Weather Alert in Arkansas
Special Weather Statement issued February 19 at 1:17AM CST by NWS Little Rock AR
AREAS AFFECTED: Fulton; Sharp; Stone; Izard; Independence; Cleburne; Conway; Faulkner; White; Perry; Garland; Saline; Pulaski; Pike; Clark; Hot Spring; Southeast Van Buren County; Northern Scott County; Northwest Yell County; Polk County Lower Elevations; Central and Eastern Montgomery County; Van Buren County Higher Elevations; Central and Southern Scott County; Yell Excluding Northwest; Northern Polk County Higher Elevations; Northern Montgomery County Higher Elevations; Southeast Polk County Higher Elevations; Southwest Montgomery County Higher Elevations
DESCRIPTION: Expect south to southwesterly winds around 10 to 20 mph by Thursday afternoon with some gusts in excess of 30 mph at times. Very dry air will be located over the area with minimum afternoon RH values between 15 to 30 percent. This will make it possible for wildfires to ignite and spread rapidly. Outdoor burning is not recommended. If a wildfire is observed, report it by dialing 911 or by contacting the Arkansas Forestry Division at (800) 468-8834.
INSTRUCTION: N/A
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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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