Tropical Storm Arlene has formed in the southwest Gulf of Mexico in the Bay of Campeche. The official intensity forecast shows Arlene approaching hurricane strength at landfall, prompting a Hurricane Watch to be issued for a portion of the coast of northeastern Mexico. Given the large size of Arlene's circulation one should not focus on the exact forecast track as impacts will likely be felt over a large portion of northeastern Mexico well away from the center. This image was taken by GOES-East at 1345Z on June 29, 2011.