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Severe Event March 25th 2021


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20 minutes ago, Moderately Unstable said:

So, it's difficult to tell, but what you can see on the radar is the *orientation* of the couplet changes. In a handoff, you see two distinct mesos, one weakens, the other strengthens. Here, we have the same meso which was "oriented" "up down" and after passing the radar is now "left right". That's the same circulation. The doppler effect only shows motion towards and away from the radar. Ergo, as you translate around a radar site, the orientation of the couplet can shift as the storm motion is captured in the non-storm-relative base reflectivity with a different relative motion (given a different angle of incidence to the site). Same tornado folks. In fairness, there was one single scan that looked "confusing", so if you just looked then you could go "hm what's going on", but subsequent scans, and playing them back with the prior ones, tell us the whole story. 

Great post. Obviously the survey will tell the whole story, but this a great analysis of the radar representation. 

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Just now, SmokeEater said:

Uh yea, they need to warn that.

Sent from my SM-G973U using Tapatalk
 

I seem to recall not warning tornadoes being an issue for that office? Maybe another? Feels like this discussion has been had before

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Just now, cheese007 said:

I seem to recall not warning tornadoes being an issue for that office? Maybe another? Feels like this discussion has been had before

We’ve definitely had that discussion about this office in Peachtree City. That are notoriously pretty stingy with warnings

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Just now, cheese007 said:

I seem to recall not warning tornadoes being an issue for that office? Maybe another? Feels like this discussion has been had before

Yeah, this isn't a new phenomenon. The storm has had a tight couplet for quite a while now. 

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RGENT - IMMEDIATE BROADCAST REQUESTED  
TORNADO WATCH NUMBER 52  
NWS STORM PREDICTION CENTER NORMAN OK  
745 PM EDT THU MAR 25 2021  
  
THE NWS STORM PREDICTION CENTER HAS ISSUED A  
  
* TORNADO WATCH FOR PORTIONS OF   
  WEST-CENTRAL AND NORTH GEORGIA  
  
* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 745 PM  
  UNTIL 200 AM EDT.  
  
* PRIMARY THREATS INCLUDE...  
  A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE  
  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE  
  
SUMMARY...CLUSTERS WITH EMBEDDED SUPERCELLS SHOULD PROGRESS  
EAST-NORTHEAST FROM NORTHWEST GEORGIA AND EAST-CENTRAL ALABAMA.  
PRIMARY THREAT WILL BE TORNADOES, PARTICULARLY NEAR THE SURFACE WARM  
FRONT IN NORTH GEORGIA AND WITH ANY SEMI-DISCRETE SUPERCELLS  
PROGRESSING INTO WEST-CENTRAL GEORGIA.  

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