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Figure: Illustration of the solar and terrestrial environment on 23-24 March 1991. Top: the 1-8 Å soft solar X-ray flux as measured by the GOES-7 synchronous orbit spacecraft. Associated solar flares are indicated immediately below. Four selected integral proton flux energies from the GOES-7 spacecraft are shown in the center panel. The GOES-7 magnetometer is shown next followed by the Earth's magnetic field variations observed at Fredricksburg, Virginia. Below is the cosmic radiation intensity, as measured by the neutron monitor at Deep River, Canada. A summary of the spacecraft effects and other operational anomalies are listed at the bottom with the arrows indicating the times of degraded operation [ Shea and Smart, 1993].

 
Figure 2: A history graphic of the customer groups served by SESC, showing both the time when each use was started and the growing need for space weather predictions and services. Note that each new customer added over the years has continued the need for services from the time of addition to the present (courtesy of E. Hildner, NOAA/SEL).