Comments on: Earliest Tornado in Minnesota https://gregladen.com/blog/2017/03/08/earliest-tornado-in-minnesota/ Wed, 08 Mar 2017 19:06:46 +0000 hourly 1 https://wordpress.org/?v=6.4.8 By: Bruce Jensen https://gregladen.com/blog/2017/03/08/earliest-tornado-in-minnesota/#comment-458552 Wed, 08 Mar 2017 19:06:46 +0000 http://scienceblogs.com/gregladen/?p=23759#comment-458552 This analysis contains some graphics that might be useful.

https://www.ncdc.noaa.gov/climate-information/extreme-events/us-tornado-climatology/trends

]]> By: Bruce Jensen https://gregladen.com/blog/2017/03/08/earliest-tornado-in-minnesota/#comment-458551 Wed, 08 Mar 2017 19:01:53 +0000 http://scienceblogs.com/gregladen/?p=23759#comment-458551 My reading of this issue, at least historically, has been that while tornadoes may be increasing in intensity and the season may be spreading, the relative frequency of tornadoes may or may not increase – that this last statistic is so far indeterminate. The last discussion I saw of this, perhaps two years ago, suggested that sheer numbers of tornadoes in the Midwest appear to be *very slowly* decreasing over time despite better detection and observation (elsewhere, such as in my own state of CA, the numbers of known tornadoes are rising slightly owing to these same factors).

Regardless – tornadoes are such a fascinating phenomenon that we should continue to get good data of them and good analysis for a long time to come. Stay safe!

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