Weather Alert in Colorado
Red Flag Warning issued February 16 at 1:45PM MST until February 17 at 8:00PM MST by NWS Goodland KS
AREAS AFFECTED: Yuma; Kit Carson County; Cheyenne; Cheyenne; Rawlins; Sherman; Wallace; Greeley; Dundy; Hitchcock
DESCRIPTION: For Tuesday, low relative humidity and sustained winds around 40 mph will lead to extreme fire spread for any fires that ignite. Southwest winds will change to west behind a cold front in the afternoon. Blowing dust may also occur near open fields or other source regions causing reductions in visibility and poor air quality. * AFFECTED AREA...THIS IS A PARTICULARLY DANGEROUS SITUATION FOR Fire Weather Zones 001 Cheyenne, 002 Rawlins, 013 Sherman, 027 Wallace, 041 Greeley, 079 Dundy, 080 Hitchcock, 252 Yuma, 253 Kit Carson and 254 Cheyenne. * TIMING...From 10 AM MST /11 AM CST/ to 8 PM MST /9 PM CST/ Tuesday. * WINDS...West 35 to 45 mph with gusts up to 65 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Extremely dangerous and erratic fire behavior. Any fires that develop will rapidly grow and spread out of control.
INSTRUCTION: Comply with burn bans and regulations. Avoid driving on dry grass or brush. Maintain vehicle brakes and tires and secure tow chains to avoid dragging. Never toss lit cigarettes onto the ground. Evacuate if fire/smoke is heading your way, or if ordered to do so by local officials.
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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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