A strong upper level trough lifted northeast from the southwest U.S. with the surface moving from central Nebraska at mid afternoon, and into eastern South Dakota by the early morning hours of the 24th.  Very strong dynamics were in place as far as the low level jet near 65 kts being  in place, and mid level flow in the 80 to 90 kt range.  Instability was marginal with most unstable CAPE around 500 J/kg and available cape in the -10 to -30 C layer of the atmosphere in the 100 to 200 J/kg range.  The shear was strong with 35 to 50 kts available.  The LCL was relatively low at only 500 to 1000 meters.  A strong surge of moisture pushed into the state in advance of the approaching low with precipitable water values over an inch.  A line of thunderstorms developed in Nebraska and advanced east into Iowa.  Strong surface winds developed ahead of the line.  Although most of the storms were not all that strong, the antecedent winds were not that far below severe levels.  A few of the storms were able to mix into the boundary layer and produce strong winds.  A few gusts of 60 to 65 MPH were recorded.  High winds turned a mobile home on its side and downed power lines in Adams County.  Part of the roof was blown off of a home as well there.  High winds also tore part of a roof off of a building in Adair County at Adair and took the canopy off of a gas station.  As the storms moved through Dallas County, winds blew a barn off of its foundation in Dallas Center.  Only one storm produced severe hail, though many produced pea size hail.  Two small tornadoes touched down in Cass County southwest and north of Cumberland.  The first was on the ground for several miles and caused damage in several places with grain bins destroyed, an anhydrous tank was flopped and leaking, trees and outbuildings were also toppled.  The second was a brief touchdown and resulted in little damage south of Wiota.

Tornado in CASS, IOWA
From 23-MAR-09 19:10:00 to 23-MAR-09 19:16:00 (CST-6)
Location: CUMBERLAND
Tornado F-scale: EF0
Property damage: 250.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several farms had damage to grain bins, out buildings, trees, and powerlines.  Track was intermittent.

Hail in TAYLOR, IOWA
From 23-MAR-09 19:32:00 to 23-MAR-09 19:32:00 (CST-6)
Location: GRAVITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in CRAWFORD, IOWA
From 23-MAR-09 18:46:00 to 23-MAR-09 18:46:00 (CST-6)
Location: DENISON
Magnitude: 56.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in ADAMS, IOWA
From 23-MAR-09 19:32:00 to 23-MAR-09 19:32:00 (CST-6)
Location: CARBON
Magnitude: 57.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A motor home has been blown on its side, with part of a roof blown off a house. Power poles were blown down, with all the debris lying off to the northeast.

Thunderstorm Wind in EMMET, IOWA
From 23-MAR-09 21:18:00 to 23-MAR-09 21:18:00 (CST-6)
Location: ESTHERVILLE ARPT
Magnitude: 54.00 MG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in DALLAS, IOWA
From 23-MAR-09 20:56:00 to 23-MAR-09 20:56:00 (CST-6)
Location: DALLAS CENTER
Magnitude: 57.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

A barn was blown off of its foundation.  Reported from the KCCI TV website.

Thunderstorm Wind in ADAIR, IOWA
From 23-MAR-09 20:04:00 to 23-MAR-09 20:04:00 (CST-6)
Location: ADAIR
Magnitude: 57.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A roof was blown off a restaurant and a canopy of a gas station was destroyed.

Tornado in CASS, IOWA
From 23-MAR-09 19:23:00 to 23-MAR-09 19:24:00 (CST-6)
Location: NORWAY CENTER
Tornado F-scale: EF0
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Minor damage occurred to outbuildings.

Thunderstorm Wind in KOSSUTH, IOWA
From 23-MAR-09 20:38:00 to 23-MAR-09 20:38:00 (CST-6)
Location: ALGONA
Magnitude: 56.00 MG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Mesonet