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The April 26, 1991, Tornado Outbreak: A Case Study

In-depth discussion of the tornado outbreak that wreaked havoc in the central/southern Plains, particularly Oklahoma and Kansas, on April 26, 1991. The event spawned multiple violent tornadoes, including the infamous F5 that tore through Andover, KS, and an F4 with winds measured to be in excess of 270 mph near Red Rock, OK. In this video, we'll take a deep dive into the meteorology behind the event to determine why this was such a prolific outbreak. Thumbnail images from Duke Evans via the Wichita Eagle (top) and Doug Speheger via NWS Norman (bottom). --------------------------------------------------------- Chapters: 0:00 Introduction 4:07 Meteorological discussion 13:37 Observed sounding analysis 23:05 Radar analysis 29:05 Wrap-up --------------------------------------------------------- Resources: NWS Norman event page: https://www.weather.gov/oun/events-19... NWS Tulsa event page: https://noaa.maps.arcgis.com/apps/Map... NWS Wichita event page: https://www.weather.gov/ict/AndoverEn... Bluestein et al. (1993): "Doppler Radar Wind Spectra of Supercell Tornadoes" - https://journals.ametsoc.org/view/jou... Tornado Archive: https://tornadoarchive.com/home/ SPC Violent Tornado Webpage: https://www.spc.noaa.gov/exper/outbre...