Storm Highway by Dan Robinson
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                   Sunday, May 3, 2015

Storm chasing forecast update for May 3

By DAN ROBINSON
Editor/Photographer
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From Dan: How the crime of copyright infringement took $1 million from me and shut down my operation.

In September of 2025, my work is generating the most income it ever has in my career. Yet, I'm being forced to shut down my successul operation, against my will, due to one cause alone: 95% of that revenue is being stolen by piracy and copyright infringement. I've lost more than $1 million to copyright infringement in the last 15 years, and it's finally brought an end to my professional storm chasing operation. Do not be misled by the lies of infringers, anti-copyright activists and organized piracy cartels. This page is a detailed, evidenced account of my battle I had to undertake to just barely stay in business, and eventually could not overcome. It's a problem faced by all of my colleagues and most other creators in the field.

We're now getting into the heart of the spring Great Plains tornado season. While there aren't any big outbreaks indicated on the horizon, I think the conditions will be favorable for a few isolated tornadic supercell events here and there over the Plains. A general western troughing pattern, southwesterly flow aloft and deep moisture should all be in place over the Plains toward the end of the week. Here's the 500mb pattern shown for Thursday:

The main drawback I can see with this upcoming pattern is weaker-than-usual capping. That could mean too many storms firing too early. Even so, it looks like we'll see a string of multiple 5% tornado risk type days (on SPC outlooks). Despite the lack of a moderate/high risk type outbreak being evident, a pattern like this can indeed produce some great events. You don't need an outbreak or maxed-out parameters to have a good tornado intercept - Bennington and Rozel days in 2013 are examples. And with a trough in place, all that is needed for an 'outbreak' scenario is a little impulse in the flow showing up at the right time.

Since the upcoming setups aren't so clear cut, I will likely not make a decision to chase any of these days until the last minute. However, I'm fairly optimistic that at my first Plains storm chase expedition of the season will probably happen later this week. Stay tuned!

The following table charts the probability of a Great Plains storm chase expedition happening for several indicated date ranges in the near future:

2015 Plains Storm Expeditions - Probabilities as of May 3
May 4-620%
May 7-1070%

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