US Tornado Outbreak Climatologies Based on Different Definitions of "Outbreak," 1975–2014

2020 ◽  
Vol 60 (1) ◽  
pp. 6-22
Author(s):  
Rebecca V. Foglietti ◽  
Tyler J. Mitchell ◽  
Jason T. Ortegren
Keyword(s):  
Tornado Outbreak

scholarly journals Adolescent Substance Use Following a Deadly U.S. Tornado Outbreak: A Population-Based Study of 2,000 Families

2015 ◽  
Vol 46 (5) ◽  
pp. 732-745 ◽  
Author(s):  
Carla Kmett Danielson ◽  
Jennifer A. Sumner ◽  
Zachary W. Adams ◽  
Jenna L. McCauley ◽  
Matthew Carpenter ◽  
...  
Keyword(s):  
Substance Use ◽  
Population Based ◽  
Adolescent Substance Use ◽  
Population Based Study ◽  
Adolescent Substance ◽  
Tornado Outbreak

scholarly journals An observational study of the 7 September 2005 Barcelona tornado outbreak

2007 ◽  
Vol 7 (1) ◽  
pp. 129-139 ◽  
Author(s):  
J. Bech ◽  
R. Pascual ◽  
T. Rigo ◽  
N. Pineda ◽  
J. M. López ◽  
...  
Keyword(s):  
Observational Study ◽  
Large Scale ◽  
Radar Images ◽  
Site Survey ◽  
Convergence Line ◽  
Upper Level ◽  
Llobregat Delta ◽  
Ne Spain ◽  
Extensive Damage ◽  
Tornado Outbreak

Abstract. This paper presents an observational study of the tornado outbreak that took place on the 7 September 2005 in the Llobregat delta river, affecting a densely populated and urbanised area and the Barcelona International airport (NE Spain). The site survey confirmed at least five short-lived tornadoes. Four of them were weak (F0, F1) and the other one was significant (F2 on the Fujita scale). They started mostly as waterspouts and moved later inland causing extensive damage estimated in 9 million Euros, three injured people but fortunately no fatalities. Large scale forcing was provided by upper level diffluence and low level warm air advection. Satellite and weather radar images revealed the development of the cells that spawned the waterspouts along a mesoscale convergence line in a highly sheared and relatively low buoyant environment. Further analysis indicated characteristics that could be attributed indistinctively to non-supercell or to mini-supercell thunderstorms.

scholarly journals Investigation of Goyang Tornado Outbreak Using X-band Polarimetric Radar: 10 June 2014

Atmosphere ◽  
2016 ◽  
Vol 26 (1) ◽  
pp. 47-58
Author(s):  
Jong-Hoon Jeong ◽  
Yeon-Hee Kim ◽  
Su-Bin Oh ◽  
Eunha Lim ◽  
Sangwon Joo
Keyword(s):  
Polarimetric Radar ◽  
X Band ◽  
Tornado Outbreak

scholarly journals Synoptic Composites of Tornadic and Nontornadic Outbreaks

2012 ◽  
Vol 140 (8) ◽  
pp. 2590-2608 ◽  
Author(s):  
Andrew E. Mercer ◽  
Chad M. Shafer ◽  
Charles A. Doswell ◽  
Lance M. Leslie ◽  
Michael B. Richman
Keyword(s):  
Principal Component ◽  
The United States ◽  
Weather Research And Forecasting ◽  
Forecasting Model ◽  
Synoptic Scale ◽  
Wind Fields ◽  
Pressure System ◽  
Low Pressure System ◽  
Different Characteristics ◽  
Tornado Outbreak

Abstract Tornadic and nontornadic outbreaks occur within the United States and elsewhere around the world each year with devastating effect. However, few studies have considered the physical differences between these two outbreak types. To address this issue, synoptic-scale pattern composites of tornadic and nontornadic outbreaks are formulated over North America using a rotated principal component analysis (RPCA). A cluster analysis of the RPC loadings group similar outbreak events, and the resulting map types represent an idealized composite of the constituent cases in each cluster. These composites are used to initialize a Weather Research and Forecasting Model (WRF) simulation of each hypothetical composite outbreak type in an effort to determine the WRF’s capability to distinguish the outbreak type each composite represents. Synoptic-scale pattern analyses of the composites reveal strikingly different characteristics within each outbreak type, particularly in the wind fields. The tornado outbreak composites reveal a strong low- and midlevel cyclone over the eastern Rockies, which is likely responsible for the observed surface low pressure system in the plains. Composite soundings from the hypothetical outbreak centroids reveal significantly greater bulk shear and storm-relative environmental helicity values in the tornado outbreak environment, whereas instability fields are similar between the two outbreak types. The WRF simulations of the map types confirm results observed in the composite soundings.

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