Tropical Storm Calvin forms in Pacific, hits southern Mexico


Tropical Storm Calvin, the third named storm of the 2017 East Pacific hurricane season, formed around 18:00 UTC yesterday, Monday June 12, from a tropical depression approximately 30 mi (50 km) offshore the southern Mexican state of Oaxaca.

On June 12, the Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA's Aqua satellite captured a visible-light image of the storm that enabled forecasters to see Calvin became more organized.

A tropical storm warning was in effect for Mexico's Pacific coast between Punta Maldonado and Boca de Pijijiapan. The rains could well result in "life-threatening flash floods and mudslides", the NHC said.

At 5 a.m. EDT (0900 UTC), the center of Tropical Depression Calvin was located near latitude 16.3 North, longitude 96.3 West.

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It had maximum sustained winds of 40 miles per hour (65 kph) but was expected to weaken as it continued heading inland. The estimated minimum central pressure is 1007 millibars.

Calvin will continue to slowly track northwestward, inching inland from the southern coast of Mexico, where it made landfall between Salina Cruz and Puerto Angel on Monday evening.

The storm is projected to rain 5-10 inches, but there could be isolated downpours of up to 20 inches, the NHC said. Up to 6 inches of rain is expected to fall in the states of Tabasco, Morelos, Mexico and Michoacán. Whatever develops in this area will generally drift to the northwest and could bring more heavy rains into southern Texas by early next week.