FIGURE 3.1 Distribution of the 122 National Weather Service WFOs in the continental United States, Alaska, Hawaii, Guam, and Puerto Rico. The CWAs that each WFO serves are shaded. The Southern California coastal area shaded in pink is the CWA served by the Los Angeles-Oxnard WFO. SOURCE: National Weather Service.

THE MODERNIZATION AND ASSOCIATED RESTRUCTURING OF THE NATIONAL WEATHER SERVICE

Vast improvements in instrumentation, computer, communications, and data processing technologies since the 1950s led to much improved weather observing technologies in the 1970s and 1980s. These advances, together with a better scientific understanding of atmospheric processes, allowed for major improvements in NWS capabilities to accurately observe, forecast, and warn of severe weather. To capitalize on the scientific and technological advances for improving its services, the NWS underwent a major modern-



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