Mistral (wind) of mistral is weaker in the east of Provence and the Côte d'Azur. The mistral is not always synonymous with clear skies. When a low pressure front over the Mediterranean approaches the coast from the southeast, the weather can change quickly for the worse, and the mistral and its clear sky changes rapidly to an east wind bringing humid air and threatening clouds. The position of the low-pressure front creates a flow of air from the northwest or the northeast, channeled through the Rhône Valley. If this low-pressure area moves back toward the southeast, the mistral will quickly clear the
Illinois Zephyr and Carl Sandburg train." The "Carl Sandburg" was added as a second daily round trip in 2006. During fiscal year 2015, both the "Illinois Zephyr" and "Carl Sandburg" carried a combined 208,961 passengers, a 2.8% decrease over fiscal year 2014. The two trains had a total revenue of $5,287,029 in fiscal year 2015, a 4.2% decrease over fiscal year 2014. The "Illinois Zephyr" is a descendant of the "Kansas City Zephyr" and "American Royal Zephyr" passenger train routes operated by the Chicago, Burlington and Quincy Railroad from 1953 until 1968 and 1971, respectively. The state of Illinois intervened in 1971 at the request