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Aletta (01E) Downgraded to Tropical Depression

18.4N 108.9W

May 18th, 2012 Category: Tropical Storms

Tropical Depression Aletta (01E) - May 16th, 2012

Tropical Depression Aletta (01E) - May 17th, 2012

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Track of Tropical Depression Aletta (01E) - May 17th, 2012 © Univ. of Wisconsin

Track of TD 01E

As of 2 p.m. PDT (2100 UTC) May 17, Aletta has been downgraded to a tropical depression, and is located within 30 nautical miles of 13.1°N 114.7°W, about 745 mi (1200 km) south-southwest of the southern tip of Baja California.

The maximum sustained winds of Tropical Depression Aletta (01E) are 30 knots (35 mph, 55 km/h), with stronger gusts. Minimum central pressure is 1006 mbar (hPa; 29.71 InHg), and the system is moving north at 5 kt (6 mph, 9 km/h).

Tropical Storm Aletta and Nearby Low Pressure Area

13.2N 108.9W

May 16th, 2012 Category: Tropical Storms

Tropical Storm Aletta (01E) - May 16th, 2012

Tropical Storm Aletta (01E) - May 16th, 2012

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Track of Tropical Storm Aletta (01E) - May 16th, 2012 © Univ. of Wisconsin

Track of TS 01E

As of 2 p.m. PDT (2100 UTC) May 16, Tropical Storm Aletta (01E), the first storm of the 2012 Pacific Hurricane Season, is located within 30 nautical miles of 11.4°N 113.5°W, about 830 mi (1335 km) south-southwest of the southern tip of Baja California.

Maximum sustained winds are 35 knots (40 mph, 65 km/h), with stronger gusts. Minimum central pressure is 1004 mbar (hPa; 29.65 InHg), and the system is moving west at 8 kt (9 mph, 15 km/h). Tropical storm force winds extend outward up to 45 miles (75 km) from the center of Aletta.

Visible to the east of Aletta in the full images is a broad low pressure area located about 500 miles south of Acapulco, Mexico. It has changed little over the past several hours, although environmental conditions are generally conducive for slow development of this system during the next few days. This system has a medium chance (30 percent) of becoming a tropical cyclone during the next 48 hours as it moves slowly to the northwest.

Tropical Storm Aletta (01E) Off Coast of Mexico Marks Start of 2012 Hurricane Season – May 15th, 2012

17.5N 110.8W

May 15th, 2012 Category: Image of the day, Tropical Storms

Tropical Storm Aletta (01E) - May 14th, 2012

Tropical Storm Aletta (01E) - May 14th, 2012

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Track of Tropical Storm Aletta (01E) - May 14th, 2012 © Univ. of Wisconsin

Track of TS 01E

On May 12, the NHC reported that a tropical disturbance formed, about 550 miles south-southwest of Acapulco, Mexico. The storm quickly moved northwest before stalling, and then began to strengthen rapidly.

Early on May 14, the tropical disturbance intensified into a tropical depression, becoming the first storm of the season. Tropical Depression One-E formed one day before the official start of the 2012 Pacific hurricane season. This marks the first time that a tropical cyclone has formed before the official start of hurricane season, in the East Pacific basin since 1996, when Tropical Storm One-E formed on May 13, 1996.

Late on May 14, the storm intensified into Tropical Storm Aletta, with 40 mph (65 km/h) 1-minute sustained winds. As of 8 p.m. PDT (0300 UTC) May 15, Tropical Storm Aletta is located within 30 nautical miles of 10.5°N 108.5°W, about 650 mi (1045 km) south-southwest of Manzanillo, Mexico. Maximum sustained winds are 35 knots (40 mph, 65 km/h), with stronger gusts. Minimum central pressure is 1004 mbar (hPa; 29.65 InHg), and the system is moving west at 10 kt (12 mph, 19 km/h).

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