The first feature I noticed at first glance of all of the AzShear products was the “time lag” so-to-speak of the merged AzShear products. More specifically, I compared the velocity couplet with the AzShear product and the merged 0-2km AzShear product. The merged product shows a disconnected and smeared\/cluttered version of the max shear couplet region, making it difficult to find exactly which high value center you would like to focus on.<\/p>\n
![\"\"](\"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-content\/uploads\/sites\/22\/2019\/05\/azshear_vs_mergedazshear.png\")
Above is an example of those three products with my mouse over the circulation center for reference. In particular, I grabbed the 0.9deg radar tilt to get the middle of the averaged layer (~1km AGL).\u00a0 \u00a0Because of this multi-maximum issue in the merged product, I find the main AzShear product more useful and trustworthy than the merged product with this particular case.<\/p>\n
In addition, I was able to pick up a “debris ball” signature at a similar time. I noticed the low CC was spatially ahead of both of the AzShear product maximum couplets. This tells me to not solely rely on a one product as the main location of greatest shear or tornadic location, just because there will be a slight spatial lag between products (more noticeable in the merged product) . This also makes it clear in making sure to continue to utilize velocity data (as is well known with debris ball signatures).\u00a0 Image below:<\/p>\n
![\"\"](\"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-content\/uploads\/sites\/22\/2019\/05\/debrisball.png\")
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This debris ball signature was notable at both the 0.5deg tilt and the 0.9deg tilt, so I kept the 0.9deg screen for consistency.<\/p>\n
Lastly, I noticed the strength of the AzShear couplets began ramping up and showing maximum values in prior temporal radar scans to the debris ball signature, which is to be expected. I would be more concerned if it was the other way around. Having all of these signatures in place further verifies the strength of the system.<\/p>\n
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The first feature I noticed at first glance of all of the AzShear products was the “time lag” so-to-speak of the merged AzShear products. More specifically, I compared the velocity… <\/p>\n