Weather Alert in Iowa
Tornado Watch issued March 7 at 12:01AM CST until March 7 at 4:00AM CST by NWS Des Moines IA
AREAS AFFECTED: Appanoose, IA; Black Hawk, IA; Davis, IA; Jasper, IA; Lucas, IA; Mahaska, IA; Marion, IA; Monroe, IA; Poweshiek, IA; Tama, IA; Wapello, IA; Wayne, IA
DESCRIPTION: TORNADO WATCH 19 REMAINS VALID UNTIL 4 AM CST EARLY THIS MORNING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 12 COUNTIES IN CENTRAL IOWA JASPER POWESHIEK TAMA IN NORTHEAST IOWA BLACK HAWK IN SOUTH CENTRAL IOWA APPANOOSE LUCAS MAHASKA MARION MONROE WAYNE IN SOUTHEAST IOWA DAVIS WAPELLO THIS INCLUDES THE CITIES OF ALBIA, ALLERTON, BLOOMFIELD, CEDAR FALLS, CENTERVILLE, CHARITON, CORYDON, DYSART, GLADBROOK, GRINNELL, HUMESTON, KNOXVILLE, NEWTON, OSKALOOSA, OTTUMWA, PELLA, SEYMOUR, TAMA, TOLEDO, TRAER, AND WATERLOO. * PRIMARY THREATS INCLUDE... A FEW TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES POSSIBLE. SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER LIKELY. SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY.
INSTRUCTION: N/A
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Weather Topic: What is Evaporation?
Home - Education - Precipitation - Evaporation
Next Topic: Fog
Evaporation is the process which returns water from the earth
back to the atmosphere, and is another crucial process in the water cycle.
Evaporation is the transformation of liquid into gas, and it happens because
molecules are excited by the application of energy and turn into vapor.
In order for water to evaporate it has to be on the surface of a body of water.
Next Topic: Fog
Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
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