Thea Sandmæl


Stormscale Convection & Radar Team (SCRT)

Job Title:Research Associate


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Thea is a research associate with CIWRO/NSSL in the Warning Research and Development Division. Her research interests include radar data associated with severe storms, tornado prediction and detection, and machine learning. She also collaborates with the Probabilistic Hazards Information and the Warn-on-Forecast System teams to provide probabilistic guidance for tornadoes, and occasionally joins the NOXP crew for field projects. Additionally, Thea is involved with several NOAA Hazardous Weather Testbed Experimental Warning Program experiments and works towards research-to-operations goals by collaborating with National Weather Service forecasters. Other areas of interest include work with TC tornadoes, software development in WDSS-II, generating big datasets relating to tornadic storms, tornado warnings, severe storm reports, as well as mentoring and working with students.

Degree (Ph.D, M.S, B.A, etc.) Major Subject University or College Name Year (YYYY) (optional)
B.S. Meteorology University of Oklahoma 2015
M.S. Meteorology University of Oklahoma 2017
Research Interests
  • Radar meteorology
  • Severe storms
  • Machine learning
  • R2O
  • Tornadoes
Professional Activities
  • Software development
  • Hazardous Weather Testbed experiments
  • Fieldwork
Selected Publications

Sandmæl, T. N.B. R. SmithA. E. ReinhartI. M. SchickM. C. AkeJ. G. MaddenR. B. SteevesS. S. WilliamsK. L. ElmoreT. C. Meyer2023The Tornado Probability Algorithm: A Probabilistic Machine Learning Tornadic Circulation Detection AlgorithmWeather and Forecasting38, 3, 445–466, doi:10.1175/WAF-D-22-0123.1.

Sandmæl, T. N.B. R. SmithJ. G. MaddenJ. W. MonroeP. T. HylandB. A. SchenkelT. C. Meyer2023The 2021 Hazardous Weather Testbed Experimental Warning Program Radar Convective Applications Experiment: A Forecaster Evaluation of the Tornado Probability Algorithm and the New Mesocyclone Detection AlgorithmWeather and Forecasting3871125–1142, doi:10.1175/WAF-D-23-0042.1.

Homeyer, C. R.T. N. SandmaelC. K. PotvinA. M. Murphy2020Distinguishing Characteristics of Tornadic and Nontornadic Supercell Storms from Composite Mean Analyses of Radar ObservationsMonthly Weather Review1485015–5040, doi:10.1175/MWR-D-20-0136.1.