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Junorch obs and discussion 2026


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IL had 20+ tornado reports yesterday, and the state is now over 190 for the year (*reports*, not actual tornadoes, there are duplicate reports in this total).
 
Attached is a map for the bigger state totals through 6/19.  The disparity is amazing.  Why IL only so much more?  It's not like when an area is soaked or buried repeatedly w/ rain/snow.  That is more on the synoptic level and areal coverage is larger.  When you get down to a local level, such as an area that is about avg size for a U.S. state, that's not the same for scale.  And to get tornadoes, it is a lot more conditional (harder) than say a lot of heavy rain or snow over an extended period (CoastalWx would disagree about the heavy snow!). :P
 
But given the vagaries of the atmosphere/patterns and given enough time, you are going to see things due to the law of large numbers and averages.  Just pointing this out b/c some try to assign a specific meaning or cause, where sometimes there is none.
 
Yes, I know of the hypothesis that tornado alley is shifting E, but we really do not have enough solid data IMHO.  Tornadoes, esp. weak and short-lived ones, were severely under-counted prior to the 1990s since storm chasing was not yet mainstream, WSR-88Ds did not exist for operational use, nor did the Internet (at least in widespread use).  ~35 years of data is not enough time to establish a trend either way.  I would argue that it wasn't until 2010 or so when we started to get close to actual number of tornadoes that occur every year in the U.S. w/ the  advent of the smartphone and dual-polarization radar.
 
 

torstate.jpg

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1 hour ago, vortex95 said:
IL had 20+ tornado reports yesterday, and the state is now over 190 for the year (*reports*, not actual tornadoes, there are duplicate reports in this total).
 
Attached is a map for the bigger state totals through 6/19.  The disparity is amazing.  Why IL only so much more?  It's not like when an area is soaked or buried repeatedly w/ rain/snow.  That is more on the synoptic level and areal coverage is larger.  When you get down to a local level, such as an area that is about avg size for a U.S. state, that's not the same for scale.  And to get tornadoes, it is a lot more conditional (harder) than say a lot of heavy rain or snow over an extended period (CoastalWx would disagree about the heavy snow!). :P
 
But given the vagaries of the atmosphere/patterns and given enough time, you are going to see things due to the law of large numbers and averages.  Just pointing this out b/c some try to assign a specific meaning or cause, where sometimes there is none.
 
Yes, I know of the hypothesis that tornado alley is shifting E, but we really do not have enough solid data IMHO.  Tornadoes, esp. weak and short-lived ones, were severely under-counted prior to the 1990s since storm chasing was not yet mainstream, WSR-88Ds did not exist for operational use, nor did the Internet (at least in widespread use).  ~35 years of data is not enough time to establish a trend either way.  I would argue that it wasn't until 2010 or so when we started to get close to actual number of tornadoes that occur every year in the U.S. w/ the  advent of the smartphone and dual-polarization radar.
 
 

torstate.jpg

That is a pretty amazing disparity. I hope an angry God isn’t the cause. Ha

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3 minutes ago, CoastalWx said:

Haven't you had enough rain?

After last summer keep it coming.

I fertilized and put compost around the fruit trees this morning so I want it drenched in. There's no fungi or water in the basement yet so we good.

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1 hour ago, vortex95 said:
IL had 20+ tornado reports yesterday, and the state is now over 190 for the year (*reports*, not actual tornadoes, there are duplicate reports in this total).
 
Attached is a map for the bigger state totals through 6/19.  The disparity is amazing.  Why IL only so much more?  It's not like when an area is soaked or buried repeatedly w/ rain/snow.  That is more on the synoptic level and areal coverage is larger.  When you get down to a local level, such as an area that is about avg size for a U.S. state, that's not the same for scale.  And to get tornadoes, it is a lot more conditional (harder) than say a lot of heavy rain or snow over an extended period (CoastalWx would disagree about the heavy snow!). :P
 
But given the vagaries of the atmosphere/patterns and given enough time, you are going to see things due to the law of large numbers and averages.  Just pointing this out b/c some try to assign a specific meaning or cause, where sometimes there is none.
 
Yes, I know of the hypothesis that tornado alley is shifting E, but we really do not have enough solid data IMHO.  Tornadoes, esp. weak and short-lived ones, were severely under-counted prior to the 1990s since storm chasing was not yet mainstream, WSR-88Ds did not exist for operational use, nor did the Internet (at least in widespread use).  ~35 years of data is not enough time to establish a trend either way.  I would argue that it wasn't until 2010 or so when we started to get close to actual number of tornadoes that occur every year in the U.S. w/ the  advent of the smartphone and dual-polarization radar.
 
 

torstate.jpg

Wouldn't they have been under counted in Oklahoma as well?

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2 minutes ago, kdxken said:

Wouldn't they have been under counted in Oklahoma as well?

Yes, all states under-counted a lot prior to the 1990s.  Once the NWS Modernization and Restructuring occurred in the 90s, detection or documentation of tornadoes improved considerably.

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20 minutes ago, vortex95 said:

Yes, all states under-counted a lot prior to the 1990s.  Once the NWS Modernization and Restructuring occurred in the 90s, detection or documentation of tornadoes improved considerably.

So all states would be skewed in the same manner pretty much right? How would that data be invalid for hypothesizing about a movement east of tornado Alley?

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