Monday, June 9, 2008

Discrete SuperCell Along Weak Surface Cold Front Surface Boundary, Reagan County, June 9th, 2008












Convective initiation began in late afternoon-early evening in the southeastern Permian Basin along and south of a weak surface cold front in moist lower levels and moderately unstable air aloft (MUCape values near 2000 J/kg), due to Upper Level amplified troughing to the north which when coupled with surface heating had eroded convective inhibition. All following images were taken from Midland looking southeast at developing storms, approximately 5o miles distant, in Reagan and Irion counties with a 70-300mm lens. The first image is zoomed at developing convective growth in Reagan county at approximately 0130Z. This cell became severe warned by NWS/MAF shortly afterward. Two additional images after warning occurred, noting crispness of intensification, (1) and overshooting top above vertical scalloped striations atop initial anvil spreading, (2). The next image is of a radar capture of the cell in Reagan county with well developed V-notch and also noting weaker cell in Irion county to the east of previous photographed storm. The next image is of the Irion county cell as viewed from behind, northwest, with back building convective towers. The next image is from the Reagan county cell, nearing dusk, showing hint of overshoot-ing top from main storm tower updraft above spreading anvil with back building smaller towers in foreground. The last capture is an un-zoomed image of the Reagan county cell during maturing stage.

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