Weather Alert in Virginia
Flood Watch issued May 21 at 3:20AM EDT until May 21 at 11:00PM EDT by NWS Baltimore MD/Washington DC
AREAS AFFECTED: Greene; Madison; Rappahannock; Northern Virginia Blue Ridge
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central and northwest Virginia, including the following areas, in central Virginia, Greene. In northwest Virginia, Madison, Northern Virginia Blue Ridge and Rappahannock. * WHEN...Through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - There is an increased potential for flooding given saturated soils from last week's major flooding event. The heaviest rains will likely fall during Wednesday afternoon to early evening. Total amounts of 1 to 2 inches are possible, with locally up to 3 inches if the worst case scenario unfolds. - Please visit weather.gov/safety/flood for flood safety and preparedness information.
INSTRUCTION: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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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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