Weather Alert in Iowa

Recent Locations: Lakeside, CA Merton, WI Manning, IA

Tornado Watch issued April 2 at 1:45PM CDT until April 2 at 8:00PM CDT by NWS Des Moines IA

AREAS AFFECTED: Appanoose, IA; Clarke, IA; Davis, IA; Decatur, IA; Jasper, IA; Lucas, IA; Mahaska, IA; Marion, IA; Marshall, IA; Monroe, IA; Polk, IA; Poweshiek, IA; Tama, IA; Wapello, IA; Warren, IA; Wayne, IA

DESCRIPTION: THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 89 IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 16 COUNTIES IN CENTRAL IOWA JASPER MARSHALL POLK POWESHIEK TAMA IN SOUTH CENTRAL IOWA APPANOOSE CLARKE DECATUR LUCAS MAHASKA MARION MONROE WARREN WAYNE IN SOUTHEAST IOWA DAVIS WAPELLO THIS INCLUDES THE CITIES OF ALBIA, ALLERTON, BLOOMFIELD, CARLISLE, CENTERVILLE, CHARITON, CORYDON, DES MOINES, DYSART, GLADBROOK, GRINNELL, HUMESTON, INDIANOLA, KNOXVILLE, LAMONI, LEON, MARSHALLTOWN, NEWTON, NORWALK, OSCEOLA, OSKALOOSA, OTTUMWA, PELLA, SEYMOUR, TAMA, TOLEDO, AND TRAER. * PRIMARY THREATS INCLUDE... A FEW TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES POSSIBLE. SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75 MPH LIKELY. SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 70% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 40% PROB OF 10 OR MORE SEVERE WIND EVENTS : 70% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 60% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 40% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 30% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90% MEAN STORM MOTION /MPH/ : E 40

INSTRUCTION: N/A

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Weather Topic: What is Drizzle?

Home - Education - Precipitation - Drizzle

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

Weather Topic: What is Fog?

Home - Education - Cloud Types - Fog

Fog Next Topic: Fractus Clouds

Fog is technically a type of stratus cloud, which lies along the ground and obscures visibility.

It is usually created when humidity in the air condenses into tiny water droplets. Because of this, some places are more prone to foggy weather, such as regions close to a body of water.

Fog is similar to mist; both are the appearance of water droplets suspended in the air, but fog is the term applied to the condition when visibility is less than 1 km.

Next Topic: Fractus Clouds