Published On: Tue, Jun 3rd, 2014

Tropical Storm “Boris” threatens Southeast Mexico with Heavy Rain

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A little earlier today, the National Hurricane Center upgraded Tropical Depression 2-E off Mexico’s Pacific coast to a tropical storm.

It’s named Tropical Storm Boris, and as of 11 a.m. PDT the system had already brought nearly 4 inches of rain to Puerto Chiapas, Mexico.

As I write this, Boris has maximum sustained winds of 40 miles per hour. The storm is moving slowly northward and is not expected to strengthen significantly before landfall, which should happen by early Wednesday.

The most significant threat from Boris is rain — and we’re talking huge amounts of it. From the National Hurricane Center:

RAINFALL...BORIS IS EXPECTED TO PRODUCE AS MUCH AS 10 TO 20 INCHES OF RAIN OVER A LARGE PART OF SOUTHERN MEXICO THROUGH SATURDAY...WITH ISOLATED AMOUNTS EXCEEDING 30 INCHES LIKELY OVER THE MOUNTAINOUS TERRAIN OF THE MEXICAN STATES OF OAXACA AND CHIAPAS. BORIS IS ALSO EXPECTED TO PRODUCE TOTAL RAINFALL AMOUNTS OF 5 TO 10 INCHES IN GUATEMALA. THESE RAINS ARE LIKELY TO RESULT IN LIFE-THREATENING FLASH FLOODS AND MUD SLIDES.
Tropical Depression 2-E, which has since developed into Tropical Storm Boris, is seen in this image acquired by NASA’s Terra satellite (Source: NASA)

Tropical Depression 2-E, which has since developed into Tropical Storm Boris, is seen in this image acquired by NASA’s Terra satellite on May 2014. (Source: NASA)


“The states of Southeastern Mexico and the Yucatan Peninsula are going to get hammered with quite a bit of rain,” said Brian Wimer, an expert senior meteorologist at AccuWeather Inc. in State CollegePennsylvania. “This is a classic setup with rain coming in, and once you get away from the coast there are some pretty high mountains, and that helps enhance the rainfall.”

Boris is expected to weaken as it moves ashore, then break apart in the mountains later this week, the center said.

Wimer said there’s a slight chance the remnants of the storm will enter the Bay of Campeche in theGulf of Mexico. He doesn’t think it will re-form into a storm there.

“It doesn’t look like a great setup but it is something to keep an eye on,” Wimer said.

tropical storm warning is in place from Salina Cruz, Mexico, to the border with Guatemala.

Boris is the second tropical storm of the Eastern Pacific hurricane season, which began May 15. Storm Amanda grew into a Category 4 major hurricane without directly threatening land.

The hurricane center is also tracking a disturbance in the Bay of Campeche, in the southern Gulf of Mexico. It has a 20 percent chance of growing into a tropical system in the next five days.

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