Chase tours are a great way to (ideally) be guided out into the field by an experienced chaser. The downside is you can expect to pay in the thousands for a week of chasing, but you'll get to sit back and relax and not worry about the tough decisions.
Here are some in no particular order:
*
Cloud 9 Tours, run by Charles Edwards
*
StormTours of Minnesota, guided by Twister Sisters Peggy Willenberg and Melanie Metz
*
Silver Lining Tours run by David Gold and Roger Hill.
*
Tempest Tours with Martin Lisius, Bill Reid, Brian Morganti, Dean Cosgrove, and Chuck Doswell
*
Warren Faidley at $6500/wk may sting your wallet, but for some it may be better than a crowded van.
There are certainly others that I may have overlooked. There are also a few out there that are quite shady and I would NOT recommend.
Some things to look for: check the resumes of the tour operators. They should be open and honest about their background and experience. Their websites should be packed with solid information and not leave you scratching your head. Check around with other chasers to find out about the track records of tour operators. You can do that here on Stormtrack. Also look for others who have chased with the tour operators, and see if they have a reputation for being safe, helpful, and friendly even in the heat of a chase. A zeal for educating guests is a plus. Also you may want to feel around to see if you'd like a loud, lively tour or a mellow, reflective one -- different tour companies do have different personalities, and you don't want to be immersed in the wrong one!
Also be prepared for a lot of boredom sitting in the vehicle. Chase tours will not deliver action by the hour. It's not uncommon to drive all day for 500 miles under clear skies to get to the next day's target area. Also "down days" are common and can extend into weeks if a big ridge builds into the area. This can be a major disappointment. So plan for these down days. All tour companies maintain a plan for down days -- check around and see if they do things that you enjoy doing, or if they offer rest and relaxation if that's what you want.
If you don't have the dough, you can sometimes hook up with other chasers here as long as you split expenses. If you show a firm commitment, flexibility, and have educated yourself on the basics of chasing, you'll be a step ahead in finding a partner.
Tim