Weather Alert in Florida
Freeze Warning issued February 23 at 12:22AM EST until February 24 at 9:00AM EST by NWS Jacksonville FL
AREAS AFFECTED: Suwannee; Union; Bradford; Gilchrist; Inland Flagler; Coastal Nassau; Coastal Duval; Eastern Clay; Eastern Alachua; Eastern Putnam; Coastal Flagler; Eastern Marion; Trout River; Western Clay; Northeast Coastal St. Johns; Western Alachua; Western Putnam; Central Marion; South Central Duval; Southeast Coastal St. Johns; Western Marion; Southeastern Columbia; Western Duval; Northern Inland St. Johns; Southwestern Columbia; Southern Inland St. Johns; Western St. Johns
DESCRIPTION: * WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 23 expected. For the Freeze Warning, sub-freezing temperatures as low as 26 expected. For the second Cold Weather Advisory, very cold wind chills as low as 20 expected. * WHERE...Portions of northeast and northern Florida. * WHEN...For the first Cold Weather Advisory, from 4 AM to 9 AM EST this morning. For the Freeze Warning, from midnight tonight to 9 AM EST Tuesday. For the second Cold Weather Advisory, from 2 AM to 9 AM EST Tuesday. * IMPACTS...The cold wind chills as low as 25 degrees could result in hypothermia or frostbite if precautions are not taken. Wind chill values can lead to hypothermia with prolonged exposure. Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them.
INSTRUCTION: Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. If you do not have heat in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the cold. Take steps now to protect tender plants from the cold.
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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