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The Cooperative Institute for Severe and High-Impact Weather Research and Operations (CIWRO), formerly known as the Cooperative Institute for Mesoscale Meteorological Studies (CIMMS), is a research organization formed in 1978 by a cooperative agreement between the National Oceanic and Atmospheric Administration and the University of Oklahoma.


Hazardous Weather Testbed Allows Researchers and Forecasters to Experiment With New Weather Software

During severe weather, colored polygons on radar maps represent traditional weather warnings. But for researchers with the Cooperative Institute for Severe and High-Impact Weather Research and Operations (CIWRO), the future of forecasting isn’t tied to a static shape. Adrian Campbell and Rebecca Steeves, research associates for CIWRO at the University of Oklahoma, were part of a team that recently conducted ...
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OU receives $888,000 grant to study Arctic clouds - Research will address blind spot in cloud microphysics

A research team from the University of Oklahoma has been awarded an $888,000 grant to explore how Arctic clouds form over time and to unlock secrets about the release of heat and radiation from the atmosphere. The three-year grant was one of 22 projects totaling $14 million funded by the U.S. Department of Energy this month to advance fundamental scientific understanding of atmospheric processes. Andrew Dzambo, ...
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CIWRO Research Leads to Improved Storm Forecasts for Spanish Speakers

Joseph Trujillo Falcón saw confusion among how Spanish speakers were receiving severe storm warnings while he was an undergraduate broadcast meteorology student at Texas A&M University. Direct translations from English didn’t carry the same urgency across the wide range of dialects. This issue spurred him to change his professional focus from forecasting to bilingual risk and crisis communication, and he joined ...
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In the developing of this web application, the Cooperative Institute has thoroughly prioritized accessibility. If you find that any feature of the application is difficult to use or inaccessible to you, please contact us at the information listed in our contact page. We will strive to fix any issue that arises, and we will continue furthering the accessbility of our site to uphold the Web Content Accessibility Guidelines (WCAG) in our product. In the future, we hope to achieve a level of AA conformance to the WCAG and are currently working towards that goal. Additionally, it is required that we provide a link to the University of Oklahoma's Web Accessibility Statement for all to be able to view from our site. The statement and related Univesity guidelines for accessbility can be found at