Weather Alert in Iowa
Red Flag Warning issued March 27 at 11:52AM CDT until March 28 at 9:00PM CDT by NWS Des Moines IA
AREAS AFFECTED: Sac; Calhoun; Webster; Hamilton; Boone; Story; Jasper; Marion; Mahaska; Monroe; Wapello; Appanoose; Davis
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 PORTIONS OF NORTH CENTRAL TO SOUTHEASTERN IOWA... The National Weather Service in Des Moines has issued a Red Flag Warning, which is in effect until 9 PM CDT this evening. A Red Flag Warning has also been issued from 10 AM to 9 PM CDT Saturday. The Fire Weather Watch is no longer in effect. * 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 Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
Weather Topic: What is Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
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