Gustnado - A gustnado is a small whirlwind which forms as an eddy in thunderstorm outflows. They do not connect with any cloud-based rotation and are not tornadoes. Gustnadoes can appear as a dust devil, as a dust or debris cloud is sometimes seen. Like dust devils, some stronger gustnadoes can cause damage.

Freezing Fog - Freezing fog occurs when the water droplets that the fog is composed of are supercooled. Supercooled water droplets remain in the liquid state until they come into contact with a surface upon which they can freeze onto. As a result, any object that freezing fog comes into contact with can become coated with ice. Freezing fog can make for treacherous driving conditions due to limited visibility combined with icy patches that can develop on the road.

Bright-Banding - Term used in radar interpretation to describe an area of stronger than expected radar echoes. This signature occurs in the location of the melting level in the atmosphere, which is where snowflakes are melting into raindrops. During this transition, the snowflakes become large and very wet, causing the radar to see them as very large raindrops. Bright-banding is commonly seen as a concentric ring of anomalously high reflectivities centered on the radar site.

Ceiling - A term that is commonly used in aviation. Ceiling is the height of the lowest layer of broken or overcast skies. This lets pilots know how far above the surface they will be once they get below the cloud layer.

Scintillation - The apparent twinkling of a star due to its light passing through regions of differing air densities in the atmosphere. This results in the light being refracted and scattered before it reaches the viewer.

Dry Thunderstorm - Generally a high-based thunderstorm where lightning is observed, but little if any precipitation reaches the ground. Most of the rain produced by the thunderstorm evaporates into relatively dry air located beneath the storm cell. Dry thunderstorms are notorious for starting wildfires.

Sundog - A colored luminous spot produced by refraction of light through ice crystals. Sun dogs are seen as bright spots that appear on either side of the sun. This optical phenomenon is also referred to as parhelion. They are most commonly seen during the winter season.