Mexican GPS Tracks Convection From North American Monsoon

The North American monsoon (NAM) is a dominant feature of the climate of northwest Mexico and the southwest United States. The annual monsoon, which usually lasts from July to September, contributes more than half of the yearly precipitation for much of the region. Thunderstorms brought on by the monsoon are routinely responsible for severe weather, including flooding, hail, wind, dust storms, and lightning. Tropical storms and hurricanes during the NAM season can also wreak havoc on a much larger scale.