Friday, March 14, 2008

SuperCell Martin County, Howard County,Texas, April 23, 2007










The following images were captured from a quickly exploding "tail-end Charlie" Supercell apart of an equally initiated multi-celled complex which developed northeast of Midland around 2300 Z on April 23, 2007. Synoptically, the Permian Basin was a very favorable region for Supercell initiation due to 1), abundant low level moisture via a strong LLJ and 2), good upper air dynamics inclusive of cold air aloft and vorticity via an Upper Level Low ejecting shortwaves . These attributes provided high CAPE values and adequate directional and speed shear, however a very strong CINH was prohibiting convection". Once forcing overcame the "Cap", locally, strong initiation rapidly ensued. The fist image, above, was taken east of Stanton in Martin County from beneath Rain Free Base looking further northeast at FFD (southeastern facing shelf cloud) and main Rain/Hail core in left center foreground.












The next image, above, shows the incising RFD near Stanton as viewed overhead. Continuing to drive east along Interstate 20 the next image shows the RFD to the left of a developing lowering of the Updraft Intake Region near Big Spring Texas. The next image is taken just north of the townsite of Coahoma, Tx from beneath the Rain Free Base and Updraft Intake Center looking back to the southwest at the Rear Flanking Line.










Driving
north on SH 820 from Coahoma, a postion was established to view the Mesocyclone from the southwest side or from the RFD perspective whereby the following below image was captured showing aforementioned cutting into the Rain Free Base region. The next image was taken just a short time later at an apparent funnel cloud as viewed from the southwest looking northeast just to the right of the previously captured RFD.



The next image is viewed at same location, southwest side of Supercell, but looking directly overhead at Towering Storm Tower noting crispness of nimbocumulus clouds. The next image is of Fractus Scud clouds proximal to the Updraft Center and adjacent Inflow Band. The next image is taken from Old Colorado City Highway east of Coahoma looking east at maturing Supercell Storm Towers and heavy rain/hail core beneath.













The last image was captured at same locale, on Old Colorado City Hwy, looking distant northeast at lowered Wall Cloud just to the right of the road and Inflow Bands associated with the Rear Flanking Line. A tornado was witnessed by the public, near this time, at the townsite of Loriane but a survey review from MAF NWS determined that damage enountered was the result of straight line winds from the RFD.





























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