Tropical Storm Calvin Forms: Flood and Mudslide Threat in Mexico and Central America

Brian Donegan
Published: June 12, 2017

Tropical Storm Calvin has formed and is moving very slowly near the Pacific coast of Mexico, where heavy rain could cause life-threatening flash floods and mudslides early this week.

Here's the latest from the National Hurricane Center:

  • Tropical Storm Calvin is located about 70 miles east-southeast of Puerto Angel, Mexico.
  • Calvin will move inland along the coast of southern Mexico by early Tuesday.
  • Life-threatening flash floods and mudslides are possible in southeastern Mexico and southern Guatemala.
  • This system is no threat to the U.S. mainland.

(MORE: Hurricane Season OutlookHurricane Central)


Current Storm Status

Tropical Storm Calvin is expected to move slowly west-northwestward and push inland along the coast of southern Mexico by early Tuesday morning.

Little change in strength is expected until landfall, and weakening will occur after the storm's center moves inland.


Projected Path

Tropical storm warnings continue over parts of the southeastern Mexican coast from Boca de Pijijiapan to Punta Maldonado.

Tropical-storm-force winds – 39 mph or greater – have likely begun over portions of the warning area but should subside by early Tuesday morning.


Tropical Storm Watches/Warnings

Regardless of Calvin's strength, heavy rain is the main threat to Mexico and southern Guatemala.

Five to 10 inches of rainfall are forecast across the Mexican states of Chiapas, Oaxaca and Guerrero, with isolated amounts up to 20 inches possible. More than 6 inches have already fallen in Oaxaca and Salina Cruz in the Mexican state of Oaxaca.

Calvin is also expected to produce rainfall totals of 4 to 6 inches in the Mexican states of Tabasco and Veracruz, as well as in southern Guatemala. More than 5 inches have fallen in the city of Veracruz, as of late Monday afternoon.

These rainfall totals could lead to life-threatening flash floods and mudslides in some areas into midweek.


Rainfall Forecast Through Wednesday

Check back with us at weather.com for updates on this system.

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