September 8, 2026
What if we could do more than just watch the weather change?
What if we could study the atmosphere closely enough to influence what happens inside a cloud?
That question sits at the heart of Weather Modification Incorporated, a company based in Fargo, North Dakota, that brings together meteorology, atmospheric science, aircraft, and advanced technology to better understand and, in certain circumstances, modify weather.
Visiting the Royal Aviation Museum of Western Canada on September 18 and 19, Weather Modification International will feature its unique Beechcraft King Air used in a field where the sky itself becomes the laboratory.
Weather modification is best known for cloud seeding, a scientific technique designed to enhance clouds’ natural ability to produce precipitation. However, the work begins long before an aircraft enters a cloud. Meteorologists analyze weather patterns, atmospheric conditions, and local data to determine where and when conditions may be suitable for a project.
Weather Modification International provides project-specific forecasting for applications ranging from water resource management and agriculture to construction, environmental monitoring and specialized industrial needs. Its scientists can also analyze existing weather datasets and use numerical models to simulate atmospheric processes, either predicting how an event might develop or reconstructing what happened during a past storm.
Reading the Atmosphere
Comprehending what is happening inside and around a cloud requires more than looking at a weather forecast. Weather Modification International uses technology such as Doppler weather radar, atmospheric sounding systems and microwave radiometers to measure conditions throughout the atmosphere.
These tools can help reveal precipitation intensity and movement, cloud development, temperature, humidity, wind and atmospheric water. Together, the data provide scientists with a more detailed picture of the conditions that can influence cloud formation and precipitation.
At the heart of cloud development is a microscopic process called nucleation. Invisible water vapour can transform into cloud droplets and ice crystals when atmospheric conditions and airborne particles provide the right environment. These particles, known as nuclei, can originate from sources ranging from oceans to deserts to wildfires, transportation and volcanic activity.
Seeding the Clouds
Cloud seeding works by introducing selected seeding agents into suitable clouds to encourage precipitation processes. Weather Modification International. uses two primary approaches: hygroscopic seeding, which influences processes in warmer clouds, and glaciogenic seeding, which promotes ice formation in supercooled clouds.
Aircraft can deliver seeding agents either beneath a cloud, where they can enter an updraft, or directly into the cloud itself. In the right conditions, the goal is to give naturally occurring cloud processes a scientific push, potentially increasing rainfall or snowfall.
Cloud seeding can also be used in efforts to reduce hail damage. Strong thunderstorms can contain large amounts of supercooled liquid water, which contributes to hail formation. By encouraging the formation of greater numbers of smaller ice particles, cloud-seeding programs aim to influence how ice develops within these storms and potentially reduce the size of hail reaching the ground.
The same principles can also be applied to certain types of supercooled fog, where glaciogenic seeding can encourage ice formation and help disperse the fog.
The Aircraft Behind the Science
Aircraft are an important part of this work as they allow scientists to reach atmospheric conditions that cannot always be studied from the ground. Depending on the project, Weather Modification Inc. operates aircraft including Beechcraft King Air, Hawker, Bombardier, Piper and Cessna platforms. These aircraft can serve as mobile scientific platforms, carrying equipment and seeding systems into the atmosphere while meteorologists monitor changing conditions on the ground.
The aircraft are only one part of a much larger system. Radar, weather stations, atmospheric measurements, forecasting and numerical modelling all contribute to determining when and where a weather-modification operation may be appropriate.
From Forecasting to Flight
Weather modification sits at the intersection of aviation and atmospheric science. It requires pilots who can operate safely in challenging weather, meteorologists who understand rapidly changing atmospheric conditions, and scientists who can interpret enormous amounts of environmental data.
For visitors, the aircraft offers a rare glimpse into a specialized side of aviation, one where the mission isn’t to travel through the atmosphere, but to measure it, understand it and investigate what might be possible within it. When Weather Modification International arrives on September 18 and 19, visitors will have the opportunity to see the Beechcraft King Air aircraft behind this work and explore how aviation has become an important tool in the scientific study of weather!
By Mansha Kainth
Research and Communications Specialist
Royal Aviation Museum of Western Canada
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