Impacts of Phased-Array Radar Data on Forecaster Performance during Severe Hail and Wind Events

AbstractThe ongoing Phased Array Radar Innovative Sensing Experiment (PARISE) investigates the impacts of higher-temporal-resolution radar data on the warning decision process of NWS forecasters. Twelve NWS forecasters participated in the 2013 PARISE and were assigned to either a control (5-min updates) or an experimental (1-min updates) group. Participants worked two case studies in simulated real time. The first case presented a marginally severe hail event, and the second case presented a severe hail and wind event. While working each event, participants made decisions regarding the detection, identification, and reidentification of severe weather. These three levels compose what has now been termed the compound warning decision process. Decisions were verified with respect to the three levels of the compound warning decision process and the experimental group obtained a lower mean false alarm ratio than the control group throughout both cases. The experimental group also obtained a higher mean probabi...

[1]  T. R. Stewart,et al.  Effects of improved information on the components of skill in weather forecasting , 1992 .

[2]  William R. Moninger,et al.  The Weather Information and Skill Experiment (WISE): The Effect of Varying Levels of Information on Forecast Skill , 1993 .

[3]  Rita D. Roberts,et al.  A Proposed Microburst Nowcasting Procedure Using Single-Doppler Radar , 1989 .

[4]  C. O'Reilly.  Individuals and Information Overload in Organizations: Is More Necessarily Better? , 1980 .

[5]  James E. Bruno,et al.  Using Testing to Provide Feedback to Support Instruction: A Reexamination of the Role of Assessment in Educational Organizations , 1993 .

[6]  W. Briggs.  Statistical Methods in the Atmospheric Sciences , 2007 .

[7]  Charles A. Doswell,et al.  Climatology of Nontornadic Severe Thunderstorm Events in the United States , 1985 .

[8]  N A Obuchowski,et al.  Data analysis for detection and localization of multiple abnormalities with application to mammography. , 2000, Academic radiology.

[9]  T. T. Fujita,et al.  Microbursts in JAWS depicted by Doppler radars, PAM, and aerial photographs , 1983 .

[10]  Daphne LaDue,et al.  Strengths and Limitations of Current Radar Systems for Two Stakeholder Groups in the Southern Plains , 2010 .

[11]  Daphne LaDue,et al.  Exploring Impacts of Rapid-Scan Radar Data on NWS Warning Decisions , 2012 .

[12]  Kevin A. Scharfenberg,et al.  THE SEVERE HAZARDS ANALYSIS AND VERIFICATION EXPERIMENT , 2009 .

[13]  Michael J. Istok.  NEXRAD Product Improvement—Update 2009 , 2009 .

[14]  Matthew Duncan,et al.  A signal detection model of compound decision tasks , 2006 .

[15]  Travis M. Smith,et al.  Rapid Sampling of Severe Storms by the National Weather Radar Testbed Phased Array Radar , 2008 .

[16]  Roger M. Wakimoto,et al.  Wet Microburst Activity over the Southeastern United States: Implications for Forecasting , 1991 .

[17]  P. Heinselman.  Supercell Storm Evolution Observed by Forecasters Using PAR Data , 2013 .

[18]  Ray A. Wolf,et al.  Buyer Beware: Some Words of Caution on the Use of Severe Wind Reports in Postevent Assessment and Research , 2006 .

[19]  Elizabeth M. Quoetone,et al.  Warning Decision Making: The Relative Roles of Conceptual Models, Technology, Strategy, and Forecaster Expertise on 3 May 1999 , 2002 .

[20]  S. G. Bigler,et al.  History of Operational Use of Weather Radar by U.S. Weather Services. Part II: Development of Operational Doppler Weather Radars , 1998 .

[21]  R. Vogt,et al.  Agile-Beam Phased Array Radar for Weather Observations , 2007 .

[22]  Arthur Witt,et al.  Evaluating the Performance of WSR-88D Severe Storm Detection Algorithms , 1998 .

[23]  Douglas E. Forsyth,et al.  The National Weather Radar Testbed (Phased-Array) , 2005 .

[24]  David Mazursky,et al.  Experience and Expertise in Complex Decision Making , 1986 .

[25]  Sebastián M. Torres,et al.  High-Temporal-Resolution Capabilities of the National Weather Radar Testbed Phased-Array Radar , 2011 .