Evaporation or Mixing Fog - This type of fog forms when sufficient water vapor is added to the air by evaporation, and the moist air mixes with relatively drier air. The two common types are steam fog and frontal fog. Steam fog forms when cold air moves over warm water. This type of fog takes on the appearance of wisps of smoke rising off the surface of the water. The other type of evaporation fog is known as frontal fog. This type of fog forms when warm raindrops evaporate in a cool air mass near the ground.

Air Mass Thunderstorm - Generally, a thunderstorm not associated with a front or other type of synoptic-scale forcing mechanism. Air mass thunderstorms typically are associated with warm, humid air in the summer months; they develop during the afternoon in response to solar heating, and typically have a short lifespan. They are less likely to be severe than other types of thunderstorms, but they are still capable of producing gusty winds, brief heavy rain, and (in extreme cases) hail over 3/4 inch in diameter.

Lee-Side - The term lee-side in general refers to the sheltered side from the wind. In weather, this term is used when referring to the sides of a mountain range. The side that takes the prevailing winds first is known as the windward side, while the side opposite the prevailing winds is the lee-side. The lee-side of the Rocky Mountains is to the east of the mountain range.

Mountain Breeze - A wind pattern that develops during the night due to differential cooling on the mountain compared to nearby valleys. The mountain cools faster than the valleys in the evening. This cool, dense air blows down the mountainsides into the valleys. The opposite occurs during the day, which produces an upslope wind known as the valley breeze.

Typhoon - A tropical cyclone located in the Northwest Pacific Ocean that has sustained winds of 74 mph or greater. When a typhoon has sustained winds of 150 mph or greater it is called a super typhoon. A super typhoon is only 7 mph short of what would be called a category 5 hurricane if it were located in the Atlantic Ocean.

Aurora - Luminous phenomena that appear in the form of arcs, bands, draperies, or curtains in the high atmosphere over high latitudes. Auroras are related to magnetic storms and the influx of charged particles from the Sun. The phenomena are called aurora borealis in the Northern Hemisphere and aurora australis in the Southern Hemisphere.

Cloud - Any visible mass of water droplets, ice crystals, or a mix of both that become suspended in the atmosphere. Fog is a cloud that forms at the ground, while cirrus clouds oftentimes form at around 40,000 feet.