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Front Range Tropical Cyclone Workshop

Research institutions along the Front Range of Colorado have a long, rich history of advancing tropical cyclone research and applications. Despite the proximity, researchers across these multiple Colorado institutions found that they often only interacted at professional meetings. To address this issue, researchers started an informal workshop back in January 2008 between students, postdoctoral fellows, research scientists, and faculty from

  • The NOAA Center for Satellite Applications and Research,
  • The Cooperative Institute for Research in the Atmosphere,
  • The National Center for Atmospheric Research,
  • The Colorado State University Department of Atmospheric Science,
  • The NOAA Earth System Research Laboratories,
  • The University of Colorado at Boulder, and others.

Over the years, this workshop has allowed Colorado researchers to present innovative ideas and receive feedback thanks to longer speaking slots than at most meetings and multiple breaks to spur discussion. Today, the workshop, now called Front Range Tropical Cyclone Workshop, continues this tradition, and convenes a one-day, annual meeting. Workshop hosting alternates between Colorado State University in Fort Collins and the National Center for Atmospheric Research in Boulder.

  • Current Organizer: Chris Slocum, NOAA/NESDIS/STAR, 2014–Present
  • Past Organizer: John Knaff, NOAA/NESDIS/STAR, 2008–2013

Past Workshops

18 July 2024 – Fort Collins
Presenter NameAffiliationPresentation Title
Alexander MitchellU AlbanyAtmospheric Dynamics Governing the Recurvature of Eastern North Pacific Tropical Cyclones
Angelie Nieves JiménezCSU/ATSExtreme Rainfall and Intensification Mechanisms in Hurricane Fiona (2022)
Dave SchecterNWRATwo Types of Transitions to Relatively Fast Spinup in Tropical Cyclone Simulations with Weak to Moderate Environmental Vertical Wind Shear
Galina ChirokovaCSU/CIRAWhat can we learn about TCs from the microwave temperature retrievals?
Guo LinNOAA/OAR/AOMLUncrewed Aircraft Observations of Turbulent Characteristics in the Low-Level Eye and Eyewall of Intense Hurricane Ian (2022)
Joesph CioneNOAA/OAR/AOMLNOAA’s 2024 Plans to Use Emerging Technology In Tropical Cyclones
John KnaffNOAA/NESDIS/STARA simple model for predicting tropical cyclone minimum central pressure from intensity and size
Kathy HaynesCSU/CIRASynthetic Passive Microwave
Lance BosartU AlbanyMultiple “Flavors” of Tropical Cyclone Interactions with Middle Latitude Baroclinic Troughs Over the North Atlantic Ocean in September 2023
Michael BellCSU/ATSIn-situ Microphysical Observations of the Tropical Cyclone Mixed-Phase Region
Taiga TsukadaCSU/CIRAWind Distribution in the Eye of Tropical Cyclone Revealed by a Novel Atmospheric Motion Vector Derivation
A list of presenters from the 18 July 2024 Front Range Tropical Cyclone Workshop hosted by the Colorado State University in Fort Collins, CO.
25 October 2023 – Boulder
Presenter NameAffiliationPresentation Title
Alex DesRosiersCSU/ATSTropical Cyclone Surface Wind Reduction Using a Neural Network
Ben TrabingNCAR/UCARRMW Forecasting at NHC / Evaluation of HAFS
Chris Rozoff NCAR/UCARLarge-eddy simulations of the tropical cyclone boundary layer at landfall in an idealized urban environment
Chris SlocumNOAA/NESDIS/STARBarotropic instability during eyewall replacement
Galina ChirokovaCSU/CIRAEstimating tropical and extratropical storm intensity and structure from JPSS microwave temperature retrievals – current and future products
Joe CioneNOAA/OAR/AOMLsUAS operations in hurricanes since 2022
John KnaffNOAA/NESDIS/STARUsing satellite derived motion winds to improve monitoring and forecasting of tropical cyclones
Jonathan VighNCAR/UCARFLIGHT-RT and VDM-RT: Real-time Data Streams of Flight-level Data
Mark DeMariaCSU/CIRAEvaluation of tropical cyclone track and intensity forecasts in the FourCastNet weather prediction model
Robert NystromNCAR/UCARThe intrinsic predictability of subseasonal TC activity
Stefano AlessandriniNCAR/UCARAn overview about the analog ensemble applications to tropical cyclones
A list of presenters from the 25 October 2023 Front Range Tropical Cyclone Workshop hosted by the National Center for Atmospheric Research in Boulder, CO.
4 October 2022 – Fort Collins
Presenter NameAffiliationPresentation Title
Alan BrammerCSU/CIRAOn the Development of a Hybrid Statistical-Ensemble TC Genesis Probability Model
Alex DesRosiersCSU/ATSThe Relationship between Observed Tropical Cyclone Vortex Height, Intensity, and Intensification
Andrea SchumacherCSU/CIRAA new database of mainland U.S. hurricane evacuation orders
Ben TrabingCSU/CIRALarge-Scale Influences on Tropical Cyclone Lightning
Chibueze Nnamdi OguejioforNCAR/UCARTropical Cyclone Rapid Intensification: Influence of multiscale anomalies in Sea Surface Temperature
David SchecterNWRADistinct Intensification Pathways for Tropical Cyclone-Like Vortices with Asymmetric Convection
Ellie CasasCSU/ATSDifferences in Intensification Rates Resulting from Variable Idealized TC Structure and Intensity
Jonathan VighNCAR/UCARAn ensemble-based statistical model for the prediction of rapid intensification at extended lead-times in tropical cyclones
Joseph CioneNOAA/OAR/AOMLNEOTAC and/or TC sUAS operations
Marie McGrawCSU/CIRAMachine Learning Forecasting of Tropical Cyclone Rapid Intensification
Mark DeMariaCSU/CIRADiagnosing Tropical Cyclone Vortex Depth from Storm Motion
Tyler BarberoCSU/ATSPPVI diagnosis of track errors in the GFS, IFS and GFDL SHiELD models in the 2017 North Atlantic hurricane season
A list of presenters from the 4 October 2022 Front Range Tropical Cyclone Workshop hosted by Colorado State University in Fort Collins, CO.
28 November 2018 – Fort Collins
Presenter NameAffiliationPresentation Title
Ben TrabingCSU/ATSUnderstanding rapid intensity changes in official hurricane intensity forecast error distributions
Chris RozoffNCAR/UCARMachine learning techniques for tropical cyclone rapid intensification prediction
Chris SlocumCIRAUsing a greenhouse parameter to understand moisture errors around tropical cyclones
Christian AppendiniUNAMWill Patricia like hurricanes become usual by the end of the century?
David SchecterNWRATropical cyclone instability theory
Falko JudtNCAR/UCARTropical cyclones in global convection-permitting NWP simulations
Jen DeHartCSU/ATSPolarimetric radar observations of Harvey and Florence
John KnaffNOAA/NESDIS/STARToward routine estimation of the radius of maximum wind – the last piece of the structure puzzle
Jonathan MartinezCSU/ATSExploring the combined effects of initial vortex size and environmental humidity on tropical cyclone size evolution
Jonathan VighNCAR/UCAROverview of research developments in tropical cyclone intensity change: Internal influences (2014–2018)
Kate MusgraveCIRAExploring SPICE model errors
Louis RivoireCSU/ATSTemperature tendencies in the UTLS above tropical cyclones
Mike FiorinoCIRESTC forecast metrics – real v fake track error
Ya-Chien FengCSU/ATSMicrophysical structure of Hurricane Harvey’s (2017) asymmetric eyewall
A list of presenters from the 28 November 2018 Front Range Tropical Cyclone Workshop hosted by Colorado State University in Fort Collins, CO.
8 March 2018 – Boulder
Presenter NameAffiliationPresentation Title
Chelsea NamCSU/ATSMulti-Scale Shear Impacts During the Genesis of Typhoon Hagupit (2008)
Chris DavisNCAR/UCARResolving Tropical Cyclone Intensity in Models
Chris RozoffNCAR/UCARProbabilistic Prediction of Tropical Cyclones with an Analog Ensemble
Chris SlocumCIRASome dynamical aspects of eyewall interaction
Ellie DelapCSU/ATSA Simplified Approach to Understanding Boundary Layer Structure Impacts on Tropical Cyclone Intensity
Falko JudtNCAR/UCARThe Extreme Intensification and Predictability of 2015’s Hurricane Patricia
George BryanNCAR/UCARUnique observations in Hurricane Maria from the Coyote UAS
John KnaffNOAA/NESDIS/STAR10-year GOES climatology of cold lows, the TC antithesis
John PersingNPSBoundary-layer Spin-up Mechanisms Investigated with Sawyer-Eliassen Balanced Model
Jonathan VighNCAR/UCARExploring the Upper Bound of Tropical Cyclone Intensification
Kate MusgraveCIRAPreliminary examination of H-GPROF in tropical cyclones
Mike FiorinoCIRESPreliminary examination of H-GPROF in tropical cyclones
Naufal RazinCSU/ATSThe Unconventional Eyewall Replacement Cycle of Hurricane Ophelia (2005)
Rosimar Rios-BerriosNCAR/UCARA Hypothesis for the Intensification of Tropical Cyclones under Moderate Vertical Wind Shear
Ting-Yu ChaCSU/ATSA Hypothesis for the Intensification of Tropical Cyclones under Moderate Vertical Wind Shear
A list of presenters from the 8 March 2018 Front Range Tropical Cyclone Workshop hosted by the National Center for Atmospheric Research in Boulder, CO.
24 October 2016 – Fort Collins
Presenter NameAffiliationPresentation Title
Bonnie BrownUniv. HawaiiModifications to a Partially Double Moment Microphysics Parameterization for Hurricane Simulations
Chris DavisNCAR/UCARDiverging Paths: ECMWF and GFS TC Forecasts
Chris SlocumCSU/ATSA Simplified Model for Tropical Cyclone Intensification
Evan KalinaCIRESPower Spectra and Eddy Dissipation Rate Measured by the Coyote Unmanned Aircraft System in Hurricane Edouard (2014)
Falko Judt NCAR/UCARPredictability and Dynamics of Tropical Cyclone Rapid Intensification
John KnaffNOAA/NESDIS/STARSynthetic Hurricane Wind Fields Based on Modeled Winds and Infrared Imagery: Method, Results, and Potential Applications
John PersingNPSHurricanes in Periodic Domains
Jonathan MartinezCSU/ATSPotential Vorticity Structure of Hurricane Patricia During Rapid Intensification
Jonathan VighNCAR/UCARThe Tropical Cyclone Observations-Based Structure Database (TC-OBS)
Mel Nicholls CIRESA Numerical Modeling Investigation of Several Physical Processes that Appear to be Important for Tropical Cyclogenesis
Michael BellCSURetrieved Thermodynamic Structure of Hurricane Rita (2005) using RAINEX Observations
Mike FiorinoNOAA/OAR/ESRLAn Alternative Metric of TC ‘Forecast Error’
Ren SmithCU-BoulderOn the Formation and Evolution of Small Scale Low Level Vorticity Anomalies During Tropical Cyclogenesis
Stephanie PilkingtonCSU/CEHurricane Impact Level Ranking System Model
Stephen HerbenerCSU/ATSTropical Storm Redistribution of Saharan Dust to the Upper Troposphere and Ocean Surface
A list of presenters from the 24 October 2016 Front Range Tropical Cyclone Workshop hosted by Colorado State University in Fort Collins, CO.
21 July 2015 – Boulder
Presenter NameAffiliationPresentation Title
Ben TrabingOUAnalysis of Hurricanes Using Long-Range Lightning Detection Networks
Chris SlocumCSU/ATSCan comparisons of precipitable water from models and satellite provide guidance on guidance?
Cindy BruyereNCAR/UCARIdealized Tropical Storms on Planet Oz
Colin ZarzyckiNCAR/UCARDo tropical cyclone cold wakes impact storm climatology in a high-resolution global model?
Daniel SternNCAR/UCARThe Structure and Dynamics of Coherent Vortices in the Eyewall Boundary Layer of Tropical Cyclones
Galina ChirokovaCIRAQuality of ATMS-MIRS retrievals for Atlantic Tropical Cyclones
John KnaffNOAA/NESDIS/STARUsing Routinely Available Information to Estimate Tropical Cyclone Wind Structure
John PersingNPSThe Sensitivity of Intensification to WISHE Feedback
Josh WattsNCAR/UCARSocial science & tropical cyclones
Justin Baldizón StarkCSU/CMMAPExamining intensity trends during extratropical transition
Kate MusgraveCIRAVerification of HWRF synthetic satellite brightness temperatures
Michael NatoliUMDPredicting Tropical Cyclogenesis Using Model Diagnostics of Operationally Analyzed Tropical Disturbance
Tom GalarneauNCAR/UCARAggregation of Parameterized Convection in Idealized Simulations
A list of presenters from the 21 July 2015 Front Range Tropical Cyclone Workshop hosted by the National Center for Atmospheric Research in Boulder, CO.
10 November 2014 – Fort Collins
Presenter NameAffiliationPresentation Title
Andrea SchumacherCIRAEvaluating subjective uncertainty estimates in NHC forecast discussions
Chris DavisNCAR/UCARReconciling different perspectives of tropical cyclone genesis
Chris SlocumCSU/ATSRevisiting the slab boundary layer model for tropical cyclones
Dan SternNCAR/UCARRevisiting the relationship between eyewall contraction and intensification
George BryanNCAR/UCARMethods to calculate vertical diffusion in numerical models and their effect on hurricane structure
John KnaffNOAA/NESDIS/STARAn argument for gale force wind forecasts beyond 72 hours for tropical cyclones
Jonathan PoterjoyNCAR/UCARA comparison of four-dimensional data assimilation methods with and without a tangent linear model for predicting the genesis of Hurricane Karl (2010)
Kate MusgraveCIRAEvaluation of HWRF for the 2014 Atlantic hurricane season
Mike FiorinoNOAA/OAR/ESRLGFS (and FIM) spuricane activity in the Gulf of Mosquitoes during the 2014 season
Tom CalarneauNCAR/UCARClimatology of vertical wind shear near tropical disturbances
A list of presenters from the 10 November 2014 Front Range Tropical Cyclone Workshop hosted by Colorado State University in Fort Collins, CO.
8 January 2014 – Boulder
Presenter NameAffiliationPresentation Title
Alick HaruhiruNCAR/UCARExamining the use of tropical cyclone genesis in present and future climate for the South Pacific basin
Chris DavisNCAR/UCARThe Inner Pouch
Chris SlocumCSU/ATSTropical cyclone boundary layer shocks
Daniel SternNCAR/UCARThe Structure and Dynamics of Coherent Vortices in the Eyewall Boundary Layer of Tropical Cyclones
Galina ChirokovaCIRARII estimates with ATMS profiles
Ghassan AlakaCSU/ATSIntraseasonal Variability of African Easterly Waves
Greg HollandNCAR/UCARResponse of Australian Temperature Extremes to Climate Variability and Change
John KnaffNOAA/NESDIS/STARAccounting for Variations in TC Size
Jonathan VighNCAR/UCARSteps Toward an Improved Database for Tropical Cyclone Wind Modeling
Kate MusgraveCIRAVerification of HWRF synthetic satellite brightness temperatures
Mark DeMariaNOAA/NESDIS/STARApplication of the Computer Vision Hough Transform for Automated Tropical Cyclone Center-Fixing from Satellite Data
Mike FiorinoNOAA/OAR/ESRLIntensity v Forecast (track) Error – how/are they related?
Thomas GalarneauNCAR/UCARAnalysis of Hurricane Rita (2005) Track Forecasts using Ensemble Reforecast Data
A list of presenters from the 8 January 2014 Front Range Tropical Cyclone Workshop hosted by the National Center for Atmospheric Research in Boulder, CO.
16 May 2013 – Fort Collins
Presenter NameAffiliationPresentation Title
Chris SlocumCSU/ATSInterpretation of hurricane concentric eyewalls as boundary layer shock-like structures
Daniel SternNCAR/UCARHow does the eye Warm?: A potential temperature and trajectory analysis of idealized tropical cyclones
Galina ChirokovaCIRATropical Cyclones thermodynamic analysis using satellite microwave soundings
Gus AlakaCSU/ATSIntraseasonal variability of AEWs
John KnaffNOAA/NESDIS/STARStatistically estimating tropical cyclone surface winds from 2-dimensional satellite imagery
Jonathan VighNCAR/UCARDevelopment of an HWRF diagnostics module to evaluate intensity and structure using synthetic flight paths through tropical cyclones
Kate Musgrave CIRA
Kimberly MuellerRMSHurricane and storm surge modeling at Risk Management Systems (RMS)
Man ZhangCIRAAssimilation of all-sky satellite radiances in TC core area using an ensemble-based data assimilation method
Mark DeMariaNOAA/NESDIS/STARA simple ocean cooling parameterization for the SHIPS model
Steve HerbenerCSU/ATSAerosol indirect effects on idealized tropical cyclone dynamics
Steve SaleebyCSU/ATSInfluence of Saharan dust on the microphysical structure of deep tropical convectionInfluence of Saharan dust on the microphysical structure of deep tropical convection
Yumin MoonNCAR/UCARInner rainbands and vortex-Rossby waves in numerical simulations of tropical cyclones
A list of presenters from the 16 May 2013 Front Range Tropical Cyclone Workshop hosted by Colorado State University in Fort Collins, CO.
16 August 2012 – Boulder
Presenter NameAffiliationPresentation Title
Andrea SchmacherCIRASocioeconomic Applications of Monte Carlo Wind Speed Probabilities
Chris DavisNCAR/UCARMicrowave Temperature Profiler Observations in Tropical Waves
Greg HollandNCAR/UCARWhat if We Could Play God with Regional Climate?
Gus AlakaCSU/ATSIntraseasonal Variability of Upstream AEW Initiation
James DoneNCAR/UCARTropical Cyclone Rainfall Modeling
John KnaffNOAA/NESDIS/STARTC Size Matters
Jonathan VighNCAR/UCARLarge-scale diagnostics work with the basin-scale HWRF
Julie DemuthNCAR/UCARCreating and Communicating Hurricane Risk Information
Kate MusgraveCIRAGlobal Ensemble TC Diagnostics
Man ZhangCIRAEfficient methods to assimilate cloud-affected satellite radiances
Mark DeMariaNOAA/NESDIS/STARVertical Shear Modification of Maximum Potential Intensity Estimates
Mike FiorinoNOAA/OAR/ESRLTC genesis and demographics
Stephanie SladeCSU/ATSAn intraseasonal model for the prediction of Atlantic and East Pacific Tropical Cyclone Genesis
Thomas GalarneauNCAR/UCARInter-Annual Variability of African Easterly Waves in the NCAR Nested Regional Climate Model
A list of presenters from the 16 August 2012 Front Range Tropical Cyclone Workshop hosted by the National Center for Atmospheric Research in Boulder, CO.
16 November 2011 – Fort Collins
Presenter NameAffiliationPresentation Title
Andrea SchumacherCIRAAnother Look at the Use of Maximum Potential Intensity of Tropical Cyclones
Brian TangNCAR/UCARA long-term, global tropical disturbance database
Chris DavisNCAR/UCARTemperature Anomalies in Tropical Disturbances
Dara SchönemannUniv. HamburgTechniques to maintain the steady-state of TCs in axisymmetric high-resolution models
Gabriel WilliamsCSU/ATSInstability of Vorticity Rings with Vertical Shear
John KnaffNOAA/NESDIS/STARTypical Upper Oceanic Energy Response to Tropical Cyclone Passage
Jonathan VighNCAR/UCARHow Often Does Eye Formation Coincide with Rapid Intensification?
Kate MusgraveCSU/ATSTime Evolution of the Size and Intensity of Tropical Cyclones or Atlantic TC Eye Estimates from Aircraft Reconnaissance
Man ZhangCIRARadiance data assimilation in TC inner core
Mark DeMariaNOAA/NESDIS/STARAnalysis of Tropical Cyclone Steering Levels
Mike FiorinoNOAA/OAR/ESRLTCgen2 — applications of a multi-deterministic global model ensemble to a specific NHC genesis forecast problem — probability of formation in 48 and 120 h
Thomas GalarneauNCAR/UCARDiagnosing Tropical Cyclone Motion Errors in AHW
A list of presenters from the 16 August 2012 Front Range Tropical Cyclone Workshop hosted by Colorado State University in Fort Collins, CO.
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