Weather Alert in Colorado
Fire Weather Watch issued February 13 at 12:30PM MST until February 17 at 8:00PM MST by NWS Denver CO
AREAS AFFECTED: Larimer and Boulder Counties Between 6000 and 9000 Feet; Larimer County Below 6000 Feet/Northwest Weld County; Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County; Northeast Weld County; Central and South Weld County; Logan County; Sedgwick County; Phillips County
DESCRIPTION: ...PROLONGED PERIOD OF CRITICAL FIRE WEATHER CONDITIONS EARLY TO MID NEXT WEEK... .Recent dry conditions combining with above normal temperatures and much stronger winds early next week will bring potentially critical fire weather conditions Monday and Tuesday, possibly lasting into Wednesday. There is potential for extreme fire weather conditions on Tuesday as widespread strong and gusty winds to around 60 mph are expected. The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Tuesday morning through Tuesday evening. * AFFECTED AREA...Fire Weather Zones 215, 238, 239, 242, 243, 248, 250 and 251. * TIMING...From Tuesday morning through Tuesday evening. * WINDS...West 30 to 40 mph with gusts around 60 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. There is potential for extreme fire weather conditions on Tuesday.
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 Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
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