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Tropical Storm Ernesto (05L) Near Coast of Mexico

18.6N 91.8W

August 8th, 2012 Category: Tropical Storms

Tropical Storm Ernesto – August 8th, 2012

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Tropical Storm Ernesto - August 8th, 2012 © Univ. of Wisconsin

Tropical Storm Ernesto

As of 4 p.m. CDT (2100 UTC) August 8, Tropical Storm Ernesto (05L) is located within 20 nautical miles of 18.9°N 91.5°W, about 30 mi (50 km) northeast of Ciudad del Carmen, Mexico.

Maximum sustained winds are 45 knots (50 mph, 85 km/h), with stronger gusts. Minimum central pressure is 995 mbar (hPa; 29.38 InHg), and the system is moving west at 11 kt (13 mph, 20 km/h). Tropical storm force winds extend outward up to 140 miles (220 km) from the center of Ernesto.

Tropical Storm Ernesto (05L) Over Caribbean Sea

16.6N 80.6W

August 7th, 2012 Category: Tropical Storms

Tropical Storm Ernesto – August 6th, 2012

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Tropical Storm Ernesto - August 6th, 2012 © Univ. of Wisconsin

Tropical Storm Ernesto

As of 8 p.m. EDT August 6 (0000 UTC August 7), Tropical Storm Ernesto is located within 30 nautical miles of 16.5°N 82.1°W, about 295 mi (475 km) east of Isla Roatan, Honduras and about 415 mi (670 km) east of Belize.

Instead of Ernesto becoming more organized, moderate wind shear and dry air made Ernesto more disorganized as it travels through the Caribbean Sea. On August 6, Ernesto slowed from over 20 mph to 10 mph. As it moved over warmer waters and lowered wind shear, Ernesto intensified to near hurricane status.

Currently, maximum sustained winds are 55 knots (65 mph, 100 km/h), with stronger gusts. Minimum central pressure is 995 mbar (hPa; 29.38 InHg), and the system is moving west-northwest at 10 kt (12 mph, 19 km/h). Tropical storm force winds extend outward up to 125 miles (205 km) from the center of Ernesto.

Tropical Storm Ernesto (05L) Near Coast of South America

14.1N 66.3W

August 4th, 2012 Category: Tropical Storms

Tropical Storm Ernesto – August 3rd, 2012

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Tropical Storm Ernesto - August 3rd, 2012 © Univ. of Wisconsin

Tropical Storm Ernesto

On July 27, a well-defined tropical wave emerged off the coastline of Africa.

The NHC first monitored this tropical wave in its tropical weather outlook on July 30, noting that the system had an accompanying low pressure area and was showing signs of development. The convection slowly organized due to generally favorable environmental conditions.

After the circulation became better defined, the NHC initiated advisories on Tropical Depression Five at 2100 UTC on August 1. At the time, the depression was located about 810 mi (1305 km) east of the Lesser Antilles, moving west-northwestward due to a cold-core low to its north.

In the 12 hours after its formation, the system’s convection became disorganized due to westerly wind shear, and the NHC remarked the potential for degeneration into a tropical wave. However, a Hurricane Hunters flight on August 2 observed tropical storm force winds, and accordingly the NHC upgraded the depression to Tropical Storm Ernesto at 2100 UTC. The next day, the storm moved over or very near Saint Lucia, and a station on the island reported a wind gust of 63 mph (101 km/h).

As of 5 p.m. AST (2100 UTC) August 3, Tropical Storm Ernesto is located within 20 nautical miles of 13.9°N 64.1°W, about 210 mi (335 km) west of St. Lucia; about 340 mi (545 km) south-southeast of San Juan, Puerto Rico. Maximum sustained winds are 45 knots (50 mph, 85 km/h), with stronger gusts. Minimum central pressure is 1002 mbar (hPa; 29.59 InHg), and the system is moving west at 18 kt (21 mph, 33 km/h). Tropical storm force winds extend outward up to 105 miles (165 km) from the center of Ernesto.

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