Weather Alert in Iowa

Recent Locations: Dover, GA Pine Island, NY Inwood, IA

Current Alerts for Inwood, IA: Air Quality Alert

Air Quality Alert issued August 1 at 12:38PM CDT by NWS Des Moines IA

AREAS AFFECTED: Lyon; Osceola; Dickinson; Emmet; Kossuth; Winnebago; Worth; Mitchell; Howard; Winneshiek; Allamakee; Sioux; O'Brien; Clay; Palo Alto; Hancock; Cerro Gordo; Floyd; Chickasaw; Plymouth; Cherokee; Buena Vista; Pocahontas; Humboldt; Wright; Franklin; Butler; Bremer; Fayette; Clayton; Woodbury; Ida; Sac; Calhoun; Webster; Hamilton; Hardin; Grundy; Black Hawk; Buchanan; Delaware; Dubuque; Monona; Crawford; Carroll; Greene; Boone; Story; Marshall; Tama; Benton; Linn; Jones; Jackson; Harrison; Shelby; Audubon; Guthrie; Dallas; Polk; Jasper; Poweshiek; Iowa; Johnson; Cedar; Clinton; Muscatine; Scott; Pottawattamie; Cass; Adair; Madison; Warren; Marion; Mahaska; Keokuk; Washington; Louisa; Mills; Montgomery; Adams; Union; Clarke; Lucas; Monroe; Wapello; Jefferson; Henry; Des Moines; Fremont; Page; Taylor; Ringgold; Decatur; Wayne; Appanoose; Davis; Van Buren; Lee

DESCRIPTION: The Iowa DNR is extending the Air Quality Alert for all of Iowa through 8 AM Sunday. Moderate to heavy smoke is expected to continue impacting most of Iowa at levels considered unhealthy for sensitive groups or even unhealthy for healthy individuals. Sensitive groups include people with respiratory illness or heart disease, children, teenagers, the elderly, and outdoor workers. The DNR recommends that people avoid long or intense outdoor activities and take frequent breaks until the air quality improves.

INSTRUCTION: N/A

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Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds