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contributor authorKuster, Charles M.
contributor authorHeinselman, Pamela L.
contributor authorAustin, Marcus
date accessioned2017-06-09T17:36:51Z
date available2017-06-09T17:36:51Z
date copyright2015/08/01
date issued2015
identifier issn0882-8156
identifier otherams-88090.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4231831
description abstractn 31 May 2013, a supercell produced a tornado rated as 3 on the enhanced Fujita scale (EF3) near El Reno, Oklahoma, which was sampled by the S-band phased-array radar (PAR) at the National Weather Radar Testbed in Norman, Oklahoma. Collaboration with the forecaster who issued tornado warnings for the El Reno supercell during real-time operations focused the analysis on critical radar signatures frequently assessed during warning operations. The wealth of real-world experience provided by the forecaster, along with the quantitative analysis, highlighted differences between rapid-scan PAR data and the Weather Surveillance Radar-1988 Doppler located near Oklahoma City, Oklahoma (KTLX), within the context of forecast challenges faced on 31 May 2013. The comparison revealed that the 70-s PAR data proved most advantageous to the forecaster?s situational awareness in instances of rapid storm organization, sudden mesocyclone intensification, and abrupt, short-term changes in tornado motion. Situations where PAR data were most advantageous in the depiction of storm-scale processes included 1) rapid variations in mesocyclone intensity and associated changes in inflow magnitude; 2) imminent radar-indicated development of the short-lived (EF0) Calumet, Oklahoma, and long-lived (EF3) El Reno tornadoes; and 3) precise location and motion of the tornado circulation. As a result, it is surmised that rapid-scan volumetric radar data in cases like this would augment a forecaster?s ability to observe rapidly evolving storm features and deliver timely, life-saving information to the general public.
publisherAmerican Meteorological Society
title31 May 2013 El Reno Tornadoes: Advantages of Rapid-Scan Phased-Array Radar Data from a Warning Forecaster’s Perspective
typeJournal Paper
journal volume30
journal issue4
journal titleWeather and Forecasting
identifier doi10.1175/WAF-D-14-00142.1
journal fristpage933
journal lastpage956
treeWeather and Forecasting:;2015:;volume( 030 ):;issue: 004
contenttypeFulltext


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