• After witnessing the continued decrease of involvement in the SpotterNetwork staff in serving SN members with troubleshooting issues recently, I have unilaterally decided to terminate the relationship between SpotterNetwork's support and Stormtrack. I have witnessed multiple users unable to receive support weeks after initiating help threads on the forum. I find this lack of response from SpotterNetwork officials disappointing and a failure to hold up their end of the agreement that was made years ago, before I took over management of this site. In my opinion, having Stormtrack users sit and wait for so long to receive help on SpotterNetwork issues on the Stormtrack forums reflects poorly not only on SpotterNetwork, but on Stormtrack and (by association) me as well. Since the issue has not been satisfactorily addressed, I no longer wish for the Stormtrack forum to be associated with SpotterNetwork.

    I apologize to those who continue to have issues with the service and continue to see their issues left unaddressed. Please understand that the connection between ST and SN was put in place long before I had any say over it. But now that I am the "captain of this ship," it is within my right (nay, duty) to make adjustments as I see necessary. Ending this relationship is such an adjustment.

    For those who continue to need help, I recommend navigating a web browswer to SpotterNetwork's About page, and seeking the individuals listed on that page for all further inquiries about SpotterNetwork.

    From this moment forward, the SpotterNetwork sub-forum has been hidden/deleted and there will be no assurance that any SpotterNetwork issues brought up in any of Stormtrack's other sub-forums will be addressed. Do not rely on Stormtrack for help with SpotterNetwork issues.

    Sincerely, Jeff D.

7/23/10 DISC: SD/IL

Compare radar to Aurora, NE (2003)

I've got a theory. Top is radar for the Vivian storm. Bottom is radar for the Aurora, NE (2003) storm. Both these scans show a triple decker set-up. The top storm hail seeds the middle storm which hail seeds the tail-end charlie. I may have to put a presentation together on this idea.

vivian_hail.gif


aurora_hail.gif
 
Justin -- sounds plausible, but almost impossible to argue with any certainty considering the inability of knowing the storm-relative flow around and through the three storms. The trajectories may be such that a select few stones are able to "hop-scotch" from one updraft to another. If only we had dual-Doppler analyses from these events or really good data assimilation analyses to let us compute trajectories...
 
KFYR-TV A hailstone that fell in central South Dakota has set U.S. records. The stone found by a ranch hand near the town of Vivian the night of July 23 measured 8 inches in diameter and weighed 1 pound, 15 ounces. The previous record for weight was 1.67 pounds for a stone in Coffeyville, Kan., in 1970.


Dont know if this is the 100% truth, but it was posted anyways on FB.
 
I've got a theory. Top is radar for the Vivian storm. Bottom is radar for the Aurora, NE (2003) storm. Both these scans show a triple decker set-up. The top storm hail seeds the middle storm which hail seeds the tail-end charlie. I may have to put a presentation together on this idea.

vivian_hail.gif


aurora_hail.gif

http://www.theweatherspace.com/SubSection/Weather_News/National_Weather/454 It is a shame someone else has to leech off your theory idea Justin. I would be extremely interested to see your presentation on it as I thoroughly enjoyed your others.
 
To show that that theory has some promise, you'd have to show that there was some significant motion of the winds at upper levels from north to south. Other than simple upper level divergence, I'm not sure how you'd show that, but upper level divergence at the top of a thunderstorm happens all the time.
 
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