Monday, September 6, 2010

Tropical Storm Hermine (2010)

Storm Active: September 5-7
On September 3, a low pressure system formed in the eastern Pacific and quickly became Tropical Depression Eleven-E. However, the system made landfall in Mexico the next day without becoming a tropical storm. The remnant low of the system moved into the Bay of Campeche on September 5 and began to organize again. The low was associated with a very large area of showers and thunderstorms covering a significant portion of the western Gulf of Mexico. Late on September 5, the system was organized enough to be upgraded to Tropical Depression Ten. Ten quickly strengthened, and became Tropical Storm Hermine early on September 6.

Hermine quickly organized, and began rapidly strengthened as it moved generally to the north. Hermine reached its peak intensity of 65 mph winds and a minimum pressure of 991 before making landfall in extreme north Mexico late on September 6. Hermine crossed the U.S.-Mexico border inland a few hours later, as it steadily weakened. Hermine maintained minimal tropical storm status for a fairly long time inland, but finally weakened to a tropical depression by the evening of September 7. By later that night, it was no longer monitored by the national hurricane center, but it still maintained tropical depression status, as it tracked northward through the central U.S. The depression merged with a frontal boundary on September 9. The remnant moisture combined with the frontal system caused heavy rain from the midwest to the northeast over the next couple of days, before moving off the coast on September 12.

Hermine inland over Texas, still maintaining tropical storm strength and a healthy outflow.

Track of Hermine.

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