Weather Alert in Colorado
Fire Weather Watch issued March 20 at 2:53AM MDT until March 21 at 10:00PM MDT by NWS Denver CO
AREAS AFFECTED: Jackson County Below 9000 Feet; Grand and Summit Counties Below 9000 Feet
DESCRIPTION: ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.
INSTRUCTION: A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
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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
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