![]() ![]() They are most common during the spring across the central United States when moderate-to-strong atmospheric wind fields, vertical wind shear (change in wind direction and/or speed with height), and instability are present. Supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes. Our Standards: The Thomson Reuters Trust Principles.Structure and Dynamics of Supercell Thunderstorms ![]() (Reporting by Collin Eaton Additional reporting and writing by Gabriella Borter Editing by Nick Zieminski) The Mississippi River crested on Friday night in New Orleans at just under 17 feet (5.18 meters), the National Weather Service said, much lower than a prediction earlier this week of 20 feet (6.1 meters), near the height of the city's levees. The rain was expected to raise the already flooded Mississippi River but not overtop the levees. Up to 15 inches of rain were still expected in some parts of south-central Louisiana on Sunday, the Weather Service said. ![]() Streets in the city's popular garden district were quieter than usual but some joggers and dogwalkers ventured out, according to a Reuters witness. New Orleans saw light rain on Sunday morning, and churches and several businesses were open, including some on Tchoupitoulas Street along the flooded Mississippi River. NEW ORLEANS, July 14 (Reuters) - Tropical Storm Barry trudged through northwestern Louisiana on Sunday, threatening tornadoes and dropping up to 15 inches of rain in some places to create life-threatening flood conditions along the Mississippi River.īarry, which made landfall as a category 1 hurricane on Saturday then quickly weakened to a tropical storm, was 50 miles (85 km) south-southeast of Shreveport with maximum sustained winds of 40 miles (65 km) per hour on Sunday morning.įears that Barry might devastate the low-lying city of New Orleans like Hurricane Katrina did in 2005 were unfounded, but rain in the forecast could still cause life-threatening flooding, the National Weather Service said. Up to 15 inches of rain were still expected in some parts of south-central Louisiana on Sunday, the Weather Service said ![]()
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