Weather Alert in Colorado
Red Flag Warning issued February 15 at 10:39PM MST until February 17 at 8:00PM MST by NWS Goodland KS
AREAS AFFECTED: Yuma; Kit Carson County; Cheyenne; Cheyenne; Rawlins; Decatur; Norton; Sherman; Thomas; Sheridan; Graham; Wallace; Logan; Gove; Greeley; Wichita; Dundy; Hitchcock; Red Willow
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. The National Weather Service in Goodland has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 10 AM MST /11 AM CST/ to 8 PM MST /9 PM CST/ Tuesday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 001 Cheyenne, 002 Rawlins, 003 Decatur, 004 Norton, 013 Sherman, 014 Thomas, 015 Sheridan, 016 Graham, 027 Wallace, 028 Logan, 029 Gove, 041 Greeley, 042 Wichita, 079 Dundy, 080 Hitchcock, 081 Red Willow, 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-Southwest 30 to 40 mph with gusts up to 65 mph. * RELATIVE HUMIDITY...Around 10 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 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
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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