On July 28th, an area of low pressure developed near the Bahamas and tracked to the north-northeast. As it organized, it was upgraded to a tropical depression late on the 30th. By the 31st, the system strengthened into a tropical storm south of Nova Scotia. Chantal became extratropical late that same day as it moved over the cool waters of the north Atlantic towards Newfoundland. Peak intensity was 85 km/hr (43 knots or 50 mph) with a minimum pressure of 994 mb. More information on Chantal is available from the NOAA National Hurricane Center.
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On August 13, tropical depression four formed in the eastern Atlantic ocean off the coast of Africa. This tropical depression became organized as it moved west and was upgraded to tropical storm Dean. As Dean progressed westward, it continued to intensify and was classified as the first 2007 Atlantic hurricane on August 16. The hurricane passed into the Caribbean near Martinique and Saint Lucia as a Category 2 hurricane on August 17. Dean continued to strengthen and reached Category 5 status by late on August 20, and it made landfall as a Category 5 hurricane on August 21 on the Yucatán Penninsula of Mexico near Costa Maya in a sparsely populated area. After weakening over the peninsula, Dean passed again over open water in the southwestern part of the Gulf of Mexico, enabling it to strengthen back to a Category 2 hurricane before making landfall a second time near Tecolutla on August 22. Peak intensity was 270 km/hr (146 knots or 165 mph) with a minimum pressure of 906 mb. More information on Dean is available from the NOAA National Hurricane Center.

A tropical depression formed on August 14 about 425 miles (685 km) east-southeast of Brownsville, Texas and about 425 miles (680 km) east of La Pesca, Mexico. It organized enough to be classified the next day as a tropical storm and given the name Erin. Erin weakened and crossed the Texas coast near Lamar on the 16th as a tropical storm and later became extratropical. The remnants of Erin continued northwestward through Texas and turned north and tracked over the south-central U.S., causing extensive flooding in Oklahoma on August 19. Although Erin was no longer a tropical system, radar imagery on the 19th indicated a clear hole resembling an eye in the precipitation field around which the heavy rain rotated. Peak intensity was 65 km/hr (35 knots or 40 mph) with a minimum pressure of 1003 mb. More information on Erin is available from the NOAA National Hurricane Center.
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