Inside Amazon’s Global Weather Command

Kastman’s path to Big Tech began with an childhood obsession with Midwest snowstorms. After earning a Ph.D. in meteorology from the University of Missouri, he spent seven years at the National Weather Service, where he developed the Winter Storm Severity Index. His transition to the private sector was prompted by his wife, who spotted the opening while working at Amazon. He realized that his core mission—prioritizing life and safety—could be applied just as effectively to corporate logistics as it is to public service.

Operating from the Global Security Operations Center, Kastman’s team functions as an internal intelligence unit. On calm days, they focus on risk mitigation strategies and rehearsing emergency playbooks. When severe weather hits, the focus shifts to rapid tactical decisions. By analyzing data on ice, floods, and heat, the team provides the necessary evidence for Amazon to reroute delivery fleets or suspend site operations before conditions become hazardous. During late January’s Winter Storm Fern, for instance, Kastman’s warnings allowed the company to preemptively shut down operations in Mississippi and Tennessee to ensure driver safety.

Beyond technical analysis, Kastman views his role as a source of institutional calm. He often debunks sensationalized weather headlines that might otherwise trigger unnecessary operational panic. By providing grounded, expert context, he helps site leaders distinguish between manageable weather and genuine safety risks. He encourages current meteorology students to look beyond government roles or television, arguing that the critical thinking skills inherent in the field are highly valued in the private sector’s growing demand for specialized risk management.