Tropical Storm Hermine (2010)

Tropical Storm Hermine
Tropical Depression Eleven-E

Tropical Storm Hermine near landfall in northern Mexico on September 6
Meteorological history
Formed	September 3, 2010 (September 3, 2010)
Remnant low	September 9, 2010
Dissipated	September 10, 2010 (September 10, 2010)
Tropical storm
1-minute sustained (SSHWS/NWS)
Highest winds	70 mph (110 km/h)
Lowest pressure	989 mbar (hPa); 29.21 inHg
Overall effects
Fatalities	52 direct, 50 indirect, 100 presumed dead
Damage	$740 million (2010 USD)
Areas affected	Central America Mexico Texas Oklahoma Kansas
IBTrACS
Part of the 2010 Atlantic and Pacific hurricane seasons

Tropical Storm Hermine was a near-hurricane strength tropical cyclone that brought widespread flooding from Guatemala northwards to Oklahoma in early September 2010. Hermine was the only known tropical cyclone to cross over into the North Atlantic basin in the satellite era. Though it was named in the western Gulf of Mexico, Hermine developed directly from the remnant low-pressure area associated with the short-lived Tropical Depression Eleven-E in the East Pacific. Throughout its lifespan, the storm caused 52 direct deaths and roughly US$740 million in damage to crops and infrastructure, primarily in Guatemala. The precursor tropical depression formed on September 3 in the Gulf of Tehuantepec and neared tropical storm intensity before making landfall near Salina Cruz, Mexico, on the next day. Though the depression quickly weakened to a remnant low, the disturbance crossed the Isthmus of Tehuantepec and tracked north into the warm waters of the Gulf of Mexico, where it reorganized into a tropical cyclone once again on September 5. There, the system quickly strengthened into a tropical storm and received the name Hermine before moving ashore near Matamoros, Mexico on September 7 as a high-end tropical storm. Over the next few days, Hermine weakened as it moved over the U.S. Southern Plains, eventually dissipating over Kansas on September 10.

In the Eastern Pacific, Tropical Depression Eleven-E, along with moisture from a monsoonal flow, brought torrential rains to southern Mexico and Guatemala. At least 84 people were killed in the two countries and damage exceeded $500 million. In northern Mexico, the effects of Tropical Storm Hermine were limited. Further north, severe flooding affected large parts of Texas and Oklahoma, killing eight people and leaving at least $240 million in losses. Despite the deaths and damage, the name Hermine was not retired.