Weather Alert in Virginia
Flood Watch issued May 13 at 4:18AM EDT until May 14 at 2:00AM EDT by NWS Baltimore MD/Washington DC
AREAS AFFECTED: Augusta; Rockingham; Shenandoah; Page; Warren; Nelson; Albemarle; Greene; Madison; Rappahannock; Western Highland; Eastern Highland; Northern Virginia Blue Ridge; Central Virginia Blue Ridge; Hardy; Western Grant; Eastern Grant; Western Pendleton; Eastern Pendleton
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Virginia, including the following areas, Albemarle, Augusta, Central Virginia Blue Ridge, Eastern Highland, Greene, Madison, Nelson, Northern Virginia Blue Ridge, Page, Rappahannock, Rockingham, Shenandoah, Warren and Western Highland and eastern West Virginia, including the following areas, Eastern Grant, Eastern Pendleton, Hardy, Western Grant and Western Pendleton. * WHEN...Through late tonight. * IMPACTS...Excessive runoff may result in flooding of creeks, streams, and other low-lying and flood-prone locations. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - A prolonged period of moderate to heavy rain showers with embedded thunderstorms is expected through this evening. Rainfall amounts of 2 to 4 inches are likely, with locally higher amounts possible along the eastern slopes of the Blue Ridge and Allegheny Mountains. This rainfall may lead to scattered instances of flooding. - Please visit www.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 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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