Weather Alert in Iowa

Recent Locations: Clarinda, IA

Severe Thunderstorm Watch issued June 26 at 1:44PM CDT until June 26 at 9:00PM CDT by NWS Des Moines IA

AREAS AFFECTED: Adair, IA; Adams, IA; Appanoose, IA; Audubon, IA; Black Hawk, IA; Boone, IA; Bremer, IA; Butler, IA; Carroll, IA; Cass, IA; Cerro Gordo, IA; Clarke, IA; Dallas, IA; Davis, IA; Decatur, IA; Franklin, IA; Greene, IA; Grundy, IA; Guthrie, IA; Hamilton, IA; Hardin, IA; Jasper, IA; Lucas, IA; Madison, IA; Mahaska, IA; Marion, IA; Marshall, IA; Monroe, IA; Polk, IA; Poweshiek, IA; Ringgold, IA; Story, IA; Tama, IA; Taylor, IA; Union, IA; Wapello, IA; Warren, IA; Wayne, IA; Webster, IA; Worth, IA; Wright, IA

DESCRIPTION: THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 465 IN EFFECT UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 41 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN NORTH CENTRAL IOWA BUTLER CERRO GORDO FRANKLIN WORTH WRIGHT IN NORTHEAST IOWA BLACK HAWK BREMER IN SOUTH CENTRAL IOWA APPANOOSE CLARKE DECATUR LUCAS MADISON MAHASKA MARION MONROE RINGGOLD UNION WARREN WAYNE IN SOUTHEAST IOWA DAVIS WAPELLO IN SOUTHWEST IOWA ADAIR ADAMS CASS TAYLOR IN WEST CENTRAL IOWA AUDUBON CARROLL GREENE GUTHRIE THIS INCLUDES THE CITIES OF ACKLEY, ADAIR, ADEL, ALBIA, ALLERTON, ALLISON, AMES, APLINGTON, ATLANTIC, AUDUBON, BAYARD, BEDFORD, BELMOND, BLOOMFIELD, BOONE, CARLISLE, CARROLL, CASEY, CEDAR FALLS, CENTERVILLE, CHARITON, CLARION, CLARKSVILLE, CLEAR LAKE, CONRAD, CORNING, CORYDON, CRESTON, DES MOINES, DIKE, DUMONT, DYSART, EAGLE GROVE, EARLHAM, ELDORA, EXIRA, FONTANELLE, FORT DODGE, GLADBROOK, GREENE, GREENFIELD, GRINNELL, GRUNDY CENTER, GUTHRIE CENTER, HAMPTON, HUMESTON, INDIANOLA, IOWA FALLS, JEFFERSON, KNOXVILLE, LAMONI, LENOX, LEON, MANLY, MARSHALLTOWN, MASON CITY, MOUNT AYR, NEW MARKET, NEWTON, NORTHWOOD, NORWALK, OSCEOLA, OSKALOOSA, OTTUMWA, PANORA, PARKERSBURG, PELLA, PERRY, REINBECK, SEYMOUR, SHELL ROCK, STUART, TAMA, TOLEDO, TRAER, WATERLOO, WAUKEE, WAVERLY, WEBSTER CITY, WELLSBURG, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE. A TORNADO OR TWO POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 20% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : <02% PROB OF 10 OR MORE SEVERE WIND EVENTS : 40% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 20% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 10% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : <05% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 60% MEAN STORM MOTION /MPH/ : NE 35

INSTRUCTION: N/A

View All Alerts for Iowa

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

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

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet