Weather Alert in Colorado

Recent Locations: Jefferson, OR Hambleton, WV Karval, CO

Dense Fog Advisory issued August 25 at 11:33AM MDT until August 25 at 12:00PM MDT by NWS Goodland KS

AREAS AFFECTED: Yuma County; Kit Carson County; Cheyenne County; Cheyenne; Rawlins; Sherman; Thomas; Wallace; Logan; Greeley; Wichita; Dundy

DESCRIPTION: As of 1130 am MDT, visibilities across the advisory area have risen above 1 mile in most locations. In Oakley and Wray, where patchy dense fog persists, visibilities are expected to improve during the next hour or two.

INSTRUCTION: N/A

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North America Water Vapor (Moisture)

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Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds

Weather Topic: What is Drizzle?

Home - Education - Precipitation - Drizzle

Drizzle Next Topic: Evaporation

Drizzle is precipitation in the form of water droplets which are smaller than raindrops.

Drizzle is characterized by fine, gently falling droplets and typically does not impact human habitation in a negative way. The exception to this is freezing drizzle, a condition where drizzle freezes immediately upon reaching earth's surface. Freezing drizzle is still less dangerous than freezing rain, but can potentially result in hazardous road conditions.

Next Topic: Evaporation