Weather Alert in Iowa
Red Flag Warning issued March 27 at 11:52AM CDT until March 27 at 9:00PM CDT by NWS Des Moines IA
AREAS AFFECTED: Crawford; Carroll; Greene; Audubon; Guthrie; Dallas; Polk; Cass; Adair; Madison; Warren; Adams; Union; Clarke; Lucas; Taylor; Ringgold; Decatur; Wayne
DESCRIPTION: ...Critical Fire Weather Conditions Expected Today and Saturday... .Breezy northwest winds, along with cured fuels and low RH values in the 20s, especially over southern and much of central Iowa this afternoon to evening will lead to critical fire weather conditions. Saturday will feature even gustier winds out of the southwest, along with lower RH values, warming temperatures and dry fuels, leading to continued critical fire weather conditions. Burning is not recommended. ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 9 PM CDT SATURDAY FOR CRITICAL FIRE WEATHER CONDITIONS FOR SOUTHWEST TO WEST CENTRAL IOWA... The National Weather Service in Des Moines has issued a Red Flag Warning, which is in effect from 10 AM to 9 PM CDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Parts of southwest to west central Iowa. * WIND...For Today, Northwest winds at 10-15 mph, gusting to 20-30 mph. For Saturday, Southwest winds at 20-25 mph, gusting to 30-40 mph. * HUMIDITY...For Today, minimum values of 20-25 percent. For Saturday, minimum values of around 15 percent. * IMPACTS...Any fires that develop will likely spread rapidly. 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 are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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
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