Weather Alert in Colorado
Dense Fog Advisory issued March 2 at 10:32PM MST until March 3 at 11:00AM MST by NWS Goodland KS
AREAS AFFECTED: Yuma County; Kit Carson County; Cheyenne County; Cheyenne; Rawlins; Decatur; Norton; Sherman; Thomas; Sheridan; Graham; Wallace; Logan; Gove; Greeley; Wichita; Dundy; Hitchcock; Red Willow
DESCRIPTION: * WHAT...Visibility one quarter mile or less in dense fog. Patches of freezing fog may lead to slick surfaces. * WHERE...Portions of east central and northeast Colorado, northwest and west central Kansas, and southwest Nebraska. * WHEN...Until 11 AM MST /noon CST/ Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous. Roads, especially bridges and overpasses, may become slick and hazardous.
INSTRUCTION: If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Sidewalks, porches, steps, and driveways may become slippery. Pedestrians should use caution when moving about. Freezing fog can create a thin layer of ice on exposed surfaces. The combination of low visibility and slick conditions may make traveling hazardous. If you must travel, use extreme caution!
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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
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