Weather Alert in North Carolina
High Surf Advisory issued August 20 at 7:37PM EDT until August 21 at 8:00PM EDT by NWS Newport/Morehead City NC
AREAS AFFECTED: Coastal Onslow
DESCRIPTION: * WHAT...For the Coastal Flood Warning, 2 to 3 feet of inundation above ground level, with locally higher amounts possible, expected in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, dangerous rip currents in the surf zone. For the High Surf Advisory, large breaking waves of 6 to 12 feet expected in the surf zone. * WHERE...Oceanside coastal Onslow County. * WHEN...For the Beach Hazards Statement, through Thursday evening. For the Coastal Flood Warning, until 8 PM EDT Thursday. For the High Surf Advisory, until 8 PM EDT Thursday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Shoreline erosion will occur. Dangerous swimming and surfing conditions with significant beach erosion. * ADDITIONAL DETAILS...This is expected to be a prolonged duration event, with the potential for roads along the immediate coast to be impassable at times, especially around times of high tide. The area of greatest concern for oceanside impacts is North Topsail Beach.
INSTRUCTION: Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Life-threatening rip currents. If caught in a rip current, remain calm. Swim in a direction following the shoreline. If tired, float or tread water until out of the rip current. If unable to escape, face the shore and call or wave for help.
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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
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