Weather Alert in Virginia
Heat Advisory issued June 23 at 2:16AM EDT until June 24 at 10:00AM EDT by NWS Wakefield VA
AREAS AFFECTED: Fluvanna; Prince Edward; Cumberland; Mecklenburg; Lunenburg; Nottoway; Western Louisa
DESCRIPTION: * WHAT...For the Heat Advisory, heat index values of 105 to 109 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values of 110 or greater possible. * WHERE...Cumberland, Fluvanna, Prince Edward, Western Louisa, Lunenburg, Mecklenburg, and Nottoway Counties. * WHEN...For the Heat Advisory, from 10 AM this morning to 10 AM EDT Tuesday. For the Extreme Heat Watch, from Tuesday morning through Wednesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.
INSTRUCTION: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
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Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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