I don't live in Iowa, but I spot for an emergency mgr in one county where my families farm is located.
As WX2MIG said, severe weather can happen anywhere in the US - some places just get a lot more than others. "Tornado Alley" sees more than its share - due to seasonal climatic and geographical factors. Cold, dry Canadian air from the northwest comes off of the Rocky Mtns and meets with warm, moist air from the southeast/Gulf of Mexico and meet on the Great Plains. The result is severe weather that ranges from flash flooding, hail, wind storms, lightning, and tornadoes - or combinations of some or all. California and Oregon also get tornadoes yearly, so any of the contiguous US is capable of severe weather that can get to that extreme.
Learning meteorology isn't exactly easy nor hard - although thorough knowledge and study gets one a degree. One can learn enough about storms by studying on the internet and reading books and asking yourself all of the right questions can give one a reasonable understanding. "Skywarn" has a website where one can join and learn about weather and using Ham radios to communicate storm attributes to the National Weather Service. If you live in or around Tornado Alley and are a Ham radio operator, chances are you can volunteer your help and spot storms.
Chasing and spotting storms is very dangerous and experience is necessary to stay safe. If you know someone who is a bona fide chaser, you might ask them if you can come along and share the expenses. Be prepared for them to say 'no' - simply because they don't want to risk anyone's life but their own. It is dangerous business, and one needs to know enough about storms before they should attempt to do it on their own. So - be warned!