Image (IMAGE) University of Tsukuba Caption Foehns -- warm, dry, downslope winds descending the lee side of mountain slopes -- cause hazardous hot weather in parts of Japan. A new University of Tsukuba study presents the first comprehensive climatological analysis of Japan's south foehns on the Toyama Plain. Most foehns were caused by a dynamical mechanism and occurred while an extratropical cyclone was over the Sea of Japan, although some occurred with an anticyclone over Japan, and hazardous high-temperature foehns occurred with typhoons near Japan. Credit University of Tsukuba Usage Restrictions Unauthorized use is prohibited License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.