In this animation of Tropical Storm Boris off the Pacific coast of Mexico, the false color scheme highlights areas of intense precipitation. Bright green is indicative of the most intense rainfall, followed by red tones. (Source: NOAA) 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 ...
