Weather Alerts for Colorado

Recent Locations: Addison, TX Homestead, FL Denver, CO

Current Alerts for Denver, CO: Red Flag Warning

1. Freeze Warning for: Lower Yampa River Basin; Grand Valley; Debeque to Silt Corridor; Central Colorado River Basin; Central Gunnison and Uncompahgre River Basin; Paradox Valley/Lower Dolores River; Four Corners/Upper Dolores River; Animas River Basin; San Juan River Basin; Eastern Uinta Basin; Arches/Grand Flat; Canyonlands/Natural Bridges

2. Freeze Watch for: Lower Yampa River Basin; Grand Valley; Debeque to Silt Corridor; Central Colorado River Basin; Central Gunnison and Uncompahgre River Basin; Paradox Valley/Lower Dolores River; Four Corners/Upper Dolores River; Animas River Basin; San Juan River Basin; Eastern Uinta Basin; Arches/Grand Flat; Canyonlands/Natural Bridges

3. Red Flag Warning for: Fremont County Including Canon City/Howard/Texas Creek; San Luis Valley Including Alamosa/Del Norte/Fort Garland/Saguache; Southern El Paso County Including Fort Carson and Colorado Springs; Pueblo County Including Pueblo; Huerfano County Including Walsenburg; Western Las Animas County Including Trinidad and Thatcher; Crowley County Including Ordway; Otero County Including La Junta and Western Comanche Grasslands; Kiowa County Including Eads; Bent County Including Las Animas; Prowers County Including Lamar

4. Red Flag Warning for: Larimer County Below 6000 Feet/Northwest Weld County; Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County; North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County; Elbert/Central and East Douglas Counties Above 6000 Feet; Northeast Weld County; Central and South Weld County; Morgan County; Central and East Adams and Arapahoe Counties; Logan County; Washington County; Sedgwick County; Phillips County

5. Red Flag Warning for: North and Northeast Elbert County Below 6000 Feet/North Lincoln County

6. Red Flag Warning for: Northern El Paso County Including Monument and Black Forest; Eastern Las Animas County Including Pinon Canyon; Baca County Including Springfield and Eastern Comanche Grasslands

7. Red Flag Warning for: Southeast Elbert County Below 6000 Feet/South Lincoln County

8. Red Flag Warning for: Yuma; Kit Carson County; Cheyenne; Cheyenne; Rawlins; Decatur; Norton; Sherman; Thomas; Sheridan; Graham; Wallace; Logan; Gove; Greeley; Wichita; Dundy; Hitchcock; Red Willow

9. Winter Weather Advisory for: Elkhead and Park Mountains; Flat Tops

10. Winter Weather Advisory for: West Jackson and West Grand Counties Above 9000 Feet

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle