Humberto Vergara, PhD

Personal website


PhD School of Civil Engineering and Enviromental Science, University of Oklahoma, 2015

MSc School of Civil Engineering and Enviromental Science, University of Oklahoma, 2011

BSc Environmental Engineering, El Bosque University, Bogota – Colombia, 2007

Research Interests

Hydrological Modeling

Probabilistic Forecasting

Data Assimilation

Research Experience

Post-Doctoral Research Associate, Cooperative Institute for Mesoscale Meteorological Studies (CIMMS), University of Oklahoma.

Graduate Research Assistant, CEES, University of Oklahoma. 2008 ~ 2015

Contact Information


27Hydrologic modeling"Yami, T. L., Gao, S., Chen, M., Li, Z., Vergara, H., Clark, R. R., ... & Hong, Y.", 2021: CREST/EF5 capacity building to enhance resilience to hydrodynamic disasters in emerging regions. African Journal of Environmental Science and Technology, 15 (6), 230-242.2021
26Flash floodGourley, J. J., and H. Vergara, 2021: Comments on Flash flood verification: Pondering precipitation proxies. J. Hydrometeor. doi: 10.1175/JHM-D-20-0215.1.2021
25Flash floodGourley, J. J., H. Vergara, A. Arthur, R. A. Clark III, D. Staley, J. Fulton, L. Hempel, D. C. Goodrich, K. Rowden, and P. R. Robichaud, 2020: ”Predicting the Floods that Follow the Flames". Bull. Amer. Meteor. Soc, 101, E1101–E1106. doi: 10.1175/BAMS-D-20-0040.1.2020
24Flash floodMartinaitis, S. M., B. Albright, J. J. Gourley, S. Perfater, T. Meyer, Z. L. Flamig, R. A. Clark III, H. Vergara, and M. Klein, 2020: The 23 June 2016 West Virginia flash flood event as observed through two Hydrometeorology Testbed Experiments. Wea. Forecasting, 35, 2099-2126. doi: 10.1175/WAF-D-20-0016.1.2020
23Hydrologic modelingFlamig, Z., H. Vergara, and J. J. Gourley, 2020: The Ensemble Framework For Flash Flood Forecasting (EF5) v1.2: description and case study.. Geosci. Model Dev., 13, 4943-4958. doi: 10.5194/gmd-13-4943-2020.2020
22Natural HazardsB Blanton, K Dresback, B Colle, R Kolar, H Vergara, Y Hong, N Leonardo, 2020: An integrated scenario ensemble‐based framework for hurricane evacuation modeling: Part 2—Hazard modeling. Risk analysis, 40, 117-1331.2020
21Flash floodYussouf, N., K. A. Wilson, S. M. Martinaitis, H. J. Vergara, P. L. Heinselman, and J. J. Gourley, 2020: Coupling of NSSL Warn-on-Forecast and FLASH systems for probabilistic flash flood prediction. Journal of Hydrometeorology, 21, 123-141. doi: 10.1175/JHM-D-19-0131.1.2020
20Natural HazardsBlanton, B., K. Dresback, B. Colle, R. Kolar, R. Vergara, Y. Hong, and T. Wachtendorf, 2018: An Integrated Scenario Ensemble-Based Framework for Hurricane Evacuation Modeling: Part 2-Hazard Modeling. Risk analysis. doi: 10.1111/risa.13004.2018
19Flash floodSaharia, M., P. Kirstetter, H. Vergara, J.J. Gourley, Y. Hong, and M. Giroud, 2017: Mapping Flash Flood Severity in the United States. J. Hydrometeor, 18, 397-411. doi: 10.1175/JHM-D-16-0082.1.2017
18FloodManabendra Saharia, Pierre-Emmanuel Kirstetter, Humberto Vergara, Jonathan J. Gourley, Yang Hong, 2017: Characterization of floods in the United States. Journal of Hydrology, 548, 524-535. doi: 10.1016/j.jhydrol.2017.03.010.2017
17FloodSaharia, M., P. Kirstetter, H. Vergara, J. Gourley, Y. Hong, and M. Giroud, 2017: Mapping Flash Flood Severity in the United States.. J. Hydrometeor., 18, 397–411. doi: 10.1175/JHM-D-16-0082.1.2017
16HydrologyVergara, Humberto, et al. , 2016: Estimating a-priori kinematic wave model parameters based on regionalization for flash flood forecasting in the Conterminous United States. Journal of Hydrology, 541, 421-433. doi: 10.1016/j.jhydrol.2016.06.011.2016
15FloodGourley, J., Z. Flamig, H. Vergara, P. Kirstetter, R. Clark, E. Argyle, A. Arthur, S. Martinaitis, G. Terti, J. Erlingis, Y. Hong, and K. Howard, 2016: The Flooded Locations And Simulated Hydrographs (FLASH) project: improving the tools for flash flood monitoring and prediction across the United States. . Bull. Amer. Meteor. Soc.,. doi: 10.1175/BAMS-D-15-00247.1.2016
14Hydrological ModelingClark, R., Z. Flamig, H. Vergara, Y. Hong, J. Gourley, D. Mandl, S. Frye, M. Handy, and M. Patterson, 2016: Hydrological Modeling and Capacity Building in the Republic of Namibia. Bulletin of the American Meteorological Society. doi: 10.1175/BAMS-D-15-00130.1.2016
13Monsoon; Indus BasinS. I. Khan, Y. Hong, J. J. Gourley, M. U. K. Khattak, and H. J. Vergara, 2015: Spatial and Diurnal Variability of Monsoon Systems assessed by TRMM rain rate over Indus Basin. IEEE JSTAR, 8 (9), 4325-4335. doi: 10.1109/JSTARS.2015.2421947.2015
12Ensemble Kalman FilterVergara, Humberto, Yang Hong, and Jonathan J. Gourley, 2014: Improving Flood Forecasting Skill with the Ensemble Kalman Filter. Revista de Tecnología, 13 (1), 9-27.2014
11Hydrologic ModelingHumberto Vergara, Yang Hong, Jonathan J. Gourley, Emmanouil N. Anagnostou, Viviana Maggioni, Dimitrios Stampoulis, and Pierre-Emmanuel Kirstetter, 2014: Effects of Resolution of Satellite-Based Rainfall Estimates on Hydrologic Modeling Skill at Different Scales. J. Hydrometeor, 15 (2), 593–613. doi: 10.1175/JHM-D-12-0113.1. PDF.2014
10Satellite, PrecipitationKhan, S. I., Y. Hong, J. J. Gourley, M.U. Khattak, B. Yong, H. J. Vergara, 2014: Evaluation of Three High-Resolution Satellite Precipitation Estimates. Potential for Monsoon Monitoring over Pakistan. Advances in Space Research, 54 (4), 670-684. doi: 10.1016/j.asr.2014.04.017. PDF.2014
9FloodMei, Y., Anagnostou, E.N., Stampoulis, D., Nikolopoulos, E.I., Borga, M., Vergara, H., 2013: Rainfall Organization Control on the Flood Response of mild-slope Basins. Journal of Hydrology. doi: 10.1016/j.jhydrol.2013.12.013. PDF.2013
8HydrologyDresback, K. M., J. G. Fleming, B. O. Blanton, C. Kaiser, J. J. Gourley, E. M. Tromble, R. A. Luettich Jr., R. L. Kolar, Y. Hong, S. Van Cooten, H. J. Vergara, Z. L. Flamig, H. M. Lander, K. E. Kelleher, K. L. Nemunaitis-Monroe, 2013: Skill assessment of a real-time forecast system utilizing a coupled hydrologic and coastal hydrodynamic model during Hurricane Irene (2011). Continental Shelf Research, 71, 78-94. doi: 10.1016/j.csr.2013.10.007. PDF.2013
7Data Assimilation, Remote SensingZhang, Y., Y. Hong, X. Wang, J.J. Gourley, J. Gao, H. Vergara and B. Yong, 2013: Assimilation of Passive Microwave Streamflow Signals for Improving Flood Forecasting: A First Study in Okavango River Basin, Africa. IEEE Journal of Sepected Topics in Applied Earth Observations and Remote Sensing. doi: 10.1109/JSTARS.2013.2251321. PDF.2013
6Remote Sensing, HydrologyMaggioni, V., H. J. Vergara, E. N. Anagnostou, J. J. Gourley, Y. Hong, and D. Stampoulis, 2013: Investigating the applicability of error correction ensembles of satellite rainfall products in river flow simulations. Journal of Hydrometeorology, 14 (4), 1194–1211. doi: 10.1175/JHM-D-12-074.1. PDF.2013
5Remote Sensing, HydrologyKhan, S. I., Y. Hong, H. J. Vergara, J. J. Gourley, G. R. Brakenridge, T. De Groeve, Z. L. Flamig, F. S. Policelli, and B. Yong , 2012: Microwave Satellite Data for Hydrologic Modeling in Ungauged Basins. Geoscience and Remote Sensing Letters, IEEE, 9 (4), 663-667. doi: 10.1109/lgrs.2011.2177807. PDF.2012
4Storm surgeVan Cooten, S., K. E. Kelleher, K. Howard, J. Zhang, J. J. Gourley, J. S. Kain, K. Nemunaitis-Monroe, Z. Flamig, H. Moser, A. Arthur, C. Langston, R. Kolar, Y. Hong, K. Dresback, E. Tromble, H. Vergara, R. A. Luettich, B. Blanton, H. Lander, K. Galluppi, J. P. Losego, C. A. Blain, J. Thigpen, K. Mosher, D. Figurskey, M. Moneypenny, J. Blaes, J. Orrock, R. Bandy, C. Goodall, J. G. W. Kelley, J. Greenlaw, M. Wengren, D. Eslinger, J. Payne, G. Olmi, J. Feldt, J. Schmidt, T. Hamill, R. Bacon, R. Stickney and L. Spence, 2011: The CI-FLOW Project: A System for Total Water Level Prediction from the Summit to the Sea. Bulletin of the American Meteorological Society, 92 (11), 1427-1442. doi: 10.1175/2011bams3150.1. PDF.2011
3Remote Sensing, HydrologyKhan, S. I., P. Adhikari, Y. Hong, H. Vergara, R. F Adler, F. Policelli, D. Irwin, T. Korme and L. Okello, 2011: Hydroclimatology of Lake Victoria region using hydrologic model and satellite remote sensing data. Hydrology and Earth System Sciences, 15 (1), 107-117. doi: 10.5194/hess-15-107-2011. PDF.2011
2Remote Sensing, HydrologyGourley, J. J., Y. Hong, Z. L. Flamig, J. Wang, H. Vergara and E. N. Anagnostou, 2011: Hydrologic Evaluation of Rainfall Estimates from Radar, Satellite, Gauge, and Combinations on Ft. Cobb Basin, Oklahoma. Journal of Hydrometeorology, 12 (5), 973-988. doi: 10.1175/2011jhm1287.1. PDF.2011
1Hydrology, Remote SensingKhan, S. I., P. Adhikari, Y. Hong, H. Vergara, T. Grout, R. F. Adler, F. Policelli, D. Irwin, T. Korme and L. Okello, 2010: Observed and simulated hydroclimatology using distributed hydrologic model from in-situ and multi-satellite remote sensing datasets in Lake Victoria region in East Africa. Hydrology and Earth System Sciences Discussions, 7 (4), 4785-4816. doi: 10.5194/hessd-7-4785-2010. PDF.2010