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Hurricane Hilary (09E) Off Coast of Mexico

19.6N 113.6W

September 30th, 2011 Category: Tropical Cyclones

Hurricane Hilary (09E) - September 25th, 2011

Enhanced image

Track of TS 09E  - September 30th, 2011 © Univ. of Wisconsin

Track of TS 09E

The main and enhanced images offer a view of Hilary (09E) a few days ago, while still at hurricane stregnth. The animated imagery shows the recent track of the system, which has been downgraded to a tropical storm.

As of 2 p.m. PDT (2100 UTC) September 29, Tropical Storm Hilary is located within 15 nautical miles of 21.6°N 120.7°W, about 695 mi (1120 km) west of the southern tip of Baja California. Maximum sustained winds are 45 knots (50 mph, 85 km/h), with stronger gusts. Minimum central pressure is 1000 mbar (hPa; 29.53 InHg), and the system is moving north-northwest at 8 kt (9 mph, 15 km/h). Tropical storm force winds extend outward up to 175 miles (280 km) from the center of Hilary.

The system began on September 18, as a broad area of low pressure associated with minimal shower and thunderstorm activity that began to show signs of organization, while located several hundred miles to the south-southeast of the Gulf of Tehuantepec.

Moving towards the west, and west-northwest, the disturbance gained enough organization early on September 21 to be declared as a tropical depression, the ninth of the season. Continuing to organize, the depression strengthened into a tropical storm several hours later.

On September 22, the meteorologists declared Hilary as a Category 1 hurricane, becoming the seventh of the season. On September 22, it rapidly strengthened into a small, Category 4 hurricane, featuring a well-defined eye and very deep convection.

The storm’s outer bands produced heavy rainfall over Chipas and Tabasco, with accumulations in Tabasco reaching 8.58 in (218 mm) in 24 hours. Several rivers across the region overflowed their banks and flooded nearby areas. In Villahermosa heavy rain collapsed drains and many streets were flooded. In addition, cars were stranded in floodwaters. Across Colima, waves reached 9 to 15 ft (2.7 to 4.6 m).


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