Weather Alert in Colorado
Fire Weather Watch issued February 14 at 12:07PM MST until February 17 at 8:00PM MST by NWS Goodland KS
AREAS AFFECTED: Cheyenne; Decatur; Thomas; Wallace; Logan; Greeley
DESCRIPTION: For Sunday, southwest winds of 15-25 mph are forecast to begin around 8-9 am Mountain time across Yuma and Kit Carson county before expanding east into the remainder of the Fire Weather Watch through the afternoon. For Tuesday, low relative humidity and sustained winds around 40 mph could lead to explosive fire growth for fires that ignite. Southwest winds could change to west behind a cold front in the afternoon. * AFFECTED AREA...Fire Weather Zones 003 Decatur, 014 Thomas, 027 Wallace, 028 Logan, 041 Greeley and 254 Cheyenne. * TIMING...From Tuesday morning through Tuesday evening. * WINDS...West 30 to 40 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 14 percent. * IMPACTS...Unpredictable fire behavior. Any fires that develop may rapidly grow and spread out of control.
INSTRUCTION: A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible red flag warnings.
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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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