Interesting cloud formation in Delaware...
- Thread starter beaudodson
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beaudodson
EF5
Kenny Drake
EF3
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- Apr 7, 2006
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I can't conclude anything without seeing the time-scale evolution. However, I did look at a time-loop of WSR-88D base reflectivity for April 20 and noticed very small scale convection. There are very small (spatially) returns of >40dBZ just off the coast of Delaware. I personally would guess it to be a fully condensed updraft. Note the wider condensation base at the surface. Now as to explain this theoretically, perhaps a cross between lake-effect and vertical instability. Synoptic maps show a closed low overhead. Put relatively warm ocean water under cold environments and you get lake/ocean effect. Unlike lake-effect, CSI was not the player but instead vertical instability by itself.
Eddie Natenberg
EF1
I may be wrong but I'm going to give my best guess on this one (a real shot in the dark). Oviously there is no video posted yet to determine any sort of rotation, but the laminar texture of the cloud makes me think there were intese pressure falls inside which would hint at a cyclostophic flow.
Ok my best guess would be that the storm gusted out along some sea breeze boundary and got wraped up in some intese small scale updraft creating a strong low level circulation momentary before occluding. The haze in the first picture leads me to believe there is a strong thermal vertical boundary and that this may have been a quick weak funnel (waterspout), that may have not made it all the way to the ground.
Ok my best guess would be that the storm gusted out along some sea breeze boundary and got wraped up in some intese small scale updraft creating a strong low level circulation momentary before occluding. The haze in the first picture leads me to believe there is a strong thermal vertical boundary and that this may have been a quick weak funnel (waterspout), that may have not made it all the way to the ground.
