Weather Alerts for Colorado

Recent Locations: Sunnyvale, CA Hayward, CA Fort Collins, CO

Current Alerts for Fort Collins, CO: Avalanche Warning Fire Weather Watch
Red Flag Warning Winter Storm Warning

1. Avalanche Warning for: Elkhead and Park Mountains; West Jackson and West Grand Counties Above 9000 Feet; South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet

2. Fire Weather Watch for: Fremont County Including Canon City/Howard/Texas Creek

3. Fire Weather Watch 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; Northeast Weld County; Central and South Weld County; Morgan County; Central and East Adams and Arapahoe Counties; North and Northeast Elbert County Below 6000 Feet/North Lincoln County; Logan County; Washington County; Sedgwick County; Phillips County

4. Fire Weather Watch for: Pueblo County Including Pueblo; Huerfano County Including Walsenburg; Western Las Animas County Including Trinidad and Thatcher

5. Red Flag Warning for: Elbert/Central and East Douglas Counties Above 6000 Feet; Southeast Elbert County Below 6000 Feet/South Lincoln County

6. 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; Northeast Weld County; Central and South Weld County; Morgan County; Central and East Adams and Arapahoe Counties; North and Northeast Elbert County Below 6000 Feet/North Lincoln County; Logan County; Washington County; Sedgwick County; Phillips County

7. Red Flag Warning for: Northern El Paso County Including Monument and Black Forest; Southern El Paso County Including Fort Carson and Colorado Springs; Crowley County Including Ordway; Otero County Including La Junta and Western Comanche Grasslands; Eastern Las Animas County Including Pinon Canyon

8. Red Flag Warning for: Pueblo County Including Pueblo; Huerfano County Including Walsenburg; Western Las Animas County Including Trinidad and Thatcher

9. Red Flag Warning for: Yuma; Kit Carson County; Cheyenne; Cheyenne; Sherman; Dundy; Hitchcock; Red Willow

10. Winter Storm Warning for: Elkhead and Park Mountains

11. Winter Storm Warning for: South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet

12. Winter Storm Warning for: West Jackson and West Grand Counties Above 9000 Feet

13. Winter Weather Advisory for: Gore and Elk Mountains/Central Mountain Valleys; Flat Tops

14. Winter Weather Advisory for: South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet

15. Winter Weather Advisory for: Western Mosquito Range/East Lake County Above 11000 Ft; Eastern Sawatch Mountains above 11000 Ft

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

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