While monitoring the convective initiation (CI) product on the GOES-E satellite moving east out of Telfair county, GA, an area of 66 percent increased as it moved into Jeff Davis county at 1845 UTC.  By 1915Z, a supercell with an overshooting top developed across northern Jeff Davis county.

Here are the before and after images.  You can see the overshooting top just above “Jeff” on the 1915 UTC image.

Figure 1:  GOES-E satellite images at 1845 UTC (with area of CI in red circle) and 1915 UTC as the maturing supercell moves across Jeff Davis county.

Good example of how the CI tool shows where convection should initiate.  Very nice looking anvil top with this cell on the 1915 UTC image.

CoonieCatEye