“OUR VISIONFree exchange of accurate information regarding the efficacy, safety, methodology and cost-effectiveness of weather modification activities. "
News & Upcoming Events
Recent Industry News
KOLD.com: April 19, 2024
How cloud seeding can impact Arizona’s desert climate
Upcoming Association Meetings
Join us in Las Vegas, NV, April 15-19, 2024 at the MGM Grand for the 2024 Annual Weather Modification Association Conference. See our Meetings page for full details. We are looking forward to seeing you there!
What is Cloud Seeding?
Weather Modification can be both planned, as is the case in cloud seeding, or inadvertent, for example, when pollution affects visibility. Planned (deliberate) weather modification is also commonly know as cloud seeding, cloud modification, or atmospheric water management.
Current Executive Officers
Dan Breed
PRESIDENTAfter graduating from the Atmospheric Science Department at Colorado State University, Daniel Breed worked as a research meteorologist at the National Center for Atmospheric Research (NCAR). During his 41-year career at NCAR, he participated in more than 40 field projects on convective storms, precipitation development, early electrification, boundary layer studies, and weather modification (hail formation, convective clouds, winter storms). He has flown more than 1000 hours as the on-board scientist during research flights, and managed the NCAR sailplane program for 10 years. During his time at NCAR and continuing today, Breed has lectured at numerous universities in the U.S. and South Africa, supervising both undergraduates and graduate students.
Jonathan Jennings
PRESIDENT-ELECTJonathan Jennings is a meteorologist for the Utah Department of Natural Resources working within the Division of Water Resources. As a WMA certified operator, Jonathan brings 13 years of experience to Utah from Texas where he ran weather modification operations in West Texas across the Concho Valley, Rolling Plains, and the Trans-Pecos regions. He was also highly involved with government relations, flare development and manufacturing, and pilot management. Jonathan is also owner and operator of Advanced Weather Modification Solutions where he provides weather modification operations, research, and consulting services. He graduated from now Penn West University (formerly California University of PA) in 2008.
David Yorty
SECRETARYDavid has both a bachelors and masters degree in meteorology from the University of Utah. He is enthusiastic about all aspects of meteorology and has been involved in research projects, operational programs, in-depth analysis, and weather forecasting. He enjoys the outdoors and sports including hiking, biking, and snowboarding among many others. David is employed with North American Weather Consultants.
Andrew Detwiler
PAST PRESIDENTAndrew Detwiler has spent more than 30 years studying the formation of precipitation and the electrification of convective storms, including the effects of cloud seeding. Most of this work was done at the South Dakota School of Mines and Technology (SDSMT) working with the armored T-28 storm research aircraft. While at SDSMT he also taught in the Atmospheric Sciences and Physics programs, and supervised more than 20 graduate students, More recently he has been affiliated with the University of North Dakota where he has continued to do research with collaborators there and taught several courses in the Atmospheric Sciences Department.
Weather Modification Certified Operators & Managers
WMA Operator and Manager certifications are based on criteria that are intended to ensure the meteorological and technical understanding, as well as commitment to ethical principles, of those conducting and managing cloud seeding operations. These principles are outlined in the ASCE guidelines for weather modification. The utilization of certified operators and managers for seeding programs is of benefit to the public, both in helping to recognize and take advantage of seeding opportunities during storm events, as well as recognizing and responding to potentially hazardous situations where seeding may not be desirable. Certification is based on criteria that include education, experience in the field of weather modification, and in-depth knowledge of the corresponding meteorological processes.
If you are interested in becoming a certified operator or manager, click the Qualifications & Procedures button below. In order to become certified, you must be a member of the Weather Modification Association.
Thank You Corporate Members