5-Day Forecast for Franklin, TN

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5-Day Forecast
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More Tools:    Current Time for Franklin, TN    Yesterday's Weather

Units to Use:    °F and mph    °C and km/h    °C and mph (U.K.)

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

contrails Next Topic: Fog

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: Fog

Weather Topic: What are Fractus Clouds?

Home - Education - Cloud Types - Fractus Clouds

fractus clouds Next Topic: Hole Punch Clouds

A fractus cloud (scud) is a fragmented, tattered cloud which has likely been sheared off of another cloud. They are accessory clouds, meaning they develop from parent clouds, and are named in a way which describes the original cloud which contained them.

Fractus clouds which have originated from cumulus clouds are referred to as cumulus fractus, while fractus clouds which have originated from stratus clouds are referred to as stratus fractus. Under certain conditions a fractus cloud might merge with another cloud, or develop into a cumulus cloud, but usually a fractus cloud seen by itself will dissipate rapidly.

They are often observed on the leading and trailing edges of storm clouds, and are a display of wind activity.

Next Topic: Hole Punch Clouds

This page shows the 5-day weather forecast for the following ZIP codes:
37064, 37065, 37067, 37068, 37069, 37084, 37609