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Kaylee Heimes

Profile picture for Kaylee Heimes

Contact Information

4044 Natural History Building
1301 W. Green St.
Urbana, IL 61801
Graduate Research Assistant, Advisor: Dr. Robert Rauber

Biography

I am a second year masters student working with Dr. Robert Rauber. My research focuses investigating the manifestation of elevated potential instability (EPI) within the comma head of wintertime extratropical cyclones in the eastern United States. When elevated convection results from EPI, heavy snowfall and, in some cases, thunder snow occurs. I am analyzing model data along side airborne X and W-band radar data from 19 storms sampled during the Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) field campaign. Elevated convection is visible in vertically pointing radars as convective towers and in model data where equivalent potential temperature decreases with height. Properties of EPI in radar and model data are statistically composited over multiple cyclones to determine how EPI develops and occurs in multiple cyclones. 

As an undergraduate student, I worked with Dr. Robert Rauber to analyze airborne W-band radar data from the Seeded and Natural Wintertime Orographic Clouds: the Idaho Experiment (SNOWIE). Within wintertime orographic clouds during SNOWIE there were transient and fixed, orographically-forced vertical circulations that ranged in size and strength. Trajectories of ice particles were run through vertical cross sections of vertical motions from a 900 m WRF simulation and vertical motion derived from the W-band vertical Doppler radial velocity to assess the impact of transient features on the trajectories of ice particles created by cloud seeding.

Outside of winter storm research, I held an internship with the National Severe Storms Laboratory under Dr. Harold Brooks and Dr. Kimberly Hoogewind where we used self-organizing maps of 500 mb daily ensemble mean heights from the 20th Century Reanalysis Dataset Version 3 to determine the efficiency of height patterns at producing tornado days. I was a student volunteer during the 2022 season of Propagation, Evolution, and Rotation in Linear Storms (PERiLS) where I launched weather balloons in the field.

Education

University of Illinois Urbana-Champaign

M.S. Atmospheric Sciences (in progress)

B.S. Atmospheric Sciences, graduated with highest distinction (2022)

Awards and Honors

2023 Summer School in mm-Wavelength Radar Observations of Clouds and Precipitation Competition Winner

2022 Ogura Outstanding Undergraduate Research Award

2020 NOAA Ernest F. Hollings Scholar

Courses Taught

Teaching Assistant

Spring 2023- ATMS 313: Synoptic Weather Forecasting

Fall 2022- ATMS 303: Synoptic-Dynamic Weather Analysis

Recent Publications

Heimes, K., T. J. Zaremba, R. M. Rauber, S. Tessendorf, L. Xue, K. Ikeda, B. Geerts, J. French, K. Friedrich, R. Rasmussen, M. L. Kunkel, D. R. Blestrud, 2022: Vertical Motions in Orographic Cloud Systems over the Payette River Basin. Part 3: An Evaluation of the Impact of Transient Vertical Motions on Targeting During Orographic Cloud Seeding Operations. J. Appl. Meteor. Climatol., 61, 1747-1771, https://doi.org/10.1175/JAMC-D-21-0230.1.

Zaremba, T. J., K. Heimes, R. M. Rauber, B. Geerts, J. R. French, C. Grasmick, S. Tessendorf, L. Xue, K. Friedrich, R. Rasmussen, M. L. Kunkel, and D. R. Blestrud, 2022b: Vertical Motions in Orographic Cloud Systems over the Payette River Basin. Part 2: Fixed and Transient Updrafts and their Relationship to Forcing. J. Appl. Meteor. Climatol., 61, 1727-1745, https://doi.org/10.1175/JAMC-D-21-0229.1.

Zaremba, T. J., R. M. Rauber, S. Haimov, B. Geerts, J. R. French, C. Grasmick, K. Heimes, S. A. Tessendorf, Katja Friedrich, L. Xue, R. Rasmussen, M. L. Kunkel, and D. R. Blestrud, 2022a: Vertical Motions in Orographic Cloud Systems over the Payette River Basin. Part 1: Recovery of Vertical Motions and their Uncertainty from Airborne Doppler Radial Velocity Measurements. J. Appl. Meteor. Climatol., 61, 1707-1725, https://doi.org/10.1175/JAMC-D-21-0228.1.