National Weather Service of the United States

The National Weather Service is presented as a central source of advance warning before Hurricane Katrina struck the New Orleans region. Its forecasts described a storm of exceptional strength and anticipated consequences lasting well beyond landfall. The account places those warnings alongside the evacuation and hospital-planning failures that turned a clearly forecast threat into a wider emergency.

Escalating Alerts

On the night before the storm’s expected arrival, the National Weather Service upgraded the hurricane watch for New Orleans to a warning. Its bulletin emphasized that Katrina was expected to be intense and dangerous and that the threat had to be taken seriously. Heavy rain was expected to begin within twenty-four hours, giving residents and institutions a narrowing interval in which to act.

By Sunday morning, August 28, the agency’s New Orleans office was warning that Katrina, then a Category Five storm, could make much of the area uninhabitable for weeks or longer. The forecast described the hurricane as unusually powerful and expected it to strike within twelve to twenty-four hours. It warned of extensive roof and wall failures, widespread power outages lasting for weeks, and water shortages severe enough to cause extraordinary human suffering.

Warnings in the Evacuation Crisis

The agency’s warnings appeared on television screens at Memorial Medical Center as local officials urged residents to leave. New Orleans mayor Ray Nagin issued a mandatory evacuation order at about ten that morning, after delays over logistical and legal questions. Yet the warning and order could not by themselves provide transportation: many residents had no cars, officials knew the city’s transport plans lacked sufficient drivers, and traffic was already congested on the routes out of town.

The National Weather Service’s forecasts also described hazards directly relevant to hospitals, including prolonged loss of electricity and water. Even before landfall, federal emergency officials were asking whether hospitals in flood-prone areas had placed generators and electrical switching equipment above ground level. In New Orleans, only two of roughly eighteen hospitals had done so; Memorial was not among them. The account thus distinguishes the availability of a serious forecast from the preparedness needed to turn that information into protection.

Forecast and Consequence

The agency’s warnings established the scale and urgency of the approaching danger, but they did not resolve how patients without independent means of travel would be evacuated. Roughly 2,500 hospital patients remained in New Orleans as Katrina advanced, and prior planning had not settled how so many people could be moved safely through a flood. Ambulances were overwhelmed by calls and trapped in traffic, while some transported patients to the Superdome rather than out of the city.

In the book’s wider reckoning with the disaster, delayed evacuation, inadequate transport, and hospitals’ weak backup systems appear among several interacting causes of death and suffering. The National Weather Service is not assigned responsibility for those failures; its role is to make the forecast danger legible. The contrast between the explicit warnings and the city’s limited capacity to respond underscores a central distinction in the account: knowing that a catastrophe is approaching is not the same as having the people, plans, and infrastructure to get vulnerable residents to safety.