Weather Alert in North Carolina
Flood Watch issued August 11 at 9:01AM EDT until August 11 at 8:00PM EDT by NWS Wilmington NC
AREAS AFFECTED: Columbus; Inland New Hanover; Coastal New Hanover; Inland Brunswick; Coastal Brunswick; Williamsburg; Coastal Horry; Inland Georgetown; Coastal Georgetown; Central Horry; Northern Horry
DESCRIPTION: * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southeast North Carolina, including the following areas, Coastal Brunswick, Coastal New Hanover, Columbus, Inland Brunswick and Inland New Hanover and northeast South Carolina, including the following areas, Central Horry, Coastal Georgetown, Coastal Horry, Inland Georgetown, Northern Horry and Williamsburg. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone urban locations. * ADDITIONAL DETAILS... - The area has already received a surplus of rain during the past week. As a result, additional heavy rain on saturated grounds will have a greater potential to produce flash flooding. - weather.gov/safety/flood
INSTRUCTION: N/A
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Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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
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