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Severe Weather Threat 4/27-4/28, 2024 - (Saturday, Sunday)

Additional TOR east of the supercell conveyor belt.
1714281685968.png
 
Shakespeare 2016 said:
Okay, but there have been times where tornado emergencies have been issued for smaller towns.
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It's subjective from office to office based on individual WFO philosophy. They're also more likely to go emergency for smaller towns or rural areas if they believe the tornado may be full-on violent EF4-EF5, as opposed to more likely "just" EF3 but possibly stronger.
 
TOG near Morris, per EMA.
1714281876317.png
 
Fred Gossage said:
It's subjective from office to office based on individual WFO philosophy. They're also more likely to go emergency for smaller towns or rural areas if they believe the tornado may be full-on violent EF4-EF5, as opposed to more likely "just" EF3 but possibly stronger.
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I am no meteorologist but how can you tell something on radar is just an EF3 tornado or stronger vs an EF4 or EF5?
 
Velocity has been going kind of haywire on KTLX, so it's hard to make things out, though this couplet remains and is visible.
1714282209092.png
 
Shakespeare 2016 said:
I am no meteorologist but how can you tell something on radar is just an EF3 tornado or stronger vs an EF4 or EF5?
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You can't for sure, but you have a higher confidence in the tornado being EF4+ if you have things like we saw in the Omaha metro yesterday.... delta-v over 200+ mph only hundreds of feet above ground, debris 20-25,000 ft aloft and higher, a TBSS coming from a debris ball, etc., etc.
 
Fred Gossage said:
You can't for sure, but you have a higher confidence in the tornado being EF4+ if you have things like we saw in the Omaha metro yesterday.... delta-v over 200+ mph only hundreds of feet above ground, debris 20-25,000 ft aloft and higher, a TBSS coming from a debris ball, etc., etc.
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I heard some places today had debris balls over 25,000 to 30,000 feet high. Though I can't know for sure but I do feel pretty confident that violent tornado damage did occur somewhere today. Maybe a PDS vs a Tornado Emergency may also vary from each NWS office.
 
Clancy said:
Velocity has been going kind of haywire on KTLX, so it's hard to make things out, though this couplet remains and is visible.
View attachment 26014
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Yeah, not sure what's up with the velocity on KTLX. I've been having to use the Durant radar and KCRI. I presume you can also get KCRI with Gibson Ridge products?
 
There is a User Defined Product call TDS Height to EF Scale shader for GR2A. I'm not sure they using that or not.

The shader isn't trying to give a fine-grained EF scale but rather shows where in the EF violins the height falls
 
Shakespeare 2016 said:
I heard some places today had debris balls over 25,000 to 30,000 feet high. Though I can't know for sure but I do feel pretty confident that violent tornado damage did occur somewhere today. Maybe a PDS vs a Tornado Emergency may also vary from each NWS office.
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Yes, and that's what I was talking about with there being differences in office philosophy. It's all subjective without any hard "yes or no" lines drawn anywhere in NWS directive.
 
Evan said:
Yeah, not sure what's up with the velocity on KTLX. I've been having to use the Durant radar and KCRI. I presume you can also get KCRI with Gibson Ridge products?
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Indeed, though KTLX's range is just quite nice.
 
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