSC is reporting M6.4 and M5.9 at a depth of 10 km (6.2 miles). According to the USGS, the epicenter was located 251 km (156 miles) SE of Iwo Jima, 420.9 km (261.5 miles) SSW of Ogasawara, Japan and 945.4 km (587.5 miles) NNW of Saipan, Northen Mariana Islands. There are no people living within 100 km (62 miles). Although there may be slight sea-level changes in coastal regions, this earthquake has caused no damage to Japan, JMA said. The closest volcanoes are Minami-Hiyoshi and Nikko, both submarine. They have located roughly 100 km (62 miles) W of the epicenter. Periodic water discoloration and water-spouting have been reported over Minami-Hiyoshi since 1975 when detonations and an explosion were als…

Snow covers northern Algeria's desert for the second winter in a row

Snow covers northern Algeria's desert for the second winter in a row

Snow has covered northern Algeria's desert around the city of Ain Sefra for the second winter in a row on January 7, 2018. The last time this region saw snow before December 2016 was in 2013. 
The snowfall in northern Algeria was caused by the same weather system that affected the western Mediterranean over the past couple of days, as is usually the case.
Ain Sefra (Aïn Séfra) is a town and municipality in western Algeria. The region it is located in is known as "The Gateway to the Desert." It is situated in the Saharan Atlas Mountains, 45 km (28 miles) east of the border with Morocco. The town lies in a broad valley between Mount Aïssa and Mount Mekter. 
Suomi NPP image acquired January 7, 2018
NASA/NOAA Suomi NPP/VIIRS image acquired January 7, 2018
Snow in this region is rare, but not unprecedented. However, what is unusual is that this is the second winter in a row that Ain Sefra saw measurable snow.
Images below were taken on December 19, 2016:
Snow in Ain Sefra, Algeria on December 19, 2016
Snow in Aïn Séfra, Algeria on December 19, 2016. Photo by Karim Bouchetata
Snow in Ain Sefra, Algeria on December 19, 2016
Snow in Aïn Séfra, Algeria on December 19, 2016. Photo by Karim Bouchetata
One date circulating in media this week, the same as in December 2016 when the last snow was reported in the region, is February 18, 1979. On that day, snow was indeed reported in Algeria, but to the surprise of many, it happened in the country's south, far away from Ain Sefra.
As reported by Live Science, on February 18, 1979, low altitude areas of the Sahara desert recorded their first snowfall in living memory. Snow fell in spots in southern Algeria, where a half-hour snowstorm stopped traffic. Several Saharan mountain ranges, however, receive snow on a more regular basis.
In winter, temperatures drop low enough on the Tahat summit, the highest mountain peak in Algeria, to cause snow about every three years. The Tibesti Mountains, in northern Chad, receive snow on peaks over 2.5 km (8 202 feet) once every seven years on average. 
Featured image: Snow in Ain Sefra, northern Algeria on January 7, 2018. Credit: Karim Bouchetata

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