Weather Alert in Louisiana
Red Flag Warning issued February 21 at 9:42PM CST until February 22 at 6:00PM CST by NWS Lake Charles LA
AREAS AFFECTED: Allen; Lafayette; East Cameron; Northern Calcasieu; Northern Jefferson Davis; Northern Acadia; Upper Vermilion; Southern Calcasieu; Southern Jefferson Davis; Southern Acadia; Lower Vermilion
DESCRIPTION: ...Fire weather warning in effect for Sunday... The National Weather Service in Lake Charles has issued a Red Flag Warning for low humidity, gusty winds and dry fuels, which is in effect from 9 AM to 6 PM CST Sunday. * AFFECTED AREA...Fire Weather Zone 031 Allen, Fire Weather Zone 044 Lafayette, Fire Weather Zone 074 East Cameron, Fire Weather Zone 141 Northern Calcasieu, Fire Weather Zone 142 Northern Jefferson Davis, Fire Weather Zone 143 Northern Acadia, Fire Weather Zone 152 Upper Vermilion, Fire Weather Zone 241 Southern Calcasieu, Fire Weather Zone 242 Southern Jefferson Davis, Fire Weather Zone 243 Southern Acadia and Fire Weather Zone 252 Lower Vermilion. * TIMING...From 9 AM to 6 PM CST Sunday. * WINDS...North 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 24 percent. * TEMPERATURES...Up to 59. * LIGHTNING...None. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.
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.
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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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