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Tropical Storm Sonia Accelerates Toward Mexico's West Coast

7 PM PST, November 3, 2013

By WeatherBug Meteorologist, Matt Mehallow

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Tropical Storm Sonia weakens in the Eastern Pacific as it quickly approaches Mexico`s west coast tonight.

As of 7 p.m. PST, Tropical Storm Sonia was located near 23.2 N and 108.1 W, or about 115 miles east of the southern tip of the Baja California and 190 miles south-southwest of Culiacan, Mexico. Its top sustained winds are 40 mph. Sonia continues to move to the north-northeast at 17 mph, and its minimum central pressure is 1004 mb, or 29.65 inches of mercury.

A Tropical Storm Warning is in effect for Mazatlan to Altata while a Tropical Storm Watch is in effect from Altata to Topolobampo, Mexico.

A Tropical Storm Warning means tropical storm conditions are expected within the next 24 to 36 hours.

A low pressure center moving inland across the U.S. West Coast will keep Sonia moving quickly to northeast tonight and toward Mexico`s west coast by early Monday morning. Sonia will continue to encounter strong wind shear, which will cause it to weaken further, before making landfall Monday morning as a tropical depression.

The primary threat from Sonia will be locally heavy rainfall tonight and into Monday. Expected rainfall amounts are 3-to-6 inches for Sinaloa and western Durango, with a few amounts to 10 inches. Due to this heavy rainfall late tonight into Monday, flash flooding and mudslides will be possible. Sonia will continue to weaken tonight as it approaches Mexico and will eventually dissipate as it moves inland to Mexico Monday morning.

Sonia marks the eighteenth named storm in the Eastern Pacific since the season started on May 15. This is above the average of 15 for an entire season. Just like the Atlantic tropical season, the Eastern Pacific`s will end at the end of this month.

Be sure to check with WeatherBug often for the latest information on the 2013 Hurricane Season. Be sure to keep WeatherBug active to receive the latest weather in your neighborhood and get the latest updates anywhere on Twitter.

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