A deepening low pressure system to our east and high pressure to our
west put Iowa right in the middle on Tuesday.  Here is a listing of
peak wind gusts:

ID    Network   Site                    Gust[MPH]  Min Dewpoint[F]
AMW   ASOS      Ames Airport               69           9
SBOI4 KCCI-TV   United Community / Boone   66          17
SFDI4 KCCI-TV   Fort Dodge                 65          13
OOA   AWOS      Oskaloosa                  63          12
SFAI4 KCCI-TV   Farhamville                63          13
MIW   ASOS      Marshalltown               62          17
SCSI4 KCCI-TV   Creston                    61          11
SLMI4 KCCI-TV   Latimer                    61          18
RMCW  RWIS      Mason City                 61          17
SPEI4 KCCI-TV   Pella                      60          12
SGRI4 KCCI-TV   Grimes                     60          15

I have included a minimum afternoon dew point reading as well.  This
wind event was a part of a tropopause fold or sometimes called a 
stratospheric intrusion.  The referenced URL has a couple of images
provided by the NWS illustrating this event.  You may want to know
what equivalent potential vorticity is before looking at the plot. :)

The low dew points are due to strong downward motion in the 
atmosphere from very dry regions of the upper troposphere.  Other 
than dry air, ozone is also abundant at the surface during these 
events.  A cursory look at a few ozone plots confirms this.

Great stuff! :)