Weather Alert in Colorado
Red Flag Warning issued March 19 at 2:16AM MDT until March 19 at 7:00PM MDT by NWS Denver CO
AREAS AFFECTED: Larimer County Below 6000 Feet/Northwest Weld County; Northeast Weld County
DESCRIPTION: ...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR AREAS NEAR THE CHEYENNE RIDGE...FIRE ZONES 238 AND 242... ..FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS...FIRE ZONES 238, 239, 240, 242, 243, 244, 245, 248, 249, 250 AND 251. The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Friday morning through Friday evening. A Fire Weather Watch has also been issued from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the Red Flag Warning, from 11 AM this morning to 7 PM MDT this evening. For the first Fire Weather Watch, from Friday morning through Friday evening. For the second Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 30 mph today and again on Friday. For Saturday, west winds 15 to 25 mph with gusts to 40 mph. * RELATIVE HUMIDITY...As low as 7 percent all three days. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. 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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