Weather Alert in Kentucky
Special Weather Statement issued September 6 at 11:25PM EDT by NWS Louisville KY
AREAS AFFECTED: Fayette; Jessamine; Clark; Marion; Boyle; Garrard; Madison; Green; Taylor; Casey; Lincoln; Allen; Barren; Monroe; Metcalfe; Adair; Russell; Cumberland; Clinton
DESCRIPTION: The combination of clearing skies, light winds, and lingering low-level moisture will result in valley fog developing and possibly becoming rather dense overnight. The most extensive fog will be found in the river valleys and over bodies of water. Visibilities may drop below a quarter of a mile in spots. Be sure to slow down and use low-beam headlights if you encounter fog.
INSTRUCTION: N/A
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Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
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: Freezing Rain
Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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