Weather Alert in Iowa
Tornado Watch issued March 6 at 3:17PM CST until March 6 at 10:00PM CST by NWS Des Moines IA
AREAS AFFECTED: Adair, IA; Adams, IA; Audubon, IA; Boone, IA; Calhoun, IA; Carroll, IA; Cass, IA; Clarke, IA; Dallas, IA; Decatur, IA; Greene, IA; Guthrie, IA; Hamilton, IA; Madison, IA; Polk, IA; Ringgold, IA; Story, IA; Taylor, IA; Union, IA; Warren, IA; Webster, IA
DESCRIPTION: THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 16 IN EFFECT UNTIL 10 PM CST THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 21 COUNTIES IN CENTRAL IOWA BOONE DALLAS HAMILTON POLK STORY WEBSTER IN SOUTH CENTRAL IOWA CLARKE DECATUR MADISON RINGGOLD UNION WARREN IN SOUTHWEST IOWA ADAIR ADAMS CASS TAYLOR IN WEST CENTRAL IOWA AUDUBON CALHOUN CARROLL GREENE GUTHRIE THIS INCLUDES THE CITIES OF ADAIR, ADEL, AMES, ATLANTIC, AUDUBON, BAYARD, BEDFORD, BOONE, CARLISLE, CARROLL, CASEY, CORNING, CRESTON, DES MOINES, EARLHAM, EXIRA, FONTANELLE, FORT DODGE, GREENFIELD, GUTHRIE CENTER, INDIANOLA, JEFFERSON, LAKE CITY, LAMONI, LENOX, LEON, MANSON, MOUNT AYR, NEW MARKET, NORWALK, OSCEOLA, PANORA, PERRY, POMEROY, ROCKWELL CITY, STUART, WAUKEE, WEBSTER CITY, AND WINTERSET. * PRIMARY THREATS INCLUDE... A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE. SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 50% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 30% PROB OF 10 OR MORE SEVERE WIND EVENTS : 40% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 10% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 60% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 50% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90% MEAN STORM MOTION /MPH/ : NE 35
INSTRUCTION: N/A
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Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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