• 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.

The Super Outbreak: Fairly new paper and slide show at SPC

Nick Smith

EF2
Joined
Dec 5, 2003
Messages
125
Location
Cincinnati, Ohio
I was browsing the SPC publications page last night and ran across these:

Corfidi, S.F., J.J. Levit and S.J. Weiss, 2004: The Super Outbreak: Outbreak
of the Century. Preprints, 22nd Conf. Severe Local Storms, Hyannis MA. [1869K PDF]

http://www.spc.noaa.gov/publications/corfi...fidi/3apr74.pdf

Slideshow
http://www.spc.noaa.gov/publications/corfi...ides/index.html

Just look inside, as I could write another paper talking about it all here. There's a satellite loop in the slideshow, but the link is broken :( There's also two radar photos on slide 61...cell in northeast part of screen is the Xenia cell (nice hook on both cells).
 
I think it's more like multiple vortices, but only two large ones present as opposed to five or so smaller ones. Since they were rotating around a common center, you wouldn't know that there were two if you saw the damage track. Photos taken immediately before that one show one condensation funnel, but a hint of suction vortices are just visble above the treeline.
 
fujiwara effect
Click to expand...
Fujiwhara effect—The tendency of two nearby tropical cyclones to rotate cyclonically about each other as a result of their circulations' mutual advection.

This occurs with some frequency in the northwestern Pacific basin, where it presents a significant forecast challenge, but happens more rarely in other ocean basins.
Click to expand...
Source: AMS Glossary

Mike
 
Originally posted by rdewey
It was actually one tornado from a single parent mesocyclone, but two distinct funnels exhibiting the fujiwara effect... I would suspect that the two funnels did indeed merge back together...
Click to expand...

That's the best-known shot in a five-photo sequence that depicts a rather small funnel sweeping in, broadening abruptly and presumably intensifying just before striking the Midway Trailer Park, dividing, then reconsolidating into a single funnel.
 
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