Weather Alert in Colorado

Recent Locations: Denver, CO   Chicago, IL  

Freeze Warning issued April 19 at 1:19AM MDT until April 19 at 9:00AM MDT by NWS Grand Junction CO

AREAS AFFECTED: Grand Valley; Central Gunnison and Uncompahgre River Basin; Paradox Valley/Lower Dolores River; Four Corners/Upper Dolores River; Animas River Basin

DESCRIPTION: * WHAT...For the Freeze Warning, sub-freezing temperatures as low as mid to upper 20s. For the Freeze Watch, sub-freezing temperatures as low as low to upper 20s possible. * WHERE...Animas River Basin, Four Corners/Upper Dolores River, Paradox Valley/Lower Dolores River, Central Gunnison and Uncompahgre River Basin, and Grand Valley. * WHEN...For the Freeze Warning, until 9 AM MDT this morning. For the Freeze Watch, from late tonight through Sunday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

INSTRUCTION: Take steps now to protect tender plants from the cold.

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Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

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Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

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